CN114094783B

CN114094783B - Method for forming tail of flat copper wire wave winding with small span, large cross section and small end extending torsion nose

Info

Publication number: CN114094783B
Application number: CN202210073971.3A
Authority: CN
Inventors: 王海岗; 张亚鸽; 张旭; 宋建成; 王晓勤; 张蕊莉; 李海
Original assignee: Shanxi Fenxi Heavy Industry Co Ltd
Current assignee: Shanxi Fenxi Heavy Industry Co Ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-05-10
Anticipated expiration: 2042-01-21
Also published as: CN114094783A

Abstract

The invention discloses a method for forming the tail part of a flat copper wire wave winding with a small span, a large cross section and a small end extending twist nose, which realizes the high-efficiency integral bending and forming of the tail part of the flat copper wire wave winding with the small span, the large cross section and the small end extending twist nose; the combination of the bending positioning columns at the tail parts of the coils and different connecting screw holes on the table top is used for realizing the forming of the splayed tail parts of the coils with different sizes, and particularly, an L-shaped clamping plate is arranged at the bending part to effectively limit the outward bulge of the tail coil during the bending process, so that the defect that the bending part at the tail part bulges outwards and deforms is overcome; in addition, the coil bending positioning column and the drum-type bending wrench are ingeniously combined, so that the drum on the wrench extrudes the coil in rolling, and the nondestructive bending forming of the bending position of the wave winding is realized. The invention greatly improves the tail forming efficiency of the multi-layer stacked flat copper wire wave winding, protects the copper winding from being damaged in the forming process to the maximum extent, and greatly improves the forming quality of the tail coil.

Description

Method for forming tail of flat copper wire wave winding with small span, large cross section and small end extending torsion nose

Technical Field

The invention relates to a winding tool for a motor winding, in particular to a tail forming tool and a winding method for a flat copper wire wave winding with a small span and a large cross section and a small end extension twisting lug.

Background

Windings in a stator and a rotor of some motors are designed into flat copper wire wave windings, a twisting nose is arranged in the center of the head of each flat copper wire wave winding, an upper coil is a plurality of layers of flat copper wires which are stacked together, a lower coil is also a stacked flat copper wire, a straight line section of the upper coil and a straight line section of the lower coil are arranged in parallel with each other but not in the same plane, and the tail of each winding is arranged into a splayed shape with an outward opening; the wave winding coil realizes inversion transposition of an upper coil and a lower coil which are stacked in multiple layers through a twisting nose, namely, an upper flat copper wire of the upper coil, which is sequentially stacked from top to bottom, is transposed to a lower flat copper wire of the lower coil, which is sequentially stacked from bottom to top, after the twisting nose, so as to realize the purpose of optimizing the performance of the motor winding; the flat copper wire wave winding that the nose was turned round in the area has the difficult problem of coiling shaping, especially little span, big cross-section, turns round the nose end and stretches little wave winding, and its shaping is just more difficult, and to this kind of winding, prior art manufacture process is: firstly, winding a flat copper wire into a shuttle-shaped shape with 5-11 layers stacked, cutting off the arc at one end of the shuttle-shaped coil to form a shuttle-shaped U-shaped coil with an opening at one end, inserting the arc part at the closed end of the shuttle-shaped U-shaped coil into a fixing clamp of a special die, holding two straight edges of the shuttle-shaped U-shaped coil by two hands, and separating the straight edges to the two sides to form a splayed coil with a twisting nose; then bending two straight line sides of the splayed coil to enable the straight line sides to be parallel to each other to form a straight line section of the coil, and obtaining a twisted nose U-shaped coil; finally, bending two opening parts of the tail part of the U-shaped coil with the twisted nose to form an outer splayed tail part section with an outward opening, thereby completing the forming of the flat copper wire wave winding with the twisted nose; for the flat copper wire wave winding with small span, large cross section and small end extending twisting nose, the winding and forming are very difficult through the process.

Aiming at the difficult problem of the winding forming difficulty of the flat copper wire wave winding with the small span, the large cross section and the small end extending and twisting nose, the prior art usually adopts a method formed by welding the twisting nose, and the concrete process is as follows: respectively manufacturing an upper layer flat copper wire coil, a lower layer flat copper wire coil and a twisted nose connecting flat copper wire, then butting the head of the upper layer coil with the head of the lower layer coil, connecting the twisted nose with the flat copper wire, welding each layer of flat copper wire in the upper layer coil and each layer of flat copper wire in the lower layer coil together after transposition and butting, and realizing transposition of the upper and lower layer coil flat copper wires; the twist nose formed by the method has the defects of larger size of the end part of the twist nose and more hidden quality troubles, and also has the defects of complicated manufacturing procedures and longer time consumption; how to design a tool to directly twist and form the flat copper wire integrally and greatly improve the manufacturing efficiency of the flat copper wire becomes a problem to be solved on site; especially, when the twist nose is formed, the bent bevel edge of the head of the lower-layer flat copper wire coil needs to be bent downwards by a certain height so as to enable the distance between the upper layer and the lower layer of the coil to meet the design requirement, and the tool becomes a difficult point of tool design.

After the twisted nose of the flat copper wire wave winding coil is formed, the tail forming process of the wave winding needs to be carried out, and the specific process is as follows: firstly, clamping and fixing the straight edges of the upper and lower layers of windings which are parallel to each other but not in the same plane, and then forming an outer splayed tail section with an outward opening; because the multilayer coil stacks together, especially when the cross-section of flat copper line is great, stack the back together, have the whole very difficult problem of bending, the outward bulge's of department of bending phenomenon appears easily in the in-process of bending, how avoid appearing the bulge to accomplish the afterbody work of bending convenient laborsaving, also be another problem that needs the solution in the frock setting.

Disclosure of Invention

The invention provides a method for forming the tail part of a flat copper wire wave winding with a small span, a large cross section and a small end stretching and twisting lug, which realizes the high-efficiency integral bending and forming of the tail part of the flat copper wire wave winding with the small span, the large cross section and the small end stretching and twisting lug.

The invention solves the technical problems by the following technical scheme:

the general concept of the invention is: a combined tool capable of meeting the forming of all parts of the flat copper wire wave winding is designed, so that the aim of conveniently realizing the integral one-time complete forming of the flat copper wire wave winding is fulfilled; before the tool is used, the flat copper wire is wound into a stacked shuttle-shaped shape with 5-11 layers, the circular arc at one end of the shuttle-shaped coil is cut off to form a shuttle-shaped U-shaped coil with an opening at one end, the circular arc part at the closed end of the shuttle-shaped U-shaped coil is inserted into a fixing clamp of a special die, and two straight edges of the shuttle-shaped U-shaped coil are held by two hands and are separated towards the two sides, so that the splayed coil with the twisting nose is formed; the tooling takes a splayed coil with a twisting nose as an initial processing coil, and the splayed coil is processed into a flat copper wire wave winding with a small span, a large cross section and a small end extending twisting nose through the tooling; the tool can be divided into a head forming tool part of the wave winding, a straight line edge shaping and fixing tool part and an external splayed tail forming tool part of the wave winding; the head forming tool part of the wave winding is mainly characterized in that after a twisted nose of a splayed coil with the twisted nose is clamped and fixed through a nose positioning clamp plate and a positioning pin, the bent part of the oblique edge of the head of an upper coil is bent through the matching of a coil bent part positioning column and a roller type bending spanner; the bending is realized at the head bevel edge bending part of the lower coil through the combined matching of the coil bending part positioning column, the lower coil bevel edge pressing beam and the drum-type bending wrench, and an inclined plane with the same inclination angle as the top end surface of the lower coil bevel edge is designed on the lower bottom surface of the lower coil bevel edge pressing beam, so that the lower coil is not damaged or deformed in the downward and inward bending process in the pressing process, the coil head forming time is saved, the coil forming quality is improved, and the labor intensity of workers is reduced; the invention mainly comprises two angle steel beams which are parallel to each other and are not on the same horizontal plane, and the angle steel beams are used as a tool mould for shaping and fixing the linear edges of a coil; the tail forming tool part of the wave winding realizes the forming of the splayed tail of the coils with different sizes through the combination of the bending positioning columns at the tail of the coils and different connecting screw holes on the table board, and particularly, an L-shaped clamping plate is arranged at the bending position to effectively limit the outward bulge of the tail coil during bending, so that the defect that the bending position of the tail is bulged outwards and deformed is overcome; in addition, the coil bending positioning column and the drum-type bending wrench are skillfully combined, so that the drum on the wrench extrudes the coil in rolling, and the nondestructive bending molding of the bending position of the wave winding is realized.

