Abstract:
The invention provides a full-automatic network transformer winding machine, comprising a T1 ring winding device and a T2 ring winding device connected with said T1 ring winding device, wherein said T1 ring winding device includes an enameled wire pre-cutting mechanism, a stranding mechanism before T1 ring winding, a T1 ring winding mechanism and a tail wire-cutting mechanism which are connected with one another sequentially, and said T2 ring winding device includes a separating mechanism, a stranding mechanism before T2 ring winding and a T2 ring winding mechanism which are connected with one another sequentially. The full-automatic network transformer winding machine of the invention can completely replace manual winding to manufacture the network transformer, has high production efficiency and high product acceptability, and meanwhile provides great convenience to automatically realize shell mounting and end wrapping in subsequent processes.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    The present application claims the benefit of Chinese Patent Application No. 201510182353.2 filed on Apr. 16, 2015, the contents of which are hereby incorporated by reference. 
       TECHNICAL FIELD 
       [0002]    The invention relates to a network transformer winding machine, in particular to a full-automatic network transformer winding machine. 
       BACKGROUND 
       [0003]    Network is present everywhere in the world today, and the network transformer serves as the main electronic element of network equipment. However, production of the network transformer was still in a total manual status in the past, and the manual production process includes T1 ring manually winding; T1 ring manually tapping and stranding; T2 ring fixing on a special clamp and T2 ring manually winding. 
         [0004]    With advance in technology, winding of T1 ring can be automatically realized by a machine already. However, because it needs to strand after tapping of wire wound on T1 ring prior to winding of T2 ring, the process before winding of T2 ring is complex. At present manufacture of the network transformer often needs to complete winding of T1 ring by a machine first, and then perform manual winding of T2 ring. 
         [0005]    Both methods above have a higher process cost but a lower efficiency, and it is also difficult to ensure the product quality. 
       SUMMARY OF THE INVENTION 
       [0006]    In order to address disadvantages of the prior art, the invention provides a full-automatic network transformer winding machine, including a T1 ring winding device and a T2 ring winding device connected with said T1 ring winding device, wherein said T1 ring winding device includes an enameled wire pre-cutting mechanism, a stranding mechanism before T1 ring winding, a T1 ring winding mechanism and a tail wire-cutting mechanism which are connected with one another sequentially, and said T2 ring winding device includes a separating mechanism, a stranding mechanism before T2 ring winding and a T2 ring winding mechanism which are connected with one another sequentially. 
         [0007]    Further, said enameled wire pre-cutting mechanism includes a base, multiple pre-cutting devices arranged at different positions on said base, wherein said pre-cutting devices are used for pre-cutting a part of the enameled wire. 
         [0008]    Further, said tail wire-cutting mechanism includes a rack, a wire tail pressing assembly, a magnetic ring driving assembly and a magnetic ring clamping assembly mounted on the rack. 
         [0009]    Further, said separating mechanism includes a guide rail, a T1 ring feeding assembly mounted on the guide rail and a separating assembly, and said separating assembly is mounted on said T1 ring feeding assembly. 
         [0010]    Further, said stranding mechanism before T2 ring winding includes a wire head clamping assembly, a wire tail clamping assembly, a T1 ring clamping assembly and a stranding assembly, wherein said T1 ring clamping assembly is located between the wire tail clamping assembly and the wire head clamping assembly, and said stranding assembly is arranged above the wire head clamping assembly. 
         [0011]    Further, the winding machine further includes a feeding mechanism, wherein said feeding mechanism includes a T1 coil feeding rack, a transmission device, a T1 coil feeding and lifting device, a left wire clamping and forward-backward moving device, a right wire clamping and forward-backward moving device and a T2 ring feeding device, wherein said T2 ring feeding device includes a T2 ring drawing and lifting device and a T2 ring separation device. 
         [0012]    Further, said T2 ring winding mechanism includes a winding assembly, a crochet hook lifting assembly and an enameled wire movement track assembly connected with said winding assembly, a T2 ring clamping mechanism connected with said enameled wire movement track assembly and a T2 ring wire arranging assembly connected with said T2 ring clamping mechanism. 
