CN103337358B - Transformer radial pattern iron core column shaped device - Google Patents
Transformer radial pattern iron core column shaped device Download PDFInfo
- Publication number
- CN103337358B CN103337358B CN201310265346.XA CN201310265346A CN103337358B CN 103337358 B CN103337358 B CN 103337358B CN 201310265346 A CN201310265346 A CN 201310265346A CN 103337358 B CN103337358 B CN 103337358B
- Authority
- CN
- China
- Prior art keywords
- mold cavity
- cavity plate
- mould
- compressing tablet
- shaped device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
A kind of transformer radial pattern iron core column shaped device, comprises a mould bases, polylith mold cavity plate, two pieces of mould end plates and overlaps wafer assembly more.Mould bases framedly to be formed by two, polylith mold cavity plate and two pieces of mould end plates along two framed length directions, compartment, vertically to being fixedly installed.The middle part of these mold cavity plate all has a semicircular recess, and all these semicircular recess form the semicircle die cavity receiving silicon steel sheet sheet stock, and two pieces of mould end plates split on the end face of two framed links, form the baffle plate of described semicircle die cavity.The top of every block mold cavity plate both sides arranges a set of wafer assembly respectively.This device not only can make the iron core column of any specification, and the iron core column made has high, all silicon steel sheet sheet stock of lamination coefficient and effective magnetic conduction cross section and width is good to the magnetic line of force depth of parallelism, eddy current loss is little, and the product utilizing it to produce affects by alternating current fundamental in alternating magnetic field application, also can not produce between sheet and vibrate and send the advantage of electromagnetic noise.
Description
[technical field]
The invention belongs to a kind of conducting magnet core shaped device, especially belong to a kind of shaped device making transformer radial pattern iron core column.
[background technology]
In known three kinds of transformer cores, the iron core of the opposing parallel lamination of Radiation laminated core or evolvent type lamination, because it is in marginalisation effect process, magnetic derivation direction parallels with silicon steel sheet lamination direction, thus have eddy current loss low, local there will not be superheating phenomenon and the significant advantage of energy-saving effect.Before the present invention makes, owing to there is no desirable shaped device, the also unable radial conducting magnet core post product produced for transformer, and only have the radial iron core cake for reactor to come out.
Fig. 1 schematically illustrates a kind of cross section structure of radial conducting magnet core cake, this iron core cake is made up of the silicon steel sheet sheet stock group of 16 unit, often in group, silicon steel sheet sheet stock is decremented to most arrow gauge c from most wide sheet b equal difference, all sheet stocks with centre bore a for the center of circle radially radial squash type arrangement.During making, artificial screening, classification, vertically to 16 unit sheet stock groups along the circumferential direction being inserted according to the order of sequence in a prefabricated casting solidification mould, casting resin filler Post RDBMS is shaping, obtains a radial iron-cored cake.The method: 1, because sheet stock is silicon steel coating agent which has to be dissolved in alcohol before use, its thickness only has about 0.3mm usually, the thin rigidity of sheet is poor, when sheet stock exceedes certain altitude, (being generally 500mm) just cannot vertically to lamination, therefore, be only suitable for the iron core cake making certain altitude, and the column Radiation conducting magnet core post for transformer can not be made.2, during lamination, due to without footpath outward force pretension, loose between sheet, only rely on resin extender to fill curing molding, thus cannot reach the lamination coefficient required by design, effective magnetic conduction cross section ratio is low.3, the coefficient of expansion due to silicon steel sheet and resin extender is inconsistent, and after temperature raises, resin extender can produce be full of cracks, thus has a strong impact on the reliability service of equipment.4, as seen from Figure 1, after shaping, one is only have most wide sheet b to be with centre bore a for the center of circle arranges radially, and other silicon steel sheet relative centre hole a exists a drift angle, namely there is drift angle with the width in Fig. 2 to magnetic line of force d, thus there is the magnetic line of force through the large defect of silicon steel sheet eddy current loss.Two is that its periphery circle can not form a positive round, and sheet stock is uneven, loose between sheet, thus utilizes its equipment made to affect by alternating current fundamental in alternating magnetic field application process, easily produces vibration and send electromagnetic noise between sheet.From above-mentioned 1-4 point, we can draw the following conclusions: the unable making of the method transformer radial pattern of the present invention iron core column, and the iron-cored cake utilizing the method to make also exists a lot of defect.
