CN106298217B - A kind of rotary transformer encapsulating device, method and its application - Google Patents

A kind of rotary transformer encapsulating device, method and its application Download PDF

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Publication number
CN106298217B
CN106298217B CN201510285450.4A CN201510285450A CN106298217B CN 106298217 B CN106298217 B CN 106298217B CN 201510285450 A CN201510285450 A CN 201510285450A CN 106298217 B CN106298217 B CN 106298217B
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China
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rotation
encapsulating
glue
becomes
casting glue
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CN201510285450.4A
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Chinese (zh)
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CN106298217A (en
Inventor
黄谷香
田奎森
彭玲
刘尚湘
黄德聪
包华羽
雷军
黄杰
谭林
唐来洲
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株洲南车机电科技有限公司
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Priority to CN201510285450.4A priority Critical patent/CN106298217B/en
Publication of CN106298217A publication Critical patent/CN106298217A/en
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Publication of CN106298217B publication Critical patent/CN106298217B/en

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Abstract

The invention discloses a kind of rotary transformer encapsulating device, method and its application, encapsulating device becomes mounting base, rotation set, encapsulating mould by the rotation being successively arranged concentrically from outside to inside, and becomes casting glue composition positioned at the rotation that rotation becomes between mounting base, encapsulating mould.Rotation becomes casting glue and uses polyamine lipid casting glue, and rotation becomes casting glue and is divided into lower part glue and top glue by rotation set.Rotation becomes casting glue and fills up rotation set, revolves the gap become between mounting base and encapsulating mould.The present invention is able to solve the technical issues of existing rotary transformer dosing technology encapsulating internal stress influence rotary transformer insulation performance, can simplify dosing technology, improves encapsulating efficiency and improve the qualification rate that rotation becomes encapsulating.

Description

A kind of rotary transformer encapsulating device, method and its application

Technical field

The present invention relates to a kind of dosing technologies, are applied to the rotation of vehicular traffic permanent magnet synchronous motor more particularly, to one kind and become The encapsulating device of depressor, method and its application.

Background technique

Currently, the development trend of rail traffic traction technique be permanent-magnet synchronous traction and control technology gradually replace it is traditional Asynchronous traction and control technology.And the important control component between permanent-magnet synchronizing traction motor and control system is --- rotation becomes Depressor (is also called " rotation becomes " for short).Can rotation become work normally will directly affect control system and work normally, and revolve change Protection needs effective measures and method, and the material and process to hold water will effectively improve the service life for revolving change and can By property.It is adopted by the rotary transformer being mounted on motor in signal acquisition source between vehicular traffic permanent magnet synchronous motor and controller Collect and obtains.The reliability of rotary transformer needs just to can guarantee using special material and technique to handle.

Common rotation will also pass through encapsulating processing before becoming use, but the performance of its encapsulating material itself is exhausted to rotation type transformer coil There are large effects for edge intensity.Meanwhile rotation change pouring method is complex, encapsulating is caused with casting glue treatment process Rotation becomes the possibility scrapped, and product encapsulating qualification rate cannot often reach ideal requirement.It is to adopt that conventional rotation, which becomes encapsulating with material, It is poor using such usual mobility of material encapsulating with epoxies casting glue, although intensity is preferable after forming and hardening, compressive resistance It is higher, but the plasticity of epoxies casting glue itself is bad, after forming and hardening with solidify front volume and have certain variation.Therefore, it adopts Rotation is become with this Embedding Material after being potted, since the volume change of Embedding Material itself forms a kind of internal stress, is answered inside It is easy to cause rotation to become unit coils insulation breakdown under the action of power, rotation is caused to become failure.The release of Embedding Material internal stress needs Certain time, rotation, which becomes, to be used after a certain period of time, because Embedding Material generates stress variation and will will lead to rotation type transformer coil insulation damages Possibility.