A small-span large-section small-end torsion-lug flat copper wire wave winding tail forming tool comprises a tool base and a torsion-lug U-shaped coil; an upper coil head forming support platform and an upper coil tail forming support platform are respectively arranged on the rear side of the top end face of the tooling base, a lower coil head forming support platform and a lower coil tail forming support platform are respectively arranged on the front side of the top end face of the tooling base, the height of the top end face of the upper coil head forming support platform is the same as that of the top end face of the upper coil tail forming support platform, the height of the top end face of the lower coil head forming support platform is the same as that of the top end face of the lower coil tail forming support platform, and the height of the top end face of the upper coil head forming support platform is lower than that of the top end face of the lower coil head forming support platform; an upper coil straight line section forming supporting angle iron beam is arranged between the top end surface of an upper coil head forming supporting table and the top end surface of an upper coil tail forming supporting table, a lower coil straight line section forming supporting angle iron beam is arranged between the top end surface of a lower coil head forming supporting table and the top end surface of a lower coil tail forming supporting table, a right front turning plate hinging seat is arranged at the upper right end of the lower coil straight line section forming supporting angle iron beam, a lower coil straight line edge of a twist nose U-shaped coil is abutted in an angle iron groove of the lower coil straight line section forming supporting angle iron beam, a lower coil right turning plate type eccentric wheel clamping mechanism is hinged to the right front turning plate hinging seat, a lower coil straight line edge is clamped between the lower coil right turning plate type eccentric wheel clamping mechanism and the lower coil straight line section forming supporting angle iron beam, and a lower coil tail bending first certain amount is arranged on the top end surface of the lower coil tail forming supporting table respectively A positioning column connecting screw hole and a lower layer coil tail bending second positioning column connecting screw hole, a lower layer coil tail bending first positioning column is connected on the lower layer coil tail bending first positioning column connecting screw hole, a lower layer coil tail bending second positioning column is connected on the lower layer coil tail bending second positioning column connecting screw hole, a threaded upright column is vertically arranged at the center of the top end surface of the lower layer coil tail bending first positioning column, a threaded upright column is vertically arranged at the center of the top end surface of the lower layer coil tail bending second positioning column, an L-shaped limiting plate is inserted on the threaded upright column arranged at the center of the top end surface of the lower layer coil tail bending second positioning column, a U-shaped notch is arranged on a horizontal plate of the L-shaped limiting plate, the L-shaped limiting plate is inserted on the threaded upright column arranged at the center of the top end surface of the lower layer coil tail bending second positioning column through the U-shaped notch, and a first bending edge of the tail part of the lower-layer coil of the flat copper wire wave winding is arranged between the vertical plate of the L-shaped limiting plate and the outer side surface of the second positioning column for bending the tail part of the lower-layer coil.

The lower coil right turning plate type eccentric wheel clamping mechanism is formed by combining a turning plate, an eccentric column with steps, a coil linear edge pressing block and a rotating handle; the turning plate is hinged on a right front turning plate hinge seat on a lower coil straight line section forming support angle iron beam through a pair of hinge tongues on the turning plate, and an eccentric column hanging hole is formed in the turning plate; a first step column is eccentrically and fixedly arranged on the top end surface of the stepped eccentric column, a rotary handle connecting block is fixedly connected to the top end surface of the first step column, and a second step column with threads is fixedly connected to the top end surface of the rotary handle connecting block; a U-shaped groove is formed in the inner side face of the coil linear edge pressing block, and a strip hole is formed between the U-shaped groove and the upper top face of the coil linear edge pressing block; the coil straight line limit briquetting passes through the rectangular hole, from the top down, the activity cup joints on the first step post on the coil straight line limit briquetting, the eccentric column activity that makes the area step sets up in the U-shaped recess, turn over the board and hang the first step post of connecing the hole cross-under through eccentric column on exposing the first step post of coil straight line limit briquetting top terminal surface top, on wearing out the rotatory handle connection square above the turning over board top terminal surface, be connected with rotatory handle, on the threaded second step post above rotatory handle, the spiro union has rotatory handle lock nut.

The upper coil straight line edge of the twist nose U-shaped coil is abutted in an angle iron groove of an upper coil straight line section forming supporting angle iron cross beam, the inner side surface of the right top end of the upper coil straight line section forming supporting angle iron cross beam is connected with an upper coil right turning plate type eccentric wheel clamping mechanism, an upper coil straight line edge is clamped between the upper coil right turning plate type eccentric wheel clamping mechanism and the upper coil straight line section forming supporting angle iron cross beam, an upper coil tail bending third positioning column connecting screw hole and an upper coil tail bending fourth positioning column connecting screw hole are respectively arranged on the top end surface of an upper coil tail section forming supporting table, an upper coil tail bending third positioning column is connected on the upper coil tail bending third positioning column connecting screw hole, an upper coil tail bending fourth positioning column is connected on the upper coil tail bending fourth positioning column connecting screw hole, the center of the top end face of the third positioning column is bent at the tail of the upper coil, a threaded stand column is vertically arranged, the center of the top end face of the fourth positioning column is bent at the tail of the upper coil, the threaded stand column is vertically arranged, another L-shaped limiting plate is inserted into the threaded stand column arranged at the center of the top end face of the fourth positioning column bent at the tail of the upper coil, a U-shaped notch is formed in a horizontal plate of the other L-shaped limiting plate, the other L-shaped limiting plate is inserted into the threaded stand column arranged at the center of the top end face of the fourth positioning column bent at the tail of the upper coil through the U-shaped notch, and a first bent edge of the tail of the upper coil of the flat copper wire wave winding is arranged between a vertical plate of the other L-shaped limiting plate and the outer side face of the fourth positioning column bent at the tail of the upper coil.

A method for forming the tail part of a flat copper wire wave winding with a small span, a large cross section and a small end extending a twisting nose comprises a tooling base, a U-shaped coil with the twisting nose, a drum-type bending wrench and an L-shaped limiting plate, wherein a U-shaped notch is formed in a horizontal plate of the L-shaped limiting plate, a bolt upright post cross-connecting through hole is formed in the front end of a handle of the drum-type bending wrench, a core column connecting screw hole with internal threads is formed in a wrench handle on the rear side of the bolt upright post cross-connecting through hole, a core column with external threads is connected in the core column connecting screw hole with the internal threads, a locking nut with the external threads is arranged between the top end of the core column with the external threads and the top end face of the wrench handle, and a roller is movably sleeved at the lower end of the core column with the external threads; an upper coil head forming support platform and an upper coil tail forming support platform are respectively arranged on the rear side of the top end face of the tooling base, a lower coil head forming support platform and a lower coil tail forming support platform are respectively arranged on the front side of the top end face of the tooling base, the height of the top end face of the upper coil head forming support platform is the same as that of the top end face of the upper coil tail forming support platform, the height of the top end face of the lower coil head forming support platform is the same as that of the top end face of the lower coil tail forming support platform, and the height of the top end face of the upper coil head forming support platform is lower than that of the top end face of the lower coil head forming support platform; an upper-layer coil straight-line section forming support angle iron beam is arranged between the top end surface of the upper-layer coil head forming support table and the top end surface of the upper-layer coil tail forming support table, and a lower-layer coil straight-line section forming support angle iron beam is arranged between the top end surface of the lower-layer coil head forming support table and the top end surface of the lower-layer coil tail forming support table; a first positioning column connecting screw hole for bending the tail part of the lower coil and a second positioning column connecting screw hole for bending the tail part of the lower coil are respectively arranged on the top end surface of the lower coil tail part forming support table; a third positioning column connecting screw hole bent at the tail part of the upper coil and a fourth positioning column connecting screw hole bent at the tail part of the upper coil are respectively arranged on the top end surface of the upper coil tail forming support table; a right front turning plate hinging seat is arranged at the upper end of the right part of the supporting angle iron beam formed by the straight line section of the lower coil, and a right turning plate type eccentric wheel clamping mechanism of the lower coil is hinged on the right front turning plate hinging seat; the lower coil right turning plate type eccentric wheel clamping mechanism is formed by combining a turning plate, an eccentric column with steps, a coil linear edge pressing block and a rotating handle; the turning plate is hinged on a right front turning plate hinge seat on a lower coil straight line section forming support angle iron beam through a pair of hinge tongues on the turning plate, and an eccentric column hanging hole is formed in the turning plate; a first step column is eccentrically and fixedly arranged on the top end surface of the stepped eccentric column, a rotary handle connecting block is fixedly connected to the top end surface of the first step column, and a second step column with threads is fixedly connected to the top end surface of the rotary handle connecting block; a U-shaped groove is formed in the inner side face of the coil linear edge pressing block, and a strip hole is formed between the U-shaped groove and the upper top face of the coil linear edge pressing block; the coil straight-line side pressing block is movably sleeved on a first step column on the coil straight-line side pressing block from top to bottom through the strip-shaped hole, so that an eccentric column with steps is movably arranged in the U-shaped groove, the turning plate is connected to the first step column exposed above the top end face of the coil straight-line side pressing block in a penetrating mode through the eccentric column hanging hole, a rotating handle is connected to a rotating handle connecting block penetrating out of the upper portion of the top end face of the turning plate, and a rotating handle locking nut is screwed on a threaded second step column above the rotating handle; the method is characterized by comprising the following steps:

