CN218384613U - Flat insulated wire preparation system - Google Patents
Flat insulated wire preparation system Download PDFInfo
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- CN218384613U CN218384613U CN202222346603.XU CN202222346603U CN218384613U CN 218384613 U CN218384613 U CN 218384613U CN 202222346603 U CN202222346603 U CN 202222346603U CN 218384613 U CN218384613 U CN 218384613U
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- enameled wire
- enameled
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Abstract
The utility model provides a flat insulated wire preparation system, which comprises a flat enameled wire manufacturing device which is arranged along the conveying direction of a flat enameled wire in sequence; the surface roughening device is used for roughening the surface of the flat enameled wire; the preheating device is used for preheating the flat enameled wire before plastic coating; the plastic coating device is used for coating the resin layer on the flat enameled wire to obtain an insulated wire; and a cooling device for cooling the insulated wire and controlling crystallization of the resin layer. The utility model provides an insulated wire preparation system, surface roughening device wherein carries out roughening treatment to the surface of flat enameled wire, improves the adhesion between follow-up resin and flat enameled wire; the preheating device controls the preheating temperature to prevent air bubbles from being generated between the resin and the flat enameled wire, then the resin material is coated and cooled to crystallize the resin material, and finally the insulated wire with the resin layer and the flat enameled wire tightly adhered is obtained.
Description
Technical Field
The utility model relates to an insulated wire preparation field, concretely relates to flat insulated wire preparation system.
Background
Insulated wires for small high frequency transformers and motors are currently generally produced using a polymer coated layer produced by a process for the production of enamelled wires, which release a large amount of solvent. Another problem with enamelled wire is the continuous integrity of the insulating coating, which is difficult to achieve because of the pin-hole problem of the varnish film.
Further improvement in various performances such as heat resistance, mechanical performance, chemical performance, electrical performance, and reliability of electric equipment developed in recent years has been demanded as compared with conventional electric equipment. The insulated wire used for the driving motor of the electric automobile is realized year by year due to the size reduction and high output, and the insulated wire not only requires the electrical, mechanical and performance of the insulating material used for the traditional motor, but also puts higher requirements on the insulating material and an insulating system used for the driving motor of the electric automobile, namely the insulated wire has excellent corona resistance, mechanical performance (high bonding strength), heat resistance (the heat resistance level is not less than 180 ℃), high heat conductivity, ATF oil or water resistance, halogen-free flame retardant performance and high and low temperature impact resistance. In the case of some specific devices, the high temperature inside the electric vehicle drive motor exceeds 200 ℃, and at such a high temperature, the coating resin layer of the insulated electric wire used in the equipment is thermally aged, resulting in thermal shrinkage. When the thermal shrinkage of the coated resin layer is increased, the coated resin layer cannot withstand the thermal shrinkage stress, resulting in cracking. Therefore, the Partial Discharge Inception Voltage (PDIV) of the insulated electric wire designed must be improved, and even at a high temperature exceeding 200 ℃, the mechanical properties are excellent and the thermal deterioration can be suppressed.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in that the extrusion molding gives as security out the problem that technology exists to a flat insulated wire preparation system and the insulated wire who makes thereof are provided.
The utility model adopts the following technical scheme:
the utility model provides a flat insulated wire preparation system, which comprises a flat enameled wire, a flat insulated wire and a flat enameled wire, wherein the flat enameled wire is sequentially arranged along the conveying direction of the flat enameled wire,
a flat enameled wire manufacturing device;
the surface roughening device is used for roughening the surface of the flat enameled wire;
the preheating device is used for preheating the flat enameled wire before plastic coating;
the plastic coating device is used for coating the resin layer on the flat enameled wire to obtain an insulated wire;
and a cooling device for cooling the insulated wire and controlling crystallization of the resin layer.
Preferably, the flat enameled wire manufacturing device includes one of a flat stranded enameled wire manufacturing device and a solid flat enameled wire manufacturing device.