As shown in Fig. 1, become the structural schematic diagram of encapsulating die for rotation in the prior art, it includes: rotation that rotation, which becomes encapsulating die, Become casting glue 5, encapsulating mould riser 7, encapsulating mould runner 8, encapsulating mould mold core 9 and rotary transformer 10.Rotary transformer 10 includes Rotation becomes mounting base and rotation set.There is several several dead heads between encapsulating mould mold core 9 and rotation change stator core 1, and Casting glue in encapsulating mould runner 8 is squeezed into rotation under pressure and is become.Common rotation becomes dosing technology process are as follows: prepares encapsulating Glue-vacuumizes-revolves change, mold core position-squeezes encapsulating-solidification-and rotation sub- the pouring for iron core inner circle surface of set demould-is gone to emit Mouthful.And rotation commonly used in the prior art becomes encapsulating post-processing approach after rotation sells of one's property the forming of product encapsulating, exists since encapsulating generates Riser and runner in residual gum, and be integrated with product shaping, and these residual gums be do not allow it is existing, it is common to handle Method is removed using machining process.The casting glue of the prior art uses epoxy glue, and composition determines that rotation becomes and fills Mobile performance when envelope.If mold does not design sufficiently large dead head, there can be mass defect in glue after encapsulating forming, Such as: there is a situation where that stomata or glue fill discontented.The dosing technology of the prior art can be deposited on revolving the contact surface for exchanging work part and mold A large amount of casting glue is stayed, therefore can also be added extra glue using machinery after glue forming there are machining allowance on encapsulating face Work is removed.

For the service life and reliability for improving rail traffic permanent magnetism trailer system, Lifting Control System critical component-rotation The service life and reliability of change are the key points being even more important, and rotation becomes dosing technology and selection directly affects rotation change and uses the longevity Life and reliability.Therefore, it researches and develops the new rotation of one kind and becomes dosing technology and Embedding Material as technical problem currently urgently to be resolved.

Summary of the invention

In view of this, the purpose of the present invention is to provide a kind of rotary transformer encapsulating device, method and its application, it can The technical issues of solving existing rotary transformer dosing technology encapsulating internal stress influence rotary transformer insulation performance, can simplify Dosing technology improves encapsulating efficiency, improves the qualification rate that rotation becomes encapsulating.

In order to achieve the above-mentioned object of the invention, the technology that the present invention specifically provides a kind of rotary transformer encapsulating device is realized Scheme, rotary transformer encapsulating device become mounting base, rotation set, encapsulating mould by the rotation being successively arranged concentrically from outside to inside, with And become casting glue composition positioned at the rotation that the rotation becomes between mounting base, encapsulating mould.The rotation is become casting glue and is filled using polyamine lipid Sealing, the rotation become casting glue and are divided into lower part glue and top glue by rotation set.The rotation change casting glue fills up described Revolve set, rotation becomes the gap between mounting base and the encapsulating mould.

Preferably, the rotation set attached bag includes rotation and becomes stator core and the rotation set that the rotation becomes in stator core is arranged in Subcoil.The rotation becomes casting glue and fills up the rotation change stator core, rotation set subcoil, rotation change mounting base and the encapsulating mould Between gap.

Preferably, the encapsulating mould uses riser-free, the cylindrical structure without runner.

In addition the present invention also specifically provides a kind of technic relization scheme of rotary transformer encapsulating method, rotary transformer Encapsulating method, comprising the following steps:

S100: prepare rotation and become casting glue;

S101: rotation change casting glue is vacuumized;

S102: mounting base is become to rotation and is positioned with encapsulating mould, and becomes between mounting base and encapsulating mould in the rotation and pours into Rotation becomes casting glue, to form lower part glue;

S103: become between mounting base and encapsulating mould in the rotation and be pressed into rotation set;

S104: continue to become between mounting base, encapsulating mould and rotation set to pour into revolve in the rotation to become casting glue, on being formed Portion's glue;

S105: curing process is carried out to the rotary transformer for becoming casting glue encapsulating by the rotation;

S106: demoulding the rotary transformer Jing Guo curing process, removes encapsulating mould;

S107: cleaning rotation becomes the glue film of stator core inner ring.