firstly, turning a right turning plate type eccentric wheel clamping mechanism of a lower-layer coil downwards to the outer side of a linear edge of the lower-layer coil, enabling an eccentric column with steps to backwards extrude the linear edge of the lower-layer coil by rotating a rotary handle, and clamping the linear edge of the lower-layer coil between the eccentric column with steps and a linear edge forming support angle iron beam of the lower-layer coil;

secondly, bending a first positioning column connecting screw hole at the tail part of the lower coil, connecting the tail part of the lower coil, bending the first positioning column, and enabling the tail end of the lower coil to be abutted against the inner side of the bent first positioning column at the tail part of the lower coil;

thirdly, a drum-type bending wrench is sleeved on a vertical upright post on the top end face of a first positioning post bent at the tail part of the lower-layer coil through a bolt upright post in a penetrating way, the drum-type bending wrench is rotated towards the right front direction, a drum is enabled to rotate and move along an arc line to extrude the tail part of the lower-layer coil, and a first bent edge at the tail part of the lower-layer coil is formed by bending;

fourthly, bending a second positioning column at the tail part of the lower coil to connect with a screw hole, connecting the bent second positioning column at the tail part of the lower coil, connecting an L-shaped limiting plate on a vertically arranged threaded upright column at the top end of the bent second positioning column at the tail part of the lower coil through a U-shaped notch, and enabling the tail part of the lower coil to be arranged between a vertical plate of the L-shaped limiting plate and the bent second positioning column at the tail part of the lower coil;

fifthly, sleeving a drum type bending wrench on a vertically arranged threaded upright post at the top end of a second positioning post bent at the tail part of the lower coil, and enabling a drum on the drum type bending wrench to be abutted against the outer side face of the tail part of the lower coil;

and seventhly, rotating the drum-type bending wrench anticlockwise, rotating the drum along an arc line, extruding and bending the tail part of the lower-layer coil, bending the second positioning column at the tail part of the lower-layer coil to be a supporting point in the right rear direction, and bending and forming a second bending edge at the tail part of the lower-layer coil.

Eighthly, turning down the right turning plate type eccentric wheel clamping mechanism of the upper coil to the outer side of the linear edge of the upper coil; the structure of the upper-layer coil right-part turning plate type eccentric wheel clamping mechanism is completely the same as that of the lower-layer coil right-part turning plate type eccentric wheel clamping mechanism; rotating the rotating handle to enable the eccentric column with the step to extrude the linear edge of the upper coil forwards, and clamping the linear edge of the upper coil between the eccentric column with the step and the linear edge forming support angle iron beam of the upper coil;

ninth, bending a third positioning column at the tail part of the upper-layer coil, connecting the third positioning column at the tail part of the upper-layer coil on a third positioning column connecting screw hole, and bending the third positioning column at the tail part of the upper-layer coil to enable the tail end of the upper-layer coil to be abutted against the inner side of the third positioning column bent at the tail part of the upper-layer coil;

tenth, a roller type bending wrench is sleeved on a vertical upright post on the top end face of a third positioning column bent at the tail part of the upper coil through a bolt upright post in a penetrating way, the roller type bending wrench is rotated towards the right front direction, a roller rotates and moves along an arc line to extrude the tail part of the upper coil, and a first bent edge of the tail part of the upper coil is formed by bending;

step ten, bending a fourth positioning column at the tail part of the upper coil, connecting the fourth positioning column at the tail part of the upper coil with a connecting screw hole, connecting an L-shaped limiting plate on a vertically arranged threaded upright post at the top end of the fourth positioning column at the tail part of the upper coil in a penetrating way through a U-shaped notch, and enabling the tail part of the upper coil to be arranged between a vertical plate of the L-shaped limiting plate and the fourth positioning column at the tail part of the upper coil;

a twelfth step of sleeving a drum type bending wrench on a vertically arranged threaded stand column at the top end of a fourth positioning column bent at the tail part of the upper coil, and enabling a drum on the drum type bending wrench to abut against the outer side surface of the tail part of the upper coil;

and thirdly, rotating the drum-type bending wrench clockwise, rotating the drum along an arc line, extruding and bending the tail part of the upper coil, bending the fourth positioning column bent at the tail part of the upper coil to the right front direction as a supporting point, and bending to form a second bent edge at the tail part of the upper coil.

The invention greatly improves the tail forming efficiency of the flat copper wire wave winding which is stacked in multiple layers, protects the copper winding from being damaged in the forming process to the maximum extent, and greatly improves the forming quality of the tail coil.

Drawings

Fig. 1 is a schematic view of the structure of the present invention when bending the first bending edge 408 of the tail portion of the lower coil;

fig. 2 is a schematic structural diagram of the present invention when bending the second bending edge 409 of the tail of the lower coil;

FIG. 3 is a schematic diagram of the structure of the present invention after the winding is completely bent;

FIG. 4 is a schematic view of the lower coil right panel-turnover eccentric clamping mechanism 302 of the present invention;

fig. 5 is a schematic structural diagram of the flap 311 of the present invention;

FIG. 6 is a schematic structural view of the stepped eccentric post 315 of the present invention;

FIG. 7 is a schematic diagram of the construction of the coil linear side compact 316 of the present invention;

fig. 8 is a schematic structural view of an L-shaped limiting plate 601 of the invention;

FIG. 9 is a schematic structural view of a twist-nose U-shaped coil of the present invention;

FIG. 10 is a schematic structural diagram of a formed small-span, large-cross-section, small-end-extension-twist-nose flat copper wave winding according to the present invention;

FIG. 11 is a schematic view of the present invention tool during bending of the lower coil head;

FIG. 12 is a schematic view of the present invention showing the structure of the upper coil head being bent;

FIG. 13 is a schematic structural view of a fixed table of the inventive tool;

FIG. 14 is a schematic structural view of a fixed table of the tooling of the present invention when an upper bending positioning column and a turnover type eccentric wheel clamping mechanism are installed;

