CN212230237U - Production line for convenient production of dry-type transformer - Google Patents

Abstract

The utility model relates to a production line of convenient production of dry-type transformer, it includes former feed bin station, high-voltage winding frock, low-voltage winding frock, pouring frock, dry frock, assembles the station and the line hangs, and the line hangs the material that is used for between each station and transports. The production line of the utility model has simple structure, the copper wire of the high-voltage winding tool is always in a moderate tensioning state in the winding process, and the copper wire is not easy to deform; the copper foil tool, the insulation tool and the winding tool of the low-voltage winding tool are simple in replacement operation of raw materials and dies; the drawing structure of the insulating tool is arranged, so that the insulating tool can be directly moved to the outside of the foil winding machine to replace an insulating material coil, a large material replacing space does not need to be configured in the foil winding machine, the replacement of the insulating material coil is simpler and more convenient, the size of equipment is effectively reduced, the occupied area of the equipment is reduced, and the production cost of the equipment is reduced.

Description

Production line for convenient production of dry-type transformer

Technical Field

The utility model belongs to the technical field of dry-type transformer's production facility and specifically relates to indicate the production line of the convenient production of dry-type transformer.

Background

The resin-cast dry-type transformer comprises a high-voltage winding group and a low-voltage winding group; the high-voltage winding comprises a first insulating layer wound by a plurality of layers of high-voltage winding tools, an insulated copper wire arranged in the first insulating layer and wound by the high-voltage winding tools, a plurality of first air passages arranged at intervals in the first insulating layer and six tapping terminals connected with the winding wire through tapping leads, the distance between the adjacent tapping leads is 15-20 mm, the distance between the tapping leads and the unconnected wiring terminals is not less than 10mm, and the tapping turns of the tapping leads are 16:15:15: 15.

The existing winding device for the high-voltage winding only comprises an active winding mechanism, when an insulated copper wire is wound, the active winding mechanism drives a high-voltage winding die to rotate and further pulls the copper wire to be wound to rotate passively, so that the copper wire is in a tight state for a long time, the winding tightness of the insulated copper wire on the peripheral surface of the high-voltage winding die is easily different, the copper wire is easily deformed by traction, and the like, certain floating of the product performance of the high-voltage winding is influenced, the standardized production of the product is influenced, and the defective rate is higher.

In addition, because the foil winder needs to have the conveying and the replacement operation of copper foil material roll and insulating material roll simultaneously, and its equipment needs to set up two reloading stations, leads to current foil winder's structure comparatively complicated usually, and the volume is comparatively huge, and occupation of land space is great, and equipment cost is high.

Disclosure of Invention

The utility model provides a production line of convenient production of dry-type transformer to overcome the above-mentioned problem that current dry-type transformer's apparatus for producing exists.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the production line for the convenient production of the dry-type transformer comprises a raw material bin station, a high-voltage winding tool, a low-voltage winding tool, a pouring tool, a drying tool, an assembling station and a traveling crane, wherein the traveling crane is used for conveying materials among all stations. The raw material bin station is used for storing components and raw materials for producing the transformer.

The high-voltage winding tool comprises a winding mechanism and a fiber mesh mechanism, wherein the winding mechanism comprises a main frame and an auxiliary frame; the winding motor, the chuck and the driving shaft are assembled on the main frame, the chuck is fixedly assembled on a power output shaft of the winding motor, one end of the driving shaft is fixedly clamped on a bayonet of the chuck, the high-voltage winding die is sleeved on the driving shaft, and the driving shaft drives the high-voltage winding die to synchronously rotate with a fixed shaft; the auxiliary frame is provided with a shaft sleeve and an adjusting wheel, the shaft sleeve can be freely fixed on the auxiliary frame in a rotating mode, the other end of the driving shaft extends into the shaft sleeve, and the adjusting wheel is used for driving the shaft sleeve to move towards or depart from the driving shaft.

The high-voltage winding tool further comprises a copper wire mechanism, the copper wire mechanism comprises a base, and a tensioning motor, a reduction gearbox, an installation shaft and a locking nut which are assembled on the base, the installation shaft is fixedly arranged on the base through at least two bearing block fixing frames, the tensioning motor drives the installation shaft to rotate in a fixed axis mode through transmission of the reduction gearbox, the locking nut is assembled at the end portion of the installation shaft, and the locking nut is used for locking and assembling a copper wire coil on the installation shaft; the tensioning motor drives the mounting shaft to drive the copper wire coil to actively output the copper wire, and the insulated copper wire output by the copper wire coil is wound on the peripheral surface of the high-voltage winding die at a constant speed; the fiber net mechanism comprises a vertical frame and a fiber roll which is rotationally assembled on the vertical frame as a fixed shaft, and the fiber net output by the fiber roll is wound on the circumferential surface of the high-voltage winding die.

The low-voltage winding tool comprises a copper foil tool, an insulation tool and a winding tool which are sequentially arranged; the copper foil tool comprises a copper foil rack, an expansion roller, a copper foil motor and a flattening roller group, wherein the expansion roller, the copper foil motor and the flattening roller group are assembled on the copper foil rack; the insulating frock includes insulating frame, and on the roller of insulating material book fixed mounting in this insulating frame, insulating frame disposes the walking wheel of following left side or right side directional removal, and the change that insulating material was rolled up is inserted or is pulled out by the left side or the right side of low voltage winding frock to insulating frame.