         [0013]    Beneficial effects of the invention are that the full-automatic network transformer winding machine of the invention can completely replace manual winding to manufacture the network transformer, has high production efficiency and high product acceptability, and meanwhile provides great convenience to automatically realize shell mounting and end wrapping in subsequent processes. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]      FIG. 1  is an overall structural representation of a full-automatic network transformer winding machine of the invention; 
           [0015]      FIG. 2  is a structural representation of an enameled wire pre-cutting mechanism of the full-automatic network transformer winding machine in  FIG. 1 ; 
           [0016]      FIG. 3  is a structural representation of a pre-cutting device of the enameled wire pre-cutting mechanism in  FIG. 2 ; 
           [0017]      FIG. 4  is a structural representation of a stranding mechanism before T1 ring winding of the full-automatic network transformer winding machine in  FIG. 1 ; 
           [0018]      FIG. 5  is a structural representation of a T1 ring winding mechanism of the full-automatic network transformer winding machine in  FIG. 1 ; 
           [0019]      FIG. 6  is a structural representation of a tail wire-cutting mechanism of the full-automatic network transformer winding machine in  FIG. 1 ; 
           [0020]      FIG. 7  is a structural representation of a separating mechanism of the full-automatic network transformer winding machine in  FIG. 1 ; 
           [0021]      FIG. 8  is a structural representation of a stranding mechanism before T2 ring winding of the full-automatic network transformer winding machine in  FIG. 1 ; 
           [0022]      FIG. 9  is a structural representation of a T2 ring winding mechanism of the full-automatic network transformer winding machine in  FIG. 1 ; and 
       
    
    
       [0023]    in the drawings there are:  1 —enameled wire pre-cutting mechanism;  11 —base;  12 —pre-cutting device;  121 —cutter transmission mechanism;  122 —cutter;  123 —ceramic eyelet;  124 —height limiting block;  125 —cutter fixing block;  1211 —compressed spring;  2 —stranding mechanism before T1 ring winding;  201 —step motor;  202 —wire twisting rotator;  203 —polyurethane bearing;  204 —cylinder;  205 —the first acicular cylinder;  206 —the first wire pressing head;  207 —pressing ring;  208 —the second acicular cylinder;  209 —the second wire pressing head;  210 —wire supporting post;  211 —the first straight guide rail;  3 —T1 ring winding mechanism;  301 —front inclined reel seat;  302 —rear inclined reel seat;  303 —wire guide pin;  304 —wire guide pin mounting block;  305 —the second straight guide rail;  306 —wire guide pin locking block;  307 —the second cutter;  308 —wire outlet cutter seat;  309 —cutter protection block;  310 —cutter connecting rod;  311 —wire outlet opening;  312 —wire outlet opening rotating and pulling block;  313 —steel ball;  314 —spring;  315 —pressing plate;  316 —optical fiber mounting block;  317 —storage reel base;  318 —semicircle block of storage reel;  319 —winding spacer;  320 —semicircle cover of storage reel;  321 —front block of storage reel;  322 —rear block of storage reel;  323 —rear cover of storage reel;  4 —tail wire-cutting mechanism;  41 —wire tail pressing assembly;  42 —vertical pressing assembly;  43 —parallel pressing assembly;  44 —magnetic ring driving assembly;  45 —two-wire separating assembly;  46 —transmission mechanism assembly;  47 —scrap wire pickup assembly;  5 —separating mechanism;  51 —T1 ring feeding assembly;  52 —separating assembly;  6 —stranding mechanism before T2 ring winding;  61 —wire tail clamping assembly;  62 —wire head clamping assembly;  63 —stranding assembly;  64 —carding assembly;  65 —T1 ring clamping assembly;  7 —T2 ring winding mechanism;  71 —rotary winding assembly;  72 —rotary track assembly;  73 —T2 ring clamping device;  74 —T2 ring wire arranging assembly;  75 —crochet hook lifting assembly;  8 —T1 ring winding and transmission mechanism;  9 —wire arranging assembly; and  10 —reclaiming manipulator. 
       DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0024]    In order to make objectives, technical schemes and advantages of the invention clearer, the invention will be further illustrated in detail below in conjunction with drawings and examples. It should be understood that specific examples described here is only for the purpose of explaining the invention and not limiting the invention. 
         [0025]    Referring to  FIG. 1 , a full-automatic network transformer winding machine of the invention includes a T1 ring winding device with long and short tail wires and a T2 ring winding device connected with said T1 ring winding device with long and short tail wires, wherein said T1 ring winding device with long and short tail wires includes an enameled wire pre-cutting mechanism  1  for pre-cutting the enameled wire, a stranding mechanism before T1 ring winding  2  for stranding both ends of the enameled wire into stranded wire in opposite directions, a T1 ring winding mechanism  3  for T1 ring winding and a tail wire-cutting mechanism  4  for cutting the tail wire of T1 ring, which are connected with one another sequentially; said T2 ring winding device includes a separating mechanism  5  for separating two longest tail wires wound on T1 ring by T1 ring winding device  3  with long and short tail wires, a stranding mechanism before T2 ring winding  6  for stranding the two enameled wires separated by said separating mechanism  5  into stranded wires and a T2 ring winding mechanism  7  for winding the stranded enameled wire stranded by said stranding mechanism before T2 ring winding  6  onto T2 ring, which are connected with one another sequentially. 
         [0026]    Referring to  FIG. 2 , the enameled wire pre-cutting mechanism  1  of said full-automatic T1 ring winding machine with long and short tail wires includes a base  11 , multiple pre-cutting devices  12  arranged on said base  11  and a cylinder  13  below the base  11  connected with said pre-cutting device  12 , said pre-cutting devices  12  are used for pre-cutting a part of the enameled wire in its diameter direction, or changing cross-section shape and size of the enameled wire to realize the objective of pre-cutting, and the pre-cutting position of each enameled wire is different such that head and tail wires of the enameled wire wound on T1 ring are different in length. 
         [0027]    Referring to  FIG. 3 , said pre-cutting device  12  includes a cutter transmission mechanism  121  for connecting said cylinder  13 , and a cutter  122  connected with said cutter transmission mechanism  121 , said cutter transmission mechanism  121  has a step-like head for limiting stroke of the cutter to control pre-cutting amount. 
         [0028]    Said cutter transmission mechanism  121  includes a transmission rod, a spring arranged within said cutter transmission mechanism and a compressed spring  1211  arranged on said transmission rod, said spring is arranged below said transmission rod, said spring and compressed spring  1211  are used to buffer the pre-cutting force of the pre-cutting assembly, and said transmission rod is used to connect said cutter  122 . Among said multiple re-cutting devices  12 , the distance between the pre-cutting devices can be adjusted. 
         [0029]    Said pre-cutting device  12  further includes a cutter fixing block  125  with a through-hole in the middle to contain said cutter  122 , the upper part of the cutter fixing block  125  is “U” shape, and opposite portions on both sides of the “U” shape are mounted with a ceramic eyelet  123  penetrating the “U”-shaped wall, and a height limiting block  124  is mounted on the “U” shape of the cutter fixing block. 
         [0030]    Further, said height limiting block  124  is fixed on the “U” shape of the cutter fixing block  125  through hexagon socket head cap screws, and its position makes the cutter  122  cut off a part of the enameled wire in its diameter direction. 
         [0031]    The enameled wire goes through two ceramic eyelets  123  arranged opposite, the cylinder  13  drives the cutter transmission mechanism  121  upwards, the cutter transmission mechanism  121  drives the cutter  122  upwards, and the height limiting block  124  limits cutting depth of the cutter  122  such that a part of the enameled wire is cut off in its diameter direction. 