FIG. 15 is a schematic diagram of the construction of the splayed coil with twist noses of the present invention;

fig. 16 is a schematic structural view of a hold-down beam 801 of the present invention;

fig. 17 is a schematic structural view of a drum bending wrench 701 according to the present invention;

fig. 18 is a schematic structural view of the lower-bevel-bent positioning post 201 of the lower-layer coil header of the present invention.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings:

a small-span large-section small-end torsion-lug flat copper wire wave winding tail forming tool comprises a tool base 1 and a torsion-lug U-shaped coil, wherein the tool takes the torsion-lug U-shaped coil as an initial workpiece, and the torsion-lug U-shaped coil is bent and formed into a small-span large-section small-end torsion-lug flat copper wire wave winding through the tool; an upper coil head forming support platform 101 and an upper coil tail forming support platform 102 are respectively arranged on the rear side of the top end face of the tooling base 1, a lower coil head forming support platform 103 and a lower coil tail forming support platform 104 are respectively arranged on the front side of the top end face of the tooling base 1, the height of the top end face of the upper coil head forming support platform 101 is the same as that of the top end face of the upper coil tail forming support platform 102, the height of the top end face of the lower coil head forming support platform 103 is the same as that of the top end face of the lower coil tail forming support platform 104, and the height of the top end face of the upper coil head forming support platform 101 is lower than that of the top end face of the lower coil head forming support platform 103; an upper coil straight-line section forming supporting angle iron beam 105 is arranged between the top end surface of an upper coil head forming supporting platform 101 and the top end surface of an upper coil tail forming supporting platform 102, a lower coil straight-line section forming supporting angle iron beam 106 is arranged between the top end surface of a lower coil head forming supporting platform 103 and the top end surface of a lower coil tail forming supporting platform 104, a right front turning plate hinging seat 115 is arranged at the upper right end of the lower coil straight-line section forming supporting angle iron beam 106, the lower coil straight line edge of a twist nose U-shaped coil abuts against an angle iron groove of the lower coil straight-line section forming supporting angle iron beam 106, a lower coil right turning plate type eccentric wheel clamping mechanism 302 is hinged on the right front turning plate hinging seat 115, and the lower coil right turning plate type eccentric wheel clamping mechanism 302 and the lower coil forming supporting angle iron beam 106 are arranged between the lower coil right turning plate type eccentric wheel clamping mechanism 302 and the lower coil forming supporting angle iron beam 106, the lower coil straight edge 407 is clamped; the lower-layer coil right-part turnover type eccentric wheel clamping mechanism 302 and the lower-layer coil left-part turnover type eccentric wheel clamping mechanism 301 are respectively arranged on the lower-layer coil straight line section forming supporting angle iron cross beam 106, the upper-layer coil right-part turnover type eccentric wheel clamping mechanism 304 and the upper-layer coil left-part turnover type eccentric wheel clamping mechanism 303 are respectively arranged on the upper-layer coil straight line section forming supporting angle iron cross beam 105, the four turnover type eccentric wheel clamping mechanisms are completely the same in structure, and the straight line edges of the coils can be shaped through the four turnover type eccentric wheel clamping mechanisms; a lower coil tail bending first positioning column connecting screw hole 119 and a lower coil tail bending second positioning column connecting screw hole 120 are respectively arranged on the top end surface of the lower coil tail forming support platform 104, a lower coil tail bending first positioning column 203 is connected on the lower coil tail bending first positioning column connecting screw hole 119, a lower coil tail bending second positioning column 204 is connected on the lower coil tail bending second positioning column connecting screw hole 120, a threaded column is vertically arranged at the center of the top end surface of the lower coil tail bending first positioning column 203, a threaded column is vertically arranged at the center of the top end surface of the lower coil tail bending second positioning column 204, an L-shaped limiting plate 601 is inserted on the threaded column arranged at the center of the top end surface of the lower coil tail bending second positioning column 204, a U-shaped notch is arranged on the horizontal plate of the L-shaped limiting plate 601, the L-shaped limiting plate 601 is connected to a threaded upright column arranged in the center of the top end face of the lower coil tail bending second positioning column 204 in an inserting mode through a U-shaped notch, and a lower coil tail first bending edge 408 of the flat copper wire wave winding is arranged between a vertical plate of the L-shaped limiting plate 601 and the outer side face of the lower coil tail bending second positioning column 204.

The lower coil right turning plate type eccentric wheel clamping mechanism 302 is formed by combining a turning plate 311, an eccentric column 315 with a step, a coil linear edge pressing block 316 and a rotating handle 314; the turning plate 311 is hinged on a right front turning plate hinge seat 115 on the lower coil straight line section forming support angle iron beam 106 through a pair of hinge tongues 3112 on the turning plate 311, and an eccentric column hanging hole 3111 is formed on the turning plate 311; a first step column 317 is eccentrically and fixedly arranged on the top end surface of the stepped eccentric column 315, a rotary handle connecting block 318 is fixedly connected on the top end surface of the first step column 317, and a second step column 312 with screw threads is fixedly connected on the top end surface of the rotary handle connecting block 318; a U-shaped groove 3162 is arranged on the inner side surface of the coil straight edge pressing block 316, and a strip-shaped hole 3161 is arranged between the U-shaped groove 3162 and the upper top surface of the coil straight edge pressing block 316; the coil straight line side pressing block 316 is movably sleeved on a first step column 317 on the coil straight line side pressing block 316 from top to bottom through a strip hole 3161, so that an eccentric column 315 with steps is movably arranged in a U-shaped groove 3162, the turning plate 311 is connected with a rotary handle 314 through an eccentric column hanging hole 3111 and is connected on the first step column 317 exposed above the top end surface of the coil straight line side pressing block 316 in a penetrating way, a rotary handle locking nut 313 is screwed on a second step column 312 with threads above the rotary handle 314, the rotary handle 314 rotates to drive the eccentric column 315 with steps to rotate, thereby realizing that the eccentric column 315 with steps is close to or far away from the lower coil straight line section molding support angle iron crossbeam 106, and the eccentric column 315 with steps passes through the strip hole 3161 on the coil straight line side pressing block 316, and pushing the linear edge pressing block 316 of the coil to press the linear edge of the coil tightly or loosening the linear edge of the coil to shape and clamp the linear edge of the coil.

The upper coil straight line edge of the twist nose U-shaped coil is abutted against an angle iron groove of an upper coil straight line section forming supporting angle iron beam 105, the inner side surface of the top end of the right side of the upper coil straight line section forming supporting angle iron beam 105 is connected with an upper coil right turning plate type eccentric wheel clamping mechanism 304, an upper coil straight line edge 403 is clamped between the upper coil right turning plate type eccentric wheel clamping mechanism 304 and the upper coil straight line section forming supporting angle iron beam 105, an upper coil straight line edge is arranged on the top end surface of an upper coil tail forming supporting platform 102, an upper coil tail bending third positioning column connecting screw hole 121 and an upper coil tail bending fourth positioning column connecting screw hole 122 are respectively arranged on the top end surface of the upper coil tail forming supporting platform 102, an upper coil tail bending third positioning column 205 is connected on the upper coil tail bending third positioning column connecting screw hole 121, an upper coil tail bending fourth positioning column 206 is connected on the upper coil tail bending fourth positioning column connecting screw hole 122, a threaded upright column is vertically arranged at the center of the top end face of the third positioning column 205 bent at the tail part of the upper-layer coil, another L-shaped limiting plate is inserted into the threaded upright column arranged at the center of the top end face of the fourth positioning column 206 bent at the tail part of the upper-layer coil, a U-shaped notch is formed in a horizontal plate of the other L-shaped limiting plate, the other L-shaped limiting plate is inserted into the threaded upright column arranged at the center of the top end face of the fourth positioning column 206 bent at the tail part of the upper-layer coil through the U-shaped notch, and a first bent edge 404 at the tail part of the upper-layer coil of a flat copper wire wave winding is arranged between a vertical plate of the other L-shaped limiting plate and the outer side face of the fourth positioning column 206 bent at the tail part of the upper-layer coil; the structure of a lower coil tail bending first positioning column 203, a lower coil tail bending second positioning column 204, an upper coil tail bending third positioning column 205, an upper coil tail bending fourth positioning column 206, a lower coil head lower bevel edge bending positioning column 201 and an upper coil head bevel edge bending positioning column 202 of the invention is completely the same, the lower parts of the lower coil tail bending third positioning column, the upper coil tail bending fourth positioning column 206, the lower coil head lower bevel edge bending positioning column 201 and the upper coil head bevel edge bending positioning column 202 are fixedly screwed with a workbench through lower bolts, a middle main body plays a role of a supporting point for bending coils, a stud at the upper part of the lower coil head is a sleeving supporting point of a bolt upright column penetrating through a through hole 7011 arranged at the front end of a handle of a roller type bending wrench 701, the roller type bending wrench 701 takes the stud at the upper part as a circle center, a roller 7013 at the lower part of the roller type bending wrench 701 is self-transmitting and rotates to realize the bending of the coils, the roller 7013 is movably sleeved with the lower part of an externally threaded core column 7012, the roller 7013 can not only self-transmitting, and the lifting device can flexibly lift, overcomes the height change of the working table, realizes the adaptive bending of the coil, and protects the coil at the bending position from being damaged.

