CN101610018B - Compression molding method of motor frame coils - Google Patents
Compression molding method of motor frame coils Download PDFInfo
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- CN101610018B CN101610018B CN2009100689259A CN200910068925A CN101610018B CN 101610018 B CN101610018 B CN 101610018B CN 2009100689259 A CN2009100689259 A CN 2009100689259A CN 200910068925 A CN200910068925 A CN 200910068925A CN 101610018 B CN101610018 B CN 101610018B
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- insulation
- nose
- coil
- compression molding
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Abstract
The invention relates to a compression molding method of motor frame coils, belonging to the technical field of motor coils. The method is as follows: main earth insulation compression molding is carried out on the coils undergoing turn-to-turn insulation after compression. The method comprises the following processing steps: 1) primary nose enveloping and lead insulation: enveloping the 1/2 part out of the lead nose insulation by a layer of polyester film; 2) main insulation enveloping: on an enveloping machine, clamping the noses at both ends by an air clamp and winding the noses by half with 1/2 of a mica tape; 3) secondary nose enveloping and lead insulation: removing the polyester film protective tape on the lead nose and carrying out secondary nose enveloping and lead insulation; 4) anti-corona structure treatment; 5) upper end splinting: flat enveloping a layer of polytetrafluoroethylene tape outside, using an iron splint to go along with the noses at the ends and to cling to the coil nose end, flattening the iron splint and fixing the iron splint by an adhesive tape; 6) earth insulation cure molding: preheating the coils for 30-40min and then carrying out compression molding. The method is simple in process, avoids coil earth breakdown and effectively improves insulated electrical properties.
Description
Technical field
The invention belongs to the motor coil technical field, particularly relate to a kind of compression molding method of motor frame coils.
Background technology
At present, the box coil of existing through-flow unit design, coil quantity is many, span is little, the end is short, coil insulation is thin, improved decrement, brought very hang-up for the coil manufacturing process, the coil puncture rate over the ground height after the compression molding can appear in this coil in molding die process technique, influence the coil insulation quality, cause a large amount of waste of raw materials simultaneously.
Summary of the invention
The technical problem of the present invention for existing in the solution known technology, and a kind of compression molding method of motor frame coils is provided.
It is simple to the purpose of this invention is to provide a kind of technology, can avoid coil punch-through over the ground, the compression molding method of motor frame coils that the insulation electrical performance is improved.
The technical scheme that the present invention takes is:
A kind of compression molding method of motor frame coils has been pressed the coil after the turn-to-turn insulation, carries out main insulation compression molding over the ground, is characterized in: box coil mold pressing processing comprises following processing step,
1) nose of bag and lead wire insulation
Press the electrical machine insulation standard, lead-in wire nose insulation outside 1/2 bag polyester film one deck, nose insulation protection during as the machine bag;
2) main insulation wrapping
Coil is put on the bundling machine, and the two ends nose clamps with air-actuated jaw, carries out smooth evenly tight mica tape 1/2 half-lap on belting machine;
3) bag secondary nose and lead wire insulation
The machine bag finishes, and the polyester film boundary belt of the lead-in wire nose of dismantling is pressed electrical machine insulation standard wrapping secondary nose and lead wire insulation;
4) anti dizzy structure is handled
The wrapping of box coil main insulation finishes, and carries out anti-corona processing;
5) upper end clamping plate
The anti-corona coil of handling, outside flat bag one deck teflin tape is as demoulding usefulness, and end nose position is close to coil nose portion with the iron splint retinue, beats out, and adhesive tape is fixed; Behind outer flat bag one deck teflin tape, its pile tightly shunk with contraction bands;
6) insulation against ground curing molding
The coil preheating after 30-40 minute, is carried out compression molding.
The present invention can also adopt following technical measures:
Described compression molding method of motor frame coils is characterized in: during the clamping plate of upper end, end nose position is close to coil nose portion with the retinue of 0.5mm iron splint, beats out gently with wooden mallet.
Described compression molding method of motor frame coils is characterized in: during the main insulation wrapping, and mica tape 1/2 half-lap, every layer of staggered wrapping.