         [0032]    Referring to  FIG. 4 , a step motor  201  of said stranding mechanism before T1 ring winding  2  drives two wire twisting rotators  202  to rotate by a synchronizing wheel and a synchronizing belt, and the enameled wire is clamped in the middle of the polyurethane bearing  203 . Before stranding, the cylinder  204  is reset, and the polyurethane bearing on the wire twisting rotator  202  presses the enameled wire tightly under the action of spring force. The first acicular cylinder  205  is pressed down, the first wire pressing head  206  and the pressing ring  207  press the enameled wire tightly, the second acicular cylinder  208  acts, and the second wire pressing head  209  and the wire supporting post  210  press the enameled wire tightly. When the step motor  201  rotates, the wire between the polyurethane bearing and the wire pressing head  206  of the left rotating head is twisted into a stranded wire, and the wire between the polyurethane bearing and the wire pressing head  209  of the right rotating head is twisted into a reverse stranded wire. In order to prevent the enameled wire from being elongated when stranding, a first straight guide rail  211  and a spring are mounted on the bracket of the acicular cylinder, and with increase of number of turns of stranded wire, the enameled wire become short, and the tension force of the enameled wire overcomes the spring force to pull the first acicular cylinder  205  and the mounting block below to the right. After stranding, the first acicular cylinder  205  and the second acicular cylinder  208  are reset, and the first acicular cylinder  205  and the mounting block below are pulled back to the left under the action of spring force. After stranding, the enameled wire is forward fed to the right, the cylinder  204  props up the wire stranding head, and the polyurethane bearing on the wire twisting rotator  202  opens to release the enameled wire. 
         [0033]    Referring to  FIG. 5 , T1 ring winding mechanism  3  mainly includes a front inclined reel seat  301 , a rear inclined reel seat  302 , a wire guide pin  303 , a wire guide pin mounting block  304 , a second straight guide rail  305 , a wire guide pin locking block  306 , a cutter  307 , a wire outlet cutter seat  308 , a cutter protection block  309 , a cutter connecting rod  310 , a wire outlet opening  311 , a wire outlet opening rotating and pulling block  312 , a steel ball  313 , a spring  314 , a pressing plate  315 , an optical fiber mounting block  316 , a storage reel base  317 , a semicircle block of storage reel  318 , a winding spacer  319 , a semicircle cover of storage reel  320 , a front block of storage reel  321 , a rear block of storage reel  322 , a rear cover of storage reel  323  and a cover of storage reel. While the wire feeding assembly transports the stranded wire, the winding transmission assembly drives the front and rear inclined gears to rotate to complete wire storage; when winding, the winding transmission assembly drives the front and rear inclined gears to rotate, the enameled wire in the storage reel goes through the magnetic ring fixed on the magnetic ring feeding assembly, and is wound on T1 magnetic ring with the guide of the wire guide pin  303 , the winding spacer  319  and the steel ball  313 , and with every turn wound, the wire arranging assembly drives T1 magnetic ring to rotate a given wire arranging angle. After winding a given number of turns, the wire outlet opening  311  opens, the wire head goes out from the wire outlet opening, and after the reclaiming manipulator takes the wound product away, the wire outlet opening is reset and turns to wind the next product. 
         [0034]    Referring to  FIG. 6 , the tail wire-cutting mechanism  4  of said full-automatic T1 ring winding machine with long and short tail wires includes a rack, a wire tail pressing assembly  41 , a magnetic ring driving assembly  44  and a magnetic ring clamping assembly  45  mounted on the rack. The tail wire-cutting mechanism  4  also includes a parallel pressing assembly  43  connected with said wire tail pressing assembly  41 , and a transmission mechanism assembly  46  respectively connected with said magnetic ring driving assembly  44  and said magnetic ring clamping assembly  45 . 
         [0035]    The tail wire-cutting mechanism  4  of said winding machine also includes a vertical pressing assembly  42 , and said vertical pressing assembly  42  is arranged between said wire tail pressing assembly  41  and said magnetic ring clamping assembly  45 , and used to ensure that all products clamped by the wire separating manipulator in follow-up processes are at the same position on the clamping jaw of said wire separating manipulator. 
         [0036]    Further, the tail wire-cutting mechanism  4  of said winding machine also includes a scrap wire pickup assembly  47 , and said scrap wire pickup assembly  47  is arranged below said vertical pressing assembly  42 , and used to take excessive stranded wire heads out of the tail wire-cutting mechanism  4  of the winding machine. 