A method for forming the tail part of a flat copper wire wave winding with a small span, a large cross section and a small end extending twist nose comprises a tooling base 1, a U-shaped coil with the twist nose, a roller type bending wrench 701 and an L-shaped limiting plate 601, wherein a U-shaped notch is formed in a horizontal plate of the L-shaped limiting plate 601, a bolt upright post cross-connecting through hole 7011 is formed in the front end of a handle of the roller type bending wrench 701, a wrench handle at the rear side of the bolt upright post cross-connecting through hole 7011 is provided with a core column connecting screw hole with internal threads, a core column 7012 with external threads is connected in the core column connecting screw hole with the internal threads, a locking nut with the external threads is arranged between the top end of the core column 7012 with the external threads and the top end face of the wrench handle, and a roller 7013 is movably sleeved at the lower end of the core column 7012 with the external threads; an upper coil head forming support platform 101 and an upper coil tail forming support platform 102 are respectively arranged on the rear side of the top end face of the tooling base 1, a lower coil head forming support platform 103 and a lower coil tail forming support platform 104 are respectively arranged on the front side of the top end face of the tooling base 1, the height of the top end face of the upper coil head forming support platform 101 is the same as that of the top end face of the upper coil tail forming support platform 102, the height of the top end face of the lower coil head forming support platform 103 is the same as that of the top end face of the lower coil tail forming support platform 104, and the height of the top end face of the upper coil head forming support platform 101 is lower than that of the top end face of the lower coil head forming support platform 103; an upper-layer coil straight-line section forming support angle iron beam 105 is arranged between the top end surface of the upper-layer coil head forming support table 101 and the top end surface of the upper-layer coil tail forming support table 102, and a lower-layer coil straight-line section forming support angle iron beam 106 is arranged between the top end surface of the lower-layer coil head forming support table 103 and the top end surface of the lower-layer coil tail forming support table 104; a lower coil tail bending first positioning column connecting screw hole 119 and a lower coil tail bending second positioning column connecting screw hole 120 are respectively arranged on the top end surface of the lower coil tail forming support table 104; a third positioning column connecting screw hole 121 bent at the tail part of the upper coil and a fourth positioning column connecting screw hole 122 bent at the tail part of the upper coil are respectively arranged on the top end surface of the upper coil tail part forming support table 102; a right front turning plate hinge seat 115 is arranged at the upper end of the right part of the lower coil straight-line section molding support angle iron cross beam 106, and a lower coil right turning plate type eccentric wheel clamping mechanism 302 is hinged on the right front turning plate hinge seat 115; the lower coil right turning plate type eccentric wheel clamping mechanism 302 is formed by combining a turning plate 311, an eccentric column 315 with a step, a coil linear edge pressing block 316 and a rotating handle 314; the turning plate 311 is hinged on a right front turning plate hinge seat 115 on the lower coil straight line section forming support angle iron beam 106 through a pair of hinge tongues 3112 on the turning plate 311, and an eccentric column hanging hole 3111 is formed on the turning plate 311; a first step column 317 is eccentrically and fixedly arranged on the top end surface of the stepped eccentric column 315, a rotary handle connecting block 318 is fixedly connected on the top end surface of the first step column 317, and a second step column 312 with threads is fixedly connected on the top end surface of the rotary handle connecting block 318; a U-shaped groove 3162 is arranged on the inner side surface of the coil straight edge pressing block 316, and a strip-shaped hole 3161 is arranged between the U-shaped groove 3162 and the upper top surface of the coil straight edge pressing block 316; the coil straight-line side pressing block 316 is movably sleeved on a first step column 317 on the coil straight-line side pressing block 316 from top to bottom through a long-strip hole 3161, so that an eccentric column 315 with steps is movably arranged in a U-shaped groove 3162, the turning plate 311 is penetrated on the first step column 317 exposed above the top end face of the coil straight-line side pressing block 316 through an eccentric column hanging hole 3111, a rotating handle 314 is connected on a rotating handle connecting block 318 penetrating above the top end face of the turning plate 311, and a rotating handle locking nut 313 is screwed on a threaded second step column 312 above the rotating handle 314; the method is characterized by comprising the following steps:

firstly, turning down the right turning plate type eccentric wheel clamping mechanism 302 of the lower coil to the outer side of the linear edge 407 of the lower coil, rotating the rotating handle 314 to enable the stepped eccentric column 315 to backwards press the linear edge 407 of the lower coil, and clamping the linear edge 407 of the lower coil between the stepped eccentric column 315 and the linear edge forming support angle iron beam 106 of the lower coil;

secondly, bending a first positioning column connecting screw hole 119 at the tail part of the lower coil, connecting the tail part of the lower coil, bending a first positioning column 203, and enabling the tail end of the lower coil to be abutted against the inner side of the bent first positioning column 203 at the tail part of the lower coil;

thirdly, a roller type bending wrench 701 is sleeved on a vertical upright post on the top end face of the lower-layer coil tail bending first positioning post 203 through a bolt upright post penetrating through a through hole 7011, the roller type bending wrench 701 is rotated towards the right front direction, a roller 7013 rotates and moves along an arc line to extrude the tail of the lower-layer coil, and a first bending edge 408 of the tail of the lower-layer coil is formed by bending;

fourthly, bending a second positioning column at the tail part of the lower coil to be connected with the screw hole 120, connecting a bent second positioning column 204 at the tail part of the lower coil, penetrating an L-shaped limiting plate 601 on a vertically arranged threaded upright column at the top end of the bent second positioning column 204 at the tail part of the lower coil through a U-shaped notch, and enabling the tail part of the lower coil to be arranged between a vertical plate of the L-shaped limiting plate 601 and the bent second positioning column 204 at the tail part of the lower coil;

fifthly, sleeving a roller type bending wrench 701 on a vertically arranged threaded upright column at the top end of the second positioning column 204 for bending the tail part of the lower coil, and enabling a roller 7013 on the roller type bending wrench 701 to abut against the outer side face of the tail part of the lower coil;

seventhly, rotating the roller type bending wrench 701 anticlockwise, rotating a roller 7013 along an arc line, extruding and bending the tail of the lower-layer coil, bending the second positioning column 204 at the tail of the lower-layer coil to be a supporting point in the right-rear direction, and bending to form a second bent edge 409 at the tail of the lower-layer coil;

according to the invention, the positioning columns are in threaded connection with the working table surface, so that the interference between the coil and the positioning columns in bending is overcome, and the positioning columns can be conveniently installed and detached according to an operation program.