Preferably, it further comprises becoming casting glue to the rotation to carry out that the rotation of the step S100, which becomes casting glue preparation process, The step of quantitative weighing.

Preferably, the rotation becomes the polyurethane material that casting glue uses two-component.

Preferably, the step S107 is further are as follows: is wiped using cleaning cloth, becomes stator core inner ring to remove the rotation Glue film thin layer.

In addition the present invention also specifically provides a kind of encapsulating method as described above in production permanent magnet synchronous motor rotation transformation Application in device.

In addition the present invention also specifically provides a kind of encapsulating method as described above in production rail traffic vehicles permanent-magnet synchronous Application in motor rotary transformer.

By implementing rotary transformer encapsulating device, the method and its application that aforementioned present invention provides, have following beneficial Effect:

(1) present invention is not only able to meet dosing technology using polyurethane material as rotary transformer Embedding Material Requirement, while can also be filled with enough rotation and become the requirement that uses, overcome common Embedding Material caused internal stress itself and rotation is become The influence of coil dielectric strength;

(2) this invention simplifies rotations to become dosing technology, after the forming of product encapsulating, without extra casting glue cast gate and riser, The surface that product is not required to encapsulating only has one layer of very thin glue film, need to only use clean rag, the place of glue after encapsulating forming Reason is convenient, and rotation will not be caused to become because of dealing with improperly and scrapped, the qualification rate and production efficiency of encapsulating are improved;

(3) not only mobility and mouldability are preferable for the Embedding Material that the present invention uses, while body after material forming and hardening Product is substantially unchanged, and plasticity is preferable, has good insulating properties and resistance to shock.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described.It should be evident that the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Other embodiments are obtained according to these attached drawings.

Fig. 1 is the structural schematic diagram of prior art rotary transformer encapsulating die;

Fig. 2 is a kind of structural schematic diagram of specific embodiment of rotary transformer encapsulating device of the present invention;

Fig. 3 is the structural schematic diagram by rotary transformer encapsulating method of the present invention treated rotary transformer;

Fig. 4 is the structural representation of the rotary transformer intermediate steps handled by rotary transformer encapsulating method of the present invention Figure;

Fig. 5 is a kind of schematic perspective view of specific embodiment of rotary transformer encapsulating device of the present invention;

Fig. 6 is the schematic perspective view by rotary transformer encapsulating method of the present invention treated rotary transformer;

Fig. 7 is the assembling structure schematic diagram by rotary transformer encapsulating method of the present invention treated rotary transformer;

In figure: 1- rotation becomes stator core, 2- encapsulating mould, and 3- rotation becomes mounting base, and 4- rotation becomes rotor, and 5- rotation becomes casting glue, 6- Revolve set subcoil, 7- encapsulating mould riser, 8- encapsulating mould runner, 9- encapsulating mould mold core, 10- rotary transformer, the side 11- lid, 12- Knob, the lower part 51- glue, the top 52- glue.

Specific embodiment

For the sake of quoting and understanding, will hereafter used in technical term, write a Chinese character in simplified form or abridge and be described below:

Rotation becomes: i.e. the abbreviation of rotary transformer, is signal between a kind of realization permanent magnetism control system and permanent magnet synchronous motor The connector of transmitting;

Embedding Material: generalling use organic insulating material, is liquid before multiple groups part is unmixed, mixes according to a certain percentage Afterwards, it can be solidified into solid under certain conditions;

Dosing technology: consolidate again after being contained to need part to be protected using other flowable insulating materials Change, makes a kind of technique protected by guard member;

Rotation becomes encapsulating: being contained using Embedding Material to rotation set subcoil, shape as required is solidified, and is made It can not influenced with better insulation performance by external environment vibration, aqueous vapor at work;

Internal stress: substance is formed by a kind of stress since own vol changes under certain condition, he it one It disappears under conditions of fixed, if internal stress is greater than the surface tension for being in contact with it substance, contact material surface will be in internal stress Under the action of destroy.

