CN1229828C - Method and device for producing core material of iron core - Google Patents
Method and device for producing core material of iron core Download PDFInfo
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- CN1229828C CN1229828C CN 02118559 CN02118559A CN1229828C CN 1229828 C CN1229828 C CN 1229828C CN 02118559 CN02118559 CN 02118559 CN 02118559 A CN02118559 A CN 02118559A CN 1229828 C CN1229828 C CN 1229828C
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- core
- stamping
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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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- Manufacturing Cores, Coils, And Magnets (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
This invention provides manufacturing method is employed for manufacturing the core material that is used for manufacturing the mall-sized iron core by laminating and joining a kind or a plurality of kinds of core materials that are formed by punching steel plates. A process where the core materials are punched out of a steel plate by using a punching means having a die plate and punches is provided. In the process, a punched out portion of the steel plate is supported from the reverse-to-punch side of the plate by a supporting means so as to obtain, in a high productivity, core material having low no-loaded exciting current I0.
Description
Technical field
The present invention relates to a kind ofly obtain EI iron core etc. by the stamping-out electromagnetic steel plate and dock, form manufacture method and the manufacturing installation of the iron core of closed magnetic circuit with heartwood with stacked.
Background technology
Iron core especially as small core, for example, can use the power transformer used at electronic equipment or power supply noise to eliminate the choke etc. of usefulness.The small core of using with regard to these electronic equipments becomes suitable shape to the electromagnetic steel plate stamping-out and the core that obtains carries out stacked joint (dock mutually the plate side) and forms unshakable in one's determination.Among the small core, representational is that the iron core of the core (I iron core) of the core (E iron core) of stacked joint E type and I type is constructed, and also is called the EI iron core.Stacked joint method as relevant EI core unshakable in one's determination, two kinds of methods of general employing, E iron core and I interaction cascading unshakable in one's determination are engaged the stacked joint method that calls eclipsed form, after making it integration with and I iron core unshakable in one's determination, with welding or both duplexers of adhesive bond are called the stacked joint method of dock stacked E respectively.
Small core for this electronic equipment is used in recent years along with electronics miniaturization and high performance, improves performance demands and gets up more strongly.Particularly, strong hope reduces non-loaded exciting current I
0For example, in stereo set,, follow I in order to reduce owing to miniaturization makes transformer and magnetic head quite approaching
0Increase and become the magnetic noise that increases the leakage field reason, also wish minimizing I
0Here, so-called " non-loaded exciting current I
0" just be meant under the state that discharges primary side the effective value of required electric current when the flux density of regulation is carried out AC excitation to iron core.
As everyone knows, core portion is to the I of iron core
0Contribution, magnetic susceptibility, the stamping-out that depends on used steel plate add and have or not distortion man-hour, have or not the annealing conditions of distortion stress relief annealing, distortion stress relief annealing etc.
Fig. 6 represents, generally is used for the example of existing manufacturing installation (metal pattern) of core (the unshakable in one's determination and I iron core of the E) manufacturing of EI iron core.(a) being top view, (b) is sectional side view.In addition, in (a), only show belt steel material 12 and guide post 21.
In the existing manufacturing installation 10, during beginning, from the mounting to the template, be called the banded electromagnetic steel plate of belt steel material 12 on 22,, be sent to the nib 25 of I iron core usefulness with I drift 16 stamping-outs 2 I iron cores 14 parallel with rolling direction.After, belt steel material 12 is delivered to the place ahead (among the figure from left to right), at belt steel material 12 Widths, generate the central authorities in hole and the central authorities between the front and rear gaps by the stamping-out of I iron core 14 with E drift 18 stamping-outs.Therefore, the one-off hole-piercing with E drift 18 just obtains 2 E iron cores 20.Here, in order to improve the dimensional accuracy of E iron core, insert aspect the guide finger that is called guide post 21 positions with forward direction I stamping-out unshakable in one's determination hole, adopt conventional stamping-out E iron core method in the position that reaches E drift 18.
Below, in order to illustrate, among 2 E iron cores 20 that in the manufacturing installation of Fig. 6 etc., obtain, the E iron core of the place ahead of belt steel material 12 moving directions (among Fig. 6, the right side) is called A 20a unshakable in one's determination, the E iron core of rear (among Fig. 6, the left side) is called B 20b unshakable in one's determination.
Summary of the invention
So, the core behind the stamping-out relates to the restriction of steel plate key element, and expectation has substantially I uniformly
0Yet, according to the inventor's investigation, in fact it seems quite discretely, become the I that obtains requiring in recent years
0Obstacle.
On the other hand, in the manufacturing of core, people wish to boost productivity by improving stamping-out speed strongly, but existing core manufacture method and manufacturing installation are difficult to leap and boost productivity.
Be among Fig. 6, behind the stamping-out, B 20b unshakable in one's determination is because deadweight, unshakable in one's determination from the E that template 22 is provided with nib 24 belows, be multiplied by one that carries road (scheming not shown), employing A 20a unshakable in one's determination makes foot (represent) landing downwards among Fig. 1 as 30 and is multiplied by the way on carrying road (scheming not shown), and A iron core 20a and B 20b unshakable in one's determination are carried out sorting.In order to carry out at a high speed stamping-out unshakable in one's determination, a series of actions that need successfully carry out the sorting of said stamping-out, A iron core and B iron core, take out of from manufacturing installation.
Yet in the stamping-out operation of existing manufacturing installation 10, with the increase of stamping-out speed, A 20a unshakable in one's determination is not multiplied by the carrying road carefully, or flyer easily, or is detained on the carrying road, has reduced productivity ratio.And, since just after the stamping-out A 20a unshakable in one's determination disperse, shape defect also takes place in strong collision sometimes on carrying road etc.That is, these all become the factor that fabrication yield reduces that takes place.
Because the EI iron core especially usage frequency and output maximum be small core, so strong request reduces above-mentioned I
0, and then boost productivity.
The object of the present invention is to provide a kind of non-loaded exciting current I
0The low small core manufacture method and the manufacturing installation of core.And the present invention is a kind of non-loaded exciting current I
0Low small core is to provide manufacture method and the manufacturing installation of the high small core of productivity ratio with core with the manufacture method and the manufacturing installation of core, its purpose.