Eighthly, turning down the right turning plate type eccentric wheel clamping mechanism 304 of the upper coil to the outer side of the straight edge 403 of the upper coil; the structure of the upper-layer coil right-turning plate type eccentric wheel clamping mechanism 304 is completely the same as that of the lower-layer coil right-turning plate type eccentric wheel clamping mechanism 302; rotating the rotating handle to enable the eccentric column with the step to extrude the linear edge 403 of the upper coil forwards, and clamping the linear edge 403 of the upper coil between the eccentric column with the step and the linear edge molding support angle iron beam 105 of the upper coil;

ninth, bending a third positioning column connecting screw hole 121 at the tail part of the upper coil, connecting the tail part of the upper coil, bending a third positioning column 205, and enabling the tail end of the upper coil to abut against the inner side of the bent third positioning column 205 at the tail part of the upper coil;

tenth, a roller type bending wrench 701 is sleeved on a vertical upright post on the top end face of the third positioning column 205 bent at the tail part of the upper coil through a bolt upright post penetrating through a through hole 7011, the roller type bending wrench 701 is rotated towards the right front direction, a roller 7013 rotates and moves along an arc line to extrude the tail part of the upper coil, and a first bending edge 404 at the tail part of the upper coil is formed in a bending mode;

step eleven, connecting a fourth positioning column 206 bent at the tail part of the upper-layer coil to the fourth positioning column connecting screw hole 122 bent at the tail part of the upper-layer coil, and connecting an L-shaped limiting plate 601 to a vertically arranged threaded upright column at the top end of the fourth positioning column 206 bent at the tail part of the upper-layer coil in a penetrating manner through a U-shaped notch, so that the tail part of the upper-layer coil is arranged between a vertical upright plate of the L-shaped limiting plate 601 and the fourth positioning column 206 bent at the tail part of the upper-layer coil;

step ten, sleeving a roller type bending wrench 701 on a vertically arranged threaded upright column at the top end of the fourth positioning column 206 bent at the tail part of the upper coil, and enabling a roller 7013 on the roller type bending wrench 701 to abut against the outer side face of the tail part of the upper coil;

and a thirteenth step of rotating the drum type bending wrench 701 clockwise, rotating the drum 7013 along an arc line, extruding and bending the tail of the upper coil, bending the fourth positioning column 206, which is bent by the tail of the upper coil, to the right front direction as a supporting point, and bending to form a second bent edge 405 at the tail of the upper coil.

A small-span large-section small-end-stretching torsion-nose flat copper wire wave winding head forming tool comprises a tool base 1 and a splayed coil with a torsion-nose; the head of the splayed coil with the twisting nose is provided with the twisting nose 401, and the twisting nose 401 is provided with a twisting nose hole 410; an upper coil head forming support platform 101 and an upper coil tail forming support platform 102 are respectively arranged on the rear side of the top end face of the tooling base 1, a lower coil head forming support platform 103 and a lower coil tail forming support platform 104 are respectively arranged on the front side of the top end face of the tooling base 1, the height of the top end face of the upper coil head forming support platform 101 is the same as that of the top end face of the upper coil tail forming support platform 102, the height of the top end face of the lower coil head forming support platform 103 is the same as that of the top end face of the lower coil tail forming support platform 104, and the height of the top end face of the upper coil head forming support platform 101 is lower than that of the top end face of the lower coil head forming support platform 103; an upper coil straight line section forming supporting angle iron beam 105 is arranged between the top end surface of an upper coil head forming supporting platform 101 and the top end surface of an upper coil tail forming supporting platform 102, a lower coil straight line section forming supporting angle iron beam 106 is arranged between the top end surface of a lower coil head forming supporting platform 103 and the top end surface of a lower coil tail forming supporting platform 104, a twisted nose inserting groove rear vertical plate 107 is arranged on the left front side of the top end surface of the upper coil head forming supporting platform 101, a twisted nose inserting groove front vertical plate 108 is arranged on the left rear side of the top end surface of the lower coil head forming supporting platform 103, a twisted nose inserting groove 109 is formed between the twisted nose inserting groove rear vertical plate 107 and the twisted nose inserting groove front vertical plate 108, a twisted nose rear penetrating hole 110 is arranged on the twisted nose inserting groove rear vertical plate 107, and a positioning pin is arranged on the twisted nose inserting groove front vertical plate 108, a front through hole 111 of a twisted nose positioning pin is arranged, an upper coil head inclined edge bending positioning column connecting screw hole 118 is arranged on the top end face of an upper coil head forming supporting platform 101 between a rear vertical plate 107 of a twisted nose inserting groove and an upper coil straight line forming supporting angle iron cross beam 105, an upper coil head inclined edge bending positioning column connecting screw hole 202 is screwed on the upper coil head inclined edge bending positioning column connecting screw hole 118, a lower coil head inclined edge bending positioning column connecting screw hole 113 is arranged on the top end face of a lower coil head forming supporting platform 103 between a front vertical plate 108 of the twisted nose inserting groove and a lower coil straight line forming supporting angle iron cross beam 106, and a lower coil head inclined edge bending positioning column connecting screw hole 113 is screwed on the lower coil head inclined edge bending positioning column connecting screw hole 113 and a lower coil head inclined edge bending positioning column 201 is screwed on the lower coil head inclined edge bending positioning column connecting screw hole 113; a threaded upright column 112 for penetrating and connecting the outer end of a lower pressing beam is fixedly arranged on the top end face of the lower coil head forming support table 103 on the front side of the vertical plate 108 at the front part of the twisted nose inserting groove, a bolt upright column is vertically arranged at the center of the top end face of the lower bevel edge bending positioning column 201 of the lower coil head, and another bolt upright column is vertically arranged at the center of the top end face of the upper coil head bevel edge bending positioning column 202; a twist nose 401 of the splayed coil with the twist nose is inserted in the twist nose insertion groove 109, and a twist nose limiting pin 501 is inserted between the rear part through hole 110 of the twist nose positioning pin and the front part through hole 111 of the twist nose positioning pin; the upper-layer coil head of the splayed coil with the twisting nose is abutted against the rear side face of the bevel edge bending positioning column 202 of the upper-layer coil head; the lower-layer coil head of the splayed coil with the twist nose is abutted against the front side face of the lower bevel edge bending positioning column 201 of the lower-layer coil head, a pressing beam 801 is movably connected between the threaded upright column 112 and a bolt upright column on the lower bevel edge bending positioning column 201 of the lower-layer coil head in a penetrating mode, the pressing beam 801 is arranged right above the lower-layer coil head of the splayed coil with the twist nose, a pressing nut 901 is screwed at the top end of the threaded upright column 112, another pressing nut is screwed at the top end of the bolt upright column of the lower bevel edge bending positioning column 201 of the lower-layer coil head, and the pressing nut 901 and the another pressing nut are connected on the top end face of the pressing beam 801 in a pressure-sharing mode.

The lower bottom surface 8011 of the lower pressing beam 801 is an inclined surface, and the inclined angle of the lower bottom surface 8011 is the same as the inclined angle of the upper top surface of the lower coil of the splayed coil with the twisted nose; a roller type bending wrench 701 is movably sleeved at the top end of the bolt upright post of the lower-layer coil head lower oblique edge bending positioning column 201 above the other pressing nut, the front end of the drum-type bending wrench 701 is provided with a bolt upright post through hole 7011, a core column connecting screw hole with internal threads is arranged on the wrench handle at the rear side of the bolt upright post penetrating through hole 7011, a core column 7012 with external threads is screwed in the core column connecting screw hole with internal threads, a locking nut with the external thread stem 7012 is arranged between the top end of the stem 7012 with the external thread and the top end surface of the wrench handle, a roller 7013 and a roller bending wrench 701 are movably sleeved at the lower end of the stem 7012 with the external thread, the cylinder 7013 is movably sleeved on the top end of the bolt upright post of the lower bevel edge bending positioning column 201 of the lower coil head part through the bolt upright post penetrating through hole 7011, and abuts against the front side surface of the lower coil head part of the splayed coil with the twisting nose.

A roller type bending wrench 701 is movably sleeved at the top end of the other bolt upright column on the upper-layer coil head oblique edge bending positioning column 202, a bolt upright post cross-connecting through hole 7011 is arranged at the front end of the handle of the drum type bending wrench 701, a wrench handle at the rear side of the bolt upright post cross-connecting through hole 7011 is provided with a core column connecting screw hole with internal threads, a stem 7012 with external threads is connected in the stem connecting screw hole with the internal threads, a locking nut 7012 with the external threads is arranged between the top end of the stem 7012 with the external threads and the top end surface of the wrench handle, a roller 7013 and a roller bending wrench 701 are movably sleeved at the lower end of the core column 7012 with the external thread, the top end of the bolt upright post of the bevel edge bending positioning column 202 of the head part of the upper layer coil is movably sleeved by the bolt upright post through-connecting the through hole 7011, and the roller 7013 is abutted against the rear side surface of the head part of the upper layer coil of the splayed coil with the twisting nose.