         [0037]    Referring to  FIG. 7 , said separating mechanism  5  includes a guide rail and a T1 ring feeding assembly  51  mounted on said guide rail and a separating assembly  52 , said separating assembly  52  is mounted on said T1 ring feeding assembly  51 , wherein said separating assembly  52  is used for separating two longest tail wires from the long and short tail wires of T1 ring with wire wound, and said T1 ring feeding assembly  51  is used for feeding T1 with wire wound and two longest tail wires separated to the next service position. 
         [0038]    Wherein said T1 ring feeding assembly  51  includes a bottom plate, a servo motor mounted on one end of said bottom plate, a slider cylinder mounted on the other end of said bottom plate, a first synchronizing wheel mounted on said servo motor, a second synchronizing wheel connected with said first synchronizing wheel through a synchronizing belt, a drag chain mounted on said synchronizing belt, a straight guide rail for mounting said slider cylinder, a photoelectric element mounted on one end of said straight guide rail and a sensing block mounted on said synchronizing belt, wherein said synchronizing wheels are mounted on the other end of the bottom plate in the direction opposite to the servo motor; said separating assembly includes a first parallel clamping cylinder and a second parallel clamping cylinder which are arranged in parallel, and further includes a rotating cylinder connected with said second parallel clamping cylinder, a wire clamping rod connected with one end of said rotating cylinder, a slider cylinder connected with said rotating cylinder, and a wire clamping block connected with one end of said first parallel clamping cylinder, and said first parallel clamping cylinder and said wire clamping block are arranged on one side of said slider cylinder. 
         [0039]    The wire separating action of the separating mechanism  51  includes: 
         [0040]    the slider cylinder of the T1 ring feeding assembly  51  goes forwards to drive the first parallel clamping cylinder, the second parallel clamping cylinder, the clamping block and the wire clamping rod of the separating assembly  52  to move forwards; 
         [0041]    the first parallel clamping cylinder and the second parallel clamping cylinder of the separating assembly  52  move, the clamping block clamps two longest enameled wires, and the wire clamping rod clamps the wound T1 magnetic ring coil; 
         [0042]    The slider cylinder of the T1 ring feeding assembly  1  goes backwards to drive the first parallel clamping cylinder, the second parallel clamping cylinder, the clamping block and the wire clamping rod of the separating assembly  52  to move backwards; 
         [0043]    The slider cylinder of the separating assembly  52  moves rightwards, and the rotating cylinder rotates clockwise to separate the two longest wires from other six wires; 
         [0044]    The servo motor of the T1 ring feeding assembly  51  rotates to drive the whole separating assembly  52  to move rightwards; 
         [0045]    The slider cylinder of the T1 ring feeding assembly  51  moves forwards to drive the first parallel clamping cylinder, the second parallel clamping cylinder, the clamping block and the wire clamping rod of the separating assembly  52  to move backwards again and send them into the follow-up process, such as stranding process; 
         [0046]    The first parallel clamping cylinder and the second parallel clamping cylinder of the separating assembly are reset and loosened; 
         [0047]    the slider cylinder of the T1 ring feeding assembly  51  goes backwards to drive the first parallel clamping cylinder, the second parallel clamping cylinder, the clamping block and the wire clamping rod of the separating assembly  52  to move backwards; 
         [0048]    The rotating cylinder of the separating assembly  52  rotates anticlockwise, and the slider cylinder moves leftwards; and 
         [0049]    The servo motor of the T1 ring feeding assembly  51  rotates to drive the whole separating assembly  52  to move leftwards and back to the null position. 
         [0050]    Referring to  FIG. 8 , said stranding mechanism before T2 ring winding  6  includes a wire tail clamping assembly  61  for clamping the wire tail of wound T1 ring, a wire head clamping assembly  62  for clamping two wire heads to be wound on T2 ring, a T1 ring clamping assembly  65  for clamping T1 ring, a stranding assembly  63  for stranding the wire heads and a carding assembly  64  for keeping the wire heads and the wire tails of wound T1 ring straight, wherein said wire tail clamping assembly  61  is connected with the wire head clamping assembly  62 , said carding assembly  64  and said stranding assembly  63  are arranged above said wire tail clamping assembly  61  and said wire head clamping assembly  62 . 