[summary of the invention]
For solving the problems of the technologies described above, the present invention aims to provide a kind of transformer radial pattern iron core column shaped device, rely on this shaped device, not only can make the radial pattern iron core column of any specification for transformer, and this post has high, all silicon steel sheet sheet stock of lamination coefficient and effective magnetic conduction cross section and width to the good advantage of the magnetic line of force depth of parallelism, therefore conducting magnet core eddy current loss can effectively be reduced, and then product is affected by alternating current fundamental in alternating magnetic field application, also can not produce vibration between sheet and send electromagnetic noise.
For achieving the above object, present invention employs following technical proposals, this transformer radial pattern iron core column shaped device, is characterized in that: comprise a mould bases, and the polylith mold cavity plate, the two pieces of mould end plates that are arranged on described mould bases and overlap wafer assembly more; Described mould bases two of being flexibly connected by symmetrical, axial one end are framed to be formed; Along these two framed length directions, compartment, vertically to being fixedly installed described polylith mold cavity plate and two pieces of mould end plates respectively; The middle part of these mold cavity plate all has a semicircular recess, and all these semicircular recess form the semicircle die cavity receiving silicon steel sheet sheet stock; Two pieces of described mould end plates split on the end face of described two framed links, form the baffle plate of described semicircle die cavity; The top of described every block mold cavity plate both sides arranges a set of wafer assembly respectively.
As when preferably specifically implementing, described two are framedly made up of two channel-section steels and some adjusting screw(rod)s respectively, and these adjusting screw(rod)s are arranged on two channel-section steels through fastener separation formula, parallel shape.
As when preferably specifically implementing, described two are framedly flexibly connected by two cover hinge assemblies, and this often overlaps hinge assembly and is made up of two panels leaf of hinge hinge axis; The side of described two panels leaf of hinge is separately fixed on two pieces of described mould end plates, and opposite side is hinged by described hinge axis.
As when preferably specifically implementing, be respectively equipped with suspension ring at the free-end of described two channel-section steels.
As when preferably specifically implementing, the both sides of described mold cavity plate and mould end plate are connected into entirety by a core pipe respectively, and, between described mold cavity plate, and the shaft of this core pipe between mold cavity plate and mould end plate overlaps there is a tubular distance piece.
As when preferably specifically implementing, described wafer assembly is made up of compressing tablet, compressing tablet rotating shaft and compressing tablet seat, and compressing tablet seat is fixedly installed in mold cavity plate; Compressing tablet and compressing tablet rotating shaft are single piece, and compressing tablet rotating shaft is vertically in the screw being located on compressing tablet seat.
Beneficial effect: the present invention is directed to prior art and can not make for the practical problem of the radial pattern iron core column of transformer and design.This device utilize two respectively to have a semicircle die cavity and be hinged to one level to place framed, during making, first at the stacked sheet stock of each semicircle mould lumenal levels, form two half radial pattern iron core column blanks and after being fixed by wafer assembly, after matched moulds, form whole post.Tool has the following advantages: 1, owing to adopting horizontal lamination, therefore, as long as framed length and width allow, can complete the making of any specification iron core column.2, the circumferential anchor ring of two semicircle die cavitys is semicircle, the round-formed positive round in the sheet stock periphery being conducive to building up, and improve all magnetic conduction silicon steel sheets and the width depth of parallelism to the magnetic line of force, thus eddy current loss is little.3, conducted oneself with dignity by sheet stock, make the sheet stock of different in width along the semicircle die cavity wall of mold cavity plate and self-assembling formation acromere semicircle, and under the effect of the circumference of compressing tablet tight sheet power, tightness between sheet is met design requirement, and then achieve the object improving lamination coefficient and effective magnetic conduction cross section.Facts have proved, the magnetic conduction power equipment utilizing this iron core column to make, in alternating magnetic field, also to there will not be between sheet vibration and the phenomenon that sends electromagnetic noise even if affect by alternating current fundamental.
For sharpening understanding, the present invention is described in further detail by embodiment below in conjunction with accompanying drawing.
[accompanying drawing explanation]
Fig. 1 is the radial iron core cake cross-sectional structure schematic diagram of a kind of 16 equal portions in prior art.