Inventor's probe the non-loaded exciting current I of existing operation
0Discrete reason knows that B 20b unshakable in one's determination goes up the non-loaded exciting current I of generation
0Increase result from the shear plane shape.And, the manufacture method of the shear surface shape of improving B 20b unshakable in one's determination is carried out deep investigation, and finished the present invention.
Promptly, the small core provided by the invention manufacture method of core, be to utilize one or more ways unshakable in one's determination of stacked joint, be used for the manufacturing of small core, it is characterized in that, possess with blanking apparatus with template and drift, operation from the steelplate punching core, in this operation, to the opposition side of steel plate, by means of the stamping-out part of supportive device supporting plate from drift.
And, the invention provides the manufacturing installation of small core with core, by one or more iron cores of stacked joint, be used in the manufacturing of small core, it is characterized in that possessing with lower device:
Be used for the template that nib is arranged of mounting steel plate when possessing stamping-out and be used for position at nib to template on the steel plate of mounting carry out stamping-out, form the blanking apparatus of the drift of core;
During stamping-out, be used for the position beyond steelplate punching part, steel plate is pressed on compacting device on the template;
And during stamping-out, to the opposition side of steel plate, at the supportive device of the position of nib supporting plate stamping-out part from drift.
And then the inventor is devoted to the problem of productivity ratio, and to making the conveyance working-procedure problem that productivity ratio reduces and investigating.
Its result can expect and about while of stamping-out of B 20b unshakable in one's determination that A 20a unshakable in one's determination is multiplied by the shortcoming of the existing method on carrying road, at manufacture method and the manufacturing installation of small core of the present invention with core, then realizes the state that productivity ratio is high.
The small core of one of best embodiment of the present invention core manufacture method by one or more methods unshakable in one's determination of stacked joint, is used for the small core manufacturing,
It is characterized in that possessing following operation: utilize the blanking apparatus that template and drift are arranged, from the operation of steelplate punching core, in this operation, to the opposition side of steel plate, with the stamping-out part of supportive device supporting plate from drift; After this operation, back into the operation of same position before the stamping-out with the core of supportive device after to stamping-out;
Then, mobile core arrives the operation of dividing favored area;
At last, carry out the operation of core sorting in minute favored area.
The small core of one of best fact Example of the present invention by one or more methods unshakable in one's determination of stacked joint, is used for the small core manufacturing with the manufacturing installation of core, it is characterized in that possessing:
Be used for the mounting steel plate when having stamping-out and have nib template and the position of nib to template on mounting steelplate punching, make the blanking apparatus of the drift that core uses;
During stamping-out, the position beyond steelplate punching part is used for steel plate is pressed on compacting device on the template;
During stamping-out,, be used for supporting plate stamping-out part in the position of nib to the opposition side of steel plate from drift, and, behind stamping-out, be used for the core behind the stamping-out back into stamping-out before the supportive device of same position;
And push back core, and then after the mobile core, in order to carry out the sorting of core, only the core that is provided with in the place ahead of moving direction from the stamping-out position divides favored area.
Description of drawings
Fig. 1 is the stereogram of the typicalness of E iron core (the unshakable in one's determination and B iron core of A) and I iron core.
Fig. 2 represents and the section typical figure that has E foot unshakable in one's determination and I bonding part unshakable in one's determination now.(a) being the section typical figure of A iron core, (b) is the section typical figure of B iron core.
The section typical figure of state when Fig. 3 is expression stamping-out A iron core and B iron core.(a) expression stamping-out state midway, (b) soon state after the expression stamping-out.
Fig. 4 is a routine typical figure of manufacturing installation of the present invention.(a) being top view, (b) is sectional side view.
Fig. 5 is another routine typical figure of manufacturing installation of the present invention.(a) being top view, (b) is sectional side view.
Fig. 6 is an example that generally is used for the existing manufacturing installation typical figure that the core of EI iron core makes.(a) being top view, (b) is sectional side view.
Embodiment
The inventor painstakingly studies, and reduces the I of small core with core
0, and then, should boost productivity.Below, as the concrete example of small core, describe with the EI iron core.
A 20a unshakable in one's determination and B 20b unshakable in one's determination, it is desirable having same character as above-mentioned, however the inventor investigates the I of stacked respectively acquisition EI iron core
0Situation, can know the I with only with A 20a unshakable in one's determination the time
0I during relatively, only with B iron core 20b
0The aspect is high by 5～40%.But the inventor also knows such I by research
0The difference, though behind the stamping-out through stress relief annealing, also can not eliminate.Therefore, the approximately half unshakable in one's determination of the E behind the stamping-out becomes the bad product of magnetic characteristic as you know, has become to reduce greatly the major reason of one-level rate of finished products.
And the inventor will determine EI non-loaded exciting current I unshakable in one's determination
0The reduction method, to the I of B 20b unshakable in one's determination
0Increasing reason studies.
The inventor focuses on the section shape of A 20a unshakable in one's determination and B 20b unshakable in one's determination.Among Fig. 1, expression is pressed the EI-48 size by means of the standard manufacture device that uses now, the typicalness stereogram of E iron core 20 that stamping-out electromagnetic steel plate 35G155 obtains (A 20a unshakable in one's determination and B 20b unshakable in one's determination) and I iron core 14.
Among Fig. 2, the foot 30 of the existing E iron core 20 of expression and the section typical figure of I 14 engaging portion unshakable in one's determination.(a) be the section typical figure of A 20a unshakable in one's determination, (b) be the section typical figure of B iron core.In addition, these all are the sections of representing with the site part in the presentation graphs 1 in more detail.
In addition, 35G155 is a kind of grain-oriented magnetic steel sheet specification of regulation among the JISC 2553 (version in 2000), and nominal thickness is 0.35mm, iron loss (W
17/50: frequency 50Hz, the value of peakflux density 1.7T) be that 1.55W/kg is following, magnetic flux density (B
8: be more than the 1.78T value of magnetic field intensity 800A/m).And, EI-48 is the EI plywood size unshakable in one's determination of regulation among the NEC industry meeting specification EIAJRC-2724 (formulating in 1994), overall dimension is that minor face is that 40.0mm, long limit (length that is equivalent to I iron core 14) are 48.0mm, and the length of the size of the foot 30 of E iron core 20 is that 24.0mm, width are 16.0mm in central foot, the foot at two ends respectively is 8.0mm.In addition, the width of I iron core 14 is 8.0mm.