Described compression molding method of motor frame coils is characterized in: during the insulation against ground curing molding, the pre-thermal recovery of box coil adds hot method mode, and the solidification process of coil is by coil surface conductive coil inside.
Advantage that the present invention has and good effect:
Compression molding method of motor frame coils adopts technical solution of the present invention, thereby has following characteristics:
1) coil insulation intensity improves, and puncture rate over the ground descends.
2) set up the wrapping qualifying point, guarantee the wrapping quality, the insulation electrical performance is good.
3) sectional dimension is accurate, has reduced the mechanical damage of bringing because of rolling off the production line.
4) energy-saving and cost-reducing, reduced the coil cost of manufacture.Dwindle motor effectively and made the space, saved copper conductor, improved production efficiency.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now also in conjunction with the accompanying drawings, be described in detail as follows:
Embodiment 1
A kind of compression molding method of motor frame coils has been pressed the coil after the turn-to-turn insulation, and on the main insulation die press technology for forming, its box coil molding die process technique comprises over the ground:
1. wrap nose and lead wire insulation operation
Carry out nose insulation protection when lead-in wire nose insulation outside 1/2 is wrapped polyester film one deck as the machine bag by the electrical machine insulation code requirement.
2. main insulation is wrapped up operation
Coil is put on the bundling machine, and the two ends nose clamps with air-actuated jaw, the rotating speed of belting machine and when walking vehicle speed and should guarantee mica tape 1/2 half-lap smooth evenly, every layer of staggered wrapping is closely.Guarantee the wrapping quality and the number of plies according to technological requirement decrement size.Particularly straight line corner packs tightly in order to avoid fold occurs during die mould, and overhang insulation is sent out sky, influences mass of coil.
3. wrap secondary nose and lead wire insulation operation
The machine bag finishes, and the polyester film boundary belt of the lead-in wire nose of dismantling is pressed the wrapping of electrical machine insulation standard.
4. anti dizzy structure treatment process
The wrapping of box coil main insulation finishes, and is undertaken by anti-corona processing specification.
5. upper end clamping plate operation.
With the coil that anti dizzy structure is handled, outside flat bag one deck teflin tape is as demoulding usefulness, and end nose position is close to coil nose portion with the retinue of 0.5mm iron splint, beats out gently with wooden mallet, and adhesive tape is fixed.Behind outer flat bag one deck teflin tape, with the tight contraction of its pile, avoid the end that fold or uneven defective are arranged, influence presentation quality with contraction bands.
6. insulation against ground curing molding operation
The coil preheating after 30-40 minute, is adjusted temp controlled meter and process time on the control cubicle, carry out compression molding.
7. finished product detection operation
JB/T6204-92 detects by national standard.
Sectional dimension is controlled at the above wrapping main insulation thickness that guarantees of minus tolerance scope-0.2-0.4 between the present embodiment thigh.R place, topotype straight line turning is considered that interior angle thickens, and place, R angle considers that allowance is 0.3-0.5mm during design.When avoiding die mould four jiaos stressed, insulation harm causes over the ground and to puncture.The box coil mode of heating adopts outer heating, and the solidification process of coil is by coil surface conductive coil inside.The actual temperature of control mould is crucial.Having controlled Control of Electric Oven Temperature table temperature is the key point that guarantees coil main insulation curing quality with actual measurement stove inner mold temperature difference.
The concrete detailed process flow of present embodiment is as follows:
One, preparatory process before the insulation wrapping
A. used material
1) semi-finished product coil
2) F level paulownia horse mica tape
B. used tool
1) coil transportation special-purpose vehicle
2) bundling machine
3) workbench
4) scissors
C. making step and method
1) in freezer, takes out mica tape use after normal temperature is placed 12 hours with special-purpose handcart.
2) the semi-finished product coil is piled up before bundling machine on the workbench.
3) adjust bundling machine by the design drawing requirement
Form because the track of box coil bundling machine is a chain, can at will adjust span angle and straight length.Adjustment finishes its fillet R place is fixed.