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment is only It is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field Art personnel every other embodiment obtained without creative efforts belongs to the model that the present invention protects It encloses.

As shown in attached drawing 2 to attached drawing 7, give rotary transformer encapsulating device of the present invention, method and its application it is specific Embodiment, the present invention will be further explained below with reference to the attached drawings and specific examples.

Embodiment 1

As shown in attached drawing 2 and attached drawing 5, a kind of specific embodiment of rotary transformer encapsulating device, encapsulating device is by from outer Become mounting base 3, rotation set, encapsulating mould 2 to the interior rotation being successively arranged concentrically, and be located at rotation become mounting base 3, encapsulating mould 2 it Between rotation become casting glue 5 form.Rotation becomes casting glue 5 and uses polyamine lipid casting glue, and rotation becomes casting glue 5 and is divided by rotation set Lower part glue 51 and top glue 52.Rotation becomes casting glue 5 and fills up rotation set, revolves the gap become between mounting base 3 and encapsulating mould 2.It fills It seals mould 2 and further uses riser-free, the cylindrical structure without runner.As a kind of typical specific embodiment of the present invention, fill The upper edge of envelope mould 2 is further provided with mobilizable side lid 11, and the top of encapsulating mould 2 is further provided with knob 12。

As shown in attached drawing 3,6 and 7, wrapped by rotary transformer encapsulating method of the present invention treated rotary transformer 10 Include: rotation change mounting base 3, rotation set, rotation, which become rotor 4 and revolve, becomes casting glue 5.Rotation becomes mounting base 3, rotation set and rotation and becomes rotor 4 are successively arranged concentrically from outside to inside, and rotation set further comprises that rotation change stator core 1 and setting become in stator core 1 in rotation Rotation set subcoil 6.Rotation change casting glue 5 fills up rotation and becomes stator core 1, rotation set subcoil 6, rotation change mounting base 3 and encapsulating Gap between mould 2.Insertion rotation change composition rotation set of stator core 1 of set subcoil 6 is revolved, rotation change casting glue 5 fills up rotation and becomes Stator core 1, rotation set subcoil 6, rotation become the gap between mounting base 3, fully ensured that rotation set subcoil 6 it is inclusive and It is not influenced by outside air or other environment.

The polyurethanes rotation that the rotary transformer encapsulating device of the above-mentioned specific embodiment description of the present invention uses becomes encapsulating material Material is not only able to meet the requirement of dosing technology in performance, while can also be filled with enough the requirement of rotary transformer.Polyurethane Class casting glue will be got well, material forming and hardening compared with epoxies casting glue in terms of the mobility of Embedding Material and mouldability Volume is substantially unchanged afterwards, and plasticity is preferable, vibration resistance is stronger.Meanwhile the mold design of rotary transformer encapsulating device of the present invention It can also more simplify with dosing technology, the processing method of glue also very simple after encapsulating, will not be made because of casting glue processing Become the possibility of failure at rotation, therefore the qualification rate for revolving change encapsulating is higher.The rotary transformer of specific embodiment of the invention description fills Seal apparatus passes through in various rail traffic vehicles, if entrucking is on probation on EMU velocity sensor, cell winding almost without Because there is a phenomenon where destroy for casting glue internal stress.