Fig. 2 is that the width of radial iron core cake is to magnetic line of force distribution situation schematic diagram.
Fig. 3 is the plan structure schematic diagram of one embodiment of the invention.
Fig. 4 be Fig. 3 look up structural representation, depict the structure of tubular distance piece and core pipe in the figure.
Fig. 5 is the structure for amplifying schematic diagram in A portion in Fig. 3.
Fig. 6 is the structure for amplifying schematic diagram in B portion in Fig. 4.
Fig. 7 is the structure for amplifying schematic diagram in C portion in Fig. 4.
Fig. 8 is that structure for amplifying schematic diagram is looked on a left side of Fig. 4.
Fig. 9 is that structure for amplifying schematic diagram is looked on the right side of Fig. 4.
Figure 10 is the state change map of Fig. 9, that is: completed two groups of silicon steel sheet laminations in the figure, and the 3rd group of silicon steel sheet is in lamination way.
Figure 11 is the state change map of Fig. 8, that is: the state after this figure has shown lamination.
Figure 12 is the lamination state change map of Fig. 3.Complete lamination on the left of this figure, and compressing tablet is depressed on silicon steel sheet 9; Right side has completed the lamination of two groups of silicon steel sheets 9.
Figure 13 is the state change map of Fig. 4, completes lamination on the left of this figure; Right side is close to completing lamination.
Figure 14 is the width hoisting process figure after Figure 13 completes whole lamination.
Figure 15 is that Figure 14 lifts end, matched moulds view.
Figure 16 is the structural representation after Figure 15 installs first pre-Zha Quan.
Figure 17 is the plan structure schematic diagram after Figure 16 removes suspension hook and lifting rope.
Figure 18 is the plan structure schematic diagram of pre-Zha Quan in Figure 16.
Figure 19 be Figure 18 look up structural representation.
Figure 20 is that Figure 16 completes all pre-bundle circle colligations, and unloads the structural representation after removing the outer all producing devices of hinge.
Figure 21 utilizes to stand around the structural representation of machine colligation without latitude band.
In figure: centre bore a, most lengthy motion picture b, most short-movie c, width is to magnetic line of force d.Channel-section steel 1, suspension ring 11, mold cavity plate 2, semicircular recess wall 21, compressing tablet 3, compressing tablet rotating shaft 31, compressing tablet seat 32, screw rod 31, mould end plate 4, semicircle orifice 41, tubular distance piece 5, core pipe 51, adjusting screw(rod) 6, leaf of hinge 7, leaf of hinge 71, hinge axis 72, mould end plate 8, silicon steel sheet 9, lamination state silicon steel sheet 91, suspension hook 10, lifting rope 101, pre-bundle circle 20, degree of tightness axle 201, base 30, workbench 301, without latitude band 302, runner 303, elevator 304, column 305.
[embodiment]
Generally speaking, apparatus of the present invention by a mould bases, and are arranged on the polylith mold cavity plate on described mould bases, two pieces of mould end plates and many cover wafer assembly formations.This mould bases two of being flexibly connected by symmetrical, axial one end are framed to be formed; Along these two framed length directions, compartment, vertically to being fixedly installed described polylith mold cavity plate and two pieces of mould end plates respectively.The middle part of these mold cavity plate all has a semicircular recess, and all these semicircular recess form the semicircle die cavity receiving silicon steel sheet sheet stock; Two pieces of described mould end plates split on the end face of described two framed links, form the baffle plate of described semicircle die cavity; The top of described every block mold cavity plate both sides arranges a set of wafer assembly respectively.It should be noted that: look the difference making object size, framed length and width degree, mold cavity plate, the large smallest number of mould end plate, and the parameter such as wafer assembly quantity can do corresponding change, therefore, theoretically, this device can make the radial pattern iron core column of any specification.