The winding tool comprises a winding frame, a guide roller group, a winding roller and a winding motor, wherein the guide roller group, the winding roller and the winding motor are assembled on the winding frame, a low-voltage winding die is assembled on the winding roller, the winding roller is a square roller shaft matched with a square through hole of the low-voltage winding die, the winding roller is driven by the sleeve motor to do fixed-shaft rotation, the copper foil tool and the insulation tool respectively and independently convey copper foils and insulation films for the low-voltage winding die through the corresponding guide rollers in the guide roller group, and the copper foils and the insulation films are wound on the outer peripheral surface of the low-voltage winding.

The low-voltage winding tool is provided with two groups of copper foil tools and two groups of insulation tools, wherein the two groups of copper foil tools and the two groups of insulation tools respectively carry out independent conveying of copper foils and insulation films through corresponding guide rollers; the copper foil tool further comprises a locking wheel and a swinging arm, the locking wheel is assembled on the copper foil rack through the swinging arm, and the swinging arm is provided with a torsion spring which enables the locking wheel on the swinging arm to press the outer peripheral surface of the copper foil coil; the side wall of the copper foil rack is hinged with a triangular support, the triangular support uses the vertical direction as the axial direction to rotate as a fixed shaft, one end of the expansion roller is fixedly assembled on the copper foil rack, and the other end of the expansion roller is detachably and tightly connected with the triangular support.

The low-voltage winding tool further comprises a welding tool, and the welding tool comprises a mounting seat, a transverse moving motor, a welding rack, a welding arm, a welding gun, a welding motor, an upper cross beam, a welding oil cylinder, a lower cross beam and a welding clamping plate; the mounting seat is fixedly assembled on the winding frame; the installation seat is fixedly provided with two first guide rails extending along the left-right direction, the welding rack is assembled on the guide rails in a limiting mode, a rack is fixed on the bottom edge of the welding rack, the transverse moving motor is fixedly assembled on the installation seat, and the transverse moving motor drives the welding rack to move to a welding station in the winding tool along the left-right direction through the meshing transmission of a matched gear; the welding rack is fixedly provided with two second guide rails which are distributed up and down and extend left and right, the welding arm is assembled on the second guide rails, the welding motor is fixedly assembled on the welding rack, a power output shaft of the welding motor is in transmission connection with a transmission screw rod fixedly assembled on the welding rack, and the welding motor drives the welding arm to directionally slide in the left and right directions through the transmission screw rod; the welding gun is fixedly assembled on the welding arm according to a set direction; the upper cross beam is fixedly assembled on the welding rack through a left connecting seat and a right connecting seat, one end of the lower cross beam is fixedly assembled on the upper cross beam through a connecting piece, and the upper cross beam, the connecting piece and the lower cross beam are connected into a whole to form a U-shaped structure with an opening facing a welding station; the welding oil cylinder is fixedly arranged on the upper cross beam in a fixed-shaft rotating mode through the first hinging seat, the welding clamp plate is fixedly arranged on the upper cross beam in a fixed-shaft rotating mode through the second hinging seat, a cylinder rod of the welding oil cylinder is hinged to the welding clamp plate, the cylinder rod of the welding oil cylinder moves in a telescopic mode to drive the welding clamp plate to swing up and down with a fulcrum of the second hinging seat, a lead row to be welded and a copper foil are fixedly clamped between the welding clamp plate and the lower cross beam in a superposed mode, and the welding gun welds the lead row and the copper foil. The upper cross beam is provided with five welding oil cylinders which work independently and five corresponding welding clamping plates which are distributed in sequence along the transverse direction; the welding arm is provided with a lifting rod and a front and rear adjusting rod, the lifting rod is assembled on the welding arm in a lifting and adjusting mode, the front and rear adjusting rod is assembled on the lower end portion of the lifting rod in a front and rear adjusting mode in a front and rear direction adjusting mode, and the welding gun is fixedly assembled at the rear end of the front and rear adjusting rod in a vertically swinging and adjusting mode.

The drying tool is used for drying the high-voltage winding obtained by pouring through the pouring tool and the low-voltage winding obtained by the low-voltage winding tool at the temperature of 120-140 ℃.

And the assembling station is used for assembling and combining the high-voltage winding, the low-voltage winding, the iron core and the connecting component thereof to obtain a finished dry-type transformer.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: the utility model discloses a production line simple structure, high-voltage winding frock pass through the configuration of elasticity motor, reducing gear box for the copper line is rolled up initiative output insulated copper line, makes the copper line be in the moderate state of tensioning all the time at the in-process of coiling, and the copper line is difficult to take place to warp, is favorable to high-voltage winding's standard coiling, guarantees to produce the stability and the standard nature of property ability parameter. The raw materials of this low voltage winding frock's copper foil frock, insulating frock and winding frock, the change easy operation of mould, the structure setting of the pull formula of insulating frock makes it can directly move to the outside of coiling foil machine and carries out the change of insulating material book, need not dispose great material change space in the coiling foil machine, and the change that even makes insulating material book more simple and convenient has also effectively reduced the volume of equipment, reduces the area of equipment and reduces its manufacturing cost.

Drawings

Fig. 1 is a schematic view of a top view structure of the production line of the present invention.

Fig. 2 is a schematic view of the overlooking structure of the high-voltage winding tool of the present invention.

Fig. 3 is the left side view structure diagram of the low voltage winding tool of the present invention.

Fig. 4 is the utility model discloses a main view structure schematic diagram of the welding frock of low voltage winding frock.

Fig. 5 is a schematic perspective view of the resin pouring tool of the present invention.

Fig. 6 is a schematic view of the three-dimensional structure of the opening and closing device for the bin gate of the present invention.