Wherein, flat stranded enameled wire making devices sets gradually:
the enameled wire bearing wire coil is used for bearing a single-stranded enameled wire;
the insulating tape releasing machine is used for releasing the insulating tape to serve as a core wire to isolate the single-stranded enameled wire;
the rotating frame is used for pulling out the enameled wires on the enameled wire bearing wire coil to be wound on the insulating tape;
the stranding assembly is used for stranding the enameled wire and the insulating belt to form a stranded enameled wire in an annular array structure;
the flat twisted arrangement forming part is used for forming the twisted enameled wire with the annular array structure into a twisted enameled wire with an oval array structure in an arrangement mode;
and the compaction forming rolling mill is used for further compacting and forming the twisted enameled wire with the oval array structure to obtain the flat multi-strand twisted enameled wire.
The solid flat enameled wire manufacturing devices are sequentially arranged,
the rolling mill is used for rolling the round bare copper wire into a flat bare copper wire;
the forming machine is used for further trimming and forming the flat bare copper wire;
and the enamelling equipment is used for enamelling the trimmed flat bare copper wire to obtain a solid flat enamelled wire.
Further, a straightening assembly is arranged between the flat enameled wire manufacturing device and the surface roughening device.
The surface roughening device is a plasma surface treatment machine;
the cooling device is a cold water tank.
The plastic coating device comprises a resin extruder and a heat treatment component, wherein insulating resin can be selected from PEEK, PEKK, PEI, PPS, PPSU and the like; the number of the insulating layers is generally a single layer, and can be designed into double-layer or more than three-layer insulation according to the processing condition. The extrusion mode of the insulating layer can be a single-machine extrusion mode or a co-extrusion mode or a series extrusion mode. The thickness of the single-side insulation is 60, 105 and 150 mu m.
The heat treatment component is an electromagnetic threaded pipe heater.
Furthermore, the flat insulated wire preparation system also comprises a plurality of flat insulated wires which are arranged at the tail end of the conveying direction of the conveying belt in sequence,
the outer diameter detection device is used for detecting the outer diameter condition of the insulated wire;
the wire storage device is used for storing the cooled insulated wire;
the online detection device is used for detecting the quality of the insulated wire and comprises a high-frequency spark machine, an outer diameter micrometer, an ultrasonic wave eccentric instrument and the like;
and the winding device is used for winding the obtained insulating wire finished product.
The utility model also provides a flat insulated wire is made by above-mentioned preparation system. After the flat insulated wire is subjected to thermal aging for 1000 hours at 200 ℃, the flat insulated wire is not broken down in a voltage resistance test; winding 14 circles of round shaft core rods with the diameter of 1 multiplied by the width of the insulated wire, and avoiding cracking and whitening; the wire is bent on a round shaft rod with the diameter of 1 multiplied by the narrow edge of the insulated wire for 180 degrees without cracking and whitening.
The utility model discloses technical scheme has following advantage:
(1) The utility model provides a preparation system of insulated wire, surface roughening device wherein carries out roughening treatment to the surface of flat enameled wire, improves the adhesion between follow-up resin and flat enameled wire; the preheating device controls the preheating temperature to prevent air bubbles from being generated between the resin and the flat enameled wire, then the resin material is coated and cooled to crystallize the resin material, and finally the insulating wire with the resin layer and the flat enameled wire tightly attached is obtained.
(2) The utility model provides an among the preparation system, used flat stranded enameled wire making devices, adopted the design of the flat stranded transposition of enameled wire of preparation, because its transposition helical structure makes every enameled wire all be located all positions in the cross section to furthest reduces eddy current loss, skin and adjacent effect. The flat multi-strand twisted enameled wire is formed by twisting and arranging a plurality of prepared enameled wires and then rolling the wires into a uniform flat outer diameter, so that the alternating current loss in a high-frequency winding is reduced.
(3) The utility model provides an in the preparation system, can also use solid flat enameled wire making devices, it can be the product diversification, compares with flat stranded enameled wire simultaneously, and the process is simple, easily makes.
(4) The utility model discloses surface roughening device can guarantee that the generating line also has comparable flexibility with relevant insulating layer when keeping the adhesion of insulating layer to when crooked or twist reverse, and insulation cracking or anti-white phenomenon can not appear.
(5) The utility model discloses straightening subassembly can be corrected flat enameled wire straight before the surface roughening device.