Result after inventor's research, as shown in Figure 2, the shape of B 20b section unshakable in one's determination and A 20a unshakable in one's determination compares, and the limit portion 34 of collapsing is not obvious with the difference of shear plane 36, the relative steel plate face tilt in composition surface.Thus, can know, when B 20b unshakable in one's determination is docked the formation magnetic loop with I unshakable in one's determination 14, produce the space between B 20b unshakable in one's determination and the I iron core 14 and make magnetic resistance increase I
0Increase.
And then the inventor has investigated the reason that section configuration that B 20b unshakable in one's determination goes up the junction surface becomes above-mentioned appearance.Fig. 3 is the state section typical figure of expression stamping-out will become the belt steel material top ends 12a of A 20a unshakable in one's determination and B 20b unshakable in one's determination the time.(a) expression stamping-out state midway (b) is represented stamping-out state afterwards just.Its result as shown in Figure 3, as you know in the process of stamping-out, descends with E drift 18, space 38 takes place between will becoming below the part of B 20b unshakable in one's determination and the E drift 18, and the part limit curved edges that will become B 20b unshakable in one's determination is punched, thereby the shear plane run-off the straight.And the 20b bending unshakable in one's determination of the B in the stamping-out like this can think that reason is that foot 30 is elongated, and intensity is low.
On the other hand, in stamping-out next time, leave and become on the top ends 12a of belt steel material of A foot unshakable in one's determination shear plane does not take place from belt steel material.
As everyone knows, I
0Also great changes have taken place with the shape of core interface for self, and for example, the spy opens in the flat 1-272102 communique and puts down in writing, as generally to reducing the bad I that causes of interface
0The solution countermeasure, by with containing the adhesive of magnetic particle, the composition surface of knitting layer laminated core is filled in the method in the space that the place, composition surface produces, the record aim is to improve magnetic characteristic.
Yet, in this method, exist manufacturing cost unshakable in one's determination to increase or the complicated such problem of manufacturing process, also bring difficulty in the practicality.
So by improving blank operation, the shear plane itself that improves B 20b unshakable in one's determination is desirable.
Below, describe relevant most preferred embodiment of the present invention in detail with figure, but the present invention is not limited to this.
Fig. 4 is non-loaded exciting current I
0Low, and, can high speed blanking, the productivity ratio height can be realized of the present invention manufacturing installation one routine typical figure of small core of the present invention with the manufacture method of core.(a) being top view, (b) is sectional side view.(a) in, belt steel material 12 and guide post 21 only are shown.And in the following description, for convenience, according to the above-below direction of making decision on the accompanying drawing, yet this is not the direction that is provided with that limits manufacturing installation of the present invention.
The manufacturing installation 50 of core of small core of the present invention shown in Fig. 4, it is a kind of way that adopts stacked one or more cores of joint, be used to make the manufacturing installation of the small core of small core with core, when this manufacturing installation possesses stamping-out, have and be used for the mounting steel plate, have the template of nib and on the position of nib is used for template the steel plate of mounting carry out stamping-out, and form the blanking apparatus of the drift of core; During stamping-out, the position beyond steelplate punching part is used for steel plate is pressed on compacting device on the template; During stamping-out,, be used for supporting plate stamping-out part in the position of nib to the opposition side of steel plate from drift, and, behind stamping-out, be used for the core behind the stamping-out back into stamping-out before the supportive device of same position; And push back core, and then after the mobile core, in order to carry out the sorting of core, the core that is provided with in the place ahead from stamping-out position moving direction divides favored area.
Among Fig. 4, about above-mentioned manufacturing installation 50, express belt steel material 12 respectively, have the template 22 of the nib 24 of the nib 25 of I usefulness unshakable in one's determination and E iron core (B iron core) usefulness, as the E drift 18 of drift, as the stripper plate 26 of compacting device, as the support plate 52 of supportive device as steel plate.And, as the core after in the stamping-out or the just stamping-out, represent B 20b, A unshakable in one's determination 20a unshakable in one's determination respectively, behind the stamping-out as the core that moves in minute favored area, expression A 20a ' unshakable in one's determination and B 20b ' unshakable in one's determination.In addition, these are example, also can adopt other formation.
Small core of the present invention is with the blanking apparatus with template and drift, from the operation of steelplate punching core with first operation of the manufacture method of core.In this operation, to the opposition side of steel plate, with the stamping-out part of supportive device supporting plate from drift.
Among Fig. 4, belt steel material 12 is with (the I iron core behind the stamping-out from nib 25 conveyances to following) after I drift 16 stamping-outs 2 I iron cores 14, for fixed-site belt steel material at guide post 21, insert guide post after, the position of E 20 conveyances unshakable in one's determination to stamping-out, and mounting is on template 22.With E drift 18, go out 2 E iron cores 20 of A 20a unshakable in one's determination and B 20b unshakable in one's determination from belt steel material 12 stamping-outs of this mounting.Among the present invention, it is characterized in that, when this stamping-out, to the opposition side of belt steel material 12, by means of the stamping-out part of support plate 52 support strip materials 12 from E drift 18.
As described above, in existing method, produce space 38 between as shown in Figure 3 will be below part that becomes B 20b unshakable in one's determination and E drift 18, because become the part limit curved edges stamping-out of B 20b unshakable in one's determination, so shear plane run-off the straight, yet for the present invention, support B 20b unshakable in one's determination by means of support plate 52, the one direction pushing one side that faces up is carried out stamping-out, thereby do not produce such space, the section configuration that just can prevent B 20b unshakable in one's determination degenerates (shear plane inclination) specifically, A 20a unshakable in one's determination, B 20b unshakable in one's determination forms the good section configuration shown in Fig. 2 (a).Its result can realize reducing the I of B 20b unshakable in one's determination
0
Be described more specifically.
