Transformer automatic winding machine capable of improving wire breakage alarm stability

Abstract

The utility model relates to an automatic transformer winding machine capable of improving the stability of wire breakage alarm. The automatic transformer winding machine comprises an automatic winding machine body, an auxiliary device, a light sensation front-back adjusting device and a light sensation up-down adjusting device. The automatic winding machine and the auxiliary device complete the automatic winding action; although a tensioner in the auxiliary device is provided with a mechanical pressure switch for timely detecting the wire breaking condition in the winding process, the detection is often out of order; the newly added front and back row optical fiber sensors, the light sensation front and back adjusting device and the light sensation up and down adjusting device are effective supplementation for tensioner detection failure, are beneficial to improving the accuracy rate of wire breakage alarm, avoid actual wire breakage alarm omission so as to prevent quality accidents of winding omission, maintain the high efficiency of an automatic production line, reduce the labor cost and improve the production efficiency. And meanwhile, high quality is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical fields of automatic winding machine that improves the stability of broken line alarm, especially to a transformer automatic winding machine that improves the stability of broken line alarm. BACKGROUND

[0002] Various types of automatic winding machine of transformer, whether high frequency transformer or low frequency transformer, generally adopts framework, each winding group of enameled wire is wound in the wire slot of framework, and the wire is hung in different foot positions, especially for the transformer with multiple winding groups, the winding sequence has strict regulations, each winding group is completed by an automatic winding machine, and the automatic winding machine has multiple shaft synchronous winding, and typical 4 shaft, 8 shaft, 10 shaft, 12 shaft and 16 shaft automatic winding machines, the multiple shaft automatic winding machine improves production efficiency compared with the single shaft winding machine, and multiple full-automatic winding machines are arranged in a row, the first winding group is wound first, the N1 adhesive tape is wound, the second winding group is wound, the N2 adhesive tape is wound, the third winding group is wound, the N3 adhesive tape is wound, and the like until the last winding group is wound, and the outermost adhesive tape is wound, and a multiple shaft sliding table is arranged between each adjacent automatic winding machine, and the semi-finished wire package is sequentially transferred between two adjacent automatic winding machines; taking the 8 shaft automatic winding machine as an example, the prior art automatic winding machine has eight winding clamps at the front end, and the wire rack at the rear end has eight winding tensioners, each tensioner is provided with a mechanical pressure switch, when winding normally, the pressure rod of each tensioner is pressed forward, the pressure rod does not press the pressure switch backward, the normally closed pressure switch is turned on, all the pressure switches are connected in series and then connected into a control circuit to maintain normal winding; however, when the wire of a winding clamp is broken, the pressure rod of the corresponding tensioner is not pressed forward, the pressure rod is in a released state, the pressure rod is tilted upward, the pressure switch of the tensioner is pressed downward by the pressure rod, and the pressure switch is turned off, since all the pressure switches of the tensioners are connected in series, as long as one or more pressure switches are not turned on and are turned off, the whole branch circuit is turned off, and the automatic winding machine automatically alarms almost at the same time to remind the operator to handle the broken wire problem: the worker pulls the wire forward and clamps it in the wire clamping device, so that the pressure rod of the tensioner is pressed forward, the pressure rod releases the spring of the pressure switch, and the pressure switch of the tensioner is turned on again; after the problem is handled, the alarm is eliminated, and the automatic winding machine resumes normal work by pressing the start key of the automatic winding machine, which is the working principle of the prior art; however, since the pressure switch of the tensioner is mechanical, the spring of the pressure switch is pressed and released more than 100,000 times a day, 3.6 million times a year, and 7.2 million times a year if the worker works night shift, the spring is fatigued after long-term use, and the contact of the pressure switch is poor, which causes the mechanical pressure switch to malfunction after two or three months, if the pressure switch malfunctions and the wire is actually broken, the pressure rod of the tensioner is tilted upward, but the pressure switch is still turned on, which does not meet the original design intention, and the automatic winding machine loses the automatic alarm function, when the tensioner corresponding to the winding clamp loses the alarm function, the winding clamp actually breaks when winding, and the automatic winding machine runs down according to the steps, but the wire is broken, and the wire will definitely be missed under the condition that the wire does not follow, and the missed winding of the semi-finished wire package directly flows into the next process without alarm.And more than one winding transformer leakage or winding to the client is a very serious quality accident, and more than one automatic winding machine together, each automatic winding machine multi-axis synchronous winding of a winding, in turn relay down, always often have one of the automatic winding machine of one axis, due to the broken line alarm failure and lead to leakage of a winding, this rise and fall, can't help but due to broken line alarm failure in the industry often occur in the automatic production line, and transformer leakage winding is a fatal quality problem.

