CN113451037A - Winding forming device for cutting type three-dimensional winding transformer core - Google Patents
Winding forming device for cutting type three-dimensional winding transformer core Download PDFInfo
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- CN113451037A CN113451037A CN202110572005.1A CN202110572005A CN113451037A CN 113451037 A CN113451037 A CN 113451037A CN 202110572005 A CN202110572005 A CN 202110572005A CN 113451037 A CN113451037 A CN 113451037A
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- 238000004804 winding Methods 0.000 title claims abstract description 123
- 238000005520 cutting process Methods 0.000 title claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000010923 batch production Methods 0.000 abstract description 2
- 238000003698 laser cutting Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 80
- 230000008569 process Effects 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012113 quantitative test Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
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Abstract
The invention relates to the field of transformer manufacturing equipment, in particular to a winding forming device of a cutting type three-dimensional winding transformer core, which comprises a feeding mechanism, a tensioning mechanism and a winding forming mechanism, wherein the feeding mechanism is arranged on the feeding mechanism; the feeding mechanism is used for mounting strip steel coil raw materials to be wound and discharging the materials; the tensioning mechanism is used for tensioning the strip steel coil raw material before rewinding; the winding forming mechanism realizes winding of the three-dimensional winding transformer core; the base is provided with a guide rail and a lead screw pair, the movable support is arranged on the base through the guide rail, and the lead screw pair drives the movable support to translate along the guide rail; the winding machine is arranged on the movable support and comprises a motor and a rotating shaft. The winding method realizes winding of the cut type three-dimensional wound transformer core, prepares for subsequent linear cutting or laser cutting of the inclined plane, and has important significance for batch production of the three-dimensional wound transformer core.
Description
Technical Field
The invention relates to the field of transformer manufacturing equipment, in particular to a winding and forming device for a cutting type three-dimensional winding transformer core.
Background
The amorphous stereoscopic wound core is mainly formed by sequentially and continuously winding a plurality of trapezoidal material belts with different sizes, three rectangular iron core frames 1 (see figure 1) with approximate semi-circular sections and identical geometric sizes are obtained, two iron core frames 1 on the same side are spliced in pairs, three core columns of the iron core are arranged in an equilateral triangle three-dimensional mode after splicing, the cross sections of the iron core columns are close to circular shapes, the three iron core magnetic circuits are consistent in length, the lengths of iron yokes are all shortest, and therefore the iron core is light in weight and small in no-load loss. The production process from the iron core to the coil is greatly different from the traditional laminated iron core, special manufacturing equipment is needed, and the current automation degree is obviously improved.
The single-frame iron core of the three-dimensional winding transformer on the market at present needs to be sequentially and continuously wound by trapezoidal materials with different sizes, and the trapezoidal material strips with different sizes need to be obtained by firstly performing oblique shearing and then being wound by special winding equipment and a die. The process is complex, and special nonstandard oblique shearing equipment needs to be designed. The winding process has high requirement on control precision, and the winding equipment is complex, thereby invisibly improving the manufacturing cost of the three-dimensional winding transformer.
Therefore, a new solution is needed to be provided, which can realize the transformer scheme of the three-dimensional coil, but the requirements on the control precision and the equipment in the process are not high, and the production cost of the three-dimensional coil transformer can be reduced as a whole.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a winding forming device for a cutting type three-dimensional winding transformer core, which is used for winding the cutting type three-dimensional winding transformer core, is prepared for subsequent linear cutting or laser cutting of an inclined plane, and has important significance for batch production of the three-dimensional winding transformer core.