The trailing edge of support plate 52 cooperation E drifts 18 moves the limit part that will become B 20b unshakable in one's determination in the stamping-out is applied power upwards.That is, support plate 52 usefulness are than the little pressure of E drift 18 pressure, the stamping-out part of support strip material 12.
Here, 20b unshakable in one's determination breaks away from the moment of the top ends 12a and the A 20a unshakable in one's determination of belt steel material from moment that E drift 18 contacts with belt steel material 12 to the B that is punched, and the stamping-out part supports it is desirable by the below.At this moment, because support plate 52 and E drift 18 are clamped belt steel material 12 fully, thereby can prevent B 20b unshakable in one's determination bending partly fully.
Particularly, upward pressure as support plate 52 and to adjust, seize the stamping-out part on both sides by the arms, just can extremely fully prevent the bending of this part, thereby be desirable with suitable pressure according to the pressure size of E drift 18.And, with in the manufacture method of core, control the stamping-out part of using the supportive device supporting plate at small core of the present invention according to the pressure of drift, the method for seizing the stamping-out part with suitable pressure on both sides by the arms is a desirable mode.
But, even support plate 52 and belt steel material 12 are not this situations that usually is close to, if prevent bending to a certain degree, just can reach the effect of improving B 20b shape unshakable in one's determination, thereby among the present invention, from the moment that E drift 18 contacts with belt steel material 12, break away from the top ends 12a of belt steel material and any moment of A 20a unshakable in one's determination moment to the B that is punched 20b unshakable in one's determination, as long as support plate 52 supports the stamping-outs part just can.
Be not particularly limited the method for support, can enumerate, for example, utilize the sort of mechanical spring 54 as shown in Figure 4 method, take to utilize the method, the method that mechanically support plate 52 is moved with the action interlock of E drift 18 of use elastomeric material (elastic device) of the method etc. of atmosphere spring.
Among these methods, the method for mechanical spring is easy and the most effective method, by suitable control holding power (the last thrust that is produced by spring at this moment), can obtain the good section configuration of said effect.For this reason, can the every compression of setting spring 1mm, the last thrust of support plate is 100～1000N.That is, when adopting n spring that elastic constant equates, the elastic constant that can set this spring is the scope of 100/n～1000/n (N/mm).
If this power is lower than 100N, the last thrust deficiency of support plate just can not fully prevent the core bending in the stamping-out action, and exciting curent reduction effect diminishes sometimes.On the other hand,, then cause near the excessive distortion core end, magnetic characteristic is worsened if surpass 1000N.
And, during stamping-out, it is desirable to make support plate 52 in nib 24, can smooth and easyly up and down to move.And, as long as having, the size of support plate 52 and shape prevent to become in the stamping-out the crooked function of B 20b part unshakable in one's determination, just do not need special qualification.
And, during stamping-out, also can belt steel material 12 be pressed on the template 22 in the position beyond the stamping-out part of belt steel material 12.Therefore, can improve the B that is obtained 20b unshakable in one's determination and A 20a shape unshakable in one's determination more, and, A described later 20a unshakable in one's determination and B 20b unshakable in one's determination can successfully be moved.
Be not particularly limited the position of pushing, however before stamping-out part and a side afterwards or both to be urged be desirable.Also be not particularly limited the method for pushing, can enumerate, for example adopt the method that resembles stripper plate 26 as shown in Figure 4.
Among Fig. 4, expression is about making the method for a pair of A 20a unshakable in one's determination and B 20b unshakable in one's determination with a stroke of E drift 18, yet except that this method, occasion with the E iron core of the each stamping-out of a stroke of E drift, or, also can use manufacture method and the manufacturing installation of small core with core with many E drifts occasion of a plurality of E iron cores of stamping-out simultaneously.And,,, also can improve section configuration by using the present invention even to the I iron core.
Like this, by means of blanking apparatus with template and drift, make one or more small cores with under the situation of core from the steelplate punching core, during stamping-out its all or part of, by using supportive device, to the stamping-out part of steel plate, can improve the shape of section, and improve the I of gained core from the opposition side supporting plate of drift
0
Small core of the present invention, as long as possess above-mentioned the 1st operation and is not particularly limited in this with the manufacture method of core, and in order to solve following problem, it is better to possess operation described later.
That is, in existing method, behind the stamping-out, for the carrying road is slided and be multiplied by in the foot's (representing with 30 among Fig. 1) that makes A 20a unshakable in one's determination downwards, as shown in Figure 6, by means of sheet spring or air pressure 28, the general method that downward masterpiece is used for foot's 30 parts of A 20a unshakable in one's determination that adopts.
, when E drift 18 descends, apply downward power for the part (with the part of B 20b cut-out unshakable in one's determination) at A 20a back unshakable in one's determination (representing with 32 among Fig. 1) here, E drift 18 need apply power upwards when rising.So, just overcome the power of the power that acts on this A 20a rear part unshakable in one's determination (back 32), masterpiece need be used for the place ahead part (foot 30) of A iron core.On the other hand, if it is strong excessively to act on the power of A the place ahead unshakable in one's determination part, A 20a unshakable in one's determination clearly can take place, and the road is escaped or the result of shape defect from carrying.
And, in general, act on A 20a unshakable in one's determination the place ahead part downward force or with the effect linkedly that moves up and down of E drift 18, or certain air pressure 28 is worked, therefore be difficult to the timing of control action.
In order to address the above problem, and then, among the present invention, it is desirable to possess following second, third and the 4th operation.
Small core of the present invention is after first operation with second operation of the manufacture method of core, with supportive device core back into stamping-out before the operation of same position.
Among Fig. 4, support plate 52 has the elastic strength of the appropriateness set and by there being support plate block 53, and with B 20b unshakable in one's determination back into stamping-out before the structure (position of same position before 20b unshakable in one's determination back into stamping-out with B, block 53 is near the bottom of templates 22) of same position.Thereby, do not take out B 20b unshakable in one's determination and also can not solve from nib 24, even support plate 52 is set, take out the B 20b unshakable in one's determination difficulty that also can not become.
In addition, the positional precision when making B 20b unshakable in one's determination return same position is not as long as hinder moving in the 3rd operation described later.And, as for make B 20b unshakable in one's determination turn back to stamping-out before the structure of same position, generally be, on supportive device, add the function that pushes back the B iron core, or setting pushes back other device of usefulness, in any case, when the B iron core is back into the origin-location, also the device that stops to push back to be arranged, yet be not to be limited to this.And, certainly also be not limited to the content of accompanying drawing, for example the position of block 53 is arbitrarily, as the ledge that makes the block action, also can projection etc. be set Anywhere at nib 24 inwalls etc.And when for example being power, by with sensor and control the B iron core or the position of support plate 52 also can be realized with the air.
In addition, when not carrying out this operation, utilize method, also can take out at the mobile B of the Width (direction identical) of manufacturing installation 50 20b unshakable in one's determination etc. with the Width of belt steel material.
Small core of the present invention is after second operation with the 3rd operation of the manufacture method of core, core is moved to the operation of branch favored area.
Among Fig. 4, respectively A 20a unshakable in one's determination and B 20b unshakable in one's determination are moved to A the branchs constituency 56a unshakable in one's determination and the B iron core branch constituency 56b in the place ahead.The method of mobile A 20a unshakable in one's determination and B 20b unshakable in one's determination is not particularly limited, and can enumerate, and for example by means of the conveying capacity of belt steel material 12, releases B 20b unshakable in one's determination with the top ends of belt steel material 12, releases the method for A 20a unshakable in one's determination simultaneously with the back of B 20b unshakable in one's determination; Mechanically keep and the method for mobile A 20a unshakable in one's determination and B 20b unshakable in one's determination; Make module 22 self become conveying type, make method that A 20a unshakable in one's determination and B 20b gang mould unshakable in one's determination plate 22 move together etc.Wherein, the method for releasing with the conveying capacity that utilizes belt steel material 12 is easy, so be desirable.
Small core of the present invention is after the 3rd operation with the 4th operation of the manufacture method of core, carries out the sorting operation of core in minute favored area.In addition, among the present invention, so-called " sorting " meaning is the steel of distinguishing behind core and the stamping-out, and stamping-out core the time, also comprises mutual differentiation core more than 2 kinds.
Method in that minute favored area is carried out the core sorting is not limited especially.For example, as shown in Figure 4, on the platform 58a and 58b of the A that on a little is lower than template 22, is provided with branch constituency 56a unshakable in one's determination and B branch constituency 56b unshakable in one's determination, make after A 20a ' unshakable in one's determination and mobile the falling of B 20b ' unshakable in one's determination, A 20a ' unshakable in one's determination and the B 20b ' importing unshakable in one's determination method of taking out of path (scheming not shown) separately.According to this method, can carry out sorting to core smoothly.
For the certain conveyance of core separately being arrived branch favored area separately, just separately when minute favored area 56a and 56b move A, B iron core, be provided with in 56a and 56b zone and prevent the plate that core falls, after adopting core to move to finish, open this plate, allow core fall into the below method also passable.
In addition, among Fig. 4, though A branch constituency 56a unshakable in one's determination is configured in the place ahead (right side among Fig. 4) near moving direction, B branch constituency 56b unshakable in one's determination is configured in the rear (left side among Fig. 4) near moving direction, yet is not particularly limited these configurations.Owing at A branchs constituency 56a unshakable in one's determination special bearing 60 aspect the taking-up of A iron core is set, can takes out the A iron core sleekly.In the conventional device (Fig. 6), after needing horizontal component, be provided for promoting the A inclined-plane that takes out unshakable in one's determination, thereby be difficult to slick and sly mobile core owing to stamping-out.And, because the block 62 of the core position before A branch constituency 56a unshakable in one's determination is provided for correct decision sorting soon can more successfully carry out each core and fall into the below.
In existing manufacture method, as shown in Figure 6, because stamping-out and A are unshakable in one's determination and the sorting of B iron core, on the position and the time on all extremely near or carry out continuously, when the stamping-out, need downward masterpiece to be used for the place ahead part (foot 30) of A iron core, be difficult to the size of this downward force and the timing of effect are carried out delicate control, A 20a unshakable in one's determination takes place often break away from transportation route or shape defect takes place.
Therefore, the present invention is except that above-mentioned first operation, possess under the situation of above-mentioned second, third and the 4th operation, independently use the sorting of E drift 18 stamping-out E 20a unshakable in one's determination and A 20a ' unshakable in one's determination and B iron core 20b ', even thereby downward forces such as air pressure 28 are not carried out that A 20a unshakable in one's determination can not take place yet in delicate adjustment habit is hit etc., with existing method relatively, can improve stamping-out speed by leaps and bounds and boost productivity.And, among the present invention, also give downward power such as A branch unshakable in one's determination favored area 56a effect air pressure as required, more favourable to the smooth sorting of core.In addition, among the present invention,, also the dimensional accuracy that improves core is played beneficial effect with the use that has same guide rod (guide finger) 21 now.
And the present invention possesses under the situation of above-mentioned second, third and the 4th operation except that above-mentioned first operation, not only realizes boosting productivity, and owing to use the supportive device of the stamping-out of supporting plate, has also solved the problem that core is difficult to take out.So, at this moment be a most preferred embodiment of the present invention.
In addition, support the blanking method of the steel plate blank be punched like this from the below, though also once be used for existing cut-out stamping-out technology, main purpose is to improve dimensional accuracy or prevent burr, for EI used core blanking method unshakable in one's determination, just there is not this necessity, therefore do not add discussion fully.
The present invention relates to the stamping-out of core, forming aspect the magnetic loop, pay attention to the section configuration of core, the shape of shear plane as you know, wherein the inclination of shear plane is easily to I
0Impact, according to this understanding, just when stamping-out, adopt the opposition side of steel plate from drift, the stamping-out way partly with the supportive device supporting plate realizes I
0Low core.So the present invention supports as feature during not only the stamping-out that shall not be applied to existing core blanking method, and different with prior art in purpose and technical thought.
For example, putting down in writing on the flat 11-342432 communique of Te Kaiping 4-197530 communique and Te Kai, in the time of with the core stamping-out,, the mechanism that supports the core behind the stamping-out from the below is set the core of the riveting technology of integration (so-called mould in riveted joint) simply.
But at this moment purpose is riveted joint and the stamping-out that carries out core simultaneously, thereby the composition surface section configuration that the core bending causes in the relevant stamping-out does not become problem.
So with the moment of these technology at the stamping-out core, that is, Fig. 3 (a) is not to support material unshakable in one's determination from the below under (b) such state, but cut off fully from raw steel core be subjected to later on from below the effect of template, these are different fully with the present invention.
And the spy opens clear 63-237405 communique or the special technology of putting down in writing on the clear 63-244834 communique of opening also relates to the relevant same technology unshakable in one's determination with EI, and is also different fully with the present invention.
Small core of the present invention also can carry out stress relief annealing with in the manufacture method and manufacturing installation of core to the core that is obtained.Stress relief annealing is not limited especially, can adopt existing known method yet.
The small core manufacture method of core and the core of manufacturing installation about the invention described above, need only the manufacturing of adopting one or more cores of stacked joint and being used for small core, be not particularly limited, but comprise part weak strength with the E of EI iron core the other side's side unshakable in one's determination core docking section, if use the core that characteristic degradation takes place to be caused by bending easily when stamping-out, improve I
0Effect just high.
So, when small core is the EI iron core, particularly suitable.As the EI iron core, also can be applied to eclipsed form and the stacked joint method that flushes one of formula.
And the occasion of small core except that the EI iron core also is suitable for.For example, as the mode of stacked a kind of core, can enumerate the core combination of E type and E type (so-called E-E iron core), L type and L type, U type (C type) and U type different shapes such as (C types).And,, except that above-mentioned EI iron core, can also enumerate the core combination of U type (C type) and different shapes such as I type, L type and T type as the mode of stacked multiple (2 kinds) core.
And,, be not provided with qualification as for the stamping-out electromagnetic steel plate yet.And grain-oriented magnetic steel sheet, non-oriented electromagnetic steel sheet having also can suitablely utilize.In addition, though among the above-mentioned JIS C 2553 of grain-oriented magnetic steel sheet, and non-oriented electromagnetic steel sheet having existing various regulations in JIS C 2552 (version in 2000), even if use the outer steel plate of these product specifications also no problem.For example be exactly general cold-rolled steel sheet, also have enough electromagnetic propertys according to application target, be used for core sometimes, this occasion also can extensive use.
[embodiment]
Below, embodiment is shown, specifically describe the present invention, the present invention is not limited to this.
(embodiment 1)
The small core of the present invention of constructing shown in Fig. 5 possesses with the manufacturing installation of core: have the template with nib that is used for the mounting steel plate when stamping-out, with the position that is used at nib, the steel plate of stamping-out mounting on template, the blanking apparatus of the drift of formation core; When stamping-out, be used for external position steel plate being pressed onto the compacting device of template in the stamping-out part of steel plate; And during stamping-out, be used for steel plate from the opposition side of drift supportive device in the position of nib supporting plate stamping-out part.Among Fig. 5, (a) being top view, (b) is sectional side view.In addition, (a) in, only express belt steel material 12 and guide post 21.
Make the belt steel material of wide 48mm by the grain-oriented magnetic steel sheet blank of 35G155 grade specification.Utilize manufacturing installation shown in Figure 5, by the iron core of this belt steel material punching out EI-48 size.Specifically, as shown in Figure 5, by the belt steel material 12 of mounting on the template 22, with E drift 18 punching out A 20a unshakable in one's determination and B 20b unshakable in one's determination, when the stamping-out, to the opposition side of belt steel material 12, with support plate 52 above thrust 500N/mm support stamping-out parts from E drift 18.Behind the stamping-out, take out the B iron core from the nib 24 that is located on the template 22, the A way that foot 30 is taken out in the landing mode downwards that adopts unshakable in one's determination is carried out sorting to A 20a unshakable in one's determination and B 20b unshakable in one's determination.
In addition, in this example, also have the function of stacked maintenance B unshakable in one's determination thereon as the support plate 52 of supportive device.Like this, though the B unshakable in one's determination of stacked maintenance punching out, when the present embodiment stamping-out, stamping-out portion from below make aspect the thrust, open disclosed technology such as flat 4-197530 with the spy different.
Respectively at 800 ℃, N
2In apply stress relief annealing in 2 hours after, A 20a unshakable in one's determination and B 20b unshakable in one's determination and I 14 combinations unshakable in one's determination and to carry out eclipsed form stacked, obtain the EI EI iron core unshakable in one's determination and unshakable in one's determination and that the I iron core constitutes that constitutes with the I iron core unshakable in one's determination by B by A.Here, stacked thickness metric is decided to be 35mm (with 100 of 0.35mm materials).To the EI iron core of gained, at excitation peakflux density (B
m): 1.3T, carry out magnetic-measurement under the condition of frequency: 50Hz.By measuring non-loaded exciting current I
0Way, carry out magnetic-measurement.
(comparative example 1)
Utilize manufacturing installation as shown in Figure 6, by the iron core of similarly to Example 1 belt steel material stamping-out EI-48 size.Specifically, as shown in Figure 6, with E drift 18 by mounting to 20a unshakable in one's determination of the belt steel material 12 stamping-out A on the template 22 and B 20b unshakable in one's determination.B 20b unshakable in one's determination is multiplied by the carrying road and takes out from nib 24 belows of being located at template 22, the A way that foot 30 is taken out in the landing mode downwards that adopts unshakable in one's determination is carried out sorting to A 20a unshakable in one's determination and B 20b unshakable in one's determination.
Then,, obtain the EI iron core, and carry out magnetic measurement according to method similarly to Example 1.
Expression is by the non-loaded exciting current I of embodiment 1 and comparative example 1 gained EI iron core in the 1st table
0And, I during use B iron core
0I during with use A iron core
0Difference I when using A unshakable in one's determination
0Value, as " deterioration rate of B iron core " be illustrated in the lump the 1st the table in.
Very clear from the 1st table, adopt the manufacturing installation of small core of the present invention with core, according to the core (embodiment 1) that small core of the present invention is made with the manufacture method of core, compare, as can be known B I unshakable in one's determination with existing situation (comparative example 1)
0Low, deterioration rate is little.
[table 1]
| Manufacturing installation | Kind unshakable in one's determination | Non-loaded exciting current I 0(mA) | The B rate (%) of feeling sick unshakable in one's determination | |
| Comparative example 1 | Fig. 6 | The A iron core | 162 | 38.9 |
| The B iron core | 225 | |||
| Embodiment 1 | Fig. 5 | The A iron core | 160 | 1.3 |
| The B iron core | 162 |
(embodiment 2)
Utilize manufacturing installation as shown in Figure 4, by the iron core of similarly to Example 1 belt steel material stamping-out EI-48 size.Specifically, as shown in Figure 4, with E drift 18 by mounting to 20a unshakable in one's determination of the belt steel material 12 stamping-out A on the template 22 and B 20b unshakable in one's determination, when the stamping-out, to the opposition side of belt steel material 12, support the stamping-out part with the last thrust of representing in the 2nd table with support plate 52 from E drift 18.After, by means of support plate 52 with B 20b unshakable in one's determination back into stamping-out before same position.After, A 20a unshakable in one's determination and B 20b unshakable in one's determination are moved to A the branchs constituency 56a unshakable in one's determination and the B iron core branch constituency 56b in the place ahead respectively.By conveying capacity with belt steel material 12, release B 20b unshakable in one's determination with the top ends of belt steel material 12, release the method for A 20a unshakable in one's determination simultaneously with the back of B 20b unshakable in one's determination, move.After, the A of lower settings constituency 56a of branch unshakable in one's determination and B iron core divide on the sorting table 58a and 58b of constituency 56b on than template 22, mobile A 20a ' unshakable in one's determination is with B 20b ' unshakable in one's determination and after falling, employing is carried out sorting with A 20a ' unshakable in one's determination and the B 20b ' importing unshakable in one's determination way of taking out of the path separately to A 20a unshakable in one's determination and B 20b unshakable in one's determination.
Above-mentioned operation is from 300SPM (stroke per minute: per minute punching number) change stamping-out speed to 900SPM, carry out under various stamping-out speed.
Then,, obtain the EI iron core, and carry out magnetic measurement according to method similarly to Example 1.
(comparative example 2)
Carry out the stamping-out speed except that from 300SPM to 900SPM, changing,, to obtain the EI iron core, and carry out magnetic measurement according to the same method of comparative example 1.
In the 2nd table, express non-loaded exciting current I by embodiment 2 and comparative example 2 gained EI iron cores
0" deterioration rate of B iron core ".And, in the 2nd table fabrication yield has been shown.
Very clear from the 2nd table, adopt the manufacturing installation of small core of the present invention with core, according to the core (embodiment 2) that small core of the present invention is made with the manufacture method of core, compare, as can be known B I unshakable in one's determination with existing occasion (comparative example 2)
0Low, deterioration rate is little.
And, can know, adopt the manufacturing installation of small core of the present invention with core, implement the occasion (embodiment 2) of small core of the present invention with the manufacture method of core, can carry out stamping-out at a high speed.For this, existing occasion (comparative example 2), above if stamping-out speed is 700SPM, the A iron core take out of the difficulty that just becomes, stamping-out can not be implemented.And stamping-out speed is in 500SPM, and the fabrication yield aspect is also inferior.
[table 2]
(embodiment 3 and comparative example 3)
The belt steel material of wide 93mm is made in employing by the non-oriented electromagnetic steel sheet having blank of 50A600 grade, the iron core of stamping-out EI-93 size, make stamping-out speed change to 700SPM from 200SPM, except thrust on embodiment 3 setting support plates is 500N/mm, and do not carry out beyond the stress relief annealing, according to the same method of embodiment 2 and comparative example 2.Obtain EI iron core (stacked thickness is 35mm) respectively, and carried out magnetic measurement.
Here, 50A600 is the specification of regulation among the JIS C 2552 (version in 2000), and nominal thickness is 0.50mm, iron loss (W
15/50: be that 6.00W/kg is following, magnetic flux density (B the value of frequency 50Hz, peakflux density 1.5T)
50: be more than the 1.63T value of magnetic field intensity 5000A/m).And EI-93 is by stipulating among the EIAJ RC-2724 that the minor face of outside dimension is that 81.5mm, long limit are 93.0mm, and the length of E foot size unshakable in one's determination is that 46.5mm, central foot width are that 29.0mm, two ends foot respectively are 14.5mm.In addition, the width of I iron core is 17.5mm.
In the 3rd table, express non-loaded exciting current I by embodiment 3 and comparative example 3 gained EI iron cores
0" deterioration rate of B iron core ".And, in the 3rd table fabrication yield has been shown.
Very clear from the 3rd table, adopt the manufacturing installation of small core of the present invention with core, according to the core (embodiment 3) that small core of the present invention is made with the manufacture method of core, compare, as can be known B I unshakable in one's determination with existing occasion (comparative example 3)
0Low, deterioration rate is little.
And, can know, adopt the manufacturing installation of small core of the present invention with core, implement the occasion (embodiment 3) of small core of the present invention with the manufacture method of core, can carry out stamping-out at a high speed.In contrast, existing occasion (comparative example 3), above if stamping-out speed is 800SPM, the A iron core take out of the difficulty that just becomes, can not implement stamping-out.And, stamping-out speed more than 400SPM in, the fabrication yield aspect is also inferior.
[table 3]
| Manufacturing installation | Stamping-out speed (SPM) | Kind unshakable in one's determination | Non-loaded exciting current I 0(mA) | B deterioration rate (%) unshakable in one's determination | Fabrication yield (%) | |
| Comparative example 3 | Fig. 6 | 200 | The A iron core | 521 | 14.4 | 100 |
| The B iron core | 596 | 100 | ||||
| 400 | The A iron core | 525 | 12.2 | 99.4 | ||
| The B iron core | 589 | 100 | ||||
| 600 | The A iron core | 518 | 11.2 | 89.3 | ||
| The B iron core | 576 | 99.1 | ||||
| 800 | The A iron core | - | - | - | ||
| The B iron core | - | - | ||||
| Embodiment 3 | Fig. 4 | 200 | The A iron core | 518 | 1.2 | 100 |
| The B iron core | 524 | 100 | ||||
| 400 | The A iron core | 507 | 0.2 | 100 | ||
| The B iron core | 508 | 100 | ||||
| 600 | The A iron core | 497 | -2.0 | 100 | ||
| The B iron core | 487 | 100 | ||||
| 800 | The A iron core | 501 | -2.0 | 100 | ||
| The B iron core | 491 | 100 |
The invention effect
If adopt the manufacture method of core material of iron core of the present invention, can obtain non-loaded exciting current I
0Low small core core.And,, obtain non-loaded exciting current I if adopt most preferred embodiment of the present invention
0Low small core core, and then, can boost productivity.Certainly, the present invention is just unshakable in one's determination, just presents effect and be not limited to small core.
Claims (10)
1. the manufacture method of a core material of iron core, by steelplate punching, the steel plate of stacked one or more these stamping-outs also make the plate side mutually butt joint be used to form iron core,
It is characterized in that:
Possess with having the template that nib is arranged and the blanking apparatus of drift, shear the operation of stamping-out core in the position of nib from steel plate, in this operation, to the opposition side of steel plate from drift, the part that is punched with the supportive device supporting plate.
2. the manufacture method of core material of iron core according to claim 1 is characterized in that possessing:
After the operation of above-mentioned steelplate punching core, and then, with the core of supportive device after stamping-out back into stamping-out before the operation of same position;
After, mobile core is to the operation of dividing favored area; And
After, the operation of carrying out the core sorting in minute favored area.
3. the manufacture method of core material of iron core according to claim 1 and 2 is characterized in that above-mentioned supportive device is to use flexible device, and holding power is that whenever to depress 1mm by above-mentioned drift be 100～1000N.
4. the manufacture method of core material of iron core according to claim 1 and 2 is characterized in that above-mentioned supportive device is the single or multiple springs that all every compression 1mm keep the holding power of 100～1000N.
5. the manufacture method of core material of iron core according to claim 1 and 2 is characterized in that above-mentioned iron core is the EI iron core.
6. the manufacturing installation of a core material of iron core, by steelplate punching, the steel plate of stacked one or more these stamping-outs also make the plate side mutually butt joint be used to form iron core, possess:
Be used for when having stamping-out the template mounting steel plate, that have nib and the position of nib to template on the steel plate of mounting shear stamping-out and form the blanking apparatus of the drift of core;
During stamping-out, the position beyond steelplate punching part is used for steel plate is pressed on compacting device on the template;
And during stamping-out, to the opposition side of steel plate, at the supportive device of the position of nib supporting plate stamping-out part from drift.
7. the manufacturing installation of core material of iron core according to claim 6 is characterized in that:
Above-mentioned supportive device has behind stamping-out, with the core behind the stamping-out back into stamping-out before the structure of same position,
And, possess after pushing back core and moving it, in order to carry out the sorting of core, see the core branch favored area that is provided with in the place ahead of moving direction from the stamping-out position.
8. according to the manufacturing installation of claim 6 or 7 described core material of iron core, it is characterized in that above-mentioned supportive device rubber-like device, holding power is that whenever to depress 1mm by above-mentioned drift be 100～1000N.
9. according to the manufacturing installation of claim 6 or 7 described core material of iron core, it is characterized in that above-mentioned supportive device is the single or multiple springs that all every compression 1mm keep the holding power of 100～1000N.
10. according to the manufacturing installation of claim 6 or 7 described small cores usefulness cores, it is characterized in that above-mentioned small core is the EI iron core.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP85609/01 | 2001-03-23 | ||
| JP2001085609A JP2002282959A (en) | 2001-03-23 | 2001-03-23 | Manufacturing method and manufacturing device for core material for small-sized iron core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1378222A CN1378222A (en) | 2002-11-06 |
| CN1229828C true CN1229828C (en) | 2005-11-30 |
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ID=18941092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02118559 Expired - Lifetime CN1229828C (en) | 2001-03-23 | 2002-03-23 | Method and device for producing core material of iron core |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2002282959A (en) |
| KR (1) | KR20020075275A (en) |
| CN (1) | CN1229828C (en) |
| TW (1) | TW565478B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9192974B2 (en) * | 2010-09-30 | 2015-11-24 | Honda Motor Co., Ltd. | Work-punching device, work-punching method, and method for producing element for continuously variable transmission |
| CN102873208B (en) * | 2012-10-17 | 2014-12-24 | 宁波震裕科技股份有限公司 | Blanking device of nonuniform section iron core in progressive die |
| CN105414309B (en) * | 2015-11-12 | 2017-12-19 | 浙江炜驰汽车零部件股份有限公司 | A kind of punching device |
| KR101684934B1 (en) | 2016-09-28 | 2016-12-09 | 장필선 | Pressing metallic mold with short shoot |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6127521U (en) * | 1984-07-17 | 1986-02-19 | 安川精機株式会社 | punching device |
| JPH0543942Y2 (en) * | 1988-07-11 | 1993-11-08 | ||
| JP2001009531A (en) * | 1999-06-28 | 2001-01-16 | Hoden Seimitsu Kako Kenkyusho Ltd | Laminated element manufacturing device |
| JP4115640B2 (en) * | 1999-12-27 | 2008-07-09 | 新日本製鐵株式会社 | Manufacturing method of laminated iron core |
-
2001
- 2001-03-23 JP JP2001085609A patent/JP2002282959A/en active Pending
-
2002
- 2002-03-14 TW TW91104863A patent/TW565478B/en not_active IP Right Cessation
- 2002-03-21 KR KR1020020015337A patent/KR20020075275A/en not_active Application Discontinuation
- 2002-03-23 CN CN 02118559 patent/CN1229828C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| TW565478B (en) | 2003-12-11 |
| JP2002282959A (en) | 2002-10-02 |
| KR20020075275A (en) | 2002-10-04 |
| CN1378222A (en) | 2002-11-06 |
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