CN116631720B - EQ type magnetic powder core and compression molding device thereof - Google Patents
EQ type magnetic powder core and compression molding device thereof Download PDFInfo
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- CN116631720B CN116631720B CN202310687977.4A CN202310687977A CN116631720B CN 116631720 B CN116631720 B CN 116631720B CN 202310687977 A CN202310687977 A CN 202310687977A CN 116631720 B CN116631720 B CN 116631720B
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- 239000006247 magnetic powder Substances 0.000 title claims abstract description 100
- 238000000748 compression moulding Methods 0.000 title abstract description 21
- 238000003825 pressing Methods 0.000 claims abstract description 23
- 238000000465 moulding Methods 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 12
- 239000004593 Epoxy Substances 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- -1 iron-silicon-aluminum Chemical compound 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 8
- 229920002050 silicone resin Polymers 0.000 claims description 8
- 229910002796 Si–Al Inorganic materials 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 6
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- LAQFLZHBVPULPL-UHFFFAOYSA-N methyl(phenyl)silicon Chemical compound C[Si]C1=CC=CC=C1 LAQFLZHBVPULPL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- AHDSRXYHVZECER-UHFFFAOYSA-N 2,4,6-tris[(dimethylamino)methyl]phenol Chemical compound CN(C)CC1=CC(CN(C)C)=C(O)C(CN(C)C)=C1 AHDSRXYHVZECER-UHFFFAOYSA-N 0.000 claims description 4
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 229920006122 polyamide resin Polymers 0.000 claims description 4
- 229920000305 Nylon 6,10 Polymers 0.000 claims description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 3
- 235000013539 calcium stearate Nutrition 0.000 claims description 3
- 239000008116 calcium stearate Substances 0.000 claims description 3
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 claims description 3
- 235000019359 magnesium stearate Nutrition 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052802 copper Inorganic materials 0.000 abstract description 9
- 239000010949 copper Substances 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 6
- 238000004804 winding Methods 0.000 abstract description 6
- 230000006698 induction Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 description 14
- 239000000463 material Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 13
- 238000007906 compression Methods 0.000 description 11
- 230000006835 compression Effects 0.000 description 10
- 238000002156 mixing Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/08—Cores, Yokes, or armatures made from powder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
-
- 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
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses an EQ type magnetic powder core and a compression molding device thereof, and belongs to the technical field of magnetic powder cores. The invention is used for solving the technical problems that the copper wire winding on the magnetic powder core in the prior art and the existing magnetic powder core compression molding have low continuous and automatic degree, and the molding rate of the magnetic powder core needs to be further improved. The invention not only effectively improves the saturation induction intensity of the magnetic powder core, but also facilitates the winding of copper wires due to the EQ-shaped structure, ensures the accuracy of the addition amount of the pressing raw materials by optimizing the pressing forming device, and also facilitates the taking out of the finished product of the EQ-shaped magnetic powder core, realizes continuous automatic processing, and improves the pressing forming speed of the EQ-shaped magnetic powder core and the quality of the EQ magnetic powder core.
Description
Technical Field
The invention relates to the technical field of magnetic powder cores, in particular to an EQ type magnetic powder core and a compression molding device thereof.
Background
The magnetic powder core is a magnetic material formed by mixing metal magnetic powder particles with an insulating medium and then performing high-pressure compression molding, and mainly comprises four series of iron powder cores, iron-silicon-aluminum magnetic powder cores, high-flux magnetic powder cores and molybdenum-slope-mullite magnetic powder cores, wherein the magnetic powder cores of the series are characterized but are not mutually replaced. The magnetic powder core is widely applied to the fields of power transformers, power inverters, signal transformers, automobile manufacturing industry, magnetic recording materials and the like, and with the development of modern technology, the market demand of the magnetic powder core is also increasing.
In the prior art, copper wires are generally required to be wound on the magnetic powder core when the magnetic powder core is used, but the traditional magnetic powder core is generally of a closed annular structure, holes which continuously penetrate through the magnetic powder core are required to be wound on the copper wires, so that copper wires on the magnetic powder core cannot be wound by means of simple mechanical equipment, the copper wire winding process is complex, the existing magnetic powder core is generally subjected to high-pressure compression molding, the compression molded magnetic powder core is fully attached to the inner wall of a cavity when the magnetic powder core is subjected to compression molding, the magnetic powder core is difficult to be easily taken out, the yield of the compression molding of the magnetic powder core is greatly related to the adding precision of the compression raw materials, the compression molding raw materials of each magnetic powder core are required to be added into a molding cavity for compression after being accurately weighed during compression molding, the compression molding process of the magnetic powder core is discontinuous, and the compression molding speed of the magnetic powder core is required to be further improved.