Fig. 7 is a schematic view of the reaction chamber of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1, the production line for the convenient production of the dry-type transformer comprises a raw material bin station 1, a high-voltage winding tool 2, a low-voltage winding tool 3, a pouring tool 4, a drying tool 5, an assembling station 6, a finished product bin 7 and a traveling crane 8, wherein the traveling crane 7 is used for conveying materials among stations. The raw material bin station 1 is used for storing components and raw materials for producing the transformer. The drying tool 5 is used for drying the high-voltage winding obtained by pouring the pouring tool 4 and the low-voltage winding obtained by the low-voltage winding tool 3 at the temperature of 120-140 ℃; and the assembling station 6 is used for carrying out general assembly on the high-voltage winding, the low-voltage winding, the base, the upper clamping piece, the lower clamping piece, the body insulating piece and the hardware connecting piece to obtain a dry-type transformer finished product. The dry-type transformer finished product is transferred to a finished product bin 7 through a traveling crane 8 for storage.

Referring to fig. 1 and 2, the high-voltage winding tool 2 includes a winding mechanism 21, a copper wire mechanism 22, and a fiber web mechanism 23. The winding mechanism 21 comprises a main frame 211 and an auxiliary frame 212; a winding motor 2111, a chuck 2112 and a driving shaft 2113 are assembled on the main frame 211, the chuck 2112 is fixedly assembled on a power output shaft of the winding motor 2111, one end of the driving shaft 2113 is fixedly clamped on a bayonet of the chuck 2112, a high-voltage winding die 24 is sleeved on the driving shaft 2113, and the driving shaft 2113 drives the high-voltage winding die 24 to synchronously rotate with a fixed shaft; the drive shaft 2113 has a square cross-section; a square through hole matched with the high-voltage winding mold 24 is arranged at the center of the high-voltage winding mold.

With continued reference to fig. 2, the sub-frame 212 is provided with a sleeve 2121, an adjustment wheel 2122, the sleeve 2121 is freely fixed and rotatably mounted on the sub-frame 212, the other end of the driving shaft 2113 extends into the sleeve 2121, and the adjustment wheel 2122 is used for driving the sleeve 2121 to move towards or away from the driving shaft 2113. A first guide rail 2123 is provided at the bottom of the sub-frame 212, the first guide rail 2123 extends in the axial direction of the drive shaft 2113, and the sub-frame 212 slides along the first guide rail 2123 to adjust the distance from the main frame 211. A locking groove is formed in the first guide rail 2123, a locking bolt is disposed in the locking groove, a head of the locking bolt is assembled in the locking groove, and a lead screw end of the locking bolt penetrates through the bottom of the sub-frame 212 and is locked by the nut.

With continued reference to fig. 2, the copper wire mechanism 22 includes a base 225, and a tension motor 221, a reduction box 222, a mounting shaft 223 and a lock nut 224 which are assembled on the base 225, a second guide rail 226 is provided on the bottom of the base 225, the extending direction of the second guide rail 226 is distributed parallel to the axial direction of the driving shaft 2113, and the base 225 slides along the second guide rail 226 to adjust and align with the high-voltage winding mold 24. The mounting shaft 223 is arranged on the base 225 through two bearing seat fixing frames, the tensioning motor 221 drives the mounting shaft 223 to make fixed-shaft rotation through the transmission of the reduction gearbox 222, the locking nut 224 is assembled at the end part of the mounting shaft 223, and the locking nut 224 is used for locking and assembling a copper coil on the mounting shaft 223; the tension motor 221 drives the mounting shaft 223 to drive the copper coil to actively output the copper wire 227, and the insulated copper wire 227 output by the copper coil is wound on the peripheral surface of the high-voltage winding mold 24 at a constant speed. The web mechanism 23 includes a vertical frame 231 and a web roll 322 fixed to the vertical frame in a rotatable manner, and the web 33 fed from the web roll 322 is wound around the peripheral surface of the high-voltage winding die 24.

With continued reference to fig. 2, the use method of the high-voltage winding tool 2 is as follows: moving a high-voltage winding die 24 to a station of a winding mechanism 21 by using a traveling crane 8, penetrating a driving shaft 2113 through the die, and clamping one end of the driving shaft 2113 in a bayonet of a chuck 2112; then, the matching position of the subframe 212 on the first guide rail 2123 is adjusted, the subframe is locked and positioned, and the rotation of the adjusting wheel 2122 drives the shaft sleeve 2121 to be sleeved on the other end of the driving shaft 2113, so that the installation of the high-voltage winding mold 24 is completed; the copper wire coil is moved and installed on an installation shaft 223 of the copper wire mechanism 22 by using a gantry crane, and the copper wire coil is locked by using a locking nut 224; and then moving the fiber coil through a gantry crane and assembling the fiber coil on a vertical frame, starting a tensioning motor 221 and a winding motor 2111, and sequentially winding the fiber mesh and the insulated copper wire on the circumferential surface of the high-voltage winding.

Continuing to refer to fig. 2, this high-voltage winding frock 2 simple structure for through the configuration of elasticity motor, reducing gear box 222, make the copper coil of wire initiative output insulated copper wire, make the copper wire be in the tensioning moderate state all the time at the in-process of coiling, the copper wire is difficult to take place to warp, is favorable to high-voltage winding's standard coiling, guarantees stability and the standability of product performance parameter.