The technical scheme for realizing the functions is as follows: a winding forming device of a cutting type three-dimensional winding transformer core is characterized in that:
comprises a feeding mechanism, a tensioning mechanism and a winding forming mechanism;
the feeding mechanism is used for mounting strip steel coil raw materials to be wound and discharging the materials; the tensioning mechanism is used for tensioning the strip steel coil raw material before rewinding; the winding forming mechanism realizes winding of the three-dimensional winding transformer core;
the winding forming mechanism comprises a base, a movable support and a winding machine; the base is provided with a guide rail and a lead screw pair, the movable support is arranged on the base through the guide rail, and the lead screw pair drives the movable support to translate along the guide rail; the winding machine is arranged on the movable support and comprises a motor and a rotating shaft, the motor drives the rotating shaft to rotate, and the tail end of the rotating shaft is provided with an inner die of the wound core.
Furthermore, the winding forming mechanism further comprises a fixed support, a pressing mechanism is mounted on the fixed support, the pressing mechanism comprises a telescopic part, the tail end of the telescopic part is provided with a roller, the roller presses the wound strip material in the winding process of the three-dimensional winding transformer iron core, the shaping of the iron core shape is realized, and the problem that the strip material deviates from the winding due to uneven stress of the strip material in the winding process is solved.
Further, the motor of the winding machine is connected with the rotating shaft through a speed reducer.
Furthermore, a bearing seat is arranged on the movable support, and the rotating shaft is fixed on the bearing seat through a bearing.
Furthermore, the telescopic part comprises a sleeve and a telescopic rod, a spring is arranged in the sleeve, one end of the telescopic rod extends into the sleeve and is connected with the spring, and the other end of the telescopic rod is connected with the roller.
Furthermore, the tensioning mechanism comprises a support frame, four fixed wheels are arranged on the support frame, a slide rail and a slide block are also arranged in the middle of the support frame, the slide block is vertically arranged and is provided with a balancing weight, and a movable wheel is arranged on the slide block; the belt material passes through the fixed wheel and the movable wheel, and the movable wheel always tensions the belt material under the action of the balancing weight.
Furthermore, the sliding block is provided with a position sensor, when the three-dimensional wound core winds a strip with a certain length, the motor of the winding machine stops rotating, the feeding mechanism continuously discharges materials, the length of the strip on the tensioning mechanism is long, the sliding block can move downwards under the action of self gravity, and after the position sensor detects that the sliding block moves, the control system can control the feeding mechanism to stop discharging materials.
Further, above-mentioned feeding mechanism includes the support, be equipped with servo motor and rotation axis on the support, be equipped with a plurality of jack catchs on the rotation axis, the jack catch is used for the strip coil of strip raw materials that the coiling was treated to fixed mounting.
Further, above-mentioned jack catch includes the boundary beam, two sets of connecting rods and the horizontal pole that set up at the rotation axis in appearance along the axial, and the one end of every group connecting rod articulates on the boundary beam, and the other end is articulated with the horizontal pole, and parallelogram structure in boundary beam, two sets of connecting rods and horizontal pole besieged city, fixed mounting board on the horizontal pole, the mounting panel is the panel of L type. The support rod is hinged to the cross rod at one end, and the other end of the support rod can move and be fixed on the rotating shaft.
The connecting rod of parallelogram structure is rotatable, and when the connecting rod rotated, the distance of its mounting panel to the rotation axis changed to this belt material coil of strip raw materials that adapts to not unidimensional, the bracing piece is used for fixing the position of mounting panel.
Furthermore, each group of connecting rods comprises two connecting rods, one ends of the two connecting rods are hinged with the edge beam through pin shafts, and the other ends of the two connecting rods are hinged with the cross rod through pin shafts.
The invention has the advantages that:
1. winding and forming of the cutting type three-dimensional coil transformer are realized through a winding and forming device of the cutting type three-dimensional coil transformer, and preparation is made for slope cutting and assembly of the three-dimensional coil transformer at the later stage; a lead screw pair of the winding forming mechanism drives the movable support to translate along the guide rail, so that the winding machine can realize cambered surface winding of the three-dimensional wound core;
2. the winding platform reciprocating mechanism controlled by the closed-loop control system can reciprocate with high precision, so that the winding and positioning of the three-dimensional coil transformer of the strip with different thicknesses are adapted;
3. the winding of the cutting type three-dimensional wound transformer is completed, so that the yoke part area of the novel three-dimensional wound iron core is larger, the magnetic leakage of the iron core can be reduced to a certain extent, the efficiency of the iron core is improved, and the winding machine contributes to the national power system;
4. the claw of the feeding mechanism has simple structure and can adapt to strip steel coil raw materials to be wound with different inner diameter sizes.
Drawings
FIG. 1 is a prior art conventional solid-coiled transformer core;
fig. 2 is a schematic view of a single-frame core of a conventional stereoscopic transformer core;
FIG. 3 is a schematic view of a single-frame core to be manufactured by the winding apparatus of the present invention;
FIG. 4 is a schematic view of a single frame iron core to be manufactured by the winding apparatus of the present invention after being cut;
FIG. 5 is a flow chart of a single frame iron core and a three-dimensional winding transformer iron core to be manufactured by the winding device of the present invention;
FIG. 6 is a structural view of the roll forming apparatus of the present invention;
FIG. 7 is an enlarged view of the feed mechanism of FIG. 6;
FIG. 8 is another directional view of the winding mechanism of FIG. 6;
fig. 9 is a structural view of a transformer core in which single-frame cores to be manufactured by the winding apparatus of the present invention are assembled into a three-dimensional wound transformer core.
The reference numbers in the figures illustrate: 1. a feeding mechanism;
11. a support; 13. a rotating shaft; 14. a boundary beam; 15. a connecting rod; 16. a cross bar; 17. mounting a plate; 18. a support bar;
2. a tensioning mechanism;
21. a support frame; 22. a fixed wheel; 23. a slide rail; 24. a slider; 25. a movable wheel;
3. a winding forming mechanism;
31. a base; 32. moving the support; 33. a motor; 34. a rotating shaft; 35. fixing a bracket; 36. a roller; 37. a speed reducer; 38. a bearing seat; 39. a sleeve; 310. a telescopic rod; 311. a guide rail; 312. and a screw pair.
4. A single-frame iron core; 5. an iron yoke; 6. a core limb; 7. a cambered surface; 8. a bevel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Referring to fig. 6, a winding and forming device for a cut type stereoscopic transformer core comprises a feeding mechanism 1, a tensioning mechanism 2 and a winding and forming mechanism 3. The feeding mechanism 1 is used for installing and discharging a strip steel coil raw material to be wound; the tensioning mechanism 2 is used for tensioning the strip steel coil raw material before rewinding; the winding forming mechanism 3 realizes winding of the three-dimensional winding transformer core.
Referring to fig. 6 and 8, the winding and forming mechanism 3 includes a base 31, a moving bracket 32, and a winder. A guide rail 311 and a screw pair 312 are arranged on the base 31, the movable support 32 is arranged on the base 31 through the guide rail, and the screw pair 312 drives the movable support 32 to move back and forth along the guide rail 311; the winding machine is arranged on the movable support 32 and comprises a motor 33 and a rotating shaft 34, the motor 33 drives the rotating shaft 34 to rotate, an inner die for winding the iron core is arranged at the tail end of the rotating shaft 34, and a strip material is wound on the inner die.
Preferably, the motor 33 of the winding machine is connected to the shaft 34 through a reducer 37. The movable support 32 is provided with a bearing seat 38, and the rotating shaft 34 is fixed on the bearing seat 38 through a bearing.
Preferably, the winding mechanism 3 further includes a fixing bracket 35, and a pressing mechanism is mounted on the fixing bracket 35, and the pressing mechanism includes a telescopic component, and a roller 36 is disposed at a tail end of the telescopic component. The roller 36 compresses the wound strip material in the winding process of the three-dimensional wound transformer core to realize the shaping of the core shape, so as to prevent the problem that the strip material deviates from the winding due to uneven stress of the strip material in the winding process.
Preferably, the telescopic member comprises a sleeve 39 and a telescopic rod 310, a spring is arranged in the sleeve 39, one end of the telescopic rod 310 extends into the sleeve 39 and is connected with the spring, and the other end of the telescopic rod 310 is connected with the roller 36.
As a preferred embodiment of the present invention, referring to fig. 6, the tensioning mechanism 2 includes a supporting frame 21, four fixed wheels 22 are disposed on the supporting frame 21, a vertically disposed slide rail 23 and a slide block 24 matched with the slide rail 23 are further disposed in the middle of the supporting frame 21, the four fixed wheels 22 are disposed in two rows, the slide rail 23 is located in the middle of the supporting frame 21, the slide block 24 has a counterweight, and a movable wheel 25 is disposed on the slide block 24; the belt material passes through the fixed wheel 22 and the movable wheel 25, and the movable wheel 25 tensions the belt material all the time under the action of the balancing weight.
Preferably, the slide block 24 is provided with a position sensor, when the stereoscopic wound core winds a strip with a certain length, the motor 33 of the winding machine stops rotating, the feeding mechanism 1 continuously discharges the strip, the length of the strip on the tensioning mechanism 2 is long, the slide block 24 moves downwards under the self gravity, and after the position sensor detects that the strip moves, the control system controls the feeding mechanism 1 to stop discharging.
Referring to fig. 6 and 7, the feeding mechanism 1 includes a support 11, a servo motor and a rotating shaft 13 are disposed on the support 11, and a plurality of jaws are disposed on the rotating shaft 13, and the number of the jaws in this embodiment is preferably three. The clamping jaws are used for fixedly mounting strip steel coil raw materials to be wound.
Preferably, the clamping jaw comprises an edge beam 14, two groups of connecting rods 15 and a cross rod 16 which are axially arranged on the outer surface of the rotating shaft 13, one end of each group of connecting rods 15 is hinged to the edge beam 14, the other end of each group of connecting rods is hinged to the cross rod 16, the edge beam 14, the two groups of connecting rods 15 and the cross rod 16 form a parallelogram structure in an enclosed manner, a mounting plate 17 is fixed on the cross rod 16, and the mounting plate 17 is an L-shaped plate; and the support rod 18 is further included, one end of the support rod 18 is hinged with the cross rod 16, and the other end of the support rod 18 can move and be fixed on the rotating shaft 13.
Preferably, each set of connecting rods 15 comprises two connecting rods 15, one end of each connecting rod 15 is hinged to the edge beam 14 through a pin, and the other end of each connecting rod 15 is hinged to the cross bar 16 through a pin.
The connecting rod 15 with the parallelogram structure can rotate, when the connecting rod 15 rotates, the distance from the mounting plate 17 to the rotating shaft 13 changes, so that the connecting rod is suitable for strip steel coil raw materials with different sizes, and the supporting rod 18 is used for fixing the position of the mounting plate.
The winding forming device of the cutting type three-dimensional winding transformer iron core provided by the invention can be used for manufacturing a new three-dimensional winding transformer iron core, and the manufacturing method comprises the following steps: referring to fig. 5, it comprises two parts: firstly, the single-frame iron core 4 is manufactured, and then the single-frame iron core 4 is combined into the three-phase three-dimensional wound iron core.
Specifically, the winding forming device for the cutting type three-dimensional winding transformer core provided by the invention is used for realizing that the single-frame core 4 is manufactured by two parts: 1. selecting a proper strip with a conventional width, and winding the strip on a die with a certain outline dimension through an arc surface 7 to form a basic shape of the iron core; 2. and performing linear cutting on the wound strip to finish the final molding of the single-frame iron core 4.
The manufacturing method of the single-frame iron core 4 specifically comprises the following steps:
s1: installing an inner die for winding the iron core on the iron core winding machine;
s2: introducing a suitable width of strip (depending on the particular core design size); by selecting a proper bandwidth, the width of the strip is fixed, the winding positioning and shape control and the design of an inner window die are important guarantees of the step;
s3: the winding machine automatically winds according to the designed size of the iron core; when winding, the requirements of tight and smooth winding of the strip material are met by controlling the tension of the strip material and the pressing force of the iron core winding strip material. Two layers of connected strip materials are wound in a staggered mode, the two side edges of the strip materials wound into the single-frame iron core 4 are cambered surfaces 7, and the two side edges are shown in figures 2 and 3.