In view of the technical drawbacks of this aspect, a solution is now proposed.
Disclosure of Invention
The invention aims to provide an EQ type magnetic powder core and a compression molding device thereof, which are used for solving the technical problems that copper wires on the magnetic powder core cannot be wound by means of simple machinery in the prior art, copper wires on the magnetic powder core are inconvenient to wind, the existing magnetic powder core is added into the compression molding device after accurate calculation during processing, the magnetic powder core is tightly attached to the inner wall of a cavity after compression molding, the magnetic powder core is inconvenient to take out from a mold, the continuity and automation degree of compression molding of the magnetic powder core are low, and the molding rate of the magnetic powder core is required to be further improved.
The aim of the invention can be achieved by the following technical scheme:
the EQ type magnetic powder core is obtained by uniformly mixing iron-silicon-aluminum alloy powder and a forming agent according to the weight ratio of 100:8, and then pressing the mixture under the pressure of 1970+/-10 MPa by a pressing forming device, wherein two opposite side edges of a finished product of the EQ type magnetic powder core subjected to pressing forming are provided with openings;
wherein the Fe-Si-Al alloy powder comprises the following elements in percentage by weight: 80-85% of iron, 9-12% of silicon, 6-9% of aluminum and other unavoidable impurity components;
the forming agent comprises the following components in parts by weight: 20-30 parts of phenolic epoxy resin, 10-15 parts of polyamide resin, 10-15 parts of silicone resin, 0.2-0.4 part of dispersing agent and 0.5-1 part of curing agent.
Further, the grain diameter of the Fe-Si-Al alloy powder is 32-36 mu m, the epoxy value of the phenolic epoxy resin is 0.51-0.54mol/100g, and the epoxy equivalent is 185-795g/mol; the polyamide resin is polyamide 610; the silicone resin is methyl phenyl silicone resin, the dispersing agent is one or more of zinc stearate, calcium stearate, magnesium stearate and sodium stearate, and the curing agent is one or more of DMP-30 and BDMA.
A press forming device of an EQ-type magnetic powder core, comprising:
the bottom of one end of the operation plate is fixedly connected with a box body, a plurality of lower dies with forming cavities are arranged on the inner side of the box body, and a feed box is arranged at the top of one end of the operation plate far away from the box body;
the pressing mechanism comprises an upper die and a lifting unit, wherein the upper die is positioned at the top of the operation plate and corresponds to the plurality of lower dies, and the lifting unit is used for driving the plurality of upper dies to lift;
the matching unit comprises a bottom plate arranged at the bottom of the inner side of the box body and a plurality of vertical plates arranged at the top of the bottom plate, and the vertical plates respectively extend to the bottom of the inner side of the forming cavity of the lower die and are mutually matched with the forming cavity;
the auxiliary assembly comprises a plurality of auxiliary mechanisms which are arranged outside the lower die and used for continuously knocking the outer wall of the lower die; and
and the linkage assembly is arranged on the inner side of the box body and used for driving the auxiliary mechanisms to operate simultaneously when the feed box moves along the length direction of the operation plate.
Further, the tops of the plurality of lower dies extend to the top of the operation plate and are flush with the top of the operation plate, and the plurality of lower dies are movably connected with the operation plate through springs.
Further, the workbin is in sliding connection with the bottom of the operation plate, and electric telescopic rods used for driving the workbin to reciprocate along the length direction of the operation plate are arranged on the outer walls of the two sides of the workbin.
Further, the lifting unit comprises a U-shaped bracket fixedly connected to the top of the operation plate and arranged along the width direction of the operation plate, the lifting plate is arranged on the inner side of the U-shaped bracket, a plurality of upper dies are arranged at the bottom of the lifting plate, and the lifting unit further comprises a plurality of groups of hydraulic cylinders arranged on the U-shaped bracket and used for driving the lifting plate to lift.
Further, the auxiliary mechanism comprises a mounting plate fixedly mounted on the outer wall of the lower die and a striking plate and a second spring mounted on the inner side of the mounting plate, a driving block for driving the striking plate to move in the direction away from the lower die to compress the second spring is rotatably mounted on one side of the mounting plate away from the lower die, and a bevel gear I is mounted on one side of the driving block away from the mounting plate.