For sharpening understanding, below in conjunction with accompanying drawing, shaped device of the present invention is described further.See Fig. 3, Fig. 4.Mould bases is axially hinged and integral by symmetrically arranged two framed hinge assemblies through shown in A portion.Eachly framedly to be made up of two channel-section steels, 1, three adjusting screw(rod)s 6, the width that arranges of two channel-section steels 1 sets depending on the hows and whys adjusting screw(rod) 6, and make with the iron core column meeting different-diameter, length is determined as required, finally determines the size of semicircle die cavity.The effect one of adjusting screw(rod) 6 is that two channel-section steels 1 are fixed into entirety, and two is the spacing being adjusted two channel-section steels 1 as required by nut 61, to receive corresponding mold cavity plate 2 and mould end plate 4 and 8.Along the length direction of channel-section steel 1, at equal intervals, vertically to arranging mold cavity plate 2, the spacing of mold cavity plate 2 is guaranteed by the tubular distance piece 5 on core pipe 51, and tubular distance piece 5 is set on the shaft of core pipe 51.The two ends of this core pipe 51 respectively with nut tension, thus make each framed on mould end plate and mold cavity plate be in Pre strained state.The visual end of love of quantity of core pipe 51 and tubular distance piece 5 thereof.In this example, each framed on five pieces of mold cavity plate 2 and one piece of mould end plate 4 or 8 are set at equal intervals, mould end plate 4 or 8 is positioned at hinged end, and its effect is axially aligned by sheet stock when being convenient to lamination.In the die cavity both sides of every block mold cavity plate 2, a set of Anchor plate kit is set respectively.Suspension ring 11 are set at the free end of every root channel-section steel 1, conveniently lift matched moulds.
Fig. 5 and Fig. 6 shows two framed articulated structures.Two cover hinge assemblies are arranged between two pieces of mould end plates 4 and 8.Often overlap hinge assembly to be made up of leaf of hinge 7 and 71, hinge axis 72, leaf of hinge 7 and 71 is separately fixed on mould end plate 4 and 8.Two pieces of mould end plates 4 and 8 are separately positioned on the end face of two framed hinged ends, draw fixing by core pipe 5.
Fig. 7 shows the structure of wafer assembly.Often overlap wafer assembly to be made up of compressing tablet 3, compressing tablet rotating shaft 31, compressing tablet seat 32 and screw rod 31.Compressing tablet seat 32 is fixed on the side, top of mold cavity plate 2, and turn screw rod 31 can make compressing tablet 3 oscilaltion, and compressing tablet 3 can around the horizontal rotation of screw rod 31.
See Fig. 8.Polylith mold cavity plate 2 is located by core pipe 51, and adjusting screw(rod) 6 arranges width for what regulate two channel-section steels 1.The middle part of every block mold cavity plate 2 has semicircular recess, and described semicircular recess forms the semicircle die cavity of an axis, semicircular recess wall 21 semicircular in shape.The bottom of semicircle die cavity is the inwall of mould end plate 4, and semicircle orifice 41(can be established in the middle part of it also can not to establish).The rational height of compressing tablet 3 should match with mould end plate 4 (be in figure and mould end plate 4 parallel position, in fact, should be in the position, outer of mould end plate 4 before lamination).
See Fig. 9.The difference of Fig. 9 and Fig. 8 be wafer assembly block by mold cavity plate 2 in (left side that in the present embodiment, wafer assembly is installed in mold cavity plate 2), therefore, in the Fig. 9 observed from right to left, cannot see wafer assembly.
For understanding the present invention further, below in conjunction with accompanying drawing, by the manufacturing process of an Examples detail iron core column.
This routine iron core column setting requirement is: external diameter 600mm, internal diameter 60mm, length 2200mm, the wide differential 10mm of sheet, magnetic conduction silicon steel sheet thickness 0.35mm, lamination coefficient 0.97, silicon steel sheet group number 60 unit.Its making step is as follows:
1, a mould bases is made.Get four channel-section steels 1, every two channel-section steels by three adjusting screw(rod)s 6 through securing member form one framed.Each framed at equal intervals, vertically to establishing 5 pieces of mold cavity plate 2 and 1 piece of mould end plate 4, mold cavity plate is fixed on channel-section steel by securing member, and in the middle part of the plate body of every block mold cavity plate, through hole is offered in both sides, core pipe 51 is through these through holes, and core length of tube is greater than 2200mm.A set of wafer assembly is established in the both sides of every block mold cavity plate.Core pipe pipe shaft between mold cavity plate, between mold cavity plate and mould end plate is nested with a tubular distance piece 5, guarantees that mold cavity plate and mould end plate are in vertical state.The outer end of every root core pipe is located by fastening nuts.The radius of the semicircular recess in the middle part of mold cavity plate is 300mm, and semicircle orifice 41 radius of mould end plate is 30mm.Two framed hinged by two cover hinge assemblies.