S4: after the single-frame iron core 4 is wound until the external dimension meets the design requirement, the strip is cut off, and the strip, the winding inner die and the iron core are lifted away from the winding machine;
s5: the annular iron core is made into a rectangular shape to form a core post 6 which is symmetrical left and right and an iron yoke 5 which is symmetrical up and down, and the manufacturing of the single-frame iron core 4 is finished by fixing and molding an outer die;
s6: repeating the operations S2-S5 to complete another two single-framed cores 4;
s7: the special annealing furnace for the alloy iron core is selected, and the iron core is annealed with the die. Its advantages are single frame, single heat treatment, simple operation and large-scale production.
S8: the single-frame iron core 4 is varnished by selecting a proper varnish dipping material, and the single-frame iron core 4 is characterized in that the structural strength of the single-frame iron core 4 is realized, the wire cutting is convenient, and the interlayer gap and the rusting of the strip are not worried. And greatly reduces the mechanical damage probability of the iron core in the processes of transportation and transformer assembly, and ensures the product quality.
S9: and according to the structural design requirement of the iron core, each core column of the single-frame iron core 4 is cut by the inclined plane 8, so that the splicing requirement of the three-phase iron core is met. Compared with the traditional three-dimensional iron core, the process mode has the advantages that the strip is obliquely sheared, the production efficiency is higher, the iron core size control precision is better, and the operation is simple.
Compared with the traditional three-dimensional winding process, the winding forming device disclosed by the invention is used for manufacturing the single-frame iron core, and the strips with the same width are adopted, so that the process time and cost of oblique shearing of the strips are saved, and the technical difficulty of a winding machine is reduced.
And finally, combining the single-frame iron core 4 into a three-phase three-dimensional wound iron core, which specifically comprises the following steps:
the iron core columns 6 of two adjacent single-frame iron cores 4 are cut into inclined planes 8 for lamination, and a special iron core combination device is adopted to combine three single-frame iron cores 4 into a three-phase three-dimensional rolled iron core structure.
Three-phase three-dimensional coil iron core structure performance test
The performance detection of the finished amorphous three-dimensional wound core manufactured by the method is mainly to perform B value test once on three different sections, including qualitative test and quantitative test. And testing whether the curve of the B is smooth, whether a distortion point exists or not and whether the three phases are symmetrical or not. And a quantitative test, i.e. whether the value of B at a given voltage meets the design requirements.
Compared with the traditional three-dimensional roll process, the novel process method for winding the amorphous three-dimensional roll iron core in the wire-cutting mode is simple, reduces the process flow and the equipment complexity, further reduces the production cost, and makes a contribution to national energy conservation and emission reduction and environmental pollution reduction.
Referring to fig. 9, the three-dimensional wound transformer core is manufactured by the method and comprises three single-frame cores 4 with the same structure, each single-frame core 4 comprises core legs 6 which are bilaterally symmetrical and yokes 5 which are bilaterally symmetrical, the core legs 6 which are bilaterally symmetrical and the yokes 5 which are bilaterally symmetrical enclose a rectangular window, each single-frame core 4 is formed by winding strips, two adjacent layers of the strips are wound in a staggered mode, two side edges of each single-frame core 4 formed by winding the strips are cambered surfaces 7, and the inner sides of the core legs 6 of each single-frame core 4 are inclined surfaces 8. Each single-frame iron core 4 is connected with the other two single-frame iron cores 4 through iron core columns 6 to form a three-phase three-dimensional iron core rolling structure, and the inclined planes of the core columns of the two adjacent single-frame iron cores 4 are attached.
In a preferred embodiment of the present invention, the single frame core 4 is formed by winding strips having the same width.