Further, the linkage assembly comprises an annular sleeve which is rotatably sleeved outside the lower die, a bevel gear ring is fixedly connected to the top of the annular sleeve, a plurality of arc racks matched with the bevel gear ring are arranged at the bottom of the annular sleeve, the linkage assembly further comprises a transverse shaft I which is rotatably arranged on the inner side of the box body and arranged along the width direction of the operation plate, a plurality of turbines which are sleeved on the transverse shaft I, and a worm which is arranged at the bottom of the operation plate and corresponds to the turbines, the turbines are respectively arranged corresponding to the annular sleeve, a bevel gear II meshed with the bevel gear ring is arranged at one end of the worm through a transmission shaft, and the transverse shaft I is matched with the feed box through a linkage unit.
Further, the linkage unit comprises racks fixedly installed on two sides of the bottom of the feed box and first gears sleeved outside two ends of the first transverse shaft respectively, and the top ends of the first gears extend to the top of the operation plate and are meshed with the two racks respectively.
Further, a cross shaft II is arranged on the inner side of the box body, a circular plate which is arranged corresponding to the turbines is arranged on the cross shaft II, a plurality of teeth meshed with the turbines are fixedly connected to the outer ring of the circular plate, a gear lack is arranged on one side of the circular plate, and a connecting plate matched with the gear lack is fixedly connected to the top of one end of the bottom plate, which is close to the gear lack.
The invention has the following beneficial effects:
1. according to the EQ type magnetic powder core compression molding device, the operation plate, the first spring, the feed box, the compression mechanism and the lower die are matched with each other, so that the EQ type magnetic powder core compression raw material is conveniently added into the molding cavity of the lower die, and when the EQ type magnetic powder core is compressed, the vertical plate is matched with the upper die to form the combined compression of the mixture in the molding cavity, so that the upper surface and the lower surface of the EQ type magnetic powder core are simultaneously subjected to compression force in the compression process, the stress uniformity of the EQ type magnetic powder core is further ensured, and the compression effect of the EQ type magnetic powder core is improved.
2. The EQ type magnetic powder core compression molding device of the invention can drive a plurality of impact plates to move away from a lower die to store force for a plurality of springs II when a feed box moves towards the lower die, impact the lower die after the force storage is finished, form high-frequency vibration on the lower die, and the circular plate, the gear lack and the connecting plate are mutually matched, so that when the feed box moves towards the lower die, the bottom plate is driven to move upwards, and the EQ type magnetic powder core finished product in a molding cavity can be smoothly pushed out to the top of an operation plate along with the high-frequency vibration caused by the impact of the impact plates, the bottom plate and the vertical plate can be lowered when the EQ type magnetic powder core finished product is pushed out to one end of the lower die away from the feed box, the inner side of the forming cavity is conveniently filled with the mixture in the material box, the material box keeps moving until finished products of the EQ type magnetic powder cores are pushed onto the conveying belt while feeding, on one hand, the EQ type magnetic powder cores are conveniently conveyed, on the other hand, the material box keeps moving, the lower die can always keep high-frequency vibration when pressing raw materials are added into the forming cavity, air in the forming cavity is discharged, a sufficient amount of pressing raw materials can be added into the forming cavity each time, the pressing yield of the EQ type magnetic powder cores is improved, and when the EQ type magnetic powder cores are pressed, the pressing forming device integrates automatic feeding, automatic pressing, automatic discharging and conveying into a whole, continuous automatic processing is realized, and the pressing forming rate of the EQ type magnetic powder cores and the forming quality of the EQ type magnetic powder cores are improved.
3. The EQ type magnetic powder core with good saturated magnetic induction intensity is prepared by controlling the proportion of the iron-silicon-aluminum alloy powder and the forming agent and limiting the particle size and the compression forming pressure of the iron-silicon-aluminum alloy powder, the saturated magnetic induction intensity of the finished product of the EQ type magnetic powder core prepared by detecting the invention reaches 1.25+/-0.1T, the saturated magnetic induction intensity of the EQ type magnetic powder core is greatly improved compared with that of the traditional magnetic powder core, openings are formed on two opposite sides of the EQ type magnetic powder core, copper wires are conveniently wound on the EQ type magnetic powder core, compared with the traditional magnetic powder core, the EQ type magnetic powder core needs to be continuously penetrated into a central hole of the magnetic powder core when copper wires are generated, the copper wires can be wound from openings on two opposite sides of the EQ type magnetic powder core, a mechanical winding can be introduced, a copper wire winding procedure is simplified, meanwhile, the cylindrical in the middle of the EQ magnetic core enables the winding resistance to be smaller, the plane shape of the EQ type magnetic core is more suitable for the inductor design with limited volume, compared with other shapes, the EQ shape provides better space use and improves the magnetic core heat dissipation performance, and the same magnetic core heat dissipation performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a finished product of an EQ-type magnetic powder core in the present invention;
FIG. 2 is a schematic view of the whole structure of the press forming device of the present invention;
FIG. 3 is a schematic elevational cross-sectional view of a press molding apparatus of the present invention;
FIG. 4 is a schematic view of a right-side cross-sectional structure of a press forming apparatus according to the present invention;
FIG. 5 is a schematic top view of the press forming apparatus of the present invention with the press mechanism removed;
FIG. 6 is a schematic perspective view of a lower mold according to the present invention;
FIG. 7 is an enlarged schematic view of the structure of FIG. 2 according to the present invention;
FIG. 8 is a schematic top cross-sectional view of the lower mold of the present invention;
FIG. 9 is a schematic view of the structure of the first bevel gear and the transmission block according to the present invention;
fig. 10 is a schematic view of the structure of the annular sleeve in the present invention.