The production steps of the high-voltage winding are as follows:

step 1a, installing a high-voltage winding die on a high-voltage winding tool 2 to rotate, and preparing the high-voltage winding die;

step 1b, winding wires and a first insulating layer are wound on a high-voltage winding die, a plurality of air channel rods arranged at intervals are inserted, the winding wires are connected with a wiring terminal, a layer of release agent is brushed between the first insulating layer and the high-voltage winding, a first coil winding procedure is carried out, and finally a first coil is obtained;

step 1c, conveying the first coil in the step 1b into a drying tool 5 for a drying process, keeping the temperature at 120-140 ℃, and keeping the temperature for 9-12 hours;

step 1d, conveying the first coil dried in the step 1c into a resin pouring tool 4 for pouring;

step 1e, sending the first coil which is cast in the step 1d into a drying tool 5 for curing and drying; the preferable process parameters for drying are as follows: the temperature is 80-140 ℃, and the method comprises the following four stages of sequentially forming (1) the temperature of the first stage is 80-95 ℃ and the temperature keeping time is 3-5 h, and (2) the temperature of the second stage is 100-110 ℃ and the temperature keeping time is 2-3 h; (3) the temperature of the third stage is 120-140 ℃, and the temperature is kept for 3-5 h; (4) cooling to 90-110 ℃ at the fourth stage, and keeping the temperature for 2-3 h;

step 1f, performing a demoulding, material returning and cooling process on the first coil in the step 1 e;

step 1g, polishing and finishing the outer surface of the high-voltage winding obtained in the step 1f to enable the port of the high-voltage winding to be flat and smooth, and performing a finishing process to obtain the high-voltage winding;

step 1h, after the pouring of step 1d is finished, cleaning a mixing tank of the resin pouring tool 4, taking alcohol as a cleaning agent, automatically extracting the cleaning agent into the mixing tank for a pipeline during cleaning, sealing the mixing tank during cleaning, discharging the cleaning agent from the mixing tank through a waste liquid port after cleaning is finished, discharging and collecting to obtain cleaning waste liquid, standing the cleaning waste liquid to obtain supernatant which is alcohol, using the precipitate as resin, and using the supernatant for secondary use to clean the mixing tank to perform a cleaning process.

Referring to fig. 1, 3 and 4, the low-voltage winding tool 3 includes a copper foil tool 31, an insulation tool 32 and a winding tool 33 which are sequentially arranged from back to front. The copper foil tool 31 comprises a copper foil rack 311, an expansion roller 312, a copper foil motor and a flattening roller group 313, wherein the expansion roller 312, the copper foil motor and the flattening roller group 313 are assembled on the copper foil rack 311, a copper foil roll 314 is assembled on the expansion roller 312, the expansion roller 312 is expanded to tightly push and fix the copper foil roll 314, and the copper foil motor drives the copper foil roll 314 to actively feed; the flattening roller group 313 includes a driving roller 3131 and a driven roller 3132 through which the copper foil passes through a gap between the driving roller 3131 and the driven roller, and as shown in fig. 3, the driving roller 3131 is provided with a lift adjusting cylinder 3133 so as to adjust the gap between the driving roller 3131 and the driven roller 3132 and the pressure against the copper foil, and the flattening roller group 313 serves to flatten and flatten the outgoing copper foil.

With continued reference to fig. 3, the insulating tool 32 includes an insulating frame 321, the insulating frame 321 is a box-shaped structure, the insulating material roll 323 is firstly placed on the roller shaft 322 of the insulating frame 321, then the insulating material roll 323 with the roller shaft 322 is placed in a set position in the insulating frame 321, and the installation operation of the insulating material roll 323 can be completed by limiting two ends of the roller shaft 322, the insulating frame 321 is provided with a traveling wheel 324 which directionally moves along the left side or the right side, and the insulating frame 321 is inserted into or pulled out from the left side or the right side of the low-voltage winding tool 33 to replace the insulating material roll 323.

With continued reference to fig. 3, the winding tool 33 includes a winding frame 331, and a guide roller set 332, a winding roller 333 and a winding motor which are assembled on the winding frame 331, a low-voltage winding mold 334 is assembled on the winding roller 333, the winding roller 333 is a square roller shaft which is matched with a square through hole of the low-voltage winding mold 334, the winding roller 333 is driven by the set motor to perform a fixed-axis rotation action, the copper foil tool 31 and the insulation tool 32 independently convey a copper foil and an insulation film for the low-voltage winding mold 334 through corresponding guide rollers in the guide roller set 332, and the copper foil and the insulation film are wound on the outer peripheral surface of the low-voltage winding mold 334.

With continued reference to fig. 3, preferably, the low-voltage winding tooling 33 is configured with two sets of the copper foil tooling 31 and two sets of the insulation tooling 32, and the two sets of the copper foil tooling 31 and the two sets of the insulation tooling 32 respectively carry out independent conveying of the copper foil and the insulation film through corresponding guide rollers; when the copper foil and the insulating film need to be wound in a double-layer mode, two groups of copper foil tools 31 and two groups of insulating tools 32 can be started synchronously; when only single-layer copper foil and insulating film are needed, only one of the copper foil tool 31 and the insulating tool 32 can be started, the other can be stopped, the raw material roll can be replaced and reserved during the period of stopping work, and when the copper foil tool 31 and the insulating tool 32 in the working state are used, the standby device is directly started, so that the production interruption time is effectively reduced, and the production efficiency is improved.

With continued reference to fig. 3, the expansion roller 312 includes a main roller shaft 3121, an expansion plate 3122 and an adjusting wheel 3123, three expansion plates 3122 are uniformly distributed in the axial direction of the main roller shaft 3121, both ends of the expansion plate 3122 are hinged to the ends corresponding to the main roller shaft 3121 through connecting rods, the adjusting wheel 3123 is in threaded connection with the ends of the main roller shaft 3121, the adjusting wheel 3123 screws in the central direction of the main roller shaft 3121 to push the connecting rods, and the three groups of connecting rods synchronously receive force to synchronously push the three expansion plates 3122 outwards to form an expansion action of the expansion roller 312.