[0003] Therefore, in view of the problems in the prior art, there is an urgent need to provide a transformer automatic winding machine for improving the stability of the broken line alarm. Practical new type content

[0004] The utility model discloses to avoid the prior art's insufficient and provide a kind of transformer automatic winding machine for improving the stability of the broken line alarm.

[0005] The utility model discloses the purpose is realized by the following technical scheme:

[0006] Provide a kind of transformer automatic winding machine for improving the stability of the broken line alarm, including: automatic winding machine, auxiliary device, light sense front and rear adjusting device and light sense up and down adjusting device.

[0007] Wherein, automatic winding machine 101 includes: winding fixture 105, tray 107, touch screen 106, pneumatic shear 102, wire clamping device 104, guide needle turnover cylinder 103;Automatic winding machine is located at the front end, and each component is cooperated, and automatic winding operation is completed;Wherein, auxiliary device is located at the rear end, including: pay-off stand, spool, wire cover, tensioner.

[0008] Wherein, pay-off stand is located at the rear side of automatic winding machine, and there are two platforms on it, and spool can be placed on the upper and lower platforms, and spool dot matrix is placed on the platform, and each spool is wrapped with wire cover, to prevent wire from being thrown around when winding, and to prevent wire from being knotted, and each wire cover has a porcelain eye on top, and enameled wire is pulled out from it upwards, and tensioner is located above wire cover, and each wire cover corresponds to a tensioner.

[0009] The tensioner comprises a tensioner pressure rod, a pressure rod top end pulley, a mechanical pressure switch, a magnetic resistance wheel, a double piece wool felt pressing device, a support locking knob, a tensioner support, a bottom porcelain eye, a rear pulley, a front pulley, a pressure rod rear end rectangular connecting handle, a shading film mounting hole, a film side fixing screw, a shading film, a switch spring, a switch roller, a switch wiring common terminal, a switch moving contact, a switch static contact, a wool felt tightness adjusting push rod, a tension adjusting knob and a counter tension adjusting knob. The tensioner is used for adjusting the winding tension, and from top to bottom on the right side of the tensioner, there are the bottom porcelain eye, the double piece wool felt pressing device at the rear, the rear pulley in the middle, the front pulley in front, the magnetic resistance wheel, the mechanical pressure switch fixedly installed above the front of the magnetic resistance wheel, the spring and the roller below the mechanical pressure switch, the pressure rod rear end rectangular connecting handle, and the pressure rod. The pressure rod rotates around the rotating shaft below the mechanical pressure switch, the rotating shaft extends into the tensioner, and the spring inside the tensioner restricts the rotation of the rotating shaft. On the left side of the tensioner, there is the tension adjusting knob coaxial with the magnetic resistance wheel on the right side of the tensioner. The tension adjusting knob is below the wool felt tightness adjusting push rod coaxial with the double piece wool felt pressing device on the right side of the tensioner. The wool felt tightness adjusting push rod is used for pushing the double piece wool felt pressing device to the right when the wire is replaced, so that the two pieces of wool felt are loosened, the wire is passed through the middle of the two pieces of wool felt, and then the push rod is loosened to clamp the wire.

[0010] The pressure rod top end pulley is below the front end of the pressure rod.

[0011] The wire passes through the tensioner path: the wire is passed out from the porcelain eye at the top of the wire cover, passes through the bottom porcelain eye of the tensioner, passes through the double piece wool felt pressing device, winds around the magnetic resistance wheel once, passes through the rear pulley and the front pulley, passes through the pressure rod top end pulley, reaches the front machine top porcelain eye of the automatic winding machine, passes through the needle guide, and is finally clamped in the wire clamping device.

[0012] The light sensing front and rear adjusting device comprises a rear row left side front and rear light sensing adjusting mechanism, a rear row right side front and rear light sensing adjusting mechanism, a front row left side front and rear light sensing adjusting mechanism, a front row right side front and rear light sensing adjusting mechanism, a front and rear fine adjustment nut, a front and rear fine adjustment sliding groove, a front and rear fine adjustment screw rod, a front and rear fine adjustment screw hole and a front and rear fine adjustment sliding block.

[0013] Preferably, the rear left front and rear light sensing adjustment mechanism and the rear right front and rear light sensing adjustment mechanism are adjusted so that the pair of optical fiber sensors of the rear row are directly opposite, and when any wire monitored by the tensioner of the rear row is broken, the tensioning rod is tilted upward, at this time, the light blocking film of the tensioning rod blocks the optical fiber sensor of the rear row, the optical fiber sensor sends a high level, and the PLC receives the high level signal and automatically alarms.

[0014] Preferably, the front left front and rear light sensing adjustment mechanism and the front right front and rear light sensing adjustment mechanism are adjusted so that the pair of optical fiber sensors of the front row are directly opposite, and when any wire monitored by the tensioner of the front row is broken, the tensioning rod is tilted upward, at this time, the light blocking film of the tensioning rod blocks the optical fiber sensor of the front row, the optical fiber sensor sends a high level, and the PLC receives the high level signal and automatically alarms.