Two, wrapping operation
A. used material
1) preceding operation coil
2) mica tape
3) polyester film contraction bands
4) teflin tape
5) white glove
B. used tool
1) bundling machine
2) scissors
3) microwave oven
C. making step and method
1) nose of bag and lead wire insulation
Undertaken by the electrical machine insulation standard.The lead-in wire nose wrap up insulation back outsourcing one deck polyester film contraction bands as protection, insulate in order to avoid damage nose during the machine bag.
2) wrapping main insulation
A) coil two ends nose is clamped with air-actuated jaw.
B) start the bundling machine switch, the belting machine rotating speed on the bundling machine and walk vehicle speed and guarantee that mica tape 1/2 half-lap is smooth evenly, closely no wrinkle.Wrap up by the technological requirement decrement, guarantee the wrapping number of plies.
3) bag secondary nose and lead wire insulation
Remove the polyester film boundary belt of lead-in wire nose.Handbag nose when insulation, must be strict even, pack tightly by the technological requirement bag, guarantee that every layer of half-lap take mistake and carry out.
Three, anti-corona treatment process
A. used material
1) preceding operation coil
2) solidify the low resistance band entirely
3) solidify the high resistance band entirely
B. used tool
1) scissors
2) model is made in high and low resistance
3) chalk
C. making step and method:
1) undertaken by anti-corona processing specification.After being the main insulation wrapping, wrap corona-prevention belt with the main insulation curing molding in its outside.
Four, upper end clamping plate operation
A. used material:
1) preceding operation coil
2) 0.5mm galvanized iron
3) teflin tape
B. used tool
1) scissors
2) sticker bar
3) wooden mallet
C. making step and method:
1) by coil-end nose shape, 0.5mm galvanized iron is cut out in retinue, as end nose iron splint.
2) the 0.5mm galvanized iron clamping plate that will cut out are fixed on the coil nose outside with the sticker band, with wooden mallet clap gently the retinue apply ointment or plaster at the coil-end nose, fix with adhesive tape, outside flat bag one deck teflin tape, pile up tightly with the polyester film contraction bands then, when avoiding die mould, fold or defective such as uneven appear in the end nose, influence presentation quality.
Five, compression molding operation
A. used material:
1) goes up the one procedure coil
B. used tool
1) electric furnace
2) press-moulding die over the ground
C. making step and method
1) wrap over the ground coil before, to repairing more than 12 hours in 200 ℃ of bakers of topotype brush silicone varnish one omnipresence, demoulding is used when making things convenient for die mould.
2) adjust temp controlled meter on the control cubicle.
A) coil is placed in 130 ℃ of some stoves preheating 30-40 minute.
B) coil that finishes of preheating is put into 185 ℃ ± 5 ℃ electric furnaces to topotype, compresses with the card orchid to add first pressing and push in the electric furnace about 5-10 minute and add total head.Must be noted that tight mould order and time, make straight line position each point stressed evenly, avoid paulownia horse solation amount excessive or too small.
C) after coil has been pressed, remove teflin tape, rapidly the surplus glue on the coil is removed, put into cooling and shaping mould typing cooling.
Six, detect operation
A. used material
1) preceding operation coil
B. used tool
1) special-purpose electrical detection facility
2) iron core anchor clamps
C. making step and method
By one minute initial corona voltage standard ordering in GB GB/T7894-2001 " requirement of hydraulic turbine basic fundamental " and our company, root a tree name drawing requires electric pressure 2.75U+4.5 test or 2.75U+6.5.
Claims (4)
1. compression molding method of motor frame coils has been pressed the coil after the turn-to-turn insulation, carries out main insulation compression molding over the ground, and it is characterized in that: box coil mold pressing processing comprises following processing step:
1) nose of bag and lead wire insulation
Press the electrical machine insulation standard, lead-in wire nose insulation outside 1/2 bag polyester film one deck, nose insulation protection during as the machine bag;
2) main insulation wrapping
Coil is put on the bundling machine, and the two ends nose clamps with air-actuated jaw, carries out smooth evenly tight mica tape 1/2 half-lap on bundling machine;
3) bag secondary nose and lead wire insulation
The machine bag finishes, and the polyester film boundary belt of the lead-in wire nose of dismantling is pressed electrical machine insulation standard wrapping secondary nose and lead wire insulation;
4) anti dizzy structure is handled
The wrapping of box coil main insulation finishes, and carries out anti-corona processing;
5) upper end clamping plate
The anti-corona coil of handling, outside flat bag one deck teflin tape is used as demoulding; Hold the nose position to be close to coil nose portion with the iron splint retinue, beat out, adhesive tape is fixed, and behind outer flat bag one deck teflin tape, with contraction bands its pile is tightly shunk;
6) insulation against ground curing molding
The coil preheating after 30-40 minute, is carried out compression molding.