With continued reference to fig. 3, the copper foil tooling 31 further includes a locking wheel 315 and a swing arm 316, the locking wheel 315 is freely rotatable, the locking wheel 315 is assembled on the copper foil rack 311 through the swing arm 316, and the swing arm 316 is configured with a torsion spring for urging the locking wheel 315 on the swing arm 316 to press the outer peripheral surface of the copper foil roll 314. Through the pressing action of the anti-loosening wheel 315, when the copper foil output is suspended, the copper foil of the copper foil roll 314 can keep a continuous winding state, and the accurate control of the copper foil output speed is facilitated.

With reference to fig. 3, the side wall of the copper foil frame 311 is hinged with a triangular bracket 317, the triangular bracket 317 rotates around a vertical axis, one end of the expansion roller 312 is fixedly mounted on the copper foil frame 311, and the other end of the expansion roller 312 is detachably locked to the triangular bracket 317. As shown in fig. 3, the winding tooling 33 is also configured with the triangular bracket 317, and the structure and the operation principle thereof are completely the same as those of the triangular bracket 317 configured with the copper foil frame 311, and are not repeated herein.

With reference to fig. 3, the low-voltage winding tool 33 of the present embodiment has a simple structure, the replacement operation of the copper foil tool 31, the insulation tool 32, and the raw material and mold of the winding tool 33 is simple, and the pull-out structure of the insulation tool 32 is configured to allow the insulation tool to be directly moved to the outside of the low-voltage winding tool 33 for replacing the insulation material roll 323, so that a large material replacement space is not required to be configured in the low-voltage winding tool 33, which not only facilitates the replacement of the insulation material roll 323, but also effectively reduces the volume of the device, reduces the floor space of the device, and reduces the production cost thereof.

With continued reference to fig. 3 and 4, the welding tool 34 is further included, and the welding tool 34 includes a mounting seat 341, a traverse motor 342, a welding rack 343, a welding arm 344, a welding gun 345, a welding motor 346, an upper cross beam 347, a welding cylinder 348, a lower cross beam 349 and a welding clamp plate 350; the mounting base 341 is fixedly mounted on the winding frame 331; two third guide rails 3411 extending in the left-right direction are fixedly arranged on the mounting base 341, the welding frame 343 is assembled on the third guide rails 3411 in a limiting manner, a rack 3412 is fixed to the bottom edge of the welding frame 343, the traverse motor 342 is fixedly assembled on the mounting base 341, and the traverse motor 342 drives the welding frame 343 to move to a welding station in the winding tool 33 in the left-right direction through the meshing transmission of the arranged gears; two fourth guide rails 3431 extending from left to right and distributed up and down are fixedly assembled on the welding rack 343, the welding arm 344 is assembled on the fourth guide rails 3431, the welding motor 346 is fixedly assembled on the welding rack 343, a power output shaft of the welding motor 346 is in transmission connection with a transmission screw 3461 fixedly assembled on the welding rack 343, and the welding motor 346 drives the welding arm 344 to directionally slide in the left-right direction through the transmission screw 3461; the welding torch 345 is fixedly mounted on the welding arm 344 in a set orientation; the upper crossbeam 347 is fixedly assembled on the welding frame 343 through a left connecting seat 3437 and a right connecting seat 3437, one end of the lower crossbeam 349 is fixedly assembled on the upper crossbeam 347 through a connecting piece 3479, and the upper crossbeam 347, the connecting piece 3479 and the lower crossbeam 349 are connected into a whole to form a U-shaped structure with an opening facing a welding station; the welding oil cylinder 348 is fixedly arranged on the upper cross beam 347 through a first hinge seat in a fixed-axis rotating manner, the welding clamp plate 350 is fixedly arranged on the upper cross beam 347 through a second hinge seat in a fixed-axis rotating manner, a cylinder rod of the welding oil cylinder 348 is hinged with the welding clamp plate 350, the cylinder rod of the welding oil cylinder 348 stretches and retracts to drive the welding clamp plate 350 to swing up and down through a second hinge seat fulcrum, a lead row to be welded and a copper foil are fixedly clamped between the welding clamp plate 350 and the lower cross beam 349 in an overlapped manner, and the lead row and the copper foil are welded by the welding gun 345.

As shown in fig. 4, the upper cross beam 347 is provided with five welding cylinders 348 and five corresponding welding clamps 350, which are distributed in sequence in the transverse direction and work independently. The welding arm 344 is provided with a lifting rod 3441 and a front-rear adjusting rod 3442, the lifting rod 3441 is assembled on the welding arm 344 in a lifting and adjusting way, the front-rear adjusting rod 3442 is assembled on the lower end part of the lifting rod 3441 in a front-rear direction adjusting way, and the welding gun 345 is fixedly assembled on the rear end of the front-rear adjusting rod 3442 in a vertical swinging and adjusting way; so as to adjust the up-down, front-back, and up-down angles of the welding torch 345 according to actual requirements.

The working process of the welding tool 34 is as follows: as shown in fig. 3 and 4, when the tin-plated copper lead bar and the copper foil need to be welded in the production process of the low-voltage winding; the traverse motor 342 is started to drive the welding rack 343 to traverse leftwards to a welding station in the winding tool 33 under the guidance of the mounting base 341, in the traverse process, the welding clamp plate 350 is in an open state under the drive of the welding oil cylinder 348, a copper lead row and copper foil pass through a gap between the welding clamp plate 350 and the lower cross beam 349, and when the rack 343 to be welded is moved transversely to a required position, the traverse motor 342 stops working; the welding oil cylinder 348 drives the welding clamp plate 350 to clamp and fix the copper lead row and the copper foil; under the control of a control device or manual control, the welding motor 346 drives the welding arm 344 and the welding gun 345 to weld the required welding positions one by one; after welding, the welding oil cylinder 348 drives the welding clamp plate 350 to swing upwards to release the clamping state, and the traverse motor 342 is started to drive the welding rack 343 to move transversely rightwards to reset; thus, one welding operation is completed.

The production steps of the low-voltage winding are as follows:

step 2a, mounting a low-voltage winding die on a foil winding machine for rotation, and preparing the low-voltage winding die;

step 2b, winding the second insulating layer and the copper foil on a low-voltage winding die, loading two copper bars arranged at intervals, loading a plurality of drawing pieces arranged at intervals and a temperature control probe tube bound on one drawing piece, and performing a second coil winding process to obtain a second coil;

step 2c, feeding the second coil obtained in the step 2b into a drying box, keeping the temperature at 120-140 ℃, and carrying out heat preservation for 9-11 hours to carry out a second coil drying procedure;

step 2d, taking out the second coil processed in the step 2c, carrying out an end-sealing process by using normal-temperature epoxy resin, standing for 2h and cooling;

and 2e, removing the low-voltage winding mold from the second coil subjected to the end sealing process, and performing a demolding process to obtain the low-voltage winding.

The copper foil is wound on a low-voltage winding die for 14 turns, and the method specifically comprises the following steps of (1) winding 4 turns firstly to place a plurality of spaced drawing pieces, (2) winding 4 turns secondly to place a plurality of spaced drawing pieces, (3) winding the remaining 6 turns finally, wherein the second insulating layer comprises an inner second insulating layer wound on the low-voltage winding die, an interlayer second insulating layer wound on two sides of the middle copper foil, an outer insulating layer wound on the outer side surface of the outer copper foil and a reinforced second insulating layer, the outer surface of the low-voltage winding is wrapped by the second insulating layer for three layers and then is wrapped by a half-overlapping layer by a hot-drying shrinkage tape, the reinforced second insulating layers are respectively arranged at the starting end and the tail end between the copper bar and the inner second insulating layer, the reinforced second insulating layer is additionally arranged between the lead bar in the low-voltage winding and the adjacent turns, the lower end parts of the two lead bars in the low-voltage winding, The lower end is 15-20 mm higher than the low-voltage copper foil.

Referring to fig. 1, 5, and 6, the above-mentioned pouring tool 4 includes a first material tank 45, a second material tank 46, a reaction chamber 41, a gate 42, and an opening/closing device, a reaction chamber for performing a resin pouring process of the high-voltage winding is provided in the reaction chamber 41, the reaction chamber 41 is provided with a feeding channel 411, the first material tank 45 and the second material tank 46 respectively convey a material into the reaction chamber through the feeding channel 411, and a communication structure between the feeding channel 411 and a pouring gate of the high-voltage winding is the same as the structure and operation of the existing pouring tool 4. The front end of the reaction chamber drives and controls the opening and closing action of the bin gate 42 through the opening and closing device; the first material tank 45 and the second material tank 46 are respectively provided with a supply pipeline 4561, a return pipeline 4562 and a stirring system 4563; when the feeding pipeline 4561 is connected with the feeding channel 11, the raw materials of the two raw material tanks are pumped to the feeding channel 411 and enter the reaction chamber through the corresponding feeding pipeline 4561, and when the feeding pipeline 4561 is disconnected from the feeding channel 411, the raw materials in the feeding pipeline 4561 flow back to the corresponding raw material tank through the corresponding return pipeline 4562; the stirring system 4563 continuously stirs the raw materials in the material tanks, and ensures that the raw materials in the two material tanks are in a continuous flowing state.

With continued reference to fig. 5, the liquid outlets of the first material tank 45 and the second material tank 46 are both disposed at the bottom of the material tanks, and the liquid inlet end of the feed pipeline 4561 is communicated with the liquid outlet; the liquid return ports of the first raw material tank 45 and the second raw material tank 46 are both arranged at the top of the raw material tanks, and the liquid outlet end of the return pipeline 4562 is communicated with the liquid return ports.

Referring to fig. 6 and 7, the opening and closing device includes a rotating frame 43 and a mounting frame 44 fixedly mounted on the top of the opening of the reaction chamber 41 of the pouring tool 4. The door handle 23 is fixedly installed on the door 42, and two or more second transparent windows 24 are installed on the door 42, so as to observe the reaction condition inside the reaction chamber 41. With continued reference to fig. 6 and 7, the rotating frame 43 includes a driving gear 431, a swing arm 432 and a connecting rod 433, the door 42 is assembled on the lower end of the connecting rod 433, specifically, the lower end of the connecting rod 433 is assembled with a pin 4331, and the center of the door 42 is assembled on the lower end of the connecting rod 433 through the pin 4331 in a manner of free rotation. With reference to fig. 6 and 7, the upper end of the connecting rod 433 is fixedly connected to the outer end of the swing arm 432, the driving gear 431 is integrally provided with a rotating shaft 434, the rotating shaft 434 extends in the vertical direction, the lower end of the rotating shaft 434 is vertically inserted into the mounting frame 44, and the upper end of the rotating shaft 434 is fixedly connected to the inner end of the swing arm 432. The mounting frame 44 includes a top frame 441 and a circular supporting ring 442, which are fixedly connected together, the top frame 441 is fixedly mounted on the top of the reaction chamber 41 and the supporting ring 442, the lower end of the rotating shaft 434 is inserted into the top frame 441, and the supporting ring 442 is fixedly mounted on the outer circumferential surface of the chamber opening of the reaction chamber 41. With reference to fig. 6 and 7, the mounting bracket 44 is fixedly mounted on a driving motor 443, a transmission gear 4431 is fixedly disposed on a power output shaft of the driving motor 443, the transmission gear 4431 is engaged with the driving gear 431 to drive the driving gear 431 to axially rotate along a rotating shaft 434, and the rotating shaft 434 drives the door 42 to open and close through a swing arm 432 and a connecting rod 433 in sequence. With continued reference to fig. 5 and fig. 6, the reaction chamber 41 is provided with a first-order observation platform 71, the first-order observation platform 71 is arranged on the left side and/or the right side of the reaction chamber 41, the supporting legs of the first-order observation platform 71 stand on the ground, and a fence is arranged on the first-order observation platform 71 in the circumferential direction; four or five or six first observation windows 410 which are equally spaced and are sequentially and alternately distributed up and down are arranged at the upper middle position of the left side wall and/or the right side wall of the reaction bin 41, and the first-order observation platform 71 is arranged below the first observation windows 410. The top of the reaction bin 41 is fixedly provided with a second-order observation platform 72, a support frame of the second-order observation platform 72 is erected on the first-order observation platform 71 and the reaction bin 41, and a fence is arranged on the periphery of the second-order observation platform 72.

With reference to fig. 6 and 7, a toothed plate 421 is fixedly disposed on an outer edge of the bin gate 42, a rotating motor 444 is fixedly disposed on the support ring 442, a rotating gear 4441 is fixedly mounted on a power output of the rotating motor 444, and the rotating motor 444 drives the bin gate 42 to rotate by a set angle through the meshing transmission of the rotating gear 4441 and the toothed plate 421. The outer edge of the bin gate 42 is fixedly provided with a limiting plate 422, the limiting plate 422 is provided with a jack 4220, the support ring 442 is fixedly provided with a limiting pin 445, and the limiting pin 445 is in contraposition insertion with the jack 4220. The insertion end of the limit pin 445 is preferably a spherical structure or a frustum structure, so that the alignment correction and the accurate and quick insertion operation of the limit pin 445 and the insertion hole 4220 are facilitated. When the limiting pin 445 and the jack 4220 are aligned and inserted, the limiting pin 445 needs to realize a telescopic action, that is, when the rotating motor 444 drives the bin gate 42 to rotate until the jack 4220 is aligned with the limiting pin 445, the limiting pin 445 extends out and then is inserted into the jack 4220 to realize the limiting and fixing of the rotation direction of the bin gate 42; when the bin gate 42 needs to be rotated, the limit pin 445 needs to be retracted to exit the insertion hole 4220, and the rotation motor 444 can drive the bin gate 42 to rotate. The telescopic action of the spacing pin 445 is preferably achieved by means of an air cylinder or hydraulic ram 446.

Continuing to refer to fig. 6 and 7, the utility model discloses an headstock gear's working method does: the limit pin 445 moves out of the insertion hole 4220, the rotating motor 444 drives the bin gate 42 to rotate, and the driving motor 443 on the mounting rack 44 operates to drive the swing arm 432, the connecting rod 433 and the bin gate 42 to synchronously rotate by taking the rotating shaft 434 as an axis, so that the bin gate 42 is gradually opened until the bin gate 42 completely leaves the bin opening of the reaction bin 41; the opening amplitude of the door 42 is controlled entirely by the operation of the drive motor 443. When the bin gate 42 is closed, the driving motor 443 drives the driving gear 431, the rotating shaft 434, the swing arm 432, the connecting rod 433 and the bin gate 42 to synchronously rotate, when the bin gate 42 is closed with the reaction bin 41, the driving motor 443 stops running, the continuous sealing and closing state of the bin gate 42 and the bin opening is kept, the rotating motor 444 runs to drive the bin gate 42 to rotate until the limiting pin 445 is in contraposition insertion connection with the insertion hole 4220, in the process, the continuous closing state of the bin gate 42 and the bin opening and the rotating action of the bin gate 42 can further discharge air, gaps and other obstacles which obstruct the sealing connection at the connection position of the bin gate 42 and the bin opening, and the closing tightness of the bin gate 42 and the bin opening of the reaction bin 41 can be effectively improved.

With continued reference to fig. 6 and 7, the opening and closing device of the bin gate 42 of the present embodiment has a simple structure, the rotating frame 43 for bearing the weight of the bin gate 42 is erected on the mounting frame 44 at the top of the bin opening of the reaction bin 41, and the mounting frame 44 is fixedly mounted on the bin opening and is independent from the bin opening, so that the influence of the load of the bin gate 42 on the reaction bin 41 can be effectively reduced, the reaction bin 41 is not easily deformed due to the load of the bin gate 42, and the stable close connection between the bin gate 42 and the reaction bin 41 is effectively ensured; in addition, after the bin gate 42 is opened by the bin gate 42 opening and closing structure, the bin gate 42 is completely separated from the reaction bin 41, so that the obstruction of the bin gate 42 to the bin opening in and out operation of the reaction bin 41 is effectively reduced, the bin gate 42 can be completely in an opening state, and the smooth and efficient in and out transportation operation of the reaction bin 41 is facilitated.

The pouring step of the pouring tool 4 is as follows:

feeding epoxy resin and a curing agent into a mixing tank according to the weight ratio of 1:1, heating to 70-80 ℃, vacuumizing and stirring for 1.5-2 h to obtain a mixture A, feeding the mixture A into a vacuum tank through a blanking valve to cast a first coil, and after the first coil is fully cast, adopting the following steps,

step 1d1, vacuumizing the vacuum tank, and standing for 25-45 min;

step 1d2, breaking the vacuum state in the vacuum tank, inflating and pressurizing to 2-3 kPa, and keeping the pressure for 20 min;

step 1d3, vacuumizing the vacuum tank, and standing for 20-30 min;

step 1d4, breaking the vacuum state in the vacuum tank, inflating and pressurizing to 2-3 kPa, keeping the pressure and standing for 20-30 min;

and step 1d5, regulating the pressure to 1kPa, and standing for 30-60 min.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims (3)

1. The production line for conveniently producing the dry-type transformer comprises a raw material bin station, a high-voltage winding tool, a low-voltage winding tool, a pouring tool, a drying tool, an assembling station and a traveling crane, wherein the traveling crane is used for conveying materials among stations; the method is characterized in that:

the raw material bin station is used for storing components and raw materials for producing the transformer;

the high-voltage winding tool comprises a winding mechanism and a copper wire mechanism, wherein the winding mechanism comprises a main frame and an auxiliary frame; the winding motor, the chuck and the driving shaft are assembled on the main frame, the chuck is fixedly assembled on a power output shaft of the winding motor, one end of the driving shaft is fixedly clamped on a bayonet of the chuck, the high-voltage winding die is sleeved on the driving shaft, and the driving shaft drives the high-voltage winding die to synchronously rotate with a fixed shaft; the auxiliary frame is provided with a shaft sleeve and an adjusting wheel, the shaft sleeve can be assembled on the auxiliary frame in a free fixed-shaft rotating mode, the other end of the driving shaft extends into the shaft sleeve, and the adjusting wheel is used for driving the shaft sleeve to move towards or depart from the driving shaft;

the copper wire mechanism comprises a base, a tensioning motor, a reduction gearbox, an installation shaft and a locking nut, wherein the tensioning motor, the reduction gearbox, the installation shaft and the locking nut are assembled on the base; the tensioning motor drives the mounting shaft to drive the copper wire coil to actively output the copper wire, and the insulated copper wire output by the copper wire coil is wound on the peripheral surface of the high-voltage winding die at a constant speed;

the low-voltage winding tool comprises a copper foil tool, an insulation tool and a winding tool which are sequentially arranged; the insulating tool comprises an insulating rack, an insulating material roll is fixedly assembled on a roll shaft on the insulating rack, the insulating rack is provided with a travelling wheel which directionally moves along the left side or the right side, and the insulating rack is inserted into or pulled out from the left side or the right side of the low-voltage winding tool to replace the insulating material roll;

the pouring tool is used for carrying out resin pouring treatment on the high-voltage winding;

the drying tool is used for drying the high-voltage winding obtained by pouring of the pouring tool and the low-voltage winding obtained by the low-voltage winding tool;

and the assembling station is used for assembling and combining the high-voltage winding, the low-voltage winding, the iron core and the connecting component thereof to obtain a finished dry-type transformer.

2. The production line for the convenient production of the dry-type transformer according to claim 1, is characterized in that: the high-voltage winding tool further comprises a fiber net mechanism; the fiber net mechanism comprises a vertical frame and a fiber roll which is rotationally assembled on the vertical frame as a fixed shaft, and the fiber net output by the fiber roll is wound on the circumferential surface of the high-voltage winding die.

3. The production line for the convenient production of the dry-type transformer according to claim 1, is characterized in that: the low-voltage winding tool further comprises a welding tool, and the welding tool comprises a mounting seat, a transverse moving motor, a welding rack, a welding arm, a welding gun, a welding motor, an upper cross beam, a welding oil cylinder, a lower cross beam and a welding clamping plate; the installation seat is fixedly provided with two first guide rails extending along the left-right direction, the welding rack is assembled on the guide rails in a limiting mode, a rack is fixed on the bottom edge of the welding rack, the transverse moving motor is fixedly assembled on the installation seat, and the transverse moving motor drives the welding rack to move to a welding station in the winding tool along the left-right direction through the meshing transmission of a matched gear; the welding rack is fixedly provided with two second guide rails which are distributed up and down and extend left and right, the welding arm is assembled on the second guide rails, the welding motor is fixedly assembled on the welding rack, a power output shaft of the welding motor is in transmission connection with a transmission screw rod fixedly assembled on the welding rack, and the welding motor drives the welding arm to directionally slide in the left and right directions through the transmission screw rod; the welding gun is fixedly assembled on the welding arm according to a set direction; the upper cross beam is fixedly assembled on the welding rack through a left connecting seat and a right connecting seat, one end of the lower cross beam is fixedly assembled on the upper cross beam through a connecting piece, and the upper cross beam, the connecting piece and the lower cross beam are connected into a whole to form a U-shaped structure with an opening facing a welding station; the welding oil cylinder is fixedly arranged on the upper cross beam in a fixed-shaft rotating mode through the first hinging seat, the welding clamp plate is fixedly arranged on the upper cross beam in a fixed-shaft rotating mode through the second hinging seat, a cylinder rod of the welding oil cylinder is hinged to the welding clamp plate, the cylinder rod of the welding oil cylinder moves in a telescopic mode to drive the welding clamp plate to swing up and down with a fulcrum of the second hinging seat, a lead row to be welded and a copper foil are fixedly clamped between the welding clamp plate and the lower cross beam in a superposed mode, and the welding gun welds the lead row and the copper foil.

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