In the figure: 1000. EQ-type magnetic powder core finished product; 100. an operation panel; 101. a case; 200. a lower die; 201. a connecting block; 202. a first spring; 203. a riser; 204. a bottom plate; 300. an upper die; 301. a U-shaped bracket; 302. a lifting plate; 303. a hydraulic cylinder; 400. a feed box; 401. an electric telescopic rod; 500. a mounting plate; 501. a guide rod; 502. an impingement plate; 503. a second spring; 504. a transmission rod; 505. a driving block; 506. a transmission groove; 507. bevel gears I; 600. a first transverse axis; 601. a first gear; 602. a rack; 603. a turbine; 604. a worm; 605. bevel gears II; 606. an annular sleeve; 607. conical toothed ring; 608. an arc-shaped rack; 700. a second transverse axis; 701. a circular plate; 702. a gear-missing; 703. a connector plate.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, an EQ-shaped magnetic powder core of the present embodiment is obtained by uniformly mixing iron-silicon-aluminum alloy powder with a particle size of 32-36 μm and a forming agent according to a weight ratio of 100:8, and then pressing the mixture under a pressure of 1970±10MPa by a press forming device, wherein two opposite sides of the EQ-shaped magnetic powder core finished product 1000 obtained by press forming have openings;
the Fe-Si-Al alloy powder comprises the following elements in percentage by weight: 80% of iron, 11% of silicon, 8% of aluminum and other unavoidable impurity components;
the forming agent comprises the following components in parts by weight: 20 parts of phenolic epoxy resin with an epoxy value of 0.51-0.54mol/100g and an epoxy equivalent of 185-795g/mol, 610 parts of polyamide, 10 parts of methyl phenyl silicone resin, 0.2 part of zinc stearate and 0.5 part of DMP-30.
Example 2
Referring to fig. 1, an EQ-shaped magnetic powder core of the present embodiment is obtained by uniformly mixing iron-silicon-aluminum alloy powder with a particle size of 32-36 μm and a forming agent according to a weight ratio of 100:8, and then pressing the mixture under a pressure of 1970±10MPa by a press forming device, wherein two opposite sides of the EQ-shaped magnetic powder core finished product 1000 obtained by press forming have openings;
the Fe-Si-Al alloy powder comprises the following elements in percentage by weight: iron 83%, silicon 10%, aluminum 6% and other unavoidable impurity constituents;
the forming agent comprises the following components in parts by weight: 25 parts of phenolic epoxy tree with an epoxy value of 0.51-0.54mol/100g and an epoxy equivalent of 185-795g/mol, 610 parts of polyamide, 13 parts of methyl phenyl silicone, 0.2 part of calcium stearate and 0.7 part of BDMA.
Example 3
Referring to fig. 1, an EQ-shaped magnetic powder core of the present embodiment is obtained by uniformly mixing iron-silicon-aluminum alloy powder with a particle size of 32-36 μm and a forming agent according to a weight ratio of 100:8, and then pressing the mixture under a pressure of 1970±10MPa by a press forming device, wherein two opposite sides of the EQ-shaped magnetic powder core finished product 1000 obtained by press forming have openings;
the Fe-Si-Al alloy powder comprises the following elements in percentage by weight: iron 84%, silicon 9%, aluminum 6% and other unavoidable impurity constituents;
the forming agent comprises the following components in parts by weight: 30 parts of phenolic epoxy resin with an epoxy value of 0.51-0.54mol/100g and an epoxy equivalent of 185-795g/mol, 15 parts of polyamide 610, 15 parts of methyl phenyl silicone resin, 0.4 part of magnesium stearate and 30 parts of DMP-30.