[0015] The light sensing up and down adjustment device comprises a rear left up and down light sensing adjustment mechanism, a rear right up and down light sensing adjustment mechanism, a front left up and down light sensing adjustment mechanism, a front right up and down light sensing adjustment mechanism, an up and down fine adjustment nut, an up and down fine adjustment sliding hole and an up and down fine adjustment sliding rod.

[0016] Preferably, when the up and down positions of the optical fiber sensors of the front row are not correct, the front left up and down light sensing adjustment mechanism and the front right up and down light sensing adjustment mechanism are adjusted so that the pair of optical fiber sensors of the front row are directly opposite.

[0017] Preferably, when the up and down positions of the optical fiber sensors of the rear row are not correct, the rear left up and down light sensing adjustment mechanism and the rear right up and down light sensing adjustment mechanism are adjusted so that the pair of optical fiber sensors of the rear row are directly opposite.

[0018] The utility model discloses the beneficial effect of having:

[0019] (1) the pressure rod top of all tensioner of the application extends forward, increases the rotating radius of pressure rod around the rotation axis, is favorable to the optical fiber sensor of broken line signal capture.

[0020] (2) the light blocking film mounting hole is located in the top extension section of the pressure rod, and the light blocking film is vertically installed in the light blocking film mounting hole, and the two-point one-wire of the signal sending end and the wiring signal end of the optical fiber sensor is vertically blocked by the light blocking film. When the pressure rod is tilted upward quickly due to the sudden release of pressure of the pressure rod when the wire is suddenly broken, the cross-sectional area of the pressure rod is too small, and the optical fiber sensor is difficult to capture the pressure rod. The light blocking film has a larger cross-sectional area in the vertical direction than the pressure rod, which is conducive to the accurate and timely capture of the broken line signal by the optical fiber sensor.

[0021] (3) When the wire of individual tensioner is broken, the pressure rod is upturned, the optical fiber sensor has no high level, the fixing screw of the light film side can be loosened, the light film is adjusted upward, and then the screw is locked; on the contrary, if the wire is normally wound, the pressure rod of individual tensioner is not broken, the optical fiber sensor always has high level, the fixing screw of the light film side can be loosened, the light film is adjusted downward, and then the screw is locked; the structure that the light film is inserted into the light film mounting hole and locked by the light film side fixing screw is beneficial to timely adjusting the position of the light film and beneficial to the optical fiber sensor accurately sensing the effect of the design intention.

[0022] (4) When the wire is normally wound, the wire on the framework can be ensured to be pressed upward by the automatic winding machine, and the pressure rod is in a low state; during the transition period between the last working period and the next working period, the wire end is always clamped and pulled by the clamping device of the automatic winding machine, which also ensures that the pressure rod is pressed upward and in a low state; only in the case of broken wire, the pressure rod is upturned, the positions of the front and rear rows of optical fiber sensors can be adjusted to the best through the light sensing front and rear adjusting device and the light sensing up and down adjusting device, so that the optical fiber sensor is in low level during normal winding, and any one or more wires are broken, the optical fiber sensor immediately sends high level, and timely inputs the broken wire information to the PLC.

[0023] (5) Each tensioner is provided with a mechanical pressure switch capable of sensing broken wire, sometimes the spring of the pressure switch is fatigued due to long use time, and the pressure switch loses the ability of timely broken wire sensing, the added optical fiber sensor is a supplement to the abnormal sensing failure of the individual mechanical pressure switch, and when other mechanical pressure switches do not fail, the double insurance effect is achieved, and the sensing preparation rate reaches 100%. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model is further described by using the drawings, but the contents in the drawings do not constitute any limitation to the utility model.

[0025] Figure 1 It is a front right three-dimensional structure diagram of the transformer automatic winding machine of the utility model.

[0026] Figure 2 It is a top view structural schematic diagram of the transformer automatic winding machine of the utility model.

[0027] Figure 3 It is a right rear view three-dimensional structural schematic diagram of the tensioner of the transformer automatic winding machine of the utility model.

[0028] Figure 4 It is a left rear view three-dimensional structural schematic diagram of the tensioner of the transformer automatic winding machine of the utility model.

[0029] Figure 5 It is a structure schematic view of the light sense front and back adjusting device of the transformer automatic winding machine of the application.

[0030] Figure 6 It is a structure schematic view of the light sense up and down adjusting device of the transformer automatic winding machine of the application.