(6) The utility model discloses cooling device has included the cold water tank, according to the resin material of difference, makes it postpone the crystallization time, lets its high molecular polymer degree of crystallization too high, so can obtain required resin layer pliability, prevents to produce the bubble simultaneously.
(7) The utility model discloses heat treatment subassembly in the plastic-coated device selects electromagnetic thread pipe heater, controls its heat treatment temperature easily, is convenient for control resin's crystallization temperature and time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a structural view of a system for producing an insulated wire according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a device for manufacturing a flat stranded enameled wire according to embodiment 1 of the present invention
Fig. 3 is a structural view of an electromagnetic coil heater provided in embodiment 1 of the present invention;
fig. 4 is a structural diagram of a solid flat enameled wire manufacturing apparatus according to embodiment 2 of the present invention.
Description of reference numerals:
1-a flat enameled wire manufacturing device; 2-a conductor supply; 3-front tractor, 4-straightening wheel combination; 5-plasma surface treatment machine; 6-intermediate frequency preheating machine; 7-resin extruder; 8-electromagnetic threaded pipe heater; 9-a cold water tank; 10-rear tractor; 11-an outer diameter micrometer; 12-a vertical wire storage rack; 13-an on-line detection device; 14-a biaxial gang winder;
101-an insulating tape unwinding device; 102-an enameled wire containing wire coil; 103-a rotating frame; 104-wire-passing strawboard; 105-aggregate eye model; 106-flat twisted array former; 107-compaction forming rolling mill; 108-a heating furnace; 109-a retractor; 110-a take-up device;
801-a frame; 802-an outer case; 803-stainless steel tube; 804-high temperature incubator; 805-high temperature tubes; 806-high temperature head; 807-moving the plate; 808-conversion of external thread into internal thread; 809-linear slide rail; 810-linear slider;
001-round bare copper wire pay-off; 002-rolling mill; 003-stretch forming machine; 004-modifying the forming machine; 005-annealing device; 006-painting equipment; 007-baking furnace device.
Detailed Description
The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment provides a flat insulated wire preparation system, which is structurally shown in fig. 1, and the flat insulated wire preparation device 1, a conductor supply device 2 for providing a flat enameled wire to be processed for a subsequent system, a straightening wheel assembly 4 for straightening the flat enameled wire, a plasma surface processor 5 for roughening the surface of the flat enameled wire, a medium-frequency preheater 6 for preheating the flat enameled wire before coating with plastic, a plastic coating device for coating a resin layer on the flat enameled wire to obtain an insulated wire, a cold water tank 9 for cooling the insulated wire and controlling crystallization of the resin layer, an outer diameter micrometer 11 for detecting the outer diameter condition of the insulated wire, a vertical wire storage frame 12 for rolling the obtained finished insulated wire, an online detection device 13, and a double-shaft-row rolling machine 14 for rolling the obtained finished insulated wire are sequentially arranged according to the conveying direction of a conveying belt.
The flat enameled wire manufacturing device 1 is a flat stranded enameled wire manufacturing device, and the structure of the flat stranded enameled wire manufacturing device is shown in fig. 2, a rotating frame 103 and a tractor 109 drive single stranded enameled wires loaded on an enameled wire loading drum 102 to pass through a wire passing mesh plate 104 and an eye collecting die 105, and then the single stranded enameled wires are wound on an insulating tape discharged by an insulating tape discharging device 101 to form stranded enameled wires in an annular array structure in a stranded manner, then the stranded enameled wires in the annular array structure are arranged and formed into stranded enameled wires in an oval array structure through a flat stranded arrangement forming part 106, the stranded enameled wires in the oval array structure are further compacted and formed through a compaction forming rolling mill 107 to obtain flat stranded enameled wires, then the enameled wires are solidified and shaped through heating of a heating furnace 108, and finally the stranded enameled wires are wound through a winding device 110.