Embodiment 2

A kind of specific embodiment of the rotary transformer encapsulating method based on device as described above, comprising the following steps:

S100: prepare rotation and become casting glue 5;As a kind of typical specific embodiment of the present invention, it is further that rotation becomes casting glue 5 Using the polyurethane material of two-component;

S101: rotation is become into casting glue 5 and is vacuumized;

S102: mounting base 3 is become to rotation and is positioned with encapsulating mould 2, and becomes between mounting base 3 and encapsulating mould 2 in rotation and pours into Rotation becomes casting glue 5, to form lower part glue 51, as shown in Fig. 4;

S103: become indentation rotation set between mounting base 3 and encapsulating mould 2 in rotation;

S104: continuation becomes between mounting base 3, encapsulating mould 2 and rotation set to pour into revolve in rotation becomes casting glue 5, on being formed Portion's glue 52;

S105: curing process is carried out to the rotary transformer 10 for becoming 5 encapsulating of casting glue through overwinding;

S106: demoulding the rotary transformer 10 Jing Guo curing process, removes encapsulating mould 2;

S107: cleaning rotation becomes the glue film of 1 inner ring of stator core.

As a kind of preferable specific embodiment of the present invention, the rotation of step S100 becomes 5 preparation process of casting glue and further wraps It includes and the step of casting glue 5 carries out quantitative weighing is become to rotation.Since the rotary transformer of the above-mentioned specific embodiment description of the present invention fills Seal apparatus does not include encapsulating mould riser 7 and encapsulating mould runner 8, thus revolve become casting glue 5 dosage be it is fixed controllable, this just into One step avoids rotation and becomes the waste of casting glue 5, while also ensuring that rotation becomes the consistency after casting glue 5 solidifies.

As a kind of typical specific embodiment of the present invention, step S107 is further are as follows: is wiped using cleaning cloth, with removal Rotation becomes the glue film thin layer of 1 inner ring of stator core.

Embodiment 3

A kind of application of encapsulating method as described above in production rotating transformer of permanent magnet synchronous motor.

Embodiment 4

A kind of application of encapsulating method as described above in production rail traffic vehicles rotating transformer of permanent magnet synchronous motor.

The rotary transformer encapsulating method simple process of the above-mentioned specific embodiment description of the present invention, and encapsulating is become for rotation Processing method afterwards is more easy.After the forming of rotary transformer product encapsulating, there is no extra casting glue cast gate and riser, The surface that product is not required to encapsulating only has one layer of very thin glue film, and processing glue film need to only be wiped with clean cleaning cloth. Meanwhile rotary transformer dosing technology of the invention uses polyamine lipid casting glue, mobility is preferable, fills without impressed pressure Envelope, without residualinternal stress after encapsulating adhesive curing, or only minimum stress and be not enough to influence rotation set subcoil insulating layer itself Adhesive strength.And tradition in the prior art is using epoxies casting glue with glue, mobility is poor, dosing technology is complicated, And impressed pressure ability encapsulating is needed, there are biggish residualinternal stresses after encapsulating adhesive curing.

By implementing rotary transformer encapsulating device, the method and its application of specific embodiment of the invention description, Neng Gouda To following technical effect:

(1) the rotary transformer encapsulating device of specific embodiment of the invention description, method use polyurethane material conduct Rotary transformer Embedding Material is not only able to meet the requirement of dosing technology, while can also be filled with enough rotation and become the requirement used, overcomes Influence of the caused internal stress of common Embedding Material to rotation type transformer coil dielectric strength itself;

(2) the rotary transformer encapsulating device of specific embodiment of the invention description, method simplify rotation change dosing technology, produce After the forming of product encapsulating, without extra casting glue cast gate and riser, the surface that product is not required to encapsulating only has one layer of very thin glue film, nothing The die joint for needing machined die and rotation to become, need to only be wiped clean with clean rag, the processing of remaining glue after encapsulating forming It is convenient, rotation will not be caused to become because of dealing with improperly and scrapped, the qualification rate and production efficiency of encapsulating are improved;

(3) Embedding Material that the rotary transformer encapsulating device of specific embodiment of the invention description, method use not only flows Dynamic property and mouldability will preferably, while volume is substantially unchanged after material forming and hardening, and plasticity is preferable, has good insulating properties And resistance to shock, it ensure that rotation becomes using required comprehensive performance requirement;

(4) the rotary transformer encapsulating device of specific embodiment of the invention description, method are applied to field of track traffic, energy The service life and reliability of enough effective Lifting Control System critical components, to greatly improve rail traffic permanent magnetism trailer system Safety, reliability and service life.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.