In a preferred embodiment of the present invention, the ribbon is an amorphous alloy ribbon.
As a preferred embodiment of the present invention, the above-described single frame core 4 is required to be subjected to a painting process.
In a preferred embodiment of the present invention, the inclined surface of the single frame core 4 on the inner side of the core leg 6 is formed by linear cutting.
A transformer comprises any one of the three-dimensional winding transformer cores.
Traditional three-dimensional wound core magnetic circuit: the conventional three-phase three-dimensional wound core is composed of three planar wound cores having independent magnetic circuits, and the core leg 6 of each phase winding is composed of two wound cores connected in parallel, as shown in fig. 6. The cross section of the yoke part of the traditional three-dimensional coil is equal to the cross section of the core part of the traditional three-dimensional coil, but larger magnetic flux flows in, the magnetic flux does not contribute to the excitation voltage, but larger iron loss is caused.
Taking a traditional three-dimensional winding amorphous transformer iron core with 400KVA capacity and a three-dimensional winding amorphous transformer iron core provided by the invention as examples, parameters of the traditional three-dimensional winding amorphous transformer iron core and the three-dimensional winding amorphous transformer iron core are calculated, and the parameters of the two are compared as shown in a table 1:
TABLE 1
The test result of the given pure resistance load of the traditional three-dimensional amorphous transformer core is shown in table 2. The test result of the given pure resistance load of the three-dimensional amorphous transformer core is shown in the table 3.
TABLE 2
| Given load resistance | Input power | Output power | Copper loss | Iron loss | Efficiency of |
| 0.38 | 398307.824 | 387867.803 | 5702 | 256 | 0.959437528 |
| 0.5R | 306556.26 | 297050.6748 | 3450 | 211 | 0.95755689 |
TABLE 3
| Given load resistance | Input power | Output power | Copper loss | Iron loss | Efficiency of |
| 0.38 | 398407.835 | 387868.9 | 5695 | 242 | 0.959437528 |
| 0.5R | 306756.45 | 297050.8 | 3436 | 206 | 0.95755689 |
The three-dimensional wound amorphous transformer core provided by the invention has equivalent output power and efficiency with the traditional three-dimensional wound amorphous transformer core under the same given conditions, and the copper loss and the iron loss of the linear cutting three-dimensional wound are slightly less. The three-dimensional coil adopting the two schemes has the advantages that under the condition of the same weight, the performance of the three-dimensional coil adopting the wire cutting mode and the three-dimensional coil adopting the traditional winding mode is almost the same, but the section of a core column adopting the wire cutting mode is smaller, so that the copper consumption of a winding can be effectively reduced, and the overall cost is reduced. In addition, the external wire cutting mode has simple process and high forming precision. The finished product saves materials, reduces the production cost, and makes contributions to national energy conservation, emission reduction and environmental pollution reduction.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present specification and the accompanying drawings, or directly or indirectly applied to other related system fields, are included in the scope of the present invention.
Claims (10)
1. A winding forming device of a cutting type three-dimensional winding transformer core is characterized in that:
comprises a feeding mechanism (1), a tensioning mechanism (2) and a winding forming mechanism (3);
the feeding mechanism (1) is used for mounting strip steel coil raw materials to be wound and discharging the materials; the tensioning mechanism (2) is used for tensioning the strip steel coil material before rewinding; the winding forming mechanism (3) realizes winding of the three-dimensional winding transformer core;
the winding forming mechanism (3) comprises a base (31), a movable support (32) and a winding machine; the base (31) is provided with a guide rail (311) and a lead screw pair (312), the movable support (32) is arranged on the base (31) through the guide rail, and the lead screw pair drives the movable support (32) to translate along the guide rail; the winding machine is arranged on the movable support (32) and comprises a motor (33) and a rotating shaft (34), the motor (33) drives the rotating shaft (34) to rotate, and the tail end of the rotating shaft (34) is provided with an inner die of a wound core.
2. The winding forming device of the cutting type stereoscopic transformer core according to claim 1, wherein:
the winding forming mechanism (3) further comprises a fixing support (35), a pressing mechanism is mounted on the fixing support (35) and comprises a telescopic component, and a roller (36) is arranged at the tail end of the telescopic component.
3. The winding forming device of the cutting type stereoscopic transformer core according to claim 1, wherein:
and a motor (33) of the winding machine is connected with the rotating shaft (34) through a speed reducer (37).
4. The winding forming device of the cutting type stereoscopic transformer core according to claim 1, wherein:
and a bearing seat (38) is arranged on the movable support (32), and the rotating shaft (34) is fixed on the bearing seat (38) through a bearing.
5. The winding forming device of the cutting type stereoscopic transformer core according to claim 2, wherein:
the telescopic component comprises a sleeve (39) and a telescopic rod (310), a spring is arranged in the sleeve (39), one end of the telescopic rod (310) extends into the sleeve (39) to be connected with the spring, and the other end of the telescopic rod is connected with the roller (36).
6. The winding forming device of the cut type stereoscopic transformer core according to any one of claims 1 to 5, wherein:
the tensioning mechanism (2) comprises a support frame (21), four fixed wheels (22) are arranged on the support frame (21), a vertically-arranged slide rail (23) and a slide block (24) matched with the slide rail (23) are further arranged in the middle of the support frame (21), the slide block (24) is provided with a balancing weight, and a movable wheel (25) is arranged on the slide block (24); the belt material passes through the fixed wheel (22) and the movable wheel (25), and the movable wheel (25) tensions the belt material all the time under the action of the balancing weight.
7. The winding forming device of the cutting type stereoscopic transformer core according to claim 6, wherein:
the sliding block (24) is provided with a position sensor, when the three-dimensional wound core winds a strip with a certain length, a motor (33) of the winding machine stops rotating, the feeding mechanism (1) continuously discharges materials, the length of the strip on the tensioning mechanism (2) is long, the sliding block (24) moves downwards under the action of self gravity, and after the position sensor detects that the strip moves, the control system controls the feeding mechanism (1) to stop discharging materials.
8. The winding forming device of the cut type stereoscopic transformer core according to any one of claims 1 to 5, wherein:
feeding mechanism (1) includes support (11), be equipped with servo motor and rotation axis (13) on support (11), be equipped with a plurality of jack catchs on rotation axis (13), the jack catch is used for the strip coil of strip raw materials that fixed mounting waited to convolute.
9. The winding forming device of the cutting type stereoscopic transformer core according to claim 8, wherein:
the clamping jaw comprises an edge beam (14), two groups of connecting rods (15) and a cross rod (16), wherein the edge beam (14), the two groups of connecting rods (15) and the cross rod (16) are axially arranged on the outer surface of the rotating shaft (13), one end of each group of connecting rods (15) is hinged to the edge beam (14), the other end of each group of connecting rods is hinged to the cross rod (16), the edge beam (14), the two groups of connecting rods (15) and the cross rod (16) form a parallelogram structure in a surrounding manner, a mounting plate (17) is fixed on the cross rod (16), and the mounting plate (17) is an L-shaped plate; the support rod (18) is further included, one end of the support rod (18) is hinged with the cross rod (16), and the other end of the support rod (18) can move and be fixed on the rotating shaft (13).
10. The winding forming device of the cutting type stereoscopic transformer core according to claim 9, wherein:
each group of connecting rods (15) comprises two connecting rods (15), one ends of the two connecting rods (15) are hinged with the edge beam (14) through pin shafts, and the other ends of the two connecting rods are hinged with the cross rod (16) through pin shafts.
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| CN202110572005.1A CN113451037A (en) | 2021-05-25 | 2021-05-25 | Winding forming device for cutting type three-dimensional winding transformer core |
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| CN202110572005.1A CN113451037A (en) | 2021-05-25 | 2021-05-25 | Winding forming device for cutting type three-dimensional winding transformer core |
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