The surface roughening device is a plasma surface treatment machine 5 which is used for roughening the surface of the flat enameled wire. In some specific embodiments, 2 plasma generators with power supply frequency of 20-50kHz and adjustable output power of 900-1200w are used, and a plasma power supply spray gun nozzle of a 20mm jet direct-injection gun head is matched. Under the action of a high-voltage electric field, electrons flow through the surface of the flat enameled wire to carry out strong impact to open or roughen a surface molecular connection structure, and when the resin for coating later is in contact with the treated surface of the resin, good wetting can be generated; the adhesive is permeated into capillary pores opened by a surface molecular connection structure or into a roughened groove, and the adhesion force is increased by the anchoring effect; meanwhile, under the action of a high-voltage electric field, oxygen in the air is changed into ozone, the ozone is decomposed into oxygen and nascent oxygen atoms, and the nascent oxygen atoms are strong oxidizers and can oxidize a-carbon atoms in polymer molecules of the resin for coating to form carbonyl or hydroxyl. With the structure, the polarity of the material molecules is increased, and the surface tension is improved. In addition, due to the generation of hydroxyl, new a-carbon atoms are generated in the molecular chain, and active hydrogen appears. The active hydrogen can react with active group isocyanic acid radical (-NCO) in the polymer, which increases the adhesive force.
The intermediate frequency preheating machine 6 heats the surface of the conductor to a desired temperature (for example, 180 ℃) by using the principle of non-contact eddy current coil induction, and in the induction heating process, the outer surface of the conductor is oxidized to form an oxide film on the outer surface of the conductor, thereby increasing the adhesion between the conductor and the thermoplastic resin. In some embodiments, a medium frequency straight through induction preheater with a power of 100kW, a frequency of 1000Hz, and a skin depth of 0.487mm is contemplated.
The plastic coating device is used for coating a resin layer on a flat enameled wire to obtain an insulated wire, and comprises a resin extruder 7 for extruding resin and a heat treatment device electromagnetic threaded pipe heater 8. The structure of the electromagnetic threaded pipe heater 8 is shown in fig. 3, and comprises a rack 801 and a movable flat plate 807 arranged above a support, wherein a stainless steel outer box 802 is arranged on the movable flat plate 807, a stainless steel high-temperature heat preservation box 804 is arranged inside the stainless steel outer box 802, a DN40 stainless steel pipe 803 is positioned on one side of the outer box 802 and connected with a high-temperature pipe 805, the high-temperature pipe 805 penetrates through the stainless steel outer box 802 and the high-temperature heat preservation box 804 from the side and is connected with a high-temperature head 806 arranged on the side of the high-temperature heat preservation box 804, an outer wire-to-inner wire 808 is wound on the high-temperature pipe 805, and a linear slide rail 809 is further arranged on the movable flat plate 807 and matched with a linear slide block 810 arranged on the high-temperature heat preservation box 804, so that the high-temperature heat preservation box 804 can move along the linear slide rail 809. The conveyor belt can pass through the high-temperature pipe 805 and the stainless steel pipe 806, and the resin-coated flat enamel wire is subjected to heat treatment while passing through the inside of the high-temperature pipe 805.
In some embodiments, when the insulating layer is manufactured by using PEEK resin extrusion, if crystallization is fast, dimensional stability is easily achieved, but a disadvantage of low peeling force and weak bonding force is caused. If the PEEK material does not achieve the desired level of crystallinity on the wire, post-crystallization can be carried out by electromagnetic screw-tube heater 8, using slow quenching to promote crystallinity. The temperature of the electromagnetic threaded pipe heater 8 is controlled to be about 180-300 ℃ above the glass transition temperature and below the melting point so as to obtain the best crystallization product. The treated high polymer material can eliminate the internal stress of the material to a certain extent, and the crystallization degree of the high polymer is adjusted, so that the physical and mechanical properties of the material are influenced. In addition, the application of the preheating temperature to the conductor can delay the crystallization in the wire coating operation. Thus, when high crystallinity is required, the conductor is preheated at a temperature that will depend on the nature and geometry of the conductor, but excellent results are achieved in the temperature range of 120 ℃ to 200 ℃. On cooling, the color of natural PEEK goes from a transparent dark brown to an opaque gray/beige color, which changes due to cooling and crystallization of the surface of the insulating layer. Once this transition has occurred, additional water cooling can be used, as the crystallization within the molten polymer is not significantly affected. If an amorphous (amorphous) wire coating is desired, cold water tank 9 can be moved close to electromagnetic threaded tube heater 8.