The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form.Though So the present invention is disclosed as above with preferred embodiment, and however, it is not intended to limit the invention.It is any to be familiar with those skilled in the art Member, in the case where not departing from Spirit Essence of the invention and technical solution, all using in the methods and techniques of the disclosure above Appearance makes many possible changes and modifications or equivalent example modified to equivalent change to technical solution of the present invention.Therefore, Anything that does not depart from the technical scheme of the invention are made to the above embodiment any simple according to the technical essence of the invention Modification, equivalent replacement, equivalence changes and modification, all of which are still within the scope of protection of the technical scheme of the invention.

Claims (7)

1. a kind of rotary transformer encapsulating method, which comprises the following steps:
S100: preparing rotation and become casting glue (5), and the rotation becomes the polyurethane material that casting glue (5) use two-component;
S101: rotation change casting glue (5) is vacuumized;
S102: becoming mounting base (3) to rotation and position with encapsulating mould (2), and becomes mounting base (3) and encapsulating mould (2) in the rotation Between pour into rotation become casting glue (5), to form lower part glue (51);
S103: become between mounting base (3) and encapsulating mould (2) in the rotation and be pressed into rotation set;
S104: continuing to pour into revolve between rotation change mounting base (3), encapsulating mould (2) and rotation set to become casting glue (5), with It is formed top glue (52);
S105: curing process is carried out to the rotary transformer (10) for becoming casting glue (5) encapsulating by the rotation;
S106: demoulding the rotary transformer (10) Jing Guo curing process, removes encapsulating mould (2);
S107: cleaning rotation becomes the glue film of stator core (1) inner ring.
2. rotary transformer encapsulating method according to claim 1, it is characterised in that: the rotation of the step S100 becomes encapsulating Glue (5) preparation process further comprises becoming the step of casting glue (5) carry out quantitative weighing to the rotation.
3. rotary transformer encapsulating method according to claim 1 or 2, which is characterized in that the step S107 is further Are as follows: it is wiped using cleaning cloth, to remove the glue film thin layer that the rotation becomes stator core (1) inner ring.
4. a kind of rotary transformer encapsulating device of the production of method according to any one of the claim 1 to 3, it is characterised in that: The encapsulating device becomes mounting base (3), rotation set, encapsulating mould (2) by the rotation being successively arranged concentrically from outside to inside, and is located at The rotation that the rotation becomes between mounting base (3), encapsulating mould (2) becomes casting glue (5) composition;The rotation becomes casting glue (5) and uses polyamine Lipid casting glue, the rotation become casting glue (5) and are divided into lower part glue (51) and top glue (52) by rotation set;The rotation Set attached bag includes rotation and becomes the rotation set subcoil (6) that stator core (1) and setting become in the rotation on stator core (1);It is described It revolves change casting glue (5) and fills up rotation change stator core (1), rotation set subcoil (6), rotation change mounting base (3) and the encapsulating Gap between mould (2) fully ensures that the rotation set subcoil (6) is inclusive without being influenced by outside air.
5. rotary transformer encapsulating device according to claim 4, it is characterised in that: the encapsulating mould (2) is poured using nothing Riser, the cylindrical structure without runner.
6. a kind of encapsulating method as described in any one of claims 1 to 3 answering in production rotating transformer of permanent magnet synchronous motor With.
7. one kind encapsulating method as described in any one of claims 1 to 3 is rotated in production rail traffic vehicles permanent magnet synchronous motor Application in transformer.
CN201510285450.4A 2015-05-29 2015-05-29 A kind of rotary transformer encapsulating device, method and its application CN106298217B (en)

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CN110428961A (en) * 2019-08-06 2019-11-08 苏州工业园区代尔塔电机技术有限公司 A kind of encapsulating structure and method of Wound-rotor type rotary transformer rotor

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