         [0051]    The stranding mechanism  2  works in the following steps: 
         [0052]    The wire tail clamping assembly  61  and the wire head clamping assembly  62  rise simultaneously; 
         [0053]    The wire head clamping assembly  61  clamps the wire heads, and the wire tail clamping assembly  62  clamps the wire tails; 
         [0054]    The carding assembly  64  falls to clamp the wire tails together with the wire tail clamping assembly  61 ; 
         [0055]    The wire head clamping assembly  62  moves leftwards and the wound T1 ring moves to a certain position; 
         [0056]    The stranding assembly  63  loosens and then falls, and clamps the wire heads after it is in place; 
         [0057]    The wire tail clamping assembly  61  clamps the wire tails and then moves rightwards, the hair brush of the carding assembly  64  and the hair brush of the wire tail clamping assembly  61  pull the wire tails straight; 
         [0058]    The wire head clamping assembly  62  loosens and the falls; 
         [0059]    The stranding assembly  63  clamps the wire heads and rotates; 
         [0060]    The reclaiming manipulator  10  moves to a reclaiming position and clamps the wire heads and the wire tails; and 
         [0061]    The stranding assembly  63  loosens and then rises, at the same time the wire tail clamping assembly  61  loosens the wire tails, and then falls, and the carding assembly  64  rises. 
         [0062]    Referring to  FIG. 9 , said T2 ring winding mechanism  7  includes a rotary winding device  71 , a crochet hook lifting assembly  75  and an enameled wire rotary track assembly  72  connected with said winding mechanism  71 , a T2 ring clamping device  73  connected with said enameled wire rotary track assembly  72 , and a T2 ring wire arranging assembly  74  connected with said T2 ring clamping device  73 , said rotary winding device  71  is used to rapidly wind the wire head wound on T2 ring upwards to above T2 ring, said crochet hook lifting assembly  75  is used to draw the wire at a high speed, said enameled wire rotary track assembly  72  is used to limit movement track of the enameled wire, said T2 ring clamping assembly  73  is used to clamp T2 ring, and said T2 ring wire arranging mechanism  74  is used to allow T2 ring to perform circular motion. 
         [0063]    The working process of T2 ring winding mechanism  7  works in the following steps: 
         [0064]    the feeding device  4  of the winding machine with T1 and T2 rings puts T2 ring into T2 ring clamping device  73 , and T2 ring is clamped by a clamping cylinder; 
         [0065]    the feeding device  4  of the winding machine with T1 and T2 rings puts the wire package of T1 ring on T2 ring, and feeds the left wire head into a crochet hook groove; 
         [0066]    the cylinder of the enameled wire rotary track assembly  72  retracts, and the wire reel moves toward the rotary winding device  71  and stops after reaching the winding position; 
         [0067]    when the crochet hook falls, allows the wire head to go through T2 ring, and continues to fall, the crochet hook carries the wire head to pass through a felt supporting plate and a felt fixing block of the enameled wire rotary track assembly  72 , and the wire head is pulled tight through wool on the two parts; 
         [0068]    T2 ring arranges the wire, and the motor of the wire arranging device  74  drives T2 ring to rotate at a given angle; 
         [0069]    the rotating head of the rotary winding device  71  winds the wire head wound on T2 ring upwards to above T2 ring, and the wire head is sent into the crochet hook groove under the common action of a spring piece, a tension block of the wire reel, a spring and an elastic force regulating ring; 
         [0070]    crochet hook falling, wire arranging of T2 ring and turnover action of the rotating head are repeated until a given number of turns is achieved and winding is stopped; and 
         [0071]    The cylinder of the enameled wire rotary track assembly  72  extends out, the wire reel leaves the rotary winding device, and the wound product is taken out. 
         [0072]    The enameled wire pre-cutting mechanism  1  of T1 ring winding device with long and short tail wires cuts a part (usually 30%-70%) of the enameled wire in its diameter direction at each given distance (a length of the enameled wire required for winding a network transformer product), does not cut the whole enameled wire, and the cutting position of each enameled wire is different to obtain tail wires of different length; 
         [0073]    the stranding mechanism before T1 ring winding  2  of T1 ring winding device with long and short tail wires twists both ends of the enameled wire into a stranded wire in opposite directions through T1 ring winding device before T1 ring winding; 
         [0074]    T1 ring winding mechanism  3  of T1 ring stranding device with long and short tail wires winds one end of the enameled wire of which both ends are twisted onto T1 ring; 
         [0075]    One end of the tail wire-cutting mechanism  4  of T1 ring stranding device with long and short tail wires presses the wire head and wire tail of said wound T1 ring, the other end of the tail wire-cutting mechanism  4  clamps the wound T1 ring, and then applies a tensile force outwards, and when the tensile force is greater than the designed tensile cutting force, the stranded wire head is separated from the wound T1 ring at a pre-cutting position; 
         [0076]    The separating mechanism  5  of T2 ring winding device separates two longest enameled wires which need to be wound onto T2 ring according to the difference of lengths of tail wires; 
         [0077]    The stranding mechanism before T2 ring winding  6  of T2 ring winding device twists two separated wires into stranded wires before winding T2 ring; and 
         [0078]    Finally, T2 ring winding mechanism  7  of T2 ring winding device winds the stranded wires onto T2 ring. 
         [0079]    Full-automatic winding of the network transformer can be realized through these steps of enameled wire feeding, pre-cutting, stranding before T1 ring winding, T1 ring winding, cutting excessive stranded wires, tapping and stranding before T1 ring winding, and finally winding the stranded wire onto T2 ring through T2 ring winding mechanism. 
         [0080]    Wherein, a T1 ring pushing assembly is also arranged between the stranding mechanism before T1 ring winding and the winding assembly of said T1 ring winding device with long and short tail wires of the full-automatic network transformer winding machine, and used to pick and place T1 ring. 
         [0081]    Wherein, a T1 ring winding and transmission mechanism  8  is also arranged between the stranding mechanism before T1 ring winding and the winding assembly of said T1 ring winding device with long and short tail wires of the full-automatic network transformer winding machine, and used to store some enameled wires which are twisted into a stranded wire and supply the wire to the winding assembly. 
         [0082]    Wherein, a wire arranging assembly  9  is also arranged between the winding assembly and the tail wire-cutting mechanism  4  of said T1 ring winding device with long and short tail wires of the full-automatic network transformer winding machine, and used to complete wire arranging action of T1 ring winding to make wire arrangement on T1 ring more uniform. 
         [0083]    Wherein, a wound T1 ring pushing assembly is also arranged between the winding assembly and the tail wire-cutting mechanism  4  of said T1 ring winding device with long and short tail wires of the full-automatic network transformer winding machine, and used to push the wound T1 ring to the separating mechanism  5 , and push the long and short tail wires of the pushed wound T1 ring to one side of T1 ring and unwind and extend them. 
         [0084]    Wherein, a reclaiming manipulator  10  is also arranged between the winding assembly and the tail wire-cutting mechanism  4  of said T1 ring winding device with long and short tail wires of the full-automatic network transformer winding machine, and used to grasp the wound T1 ring and send it to the tail wire-cutting mechanism. 
         [0085]    Wherein, said T1 ring winding device with long and short tail wires of the full-automatic network transformer winding machine further includes an automatic NG, which is used to put unsuccessfully wound products into NG bin when said T1 ring winding assembly with long and short tail wires winds unsuccessfully. 
         [0086]    Wherein, density of the stranded enameled wires stranded on T1 ring by T2 stranding mechanism of said T1 ring winding device with long and short tail wires depends on operation instruction. 
         [0087]    Wherein, a feeding mechanism is also arranged between the stranding mechanism before T2 ring winding  6  and T2 ring winding mechanism  7  of said T2 ring winding device, and used to place T2 ring and the wound T1 ring onto T2 ring winding device. 
         [0088]    It should be understood that the forgoing is only preferred examples of the invention, and could not limit patent scope of the invention for this reason, and all changes of equivalent structures or equivalent flows made by utilizing the specification and drawings of the invention, and applied to other related technical fields directly or indirectly, are included within the protection scope of the invention.