2. compression molding method of motor frame coils according to claim 1 is characterized in that: during the clamping plate of upper end, end nose position is close to coil nose portion with the retinue of 0.5mm iron splint, beats out with wooden mallet.
3. compression molding method of motor frame coils according to claim 1 is characterized in that: during the main insulation wrapping, and mica tape 1/2 half-lap, every layer of staggered wrapping.
4. compression molding method of motor frame coils according to claim 1 is characterized in that: during the insulation against ground curing molding, the pre-thermal recovery of box coil adds hot method mode, and the solidification process of coil is by coil surface conductive coil inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100689259A CN101610018B (en) | 2009-05-19 | 2009-05-19 | Compression molding method of motor frame coils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100689259A CN101610018B (en) | 2009-05-19 | 2009-05-19 | Compression molding method of motor frame coils |
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| CN101610018A CN101610018A (en) | 2009-12-23 |
| CN101610018B true CN101610018B (en) | 2011-05-11 |
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| CN2009100689259A Expired - Fee Related CN101610018B (en) | 2009-05-19 | 2009-05-19 | Compression molding method of motor frame coils |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814782A (en) * | 2010-04-30 | 2010-08-25 | 天津市天发重型水电设备制造有限公司 | Anti-corona processing method of coil of stator of motor |
| CN101860137B (en) * | 2010-04-30 | 2012-07-18 | 天津市天发重型水电设备制造有限公司 | Reshaping and processing method of wrapping and winding motor ring-type coil |
| CN101814806B (en) * | 2010-04-30 | 2012-06-20 | 天津市天发重型水电设备制造有限公司 | Die pressing method of frame-shaped coil of motor |
| CN102364840B (en) * | 2011-07-01 | 2013-07-17 | 哈尔滨电机厂有限责任公司 | Method for manufacturing stator bar of air-cooling 200MW steam turbogenerator |
| CN102510185A (en) * | 2011-11-08 | 2012-06-20 | 天津市天发重型水电设备制造有限公司 | Method for molding end nose part insulators of stator coil of generator |
| CN104362819B (en) * | 2014-11-04 | 2019-01-04 | 天津市天发重型水电设备制造有限公司 | A kind of coil type winding turn-to-turn insulation processing technology |
| CN113489262A (en) * | 2021-07-20 | 2021-10-08 | 上海电气集团上海电机厂有限公司 | Stator coil manufacturing process |
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| CN1929248A (en) * | 2006-08-31 | 2007-03-14 | 施之英 | Method for twining VPI corona-prevention layer between stator coil main insulating layer and corona-prevention layer |
| CN101257230A (en) * | 2007-12-21 | 2008-09-03 | 哈尔滨电机厂有限责任公司 | Method for manufacturing enhanced type one-shot forming anti dizzy structure of high voltage large-sized electricity generator stator coil |
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| CN1929248A (en) * | 2006-08-31 | 2007-03-14 | 施之英 | Method for twining VPI corona-prevention layer between stator coil main insulating layer and corona-prevention layer |
| CN101257230A (en) * | 2007-12-21 | 2008-09-03 | 哈尔滨电机厂有限责任公司 | Method for manufacturing enhanced type one-shot forming anti dizzy structure of high voltage large-sized electricity generator stator coil |
| CN101355270A (en) * | 2008-09-18 | 2009-01-28 | 天津市天发重型水电设备制造有限公司 | Halo-proof structure for motor stator coil and processing method thereof |
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| CN101610018A (en) | 2009-12-23 |
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