Example 4
Referring to fig. 2, 3, 5 and 6, a compression molding device of an EQ-type magnetic powder core of the present embodiment includes:
the operation panel 100, the bottom of one end of the operation panel 100 is fixedly connected with the box body 101, the inner side of the box body 101 is provided with a plurality of lower dies 200 with forming cavities, the top of one end of the operation panel 100 far away from the box body 101 is provided with a feed box 400, the feed box 400 is in sliding connection with the bottom of the operation panel 100, and the outer walls of two sides of the feed box 400 are respectively provided with an electric telescopic rod 401 for driving the feed box to reciprocate along the length direction of the operation panel 100;
install the material lid at the one end top of workbin 400 (not annotate in the drawing), open the material lid and conveniently add the mixture of magnetic core compression moulding into workbin 400, the hourglass silo (not annotate in the drawing) has been seted up to the one end bottom that workbin 400 is close to bed die 200, and the both sides bottom inner wall of workbin 400 all has the inclined plane that sets up towards hourglass silo direction slope, two electric telescopic handle 401 extend, promote the interior side that the mixture in workbin 400 drops the shaping cavity when workbin 400 moves to directly over bed die 200 to bed die 200, realize carrying out the simultaneous feed to a plurality of bed dies 200.
The top of the operation plate 100 is provided with communication holes which are arranged corresponding to the plurality of lower dies 200, the tops of the plurality of lower dies 200 respectively penetrate through the plurality of communication holes to extend to the top of the operation plate 100 and are flush with the top surface of the operation plate 100, the inner wall of the communication hole is provided with a plurality of vertical grooves, the inner side of each vertical groove is provided with a connecting block 201 and a first spring 202, the connecting block 201 is positioned at the top of the first spring 202, and one end of each connecting block 201 extends to the outside of each vertical groove and is fixedly connected with the outer wall of the corresponding lower die 200;
a bottom plate 204 is arranged at the bottom of the inner side of the box body 101, a plurality of vertical plates 203 are fixedly connected to the top of the bottom plate 204, the plurality of vertical plates 203 respectively extend to the bottom of the inner side of a forming cavity of the lower die 200, and one end of each vertical plate 203 positioned at the inner side of the forming cavity is mutually matched with the forming cavity;
a U-shaped bracket 301 arranged along the width direction of the operation plate 100 is fixedly connected to the top of the operation plate 100, a lifting plate 302 is arranged on the inner side of the U-shaped bracket 301, a plurality of groups of hydraulic cylinders 303 for driving the lifting plate 302 to lift are arranged on the U-shaped bracket 301, and a plurality of upper dies 300 which are arranged corresponding to the plurality of lower dies 200 are arranged at the bottom of the lifting plate 302;
a pressure gauge (not shown) for indicating the internal pressure of the forming cavity is installed on the U-shaped bracket 301, the hydraulic cylinders 303 are multi-stage hydraulic cylinders, the hydraulic cylinders 303 synchronously extend, push the lifting plate 302 to descend, enable the upper die 300 to enter the inner side of the forming cavity of the lower die 200, squeeze the mixture in the forming cavity, synchronously push the lower die 200 to move downwards while the upper die 300 moves downwards, compress the springs 202, enable the risers 203 to move upwards relative to the descending lower die 200 at the moment, enable the risers 203 to cooperate with the upper die 300, squeeze the mixture in the forming cavity until the pressure in the forming cavity reaches 1970+/-10 MPa, and press the mixture into the finished product 1000 of the EQ-type magnetic powder core.