A method for forming the head of a flat copper wire wave winding with a small span, a large cross section and a small end extension twisting nose comprises a tooling base 1, a splayed coil with a twisting nose and a roller type bending spanner 701, wherein a bolt upright post cross-connection through hole 7011 is arranged at the front end of a handle of the roller type bending spanner 701, a core column connecting screw hole with internal threads is arranged on a spanner handle at the rear side of the bolt upright post cross-connection through hole 7011, a core column with external threads 7012 is connected in a core column connecting screw hole with internal threads, a locking nut with the external threads 7012 is arranged between the top end of the core column with external threads 7012 and the top end face of the spanner handle, and a roller 7013 is movably sleeved at the lower end of the core column with external threads 7012; the head of the splayed coil with the twisting nose is provided with the twisting nose 401, and the twisting nose 401 is provided with a twisting nose hole 410; an upper coil head forming support platform 101 and an upper coil tail forming support platform 102 are respectively arranged on the rear side of the top end face of the tooling base 1, a lower coil head forming support platform 103 and a lower coil tail forming support platform 104 are respectively arranged on the front side of the top end face of the tooling base 1, the height of the top end face of the upper coil head forming support platform 101 is the same as that of the top end face of the upper coil tail forming support platform 102, the height of the top end face of the lower coil head forming support platform 103 is the same as that of the top end face of the lower coil tail forming support platform 104, and the height of the top end face of the upper coil head forming support platform 101 is lower than that of the top end face of the lower coil head forming support platform 103; an upper coil straight line section forming supporting angle iron beam 105 is arranged between the top end surface of an upper coil head forming supporting platform 101 and the top end surface of an upper coil tail forming supporting platform 102, a lower coil straight line section forming supporting angle iron beam 106 is arranged between the top end surface of a lower coil head forming supporting platform 103 and the top end surface of a lower coil tail forming supporting platform 104, a twisted nose inserting groove rear vertical plate 107 is arranged on the left front side of the top end surface of the upper coil head forming supporting platform 101, a twisted nose inserting groove front vertical plate 108 is arranged on the left rear side of the top end surface of the lower coil head forming supporting platform 103, a twisted nose inserting groove 109 is formed between the twisted nose inserting groove rear vertical plate 107 and the twisted nose inserting groove front vertical plate 108, a twisted nose rear penetrating hole 110 is arranged on the twisted nose inserting groove rear vertical plate 107, and a positioning pin is arranged on the twisted nose inserting groove front vertical plate 108, a front through hole 111 of a twist-nose positioning pin is arranged, an upper coil head inclined edge bending positioning column connecting screw hole 118 is arranged on the top end face of an upper coil head forming supporting platform 101 between a rear vertical plate 107 of the twist-nose inserting groove and an upper coil straight line forming supporting angle iron cross beam 105, an upper coil head inclined edge bending positioning column connecting screw hole 118 is arranged on the upper coil head inclined edge bending positioning column connecting screw hole 118, an upper coil head inclined edge bending positioning column 202 is screwed on the upper coil head inclined edge bending positioning column 202, a lower coil head inclined edge bending positioning column connecting screw hole 113 is arranged on the top end face of a lower coil head forming supporting platform 103 between a front vertical plate 108 of the twist-nose inserting groove and a lower coil straight line forming supporting angle iron cross beam 106, and a lower coil head inclined edge bending positioning column 201 is screwed on the lower coil head inclined edge bending positioning column connecting screw hole 113; a threaded upright column 112 for movably penetrating and connecting the outer end of the lower pressing beam is fixedly arranged on the top end face of the lower coil head forming support table 103 on the front side of the vertical plate 108 at the front part of the twisted nose inserting groove, a bolt upright column is vertically arranged at the center of the top end face of the positioning column 201 bent at the lower bevel edge of the lower coil head, and another bolt upright column is vertically arranged at the center of the top end face of the positioning column 202 bent at the bevel edge of the upper coil head; the method is characterized by comprising the following steps:

firstly, inserting a twisting lug 401 on the splayed coil with the twisting lug into a twisting lug insertion groove 109, so that an upper-layer coil of the splayed coil with the twisting lug is arranged at the rear part of the top end face of a lower-layer coil head forming support platform 103, and the head part of the upper-layer coil of the splayed coil with the twisting lug is abutted to the rear side face of a bent positioning column 202 at the inclined edge of the head part of the upper-layer coil; arranging a lower-layer coil of the splayed coil with the twisted nose at the front part of the top end surface of the lower-layer coil head forming support platform 103, and enabling the lower-layer coil head of the splayed coil with the twisted nose to be abutted against the front side surface of the lower bevel edge bending positioning column 201 of the lower-layer coil head;

secondly, inserting a positioning pin 501 between a front part through hole 111 of the twist-nose positioning pin and a rear part through hole 110 of the twist-nose positioning pin, wherein the inserting positioning pin 501 is inserted in the twist-nose hole 410 in a penetrating manner, and limiting and fixing the twist nose 401 in the twist-nose inserting groove 109;

thirdly, movably connecting a lower pressing beam 801 between the threaded upright column 112 and a bolt upright column on the top end face of the lower bevel edge bending positioning column 201 of the lower coil head; the lower bottom surface 8011 of the lower pressing beam 801 is an inclined surface, the inclined angle of the lower bottom surface 8011 is the same as the inclined angle of the upper top surface of the lower coil of the splayed coil with the twisted nose, one end of the lower pressing beam 801 is provided with a through hole, and the lower pressing beam 801 is movably sleeved on the threaded upright column 112 through the through hole; the other end of the lower pressing beam 801 is provided with another through hole, and the lower pressing beam 801 is movably sleeved on a bolt upright post on the top end face of the lower bevel edge bending positioning column 201 of the lower coil head through the other through hole;

fourthly, screwing a lower pressing nut 901 on the top end of the threaded upright post 112, and screwing another lower pressing nut on a bolt upright post on the top end face of the lower bevel edge bending positioning column 201 of the head part of the lower coil; the lower pressing beam 801 downwards presses the head of the lower coil of the splayed coil with the twisting nose by rotating the lower pressing nut 901 and the other lower pressing nut until the head of the lower coil of the splayed coil with the twisting nose is abutted against the top end surface of the lower coil head forming support table 103, so that the lower coil is bent downwards, and the height difference between the lower coil and the upper coil meets the design requirement;

and fifthly, taking the roller type bending wrench 701, sleeving a bolt upright column penetrating through hole 7011 arranged at the front end of the roller type bending wrench 701 on the bolt upright column on the top end face of the lower bevel edge bending positioning column 201 of the lower coil head, enabling a roller 7013 on the roller type bending wrench 701 to abut against the front side face of the lower coil head of the splayed coil with the twisting nose, rotating the roller type bending wrench 701 anticlockwise, enabling the roller 7013 to rotate along an arc line, enabling the lower coil head of the splayed coil with the twisting nose to be bent towards the right rear direction by taking the lower bevel edge bending positioning column 201 of the lower coil head as a supporting point, and bending and molding the lower bevel edge 406 of the lower coil head.

Sixthly, taking the roller type bending wrench 701 down from the bolt upright column on the top end face of the lower bevel edge bending positioning column 201 of the lower coil head, then sleeving the roller type bending wrench 701 on the other bolt upright column on the top end face of the upper bevel edge bending positioning column 202 of the upper coil head, and enabling a roller 7013 on the roller type bending wrench 701 to abut against the rear side face of the upper coil head of the splayed coil with the twisting nose;

and seventhly, rotating the roller type bending wrench 701 clockwise, rotating the roller 7013 along an arc line, bending the upper-layer coil head part of the splayed coil with the twisting nose to the right front direction by taking the bending positioning column 202 at the inclined edge of the upper-layer coil head part as a supporting point, and bending and molding the inclined edge 402 of the upper-layer coil head part.