A rear tractor 10 which corresponds to the front tractor 3 and is used for dragging the insulated wire is arranged between the cold water tank 9 and the outer diameter micrometer 11.
Example 2
The embodiment provides a system for preparing a flat insulating wire, which is different from embodiment 1 in that a flat enameled wire manufacturing device 1 is a solid flat enameled wire manufacturing device, the structure of which is shown in fig. 4, a round bare copper wire is fed by a round bare copper wire pay-off device 001, a rolling mill 002 rolls and presses the round bare copper wire into a flat shape, a drawing forming machine 003 and a finishing forming machine 004 are used for further drawing and finishing the copper wire to a required specification, an enamelling device comprises an annealing device 005, an enamelling device 006 and a baking furnace device 007, the annealing device 005 anneals the copper wire to a required hardness, a thermosetting polymer is coated on the copper wire by the enamelling device 006, and finally a solvent is volatilized in the baking furnace device 007, and the polymer is cured to obtain the solid flat enameled wire.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (9)
1. A flat insulated wire preparation system is characterized by comprising flat enameled wires which are sequentially arranged along the conveying direction of the flat enameled wires,
a flat enameled wire manufacturing device;
the surface roughening device is used for roughening the surface of the flat enameled wire;
the preheating device is used for preheating the flat enameled wire before plastic coating;
the plastic coating device is used for coating the resin layer on the flat enameled wire to obtain an insulated wire;
and a cooling device for cooling the insulated wire and controlling crystallization of the resin layer.
2. The manufacturing system according to claim 1, wherein the flat enamel wire manufacturing apparatus includes one of a flat stranded enamel wire manufacturing apparatus and a solid flat enamel wire manufacturing apparatus.
3. The manufacturing system according to claim 2, wherein the flat stranded enameled wire manufacturing device is provided with:
the enameled wire bearing wire coil is used for bearing a single-stranded enameled wire;
the insulating tape pay-off machine is used for releasing the insulating tape to serve as a core wire to isolate a single-stranded enameled wire;
the rotating frame is used for pulling out the enameled wires on the enameled wire bearing wire coil to be wound on the insulating tape;
the stranding assembly is used for stranding the enameled wire and the insulating tape to form a stranded enameled wire with an annular array structure;
the flat twisted arrangement forming part is used for forming the twisted enameled wire with the annular array structure into a twisted enameled wire with an oval array structure in an arrangement mode;
and the compaction forming rolling mill is used for further compacting and forming the twisted enameled wire with the oval array structure to obtain the flat multi-strand twisted enameled wire.
4. The manufacturing system according to claim 2, wherein the solid flat enameled wire manufacturing device is provided with,
the rolling mill is used for rolling the round bare copper wire into a flat bare copper wire;
the forming machine is used for further trimming and forming the flat bare copper wire;
and the enamelling equipment is used for enamelling the trimmed flat bare copper wire to obtain a solid flat enamelled wire.
5. The production system according to claim 1,
and a straightening assembly is also arranged between the flat enameled wire manufacturing device and the surface roughening device.
6. The manufacturing system of claim 1, wherein the surface roughening device is a plasma surface treating machine;
the cooling device is a cold water tank.
7. The system of claim 1, wherein the overmolding device comprises a resin extruder and a heat treatment assembly.
8. The production system of claim 7, wherein the thermal treatment assembly is a solenoid-heated tube heater.
9. The manufacturing system according to claim 1, further comprising, provided at an end in a conveying direction of the conveyor belt in sequence,
the outer diameter detection device is used for detecting the outer diameter condition of the insulated wire;
the wire storage device is used for storing the cooled insulated wire;
the online detection device is used for detecting the quality of the insulated wire;
and the winding device is used for winding the obtained insulating wire finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222346603.XU CN218384613U (en) | 2022-09-02 | 2022-09-02 | Flat insulated wire preparation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222346603.XU CN218384613U (en) | 2022-09-02 | 2022-09-02 | Flat insulated wire preparation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218384613U true CN218384613U (en) | 2023-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222346603.XU Active CN218384613U (en) | 2022-09-02 | 2022-09-02 | Flat insulated wire preparation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218384613U (en) |
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2022
- 2022-09-02 CN CN202222346603.XU patent/CN218384613U/en active Active
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