Example 5
Referring to fig. 3-9, a compacting device for an EQ-type magnetic powder core of the present embodiment includes:
the auxiliary assembly comprises a plurality of auxiliary mechanisms which are arranged outside the lower die 200 and used for continuously knocking the outer wall of the lower die 200, and the plurality of auxiliary mechanisms positioned on the same lower die 200 are arranged in an annular array with the axle center of the lower die 200;
the auxiliary mechanism comprises a mounting plate 500 fixedly mounted on the outer wall of the lower die 200 and of a U-shaped structure, a plurality of guide rods 501 which are horizontally arranged are fixedly connected to the inner side of the mounting plate 500, a second spring 503 is movably sleeved outside the guide rods 501, an impact plate 502 is arranged on the inner side of the mounting plate 500, the impact plate 502 is positioned at one end, close to the lower die 200, of the second springs 503, the impact plate 502 is movably sleeved outside the guide rods 501, a driving block 505 is rotatably mounted on one side, away from the lower die 200, of the mounting plate 500, the driving block 505 is of a cylindrical structure, a bevel gear one 507 is mounted on one side, away from the mounting plate 500, of the driving block 505, an annular transmission groove 506 which is obliquely arranged is formed in the outer wall of the driving block 505, a transmission rod 504 is fixedly connected to one side, close to the driving block 502, of the transmission rod 504, away from the impact plate 502, extends to the outer side of the mounting plate 500 and is in sliding connection with the transmission groove 506;
when the first bevel gear 507 rotates to drive the driving block 505 to rotate, the driving rod 504 drives the impact plate 502 to move towards a direction far away from the lower die 200, the second springs 503 are compressed, then the first bevel gear 507 is released, under the elastic action of the second springs 503, the impact plate 502 moves rapidly to the lower die 200 and impacts with the outer wall of the lower die 200, the impact plates 502 are sequentially contacted with the outer wall of the lower die 200 in an impact manner, high-frequency vibration is formed on the lower die 200, the movement between the mixture can be promoted when the mixture enters the inner side of the forming cavity, the formation of pores in the forming cavity is avoided, the filling of the forming cavity each time is ensured, the rate of finished products of the compression forming of the EQ type magnetic powder cores is improved, and when the finished products of the formed EQ type magnetic powder cores are taken out from the forming cavity, the friction between the finished products of the EQ type magnetic powder cores and the forming cavity is reduced by the high-frequency vibration lower die 200, and the finished products of the EQ type magnetic powder cores are taken out from the forming cavity conveniently.
Example 6
Referring to fig. 3-4 and fig. 7-10, a compacting device for an EQ-type magnetic powder core of the present embodiment includes:
the linkage assembly is arranged on the inner side of the box body 101 and used for driving a plurality of auxiliary mechanisms to operate simultaneously when the feed box 400 moves along the length direction of the operation plate 100, the linkage assembly comprises an annular sleeve 606 rotationally sleeved outside the lower die 200, the top of the annular sleeve 606 is fixedly connected with a bevel gear ring 607, a plurality of arc racks 608 matched with the first bevel gear ring 507 are arranged at the bottom of the annular sleeve 606, the linkage assembly further comprises a first transverse shaft 600 rotationally arranged on the inner side of the box body 101 and arranged along the width direction of the operation plate 100, a plurality of turbines 603 arranged on the first transverse shaft 600 and a worm 604 arranged at the bottom of the operation plate 100 and corresponding to the turbines 603, one end of the worm 604 is provided with a second bevel gear 605 meshed with the bevel gear ring 607 through a transmission shaft (not labeled in the figure);
both ends of the first transverse shaft 600 are rotationally connected with the inner wall of the box 101, the turbines 603 are rotationally arranged on the first transverse shaft 600 through the ratchet wheels (not shown), the turbine 603 can be driven to rotate anticlockwise when the first transverse shaft 600 rotates anticlockwise, the turbine 603 can be kept static relative to the box 101 when the first transverse shaft 600 rotates anticlockwise, the worm 604 is driven to rotate when the first transverse shaft 600 rotates anticlockwise, the bevel gear 605 is driven to rotate through the transmission shaft, the bevel gear ring 607 meshed with the bevel gear ring is driven to rotate, the annular sleeve 606 is driven to rotate, the arc racks 608 at the bottom of the annular sleeve 606 rotate with the axis of the annular sleeve 606 as the circle center, when the arc racks 608 are meshed with the first bevel gear 507, the bevel gear 507 is driven to rotate, the driving block 505 is driven to be far away from the lower die 200, when the arc racks 608 are about to separate from the first bevel gear 507, the second spring 503 completes storage force, after the arc racks 608 are separated from the first bevel gear 507, the first bevel gear 507 loses impact limit, the impact plate 502 can move downwards under the action of the plurality of second springs 503, the die 502 is driven to form impact plates with the same time, and the adjacent two adjacent impact plates 502 can not coincide with each other, and the adjacent time periods of the two adjacent impact plates can be formed, and the adjacent time can not vibrate, and the two adjacent time periods can be regulated, and the two die plates can be formed.
The first transverse shaft 600 is matched with the feed box 400 through a linkage unit, the linkage unit comprises racks 602 fixedly arranged on two sides of the bottom of the feed box 400 and first gears 601 respectively sleeved outside two ends of the first transverse shaft 600, and the top ends of the first gears 601 extend to the top of the operation plate 100 and are respectively meshed with the two racks 602;
two containing grooves (marked in the figure) are formed in the top surface of the operation plate 100 along the length direction of the operation plate, two racks 602 are respectively located on the inner sides of the two containing grooves, the top ends of two first gears 601 respectively extend to the inner sides of the two containing grooves and are meshed with the racks 602, and when the electric telescopic rod 401 pushes the feed box 400 to move along the length direction of the operation plate 100, the racks 602 and the first gears 601 move relatively, so that the two first gears 601 are driven to synchronously rotate at the same time, and the first transverse shaft 600 is driven to rotate.
Example 7
Referring to fig. 3-4, a compacting device for an EQ-type magnetic powder core of the present embodiment includes:
a second transverse shaft 700 is mounted on the inner side of the box body 101, a circular plate 701 corresponding to the turbines 603 is mounted on the second transverse shaft 700, a plurality of teeth meshed with the turbines 603 are fixedly connected to the outer ring of the circular plate 701, a gear-missing part 702 is arranged on the outer side of one side of the circular plate 701, and a connecting plate 703 matched with the gear-missing part 702 is fixedly connected to the top of one end of the bottom plate 204, close to the circular plate 701.
The two ends of the cross shaft II 700 are rotationally connected with the inner wall of the box body 101, one side of the connecting plate 703, which is close to the circular plate 701, is provided with a plurality of tooth grooves (not shown) which are mutually matched with the gear deficiency 702, when the material box 400 moves towards the lower die 200, the rack 602 and the gear I601 relatively move, the cross shaft I600 is driven to rotate anticlockwise, the cross shaft I600 drives the turbine 603 to synchronously rotate anticlockwise through ratchet transmission, the circular plate 701 is driven to rotate clockwise, the cross shaft II 700 is driven to synchronously rotate, the gear deficiency 702 is driven to synchronously rotate, when the gear deficiency 702 is meshed with the tooth grooves on the connecting plate 703, the gear deficiency 702 rotates, the connecting plate 703 is driven to move upwards, so as to drive the bottom plate 204 to move upwards, and further enable the plurality of vertical plates 203 to move upwards, the finished EQ-type magnetic powder core products in the forming cavity are ejected to the top of the operation plate 100, the material box 400 moving towards the lower die 200 pushes the finished EQ-type magnetic powder core products to the top of one end of the operation plate 100 far away from the material box 400, the gear deficiency section of the connecting plate 703 is driven to rotate clockwise, when the bottom plate 703 is driven to mutually coincide with the gear deficiency of the gear, when the gear deficiency 702 is driven to mutually rotate, when the gear deficiency of the gear deficiency in the gear deficiency 702 is meshed with the plate 703, when the gear deficiency in the gear in the direction is meshed with the plate 703, and the tooth in the gear deficiency, when the tooth deficiency, and the tooth in the direction, when the tooth deficiency is meshed with the tooth in the material, and the material in the direction, and the direction;
a conveyor belt is installed at one end of the operation plate 100 away from the bin 400, so that the formed EQ-shaped magnetic powder core can be conveniently conveyed to the next processing procedure for reprocessing.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. The EQ type magnetic powder core is characterized in that after being uniformly mixed by iron-silicon-aluminum alloy powder and a forming agent according to the weight ratio of 100:8, the EQ type magnetic powder core is obtained by pressing the iron-silicon-aluminum alloy powder and the forming agent under the pressure of 1970+/-10 MPa by a pressing forming device, and two opposite side edges of a finished product (1000) of the EQ type magnetic powder core which is formed by pressing are provided with openings;
wherein the Fe-Si-Al alloy powder comprises the following elements in percentage by weight: 80-85% of iron, 9-12% of silicon, 6-9% of aluminum and other unavoidable impurity components;
the forming agent comprises the following components in parts by weight: 20-30 parts of phenolic epoxy resin, 10-15 parts of polyamide resin, 10-15 parts of silicone resin, 0.2-0.4 part of dispersing agent and 0.5-1 part of curing agent;
the particle size of the Fe-Si-Al alloy powder is 32-36 mu m, the epoxy value of the phenolic epoxy resin is 0.51-0.54mol/100g, and the epoxy equivalent is 185-795g/mol; the polyamide resin is polyamide 610; the silicone resin is methyl phenyl silicone resin, the dispersing agent is one or more of zinc stearate, calcium stearate, magnesium stearate and sodium stearate, and the curing agent is one or more of DMP-30 and BDMA.
2. A press molding device of an EQ-type magnetic powder core, adapted for press molding of an EQ-type magnetic powder core according to claim 1, characterized by comprising:
the operation plate (100), one end bottom of the operation plate (100) is fixedly connected with a box body (101), a plurality of lower dies (200) with forming cavities are arranged on the inner side of the box body (101), and a feed box (400) is arranged at the top of one end, far away from the box body (101), of the operation plate (100);
the pressing mechanism comprises a plurality of upper dies (300) which are positioned at the top of the operation plate (100) and are arranged corresponding to the lower dies (200), and a lifting unit for driving the plurality of upper dies (300) to lift;
the matching unit comprises a bottom plate (204) arranged at the bottom of the inner side of the box body (101) and a plurality of vertical plates (203) arranged at the top of the bottom plate (204), wherein the vertical plates (203) respectively extend to the bottom of the inner side of a forming cavity of the lower die (200) and are matched with the forming cavity;
an auxiliary assembly including a plurality of auxiliary mechanisms installed outside the lower mold (200) for continuously striking the outer wall of the lower mold (200); and
the linkage assembly is arranged on the inner side of the box body (101) and is used for driving a plurality of auxiliary mechanisms to operate simultaneously when the feed box (400) moves along the length direction of the operation plate (100);
the auxiliary mechanism comprises a mounting plate (500) with a U-shaped structure fixedly mounted on the outer wall of the lower die (200), an impact plate (502) and a second spring (503) which are mounted on the inner side of the mounting plate (500), a driving block (505) for driving the impact plate (502) to move away from the lower die (200) to compress the second spring (503) is rotatably mounted on one side of the mounting plate (500) away from the lower die (200), and a bevel gear I (507) is mounted on one side of the driving block (505) away from the mounting plate (500);
the linkage assembly comprises an annular sleeve (606) which is sleeved outside the lower die (200) in a rotating mode, a bevel gear ring (607) is fixedly connected to the top of the annular sleeve (606), a plurality of arc racks (608) which are matched with the bevel gear ring (507) are arranged at the bottom of the annular sleeve (606), the linkage assembly further comprises a transverse shaft I (600) which is rotatably arranged on the inner side of the box body (101) and is arranged along the width direction of the operation plate (100), a plurality of turbines (603) which are sleeved on the transverse shaft I (600) and a worm (604) which is arranged at the bottom of the operation plate (100) in a sleeved mode and is arranged corresponding to the turbines (603), the turbines (603) are respectively arranged corresponding to the annular sleeves (606), a bevel gear II (605) which is meshed with the bevel gear ring (607) is arranged at one end of the worm (604) through a transmission shaft, and the transverse shaft I (600) is matched with the feed box (400) through a linkage unit.
3. A pressing and forming device of EQ-shaped magnetic powder core according to claim 2, characterized in that the top parts of the plurality of lower dies (200) extend to the top part of the operation plate (100) and are flush with the top part of the operation plate (100), and the plurality of lower dies (200) are movably connected with the operation plate (100) by springs.
4. A compacting apparatus for EQ-shaped magnetic powder cores according to claim 2, characterized in that the magazine (400) is in sliding contact with the bottom of the operation plate (100), and that the outer walls of both sides of the magazine (400) are each provided with an electric telescopic rod (401) for driving the same to reciprocate in the longitudinal direction of the operation plate (100).
5. A compacting apparatus for an EQ-shaped magnetic powder core according to claim 2, characterized in that the lifting unit comprises a U-shaped bracket (301) fixedly connected to the top of the operation plate (100) and arranged in the width direction thereof, a lifting plate (302) is mounted on the inner side of the U-shaped bracket (301), a plurality of upper molds (300) are mounted on the bottom of the lifting plate (302), and the lifting unit further comprises a plurality of groups of hydraulic cylinders (303) mounted on the U-shaped bracket (301) for driving the lifting plate (302) to lift.
6. A pressing and forming device for an EQ-shaped magnetic powder core according to claim 2, characterized in that the linkage unit comprises racks (602) fixedly mounted on both sides of the bottom of the bin (400) and first gears (601) respectively sleeved on both ends of the first transverse shaft (600), wherein the top ends of the two first gears (601) extend to the top of the operation panel (100) and are respectively meshed with the two racks (602).
7. The pressing forming device of the EQ-shaped magnetic powder core according to claim 2, characterized in that a cross shaft two (700) is installed on the inner side of the box body (101), a circular plate (701) corresponding to the plurality of turbines (603) is installed on the cross shaft two (700), a plurality of teeth meshed with the turbines (603) are fixedly connected on the outer ring of the circular plate (701), a gear lack (702) is arranged on one side of the circular plate (701), and a connecting plate (703) matched with the gear lack (702) is fixedly connected on the top of one end of the bottom plate (204) close to the gear lack (702).
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