Claims

1. A method for forming the tail part of a flat copper wire wave winding with a small span, a large cross section and a small end extending a twisting nose comprises a tooling base (1), a U-shaped coil with the twisting nose, a roller type bending wrench (701) and an L-shaped limiting plate (601), wherein a U-shaped notch is formed in a horizontal plate of the L-shaped limiting plate (601), a bolt upright post cross-connecting through hole (7011) is formed in the front end of a handle of the roller type bending wrench (701), a core column connecting screw hole with internal threads is formed in a wrench handle behind the bolt upright post cross-connecting through hole (7011), a core column (7012) with external threads is connected to the core column connecting screw hole with the internal threads, a locking nut with the core column (7012) with the external threads is arranged between the top end of the core column (7012) with the external threads and the top end face of the wrench handle, and a roller (7013) is movably sleeved at the lower end of the core column (7012) with the external threads; an upper coil head forming support table (101) and an upper coil tail forming support table (102) are respectively arranged on the rear side of the top end face of the tooling base (1), a lower coil head forming support table (103) and a lower coil tail forming support table (104) are respectively arranged on the front side of the top end face of the tooling base (1), the height of the top end face of the upper coil head forming support table (101) is the same as that of the top end face of the upper coil tail forming support table (102), the height of the top end face of the lower coil head forming support table (103) is the same as that of the top end face of the lower coil tail forming support table (104), and the height of the top end face of the upper coil head forming support table (101) is lower than that of the lower coil head forming support table (103); an upper coil straight line section forming supporting angle iron beam (105) is arranged between the top end surface of the upper coil head forming supporting platform (101) and the top end surface of the upper coil tail forming supporting platform (102), and a lower coil straight line section forming supporting angle iron beam (106) is arranged between the top end surface of the lower coil head forming supporting platform (103) and the top end surface of the lower coil tail forming supporting platform (104); a first positioning column connecting screw hole (119) for bending the tail part of the lower coil and a second positioning column connecting screw hole (120) for bending the tail part of the lower coil are respectively arranged on the top end surface of the lower coil tail part forming support platform (104); a third positioning column connecting screw hole (121) bent at the tail part of the upper coil and a fourth positioning column connecting screw hole (122) bent at the tail part of the upper coil are respectively arranged on the top end surface of the upper coil tail forming support table (102); a right front turning plate hinging seat (115) is arranged at the upper end of the right part of the lower coil straight-line section molding supporting angle iron beam (106), and a lower coil right turning plate type eccentric wheel clamping mechanism (302) is hinged on the right front turning plate hinging seat (115); the lower coil right turning plate type eccentric wheel clamping mechanism (302) is formed by combining a turning plate (311), an eccentric column (315) with steps, a coil linear edge pressing block (316) and a rotating handle (314); the turning plate (311) is hinged on a right front turning plate hinge seat (115) on a lower coil straight-line section molding support angle iron cross beam (106) through a pair of hinge tongues (3112) on the turning plate (311), and an eccentric column hanging hole (3111) is formed in the turning plate (311); a first step column (317) is eccentrically and fixedly arranged on the top end surface of the stepped eccentric column (315), a rotary handle connecting block (318) is fixedly connected to the top end surface of the first step column (317), and a threaded second step column (312) is fixedly connected to the top end surface of the rotary handle connecting block (318); a U-shaped groove (3162) is arranged on the inner side surface of the coil straight line side pressing block (316), and a long hole (3161) is arranged between the U-shaped groove (3162) and the upper top surface of the coil straight line side pressing block (316); a coil straight-line side pressing block (316) is movably sleeved on a first step column (317) on the coil straight-line side pressing block (316) from top to bottom through a long-strip hole (3161), so that an eccentric column (315) with steps is movably arranged in a U-shaped groove (3162), a turning plate (311) is connected to the first step column (317) exposed above the top end face of the coil straight-line side pressing block (316) in a penetrating manner through an eccentric column hanging hole (3111), a rotating handle (314) is connected to a rotating handle connecting block (318) penetrating out above the top end face of the turning plate (311), and a rotating handle locking nut (313) is screwed on a second step column (312) with threads above the rotating handle (314); the method is characterized by comprising the following steps:

firstly, turning a right turning plate type eccentric wheel clamping mechanism (302) of a lower coil to the outer side of a linear edge (407) of the lower coil, enabling an eccentric column (315) with a step to extrude the linear edge (407) of the lower coil backwards by rotating a rotating handle (314), and clamping the linear edge (407) of the lower coil between the eccentric column (315) with the step and a linear edge molding support angle iron beam (106) of the lower coil;

secondly, bending a first positioning column connecting screw hole (119) at the tail part of the lower coil, connecting the tail part of the lower coil, bending a first positioning column (203), and enabling the tail end of the lower coil to be abutted against the inner side of the bent first positioning column (203) at the tail part of the lower coil;

thirdly, a roller type bending wrench (701) is sleeved on a vertical upright post on the top end face of a first positioning post (203) bent at the tail part of the lower-layer coil through a bolt upright post cross-connecting through hole (7011), the roller type bending wrench (701) is rotated towards the right front direction, a roller (7013) is enabled to rotate and move along an arc line to extrude the tail part of the lower-layer coil, and a first bending edge (408) at the tail part of the lower-layer coil is formed by bending;

fourthly, bending a second positioning column at the tail part of the lower coil to connect with the screw hole (120), connecting a bent second positioning column (204) at the tail part of the lower coil, connecting an L-shaped limiting plate (601) on a vertically arranged threaded upright column at the top end of the bent second positioning column (204) at the tail part of the lower coil through a U-shaped notch, and enabling the tail part of the lower coil to be arranged between a vertical upright plate of the L-shaped limiting plate (601) and the bent second positioning column (204) at the tail part of the lower coil;

fifthly, sleeving a drum type bending wrench (701) on a vertically arranged threaded upright column at the top end of a second bending positioning column (204) at the tail part of the lower coil, and enabling a drum (7013) on the drum type bending wrench (701) to be abutted against the outer side face of the tail part of the lower coil;

seventhly, rotating a roller type bending wrench (701) anticlockwise, rotating a roller (7013) along an arc line, extruding and bending the tail of the lower-layer coil, bending a second positioning column (204) at the tail of the lower-layer coil to be a supporting point in the right rear direction, and bending to form a second bent edge (409) at the tail of the lower-layer coil;

eighthly, turning down the right turning plate type eccentric wheel clamping mechanism (304) of the upper coil to the outer side of the straight edge (403) of the upper coil; the structure of the upper-layer coil right-part plate-turning type eccentric wheel clamping mechanism (304) is completely the same as that of the lower-layer coil right-part plate-turning type eccentric wheel clamping mechanism (302); rotating the rotating handle to enable the eccentric column with the step to extrude the linear edge (403) of the upper coil forwards, and clamping the linear edge (403) of the upper coil between the eccentric column with the step and the linear edge molding support angle iron beam (105) of the upper coil;

ninth, bending a third positioning column connecting screw hole (121) at the tail part of the upper coil, connecting the tail part of the upper coil with a bent third positioning column (205), and enabling the tail end of the upper coil to be abutted against the inner side of the bent third positioning column (205) at the tail part of the upper coil;

tenth, a roller type bending wrench (701) is sleeved on a vertical upright post on the top end face of a third positioning column (205) bent at the tail part of the upper coil through a bolt upright post cross-connecting through hole (7011), the roller type bending wrench (701) is rotated towards the right front direction, a roller (7013) is enabled to rotate and move along an arc line to extrude the tail part of the upper coil, and a first bending edge (404) at the tail part of the upper coil is formed in a bending mode;

step eleven, connecting a fourth upper coil tail bending positioning column (206) on a fourth upper coil tail bending positioning column connecting screw hole (122), penetrating an L-shaped limiting plate (601) onto a vertically arranged threaded upright column at the top end of the fourth upper coil tail bending positioning column (206) through a U-shaped notch, and enabling the tail of the upper coil to be arranged between a vertical upright plate of the L-shaped limiting plate (601) and the fourth upper coil tail bending positioning column (206);

step ten, a drum type bending wrench (701) is sleeved on a vertically arranged threaded stand column at the top end of a fourth positioning column (206) for bending the tail of the upper coil, and a drum (7013) on the drum type bending wrench (701) is abutted to the outer side face of the tail of the upper coil;

and a thirteenth step of rotating the roller type bending wrench (701) clockwise, rotating the roller (7013) along an arc line, extruding and bending the tail of the upper coil, bending the fourth positioning column (206) bent at the tail of the upper coil to the right front direction as a supporting point, and bending to form a second bent edge (405) at the tail of the upper coil.