2, cutting silicon steel sheet.Take group as unit, arrange the silicon steel sheet of 60 unit.
Require known according to setting: all silicon steel sheet length is 2200mm.In each unit the width of silicon steel sheet at different levels and sheet number as follows:
(1) A-class picture (the most wide sheet b namely shown in Fig. 1):
Width: 270mm(computational methods: external diameter 600 ÷ 2-internal diameter ÷ 2=270);
Sheet number: 9 (computational methods: internal diameter 60 × circumference ratio 3.14=centre bore girth 188.4 mm.
The thick 0.35 ≈ total tablet number 538 of centre bore girth 188.4 ÷ silicon steel blade.
Total tablet number 538 × lamination coefficient 0.97 ≈ actual needs total tablet number 521.
Actual needs total tablet number 521 ÷ unit number 60=each unit sheet number 8.7 ≈ 9.
Illustrate: because each unit sheet counts existing decimal, therefore, each unit will have more 0.3,60 unit will have more 18 silicon steel sheets altogether, and during actual fabrication, visual feelings select 18 unit to place 9 silicon steel sheets, and all the other are 8.
By above-mentioned thinking, calculate secondary sheet to two 17 grades of sheets (the most arrow gauge c namely shown in Fig. 1) successively, and process accordingly.
(2) secondary sheet: width 260mm, sheet number 3.……
(27) two ten seven grades: width 10mm, sheet number 3.
3, lamination according to the order of sequence: the silicon steel sheet of 60 unit is divided into two parts, fold respectively two framed in.By level, silicon steel sheet is put into semicircle die cavity by unit, and is alignd with mould end plate in the side of silicon steel sheet.
4, compressing tablet location: after semicircle die cavity lamination completes, with compressing tablet 3 positioning compression.
5, matched moulds Cheng Yuan: use loop wheel machine framedly to unite two into one two.
6, contracting circle is shaping: prick circle tighten in sheet stock circle periphery with pre-, make sheet stock round shaping.
7, prick without latitude band: shed forming die, wrapped up without latitude band in shaping sheet stock circle periphery around machine by vertical.
8, fat solidification is soaked: leaching fat has solidified an iron core column and made.
Claims (6)
1. a transformer radial pattern iron core column shaped device, is characterized in that: comprise a mould bases, and the polylith mold cavity plate (2), the two pieces of mould end plates (4,8) that are arranged on described mould bases and overlap wafer assembly more; Described mould bases two of being flexibly connected by symmetrical, axial one end are framed to be formed; Along these two framed length directions, compartment, vertically to being fixedly installed described polylith mold cavity plate (2) and two pieces of mould end plates (4,8) respectively; The middle part of these mold cavity plate (2) all has a semicircular recess, and all these semicircular recess form the semicircle die cavity receiving silicon steel sheet sheet stock; Described two pieces of mould end plates (4,8) split on the end face of described two framed links, form the baffle plate of described semicircle die cavity; The top of every block mold cavity plate (2) both sides arranges a set of wafer assembly respectively.
2. shaped device as claimed in claim 1, is characterized in that: described two are framedly made up of two channel-section steels (1) and some adjusting screw(rod)s (6) respectively, and these adjusting screw(rod)s (6) are arranged on two channel-section steels (1) through fastener separation formula, parallel shape.
3. shaped device as claimed in claim 1 or 2, is characterized in that: described two to be framedly flexibly connected by two cover hinge assemblies, often to overlap hinge assembly and be made up of two panels leaf of hinge (7,71) and a hinge axis (72); The side of described two panels leaf of hinge (7,71) is separately fixed on described two pieces of mould end plates (4,8), and opposite side is hinged by described hinge axis (72).
4. shaped device as claimed in claim 2, is characterized in that: be respectively equipped with suspension ring (11) at the free-end of described two channel-section steels (1).
5. shaped device as claimed in claim 3, it is characterized in that: the both sides of described mold cavity plate (2) and mould end plate (4,8) are connected into entirety by a core pipe (51) respectively, and, between described mold cavity plate (2), and the shaft of this core pipe (51) between mold cavity plate (2) and mould end plate (4,8) overlaps there is a tubular distance piece (5).