[0031] In Figures 1 to 6 including:

[0032] 101 - automatic winding machine, 102 - pneumatic cutter, 103 - guide needle turning cylinder, 104 - wire clamping device, 105 - winding clamp, 106 - touch screen, 1061 - start key, 1062 - stop key, 1063 - reset key, 1064 - emergency stop key, 107 - tray, 108 - guide needle fixed square stick, 109 - guide needle, 110 - feeding and discharging frame driving device, 111 - feeding and discharging frame, 201 - wire cover, 202 - wire cover porcelain eye, 203 - wire rack, 204 - wire, 205 - machine top porcelain eye, 206 - spool, 301 - tensioner, 3011 - tensioner pressure rod, 3012 - pressure rod top pulley, 3013 - mechanical pressure switch, 3014 - magnetic resistance wheel, 3015 - double piece wool felt pressing device, 3016 - support locking knob, 3017 - tensioner support, 3018 - bottom porcelain eye, 3019 - rear pulley, 3020 - front pulley, 3021 - pressure rod rear end rectangular connecting handle, 3022 - light shielding film mounting hole, 3023 - film side fixing screw, 3024 - light shielding film, 3025 - switch spring, 3026 - switch roller, 3027 - switch wiring common end, 3028 - switch moving contact, 3029 - switch moving break contact, 3030 - wool felt tightness adjusting push rod, 3031 - tension adjusting knob, 3032 - counter tension adjusting knob, 401 - rear row optical fiber left support, 402 - rear row optical fiber right support, 403 - front row optical fiber left support, 404 - front row optical fiber right support, 405 - rear row optical fiber sensor sending end, 406 - rear row optical fiber sensor receiving end, 407 - front row optical fiber sensor sending end, 408 - front row optical fiber sensor receiving end, 501 - rear row left side front and rear light sensing adjusting mechanism, 502 - rear row right side front and rear light sensing adjusting mechanism, 503 - front row left side front and rear light sensing adjusting mechanism, 504 - front row right side front and rear light sensing adjusting mechanism, 505 - front and rear fine adjustment nut, 506 - front and rear fine adjustment sliding groove, 507 - front and rear fine adjustment screw rod, 508 - front and rear fine adjustment screw hole, 509 - front and rear fine adjustment sliding block, 601 - rear row left side up and down light sensing adjusting mechanism, 602 - rear row right side up and down light sensing adjusting mechanism, 603 - front row left side up and down light sensing adjusting mechanism, 604 - front row right side up and down light sensing adjusting mechanism, 605 - up and down fine adjustment screw, 606 - up and down fine adjustment sliding hole, 607 - up and down fine adjustment sliding rod. DETAILED DESCRIPTION

[0033] The utility model is further illustrated in connection with the following examples. Example 1

[0034] Referring to Figures 1 to 6 The transformer automatic winding machine for improving the stability of broken wire alarm comprises an automatic winding machine, an auxiliary device, a light sensing front and rear adjusting device, and a light sensing up and down adjusting device.

[0035] The automatic winding machine 101 comprises a winding clamp 105, a tray 107, a touch screen 106, a pneumatic cutter 102, a wire clamping device 104, and a guide needle overturning cylinder 103. The components at the front end of the automatic winding machine 101 cooperate with each other to complete the automatic winding operation. Figure 1 And Figure 2 .

[0036] The auxiliary device is located at the rear end and comprises a pay-off stand 203, a bobbin 206, a wire cover 201, and a tensioner 301.

[0037] The pay-off stand 203 is located at the rear side of the automatic winding machine, and has two platforms on the upper and lower sides. The upper and lower platforms can both accommodate the bobbin 206. The bobbins 206 are arranged in an array on the platforms, and each bobbin 206 is covered by the wire cover 203 to prevent the wire from being flung around and knotted during winding. Each wire cover 206 has a wire cover porcelain eye 202 at the top, through which the enameled wire passes upwards. The tensioner 301 is located above the wire cover 203, and each wire cover 203 corresponds to a tensioner 301. Figure 1 And Figure 2 .

[0038] The tensioner 301 comprises a tensioner pressure rod 3011, a pressure rod top pulley 3012, a mechanical pressure switch 3013, a magnetic resistance wheel 3014, a double-piece wool felt pressing device 3015, a support locking knob 3016, a tensioner support 3017, a bottom porcelain eye 3018, a rear pulley 3019, a front pulley 3020, a pressure rod rear end rectangular connecting handle 3021, a light-shielding film mounting hole 3022, a film side fixing screw 3023, a light-shielding film 3024, a switch spring 3025, a switch roller 3026, a switch wiring common end 3027, a switch moving contact 3028, a switch moving break contact 3029, a wool felt tightness adjusting push rod 3030, a tension adjusting knob 3031, and a counter-tension adjusting knob 3032. Figure 3 And Figure 4 .

[0039] The tensioner 301 plays a role in adjusting the winding tension. From top to bottom on the right side of the tensioner 301, there is a bottom porcelain eye 3018, a rear double-felt pressing device 3015, a middle rear pulley 3019, a front pulley 3020, a magnetic resistance wheel 3014, a mechanical pressure switch 3013 fixedly installed above the magnetic resistance wheel 3014, a switch spring 3025 and a switch roller 3026 below the mechanical pressure switch 3013, a rectangular connecting handle 3021 opposite to the rear end of the pressure rod, and a pressure rod 3011 in front of the rectangular connecting handle 3021. The pressure rod rotates around the rotating shaft below the mechanical pressure switch 3013, and the rotating shaft extends into the tensioner. Inside the tensioner, there is a spring to restrict the rotation of the rotating shaft. On the front side of the tensioner 301, there is an anti-tension adjusting knob 3032. When the anti-tension adjusting knob 3032 is rotated counterclockwise, the force of the spring restricting the rotation of the rotating shaft increases, and thus the anti-tension is increased. Conversely, when the anti-tension adjusting knob 3032 is rotated counterclockwise, the anti-tension is decreased. On the left side of the tensioner 301, there is a tension adjusting knob 3031 coaxial with the magnetic resistance wheel 3014 on the left side of the tensioner. When the tension adjusting knob 3032 is adjusted clockwise, the tension of the wire is increased, and the wire is difficult to pull out. Conversely, when the tension adjusting knob 3032 is adjusted counterclockwise, the tension of the wire is decreased, and the wire is easy to pull out. Below the tension adjusting knob, there is a felt tightness adjusting push rod 3030 coaxial with the double-felt pressing device 3015 on the right side of the tensioner. When the wire is replaced, the felt tightness adjusting push rod 3030 is pushed to the right to loosen the two pieces of felt, the wire is passed through the middle of the two pieces of felt, and then the push rod is loosened to clamp the wire. Figure 3 and Figure 4 .

[0040] Below the front end of the pressure rod 3011 of the tensioner, there is a pressure rod top pulley 3012. The pressure rod extends forward, and a square narrow hole is vertically arranged at the middle axis position of the pressure rod. The square narrow hole is a light-shielding film mounting hole 3022. A light-shielding film 3024 is inserted into the light-shielding film mounting hole 3022, and the light-shielding film 3024 is locked and fixed by a film side fixing screw 3023.

[0041] The path of the wire 204 through the tensioner 301 is as follows: the wire 204 is passed out from the wire cover porcelain eye 202 at the top of the wire cover 201, passes through the bottom porcelain eye 3018 of the tensioner 301, passes through the double-felt pressing device 3015, winds around the magnetic resistance wheel 3014 once, passes through the rear pulley 3019 and the front pulley 3020, passes through the pressure rod top pulley 3012, and then reaches the front automatic winding machine top porcelain eye 205. The wire 204 then passes through the needle guide 109 and is finally clamped in the wire clamping device 104. Figure 3 and Figure 4 .

[0042] As shown in Figure 5The light-sensing front and back adjusting device comprises: rear row optical fiber left support 401, rear row optical fiber right support 402, front row optical fiber left support 403, front row optical fiber right support 404, rear row optical fiber sensor sending end 405, rear row optical fiber sensor receiving end 406, front row optical fiber sensor sending end 407, front row optical fiber sensor receiving end 408, rear row left front and back light-sensing adjusting mechanism 501, rear row right front and back light-sensing adjusting mechanism 502, front row left front and back light-sensing adjusting mechanism 503, front row right front and back light-sensing adjusting mechanism 504, front and back fine adjustment nut 505, front and back fine adjustment sliding groove 506, front and back fine adjustment screw 507, front and back fine adjustment screw hole 508 and front and back fine adjustment sliding block 509; the lower ends of the rear row optical fiber left support 401 and the rear row optical fiber right support 402 are fixedly installed on the left and right sides of the rear row of the pay-off rack 203; the lower ends of the front row optical fiber left support 403 and the front row optical fiber right support 404 are fixedly installed on the left and right sides of the front row of the pay-off rack 203; the rear row optical fiber sensor sending end 405 and the rear row optical fiber sensor receiving end 406 are installed on the top ends of the rear row optical fiber left support 401 and the rear row optical fiber right support 402; the front row optical fiber sensor sending end 407 and the front row optical fiber sensor receiving end 408 are installed on the top ends of the front row optical fiber left support 403 and the front row optical fiber right support 404; all the supports of the rear row optical fiber left support 401, the rear row optical fiber right support 402, the front row optical fiber left support 403 and the front row optical fiber right support 404 have light-sensing front and back adjusting mechanisms, which are symmetrical left and right; all the optical fiber sensors are installed on the top ends of all the respective supports, are not fixedly installed, and can adjust the positions of the optical fiber sensors through the light-sensing front and back adjusting device.

[0043] The rear row left front and back light-sensing adjusting mechanism 501 is taken as an example to illustrate the internal structure of the front and back light-sensing adjusting mechanism, which comprises: front and back fine adjustment nut 505, front and back fine adjustment sliding groove 506, front and back fine adjustment screw 507, front and back fine adjustment screw hole 508 and front and back fine adjustment sliding block 509; the rear row optical fiber sensor sending end 405 is fixedly installed on the front and back fine adjustment sliding block 509, the front and back fine adjustment sliding groove 506 is fixedly installed on the top end of the rear row optical fiber left support 401, the front and back fine adjustment sliding block 509 is installed in the groove of the front and back fine adjustment sliding groove 506, the center has a front and back fine adjustment screw hole 508 which is a threaded through hole, the front and back fine adjustment screw 507 can pass through the threaded through hole of the front and back fine adjustment screw hole 508, the front and back ends of the front and back fine adjustment screw 507 are fixedly installed on the front and back walls of the front and back fine adjustment sliding groove 506, can rotate and cannot move relative to the front and back, the front and back fine adjustment sliding block 509 is driven to move forward and backward by rotating the front and back fine adjustment nut 505, so as to realize the front and back adjustment of the position of the rear row optical fiber sensor sending end 405.

[0044] Adjusting the front and rear light sensing adjustment mechanism of the left side of the back row, the front and rear light sensing adjustment mechanism of the right side of the back row, so that the pair of optical fiber sensors of the back row, i.e. the back row optical fiber sensor sending end 405 and the back row optical fiber sensor receiving end 406, are directly opposite. When any wire monitored by the tensioner 301 breaks, the tensioner pressure rod 3011 tilts upward, at which time the light-blocking film 3024 of the tensioner pressure rod 3011 blocks the back row optical fiber sensor, and the optical fiber sensor sends a high level. The PLC receives the high level signal and automatically alarms.

[0045] Similarly, adjust the front and rear light sensing adjustment mechanism of the left side of the front row, the front and rear light sensing adjustment mechanism of the right side of the front row, so that the pair of optical fiber sensors of the front row, i.e. the front row optical fiber sensor sending end 407 and the front row optical fiber sensor receiving end 408, are directly opposite. When any wire monitored by the tensioner breaks, the tension rod tilts upward, at which time the light-blocking film of the tensioner pressure rod blocks the front row optical fiber sensor, and the optical fiber sensor sends a high level. The PLC receives the high level signal and also automatically alarms.

[0046] As Figure 6 , the light sensing up and down adjustment device includes: four optical fiber supports, i.e. the back row optical fiber left support 401, the back row optical fiber right support 402, the front row optical fiber left support 403, and the front row optical fiber right support 404; four up and down light sensing adjustment mechanisms, i.e. the back row left side up and down light sensing adjustment mechanism 601, the back row right side up and down light sensing adjustment mechanism 602, the front row left side up and down light sensing adjustment mechanism 603, and the front row right side up and down light sensing adjustment mechanism 604; up and down fine adjustment screws 605, up and down fine adjustment sliding holes 606, and up and down fine adjustment sliding rods 607; each of the four supports has an up and down light sensing adjustment mechanism, and the left and right sides are symmetrical.

[0047] Each up and down light sensing adjustment mechanism includes: an up and down fine adjustment screw, an up and down fine adjustment sliding hole, and an up and down fine adjustment sliding rod. Each up and down light sensing adjustment mechanism is located at the lower part of each optical fiber support. The lower part of each optical fiber support has two sections. The upper section has an up and down fine adjustment sliding rod, and the lower section has an up and down fine adjustment sliding hole. The up and down fine adjustment sliding rod of the upper section is inserted into the up and down fine adjustment sliding hole of the lower section to a suitable depth, the height of the optical fiber support is adjusted, and the up and down fine adjustment screw on the side of the lower section of the optical fiber left support is locked.

[0048] If the up and down positions of the front row optical fiber sensors are not correct, the front row left side up and down light sensing adjustment mechanism 603 and the front row right side up and down light sensing adjustment mechanism 604 can be adjusted to make the up and down positions of the pair of optical fiber sensors of the front row, i.e. the front row optical fiber sensor sending end 407 and the front row optical fiber sensor receiving end 408, directly opposite.

[0049] When the up-down positions of the rear row optical fiber sensor are not correct, the up-down light sensing adjustment mechanism 601 on the left side of the rear row and the up-down light sensing adjustment mechanism 602 on the right side of the rear row are adjusted to make the up-down positions of the pair of optical fiber sensors, i.e. the rear row optical fiber sensor sending end 405 and the rear row optical fiber sensor receiving end 406, correct.

[0050] Taking the up-down light sensing adjustment mechanism 601 on the left side of the rear row as an example, the up-down light sensing adjustment mechanism 601 on the left side of the rear row comprises an up-down fine adjustment screw 605, an up-down fine adjustment sliding hole 606 and an up-down fine adjustment sliding rod 607. The up-down fine adjustment screw 605 is loosened counterclockwise, and the up-down fine adjustment sliding rod 607 on the upper part of the rear row optical fiber left support 401 is adjusted to a suitable height position downward or upward from the up-down fine adjustment sliding hole 606, and then the up-down fine adjustment screw 605 is tightened clockwise.

[0051] Embodiment 2

[0052] The main technical solution of the present embodiment is basically the same as that of Embodiment 1. The features not explained in the present embodiment adopt the explanations in Embodiment 1, which will not be described here. The plurality of automatic winding machines in the present embodiment are connected together in series, which is suitable for a plurality of windings of a transformer. Each automatic winding machine has a plurality of tensioners in front and rear rows. There are as many tensioners as the number of shafts. Since the multi-shaft automatic winding machine can improve the production efficiency, all the tensioners are arranged in a row, which is too dense. Therefore, they are divided into front and rear rows, and the up-down positions are staggered to avoid the entanglement of the multi-shaft wires. For the plurality of automatic winding machines connected together in series, the optical fiber sensors are installed on the wire feeding frame of each automatic winding machine. Since there are a plurality of shafts of the winding machine, the probability of failure of the original mechanical pressure switch spring of the tensioner is higher. Since the optical fiber sensors are installed on the front and rear rows of the wire feeding frame of each winding machine, when any shaft of any automatic winding machine corresponding to the tensioner fails, the optical fiber sensor immediately detects the broken wire signal, which supplements the defect of the failure of the mechanical pressure switch of the tensioner, effectively avoids the situation of missing winding groups in the case of reducing the number of employees and increasing efficiency when introducing a full-automatic production line to produce multi-winding group transformers, and thus realizes the quality fool-proofing.

[0053] Finally, it should be noted that the above embodiments only use an eight-shaft automatic winding machine as an example, and the principle of installing optical fiber sensors on the wire feeding frame to detect and monitor the broken wire anomaly is also applicable to the eight-shaft machine, ten-shaft machine, twelve-shaft machine, sixteen-shaft machine and other automatic winding machines currently popular on the market. The above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit the scope of protection of the claims. Those skilled in the art should understand that the technical solution of the present application can be modified or replaced by equivalents, but it belongs to the same and the protection scope of the technical solution of the present application.

Claims

1. A transformer automatic winding machine with improved stability of broken wire alarm, characterized in that: It includes automatic winding machine, auxiliary device, light feeling front and back adjusting device and light feeling up and down adjusting device, wherein the automatic winding machine includes winding clamp, tray, touch screen, pneumatic scissors, wire clamping device and needle turning cylinder; the automatic winding machine is located at the front end, and the auxiliary device is located at the rear end, which includes wire rack, spool, wire cover and tensioner; wherein the wire rack is located at the rear side of the automatic winding machine, and has two platforms on the upper and lower sides, and the upper and lower platforms can all place spools, the spools are placed on the platforms in a dot matrix, each spool is wrapped by a wire cover to prevent the wire from being thrown around and knotted during winding, and each wire cover has a porcelain eye at the top, from which the enameled wire passes upwards, and the tensioner is located above the wire cover, and each wire cover corresponds to a tensioner.

2. The transformer automatic winding machine with improved stability of broken wire alarm according to claim 1, characterized in that: The tensioner includes tensioner pressure rod, pressure rod top pulley, mechanical pressure switch, magnetic resistance wheel, double-piece wool felt pressing device, support locking knob, tensioner support, bottom porcelain eye, rear pulley, front pulley, pressure rod rear end rectangular connecting handle, light-shielding film mounting hole, film side fixing screw, light-shielding film, switch spring piece, switch roller, switch wiring common end, switch moving contact, switch moving break contact, wool felt tightness adjusting push rod, tension adjusting knob and counter-tension adjusting knob; from top to bottom on the right side of the tensioner, there are bottom porcelain eye, double-piece wool felt pressing device behind, rear pulley in the middle, front pulley in front, magnetic resistance wheel further upwards, mechanical pressure switch fixedly installed above the front of the magnetic resistance wheel, spring piece and roller of the mechanical pressure switch below the pressure rod rear end rectangular connecting handle, and pressure rod in front; the pressure rod rotates around the rotating shaft below the mechanical pressure switch, the rotating shaft extends into the tensioner, and the inside has a spring to restrict the rotation of the rotating shaft; the front side of the tensioner has a counter-tension adjusting knob; on the left side of the tensioner, there is a tension adjusting knob coaxial with the magnetic resistance wheel on the left side of the tensioner; below the tension adjusting knob, there is a wool felt tightness adjusting push rod coaxial with the double-piece wool felt pressing device on the right side of the tensioner.

3. The transformer automatic winding machine with improved stability of broken wire alarm according to claim 2, characterized in that: The front end of the tensioner pressure rod has a pressure rod top pulley below, the pressure rod extends further forward, the middle shaft position is perpendicular to the front, and the light-shielding film mounting hole is arranged on the front.

4. The transformer automatic winding machine with improved stability of broken wire alarm according to claim 1, characterized in that: The light feeling front and back adjusting device includes rear row optical fiber left support, rear row optical fiber right support, front row optical fiber left support, front row optical fiber right support, rear row optical fiber sensor sending end, rear row optical fiber sensor receiving end, front row optical fiber sensor sending end, front row optical fiber sensor receiving end, rear row left side front and back light feeling adjusting mechanism, rear row right side front and back light feeling adjusting mechanism, front row left side front and back light feeling adjusting mechanism, front row right side front and back light feeling adjusting mechanism, front and back fine adjustment nut, front and back fine adjustment sliding groove, front and back fine adjustment screw, front and back fine adjustment screw hole and front and back fine adjustment sliding block.

5. The transformer automatic winding machine with improved stability of broken wire alarm according to claim 4, characterized in that: The lower ends of the rear row optical fiber left support and the rear row optical fiber right support are fixedly installed on the left and right sides of the pay-off rack; the lower ends of the front row optical fiber left support and the front row optical fiber right support are fixedly installed on the left and right sides of the pay-off rack; the rear row optical fiber sensor sending end and the rear row optical fiber sensor receiving end are installed on the top ends of the rear row optical fiber left support and the rear row optical fiber right support; the front row optical fiber sensor sending end and the front row optical fiber sensor receiving end are installed on the top ends of the front row optical fiber left support and the front row optical fiber right support; the top of the rear row optical fiber left support, the top of the rear row optical fiber right support, the top of the front row optical fiber left support and the top of the front row optical fiber right support are provided with light sensing front and rear adjusting devices, which are symmetrical left and right; all the optical fiber sensors are fixedly installed on the top of all the supports and can be adjusted in position through the light sensing front and rear adjusting devices.

6. The transformer automatic winding machine with improved stability of broken wire alarm according to claim 4, characterized in that: The rear row front and rear light sensing adjusting mechanism comprises a front and rear fine adjustment nut, a front and rear fine adjustment slot, a front and rear fine adjustment screw, a front and rear fine adjustment screw hole and a front and rear fine adjustment block. The rear row optical fiber sensor sending end is fixedly installed on the front and rear fine adjustment block. The front and rear fine adjustment slot is fixedly installed on the top end of the rear row optical fiber left support. The front and rear fine adjustment block is installed in the slot of the front and rear fine adjustment slot. The center of the front and rear fine adjustment block has a front and rear fine adjustment screw hole which is a threaded through hole. The front and rear fine adjustment screw can pass through the threaded through hole of the front and rear fine adjustment screw hole. The front and rear ends of the front and rear fine adjustment screw are fixedly installed on the front and rear walls of the front and rear fine adjustment slot and can rotate but cannot move relative to the front and rear. The front and rear fine adjustment block is moved forward and backward by rotating the front and rear fine adjustment nut.

7. The transformer automatic winding machine with improved stability of broken wire alarm according to claim 1, characterized in that: The light sensing up and down adjusting device comprises four supports, i.e. the rear row optical fiber left support, the rear row optical fiber right support, the front row optical fiber left support and the front row optical fiber right support, four up and down light sensing adjusting mechanisms, i.e. the rear row left side up and down light sensing adjusting mechanism, the rear row right side up and down light sensing adjusting mechanism, the front row left side up and down light sensing adjusting mechanism and the front row right side up and down light sensing adjusting mechanism, an up and down fine adjustment nut, an up and down fine adjustment slot and an up and down fine adjustment rod. Each of the four supports has an up and down light sensing adjusting mechanism at the lower part thereof and is symmetrical left and right.

8. The transformer automatic winding machine with improved stability of broken wire alarm according to claim 7, characterized in that: Each of the up and down light sensing adjusting mechanisms comprises an up and down fine adjustment screw, an up and down fine adjustment slot and an up and down fine adjustment rod. Each of the up and down light sensing adjusting mechanisms is located at the lower part of each of the optical fiber supports. The lower part of each of the optical fiber supports has two sections. The upper section has the up and down fine adjustment rod and the lower section has the up and down fine adjustment slot. The up and down fine adjustment rod of the upper section is inserted into the up and down fine adjustment slot of the lower section to a proper depth. The height of the optical fiber support is adjusted. The up and down fine adjustment screw is locked on the side surface of the lower section of the optical fiber left support.

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