6. shaped device as claimed in claim 1, it is characterized in that: described wafer assembly is made up of compressing tablet (3), compressing tablet rotating shaft (31) and compressing tablet seat (32), compressing tablet seat (32) is fixedly installed in mold cavity plate (2); Compressing tablet (3) and compressing tablet rotating shaft (31) are single piece, and compressing tablet rotating shaft (31) is vertically in the screw being located on compressing tablet seat (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265346.XA CN103337358B (en) | 2013-06-28 | 2013-06-28 | Transformer radial pattern iron core column shaped device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265346.XA CN103337358B (en) | 2013-06-28 | 2013-06-28 | Transformer radial pattern iron core column shaped device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103337358A CN103337358A (en) | 2013-10-02 |
| CN103337358B true CN103337358B (en) | 2015-09-02 |
Family
ID=49245497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310265346.XA Active CN103337358B (en) | 2013-06-28 | 2013-06-28 | Transformer radial pattern iron core column shaped device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103337358B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201549367U (en) * | 2009-11-09 | 2010-08-11 | 常山科升电力设备有限公司 | Forming machine of iron core cake of reactor |
| CN102157260A (en) * | 2010-12-09 | 2011-08-17 | 常山科升电力设备有限公司 | Method for integrally, nakedly and radially casting disk type radiation type magnetic conduction iron core |
| CN203366991U (en) * | 2013-06-28 | 2013-12-25 | 浙江科升电力设备有限公司 | Radiation pattern transformer core limb forming device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943512A (en) * | 1982-09-06 | 1984-03-10 | Toshiba Corp | Production of radial iron core |
-
2013
- 2013-06-28 CN CN201310265346.XA patent/CN103337358B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201549367U (en) * | 2009-11-09 | 2010-08-11 | 常山科升电力设备有限公司 | Forming machine of iron core cake of reactor |
| CN102157260A (en) * | 2010-12-09 | 2011-08-17 | 常山科升电力设备有限公司 | Method for integrally, nakedly and radially casting disk type radiation type magnetic conduction iron core |
| CN203366991U (en) * | 2013-06-28 | 2013-12-25 | 浙江科升电力设备有限公司 | Radiation pattern transformer core limb forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103337358A (en) | 2013-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107045929B (en) | The production method and casting mold of open-close type zero sequence transformer | |
| CN202591585U (en) | Hub demolding structure | |
| CN207156066U (en) | One kind pours superimposed sheet double stack mold | |
| CN105312380A (en) | Device and method for forming flange holes in large storage box | |
| CN104815965A (en) | Core-bar bridge type connection anti-deformation method and structure of annule sand core | |
| CN203746661U (en) | Winding mold for transformer pie-type coils | |
| CN104252964A (en) | Manufacturing method for radiating type core cylinder of transformer | |
| CN203366991U (en) | Radiation pattern transformer core limb forming device | |
| CN103337358B (en) | Transformer radial pattern iron core column shaped device | |
| CN202013807U (en) | Novel coiling mold for pancake-type coil of transformer | |
| CN202003834U (en) | Sleeving mould of iron core coil | |
| CN103337360A (en) | Novel non-cast dry type transformer high-low voltage coil winding die | |
| CN204700244U (en) | A kind of endless belt sand core rod bridge-type connects anti-deforming structure | |
| CN202076124U (en) | Push-draw type winding mold for long-circular coil | |
| CN206432140U (en) | Large-scale dry-type transformer winding technique casting mold | |
| CN202332576U (en) | Flameproof dry-type transformer coil winding mold for mine | |
| CN206544139U (en) | The removal tool special of Horizontal diaphragm compresser cylinder | |
| CN206578246U (en) | A kind of special-shaped forging mold | |
| CN203787278U (en) | Inner-diameter adjustable wire wrapping die | |
| CN205464189U (en) | Modular flange casting grinding apparatus | |
| CN203600409U (en) | Novel mandrel pipe manufacturing device | |
| CN203752320U (en) | Square pile centrifugal molding mould | |
| CN203142429U (en) | Capacitive groove forming mold for capacitive sleepers and puller tool | |
| CN211278953U (en) | Splitting tensile method test concrete interlayer mechanical property's layering pouring mould | |
| CN202347337U (en) | Column sleeve pressing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |