CN206204446U - Electric current shield - Google Patents

Abstract

The utility model is related to a kind of electric current shield, mainly being mounted to one can fill in the electroplating bath of electro-plating liquid, the plating trench bottom is provided with the fixed seat of a limitation shield moving range, and its top is provided with one and can drive the winged target of the electric current shield displacement, the electric current shield has one first kickboard and one second kickboard being located in the fixed seat, two kickboard can respectively shift to different height under electro-plating liquid effect, so that the electric current shield constituted one block length more than the fixed seat vertical length, and second kickboard can change the size for blocking length in the case where being driven by the winged target relative to first kickboard displacement, so that the electric current shield blocks length and can correspond to the difference that flies target extended position and be changed.

Description

Electric current shield

Technical field

The utility model is related to a kind of electric current shield, espespecially a kind of to be arranged in electroplating bath, can be with the base being plated The length of plate changes the electric current shield of shield length automatically.

Background technology

In the manufacture field of printed circuit board (PCB), except belonging to subraction of being known as using etching etc. (Subtractive) mode is manufactured outside circuit board, the manufacture of another major class be then in turn using being known as plus Manufactured into the mode of method (Additive)；Addition process is utilized on the substrate of the good thin copper of preplating, coating covering photoresist (D/ F covering framework) and with ultraviolet photoetching development is produced, and allowing needs the place to form circuit to expose, then using electroplating bath Gauge thickness required for the copper foil circuit to the circuit board made on substrate is thickened in the way of electroplating, afterwards on circuit After plating anti-etching tin metal again, the Copper Foil plating for removing photoresist and the bottom not being protected by tin metal is fallen with substrate Upper formation circuit.

In such process, in order to keep electroplate crudy uniformity, the design of electroplating bath with processed Circuit board length it is closely bound up, refer to Fig. 1, the electroplating bath schematic diagram shown in 2, in the electroplating bath design shown in Fig. 1, Mainly there is a cell body 10, the top of cell body 10 to be provided with a winged target 11 for extending downwardly, a top layer kickboard 12 and majority The individual anode basket 13 positioned at the both sides of winged target 11；The winged target 11 is processed into PCB afterwards by a fixture 111 to clamp one Substrate 14；The top layer kickboard 12 is used to stop and reduce the surface that cation is excessively plated to the substrate 14, using than Series of fortified passes ties up to buoyance lift in electroplate liquid, and the top layer kickboard 12 connects the top of the cell body 10 by a slide-bar 121, and by institute State slide-bar 121 and be limited to vertical direction and slide up and down, wherein, when the substrate 14 is installed on the fixture 111, the top layer Kickboard 12 is located at the lower section of the substrate 14, receives buoyancy and is contacted with each other with the bottom of the substrate 14；The anode Anode when basket 13 is as plating, inside has a placement space (not shown), for placing the metal ball as plating raw material, In with the cation in supply reaction to plating solution, then it is plated to circuit board top.

Under general electro-plating situation, the bottom of top layer kickboard 12 is caused when the substrate 14 has enough length When can be less than the bottom of the anode basket 13, the direction of an electric field in current discharge area during because of processing at the substrate 14 is more Uniformly so that the thickness of the circuit of the PCB for finally processing is more uniform, but caused when the length of the substrate 14 is shorter When the bottom of the top layer kickboard 12 can be higher than the bottom of the anode basket 13 (as shown in Figure 2), the region of discharge electricity at it Can the point discharge phenomenon that be produced by the shape of the anode basket 13 and produce the uneven chaotic non-uniform electric field in direction 15 so that be created on the line thicknesses near the part of the bottom of the substrate 14 and thicken, cause on the last PCB for producing Line thicknesses are uneven.

Therefore in order to solve such problem, it is another in addition to coordinating the length of substrate 14 to change different cell bodies 10 Kind of mode is exactly as shown in Fig. 2 the position between the anode basket 13 and the top layer kickboard 12 in cell body 10 installs one Parallel to the shield 16 on the surface of the substrate 14 so that it is more uniform that the top layer kickboard 12 near region of discharge end is in direction It is uneven to solve the problems, such as the PCB line thicknesses produced by point discharge phenomenon in electric field；But both the above mode, either Change electroplating bath or the shield 16 of the various cooperation length of substrate 14 is put into electroplating bath cell body 10, all need extra Equipment changing downtime, and have influence on output value cardinal distance.

Utility model content

To solve the technical problem, the purpose of this utility model is：A kind of electric current being installed in electroplating bath is provided Shield, the electric current shield can correspond to the length change of substrate that be plated, compressed by being installed on the bottom of substrate of winged target and The height of electric current shield plate is adjusted, to prevent from during plating, uneven plating being produced because of the difference of substrate bottom high and low position As a result.

Secondary objective of the present utility model is to provide a kind of electric current shield, and the electric current shield has transformable vertically long Degree so that when electric current shield needs to be fully deployed for the bottom position of counterpart substrate, the vertical length of electric current shield can be big In the vertical length of fixed seat, and when the bottom position for counterpart substrate needs to shorten, the vertical length of electric current shield The vertical length less than fixed seat can be shortened to.

To realize the purpose, the technical scheme that the utility model is used is：A kind of electric current shield, being installed on one can fill out In the electroplating bath of charging plating liquid, the plating trench bottom is provided with the fixed seat of the limitation electric current shield moving range, and Top is provided with one and can drive the winged target of the electric current shield displacement, and the fixed seat is formed with a spacing space, its feature It is：The electric current shield has one first kickboard and one second kickboard for being located in the spacing space, and described first Kickboard and the second kickboard can respectively shift to different height under electro-plating liquid effect so that the electric current shield is constituted One block vertical length of the length more than the fixed seat, and second kickboard being capable of phase in the case where being driven by the winged target Change the size for blocking length for first kickboard displacement.

Detailed construction part on the electric current shield, in some embodiments, first kickboard and the second kickboard Structure is provided with one first locating part and one second locating part respectively so that hung down along one between first kickboard and the second kickboard Nogata is to generation relative displacement.

Wherein, in some embodiments, first locating part is set to more several by the vertically extending projection in bottom, and institute Projection top is stated with the catch greater diameter than the projection, and second locating part is set to more several correspondence projections The sleeve of socket.

And on the embodiment in, first kickboard makees flowing mode between second kickboard, and described second floats Plate is produced to bottom offset by the winged target pushing and pressing, and first kickboard is pushed against in the sleeve by second kickboard To displacement under beginning to produce.

And the level of the detailed set location on the sleeve with the projection, first kickboard or the second kickboard is long Degree more than the fixed seat horizontal length, and more several projections and sleeve be respectively arranged at first kickboard and The corner location of second kickboard.

On the detail shape part between first kickboard and second kickboard, in some preferred embodiments, institute State the first kickboard and have and form two first wallboards of one first spacing distance, and more several the are provided between two first wallboard One supporting plate is connected with each other, and second kickboard has and forms two second wallboards of one second spacing distance, and described two the More several the second supporting plates with more several first supporting plate Heterogeneous Permutations, and first interval are provided between two wallboards More than wherein another one of in distance or second spacing distance, make first kickboard or second kickboard One of them can displacement enter the kickboard with the larger spacing distance two described between wallboard.

In a preferred embodiment, described two second wallboards are respectively formed with one in the correspondence position of first supporting plate Groove so that second kickboard cannot contact first supporting plate during moving down.

In addition, in the shape design of thin portion, in some embodiments, second wallboard is distinguished in two opposite sides position It is formed with male part of the horizontal length more than first kickboard；First supporting plate has two to be connected to described the The rake of one wallboard and one it is connected to horizontal part between two rake.

Compared with prior art, using the technical scheme the utility model has the advantage of：In order that electric current shield Can correspond to the change for flying target development length, and the bottom position for flying target can be corresponded to and enable the length of electric current shield by More than the state of the vertical length of fixed seat, it is changed into the length of electric current shield and is less than the state of the vertical length of fixed seat, institute Stating electric current shield has the first kickboard and the second kickboard for being located in the spacing space, and first kickboard and described second float Different height are shifted in the presence of the electroplating solution that plate can be filled in electroplating bath so that the winged target is not supported completely When pushing up the electric current shield, the shield length that the electric current shield is constituted can be more than the vertical length of the fixed seat, And after supporting completely, second kickboard is subject to the winged target to drive and can change relative to first kickboard displacement The size for blocking length so that described to block vertical length of the length less than the fixed seat so that the electric current shield Block length can corresponding circuits plate bottom position difference and significantly changed.

Brief description of the drawings

Fig. 1, Fig. 2 are the preceding case schematic diagram of the utility model electric current shield；

Fig. 3 is profile of the utility model in an embodiment；

Fig. 4 is the side constitutional diagram of Fig. 3；

Fig. 5 is the stereogram of the first kickboard in Fig. 3 embodiments；

Fig. 6 is the stereogram of the second kickboard in Fig. 3 embodiments；

Fig. 7 is generalized section of the electric current shield by the effect of top layer kickboard in Fig. 3 embodiments；

Fig. 8 is the schematic diagram of direction of an electric field in Fig. 3 embodiments；

Fig. 9 is profile of the utility model in another embodiment；

Figure 10 is profile of the utility model in another embodiment.

Description of reference numerals：10- cell bodies；11- flies target；111- fixtures；12- top layer kickboards；121- slide-bars；13- anode baskets； 14- substrates；15- confusion non-uniform electric fields；16- shields；20- electric current shields；The kickboards of 21- first；211- projections；The walls of 212- first Plate；The spacing distances of 213- first；214- accommodation spaces；The supporting plates of 215- first；216- rakes；217- horizontal parts；218- is recessed Groove；219- projections；The kickboards of 22- second；The wallboards of 221- second；The spacing distances of 222- second；The supporting plates of 223- second；224- is recessed Groove；225- male parts；226- accommodation spaces；227- projections；23- stopping means；The locating parts of 231- first；232- second is spacing Part；233- projections；234- sleeves；235- catch；24- blocks space；25- blocks length；30- electroplating baths；31- fixed seats； 310- wall portions；The spacing spaces of 311-；312- vertical lengths；313- limiting sections；50- flies target；51- fixtures；60- top layer kickboards；61- Slide-bar；62-V type grooves；70- substrates；80- liquid levels；81- directions of an electric field.

Specific embodiment

The utility model, advantage of the present utility model and feature are further described with reference to specific embodiments and the drawings Will be with description and it is apparent.

Refer to shown in Fig. 3 and Fig. 4, in a preferred embodiment, being installed on one can fill out the utility model electric current shield 20 In the electroplating bath 30 of charging plating liquid (not shown), the bottom of the electroplating bath 30 is provided with the limitation electric current shield 20 and moves The fixed seat 31 of scope, the fixed seat 31 is formed with a spacing space 311, and the top of the electroplating bath 30 is provided with one and flies target 50, and one drive the electric current shield 20 displacement top layer kickboard 60, the top layer kickboard 60 by a slide-bar 61 (only in Fig. 3 In draw) be connected to the top of the electroplating bath 30, and the top layer kickboard 60 can be in the work of the electro-plating liquid (not shown) Under, because the difference of proportion is by buoyancy and buoyance lift so that the top of the top layer kickboard 60 is connected with the substrate 70, in addition, When one is additionally provided with the top layer kickboard 60 being compressed with the top of the top layer kickboard 60 for the substrate 70, the base is helped Plate 70 is fixed on the V-type groove 62 of the middle position of top layer kickboard 60.

More precisely, refer to shown in Fig. 3 and Fig. 4, in the present embodiment, the fixed seat 31 is parallel to each other with two Wall portion 310, the wall portion 310 of the fixed seat 31 has a vertical length 312, and the shape between wall portion described in two 310 Into the spacing space 311, and the electric current shield 20 is located in the spacing space 311；Additionally, the wall portion 310 apical margin is additionally provided with one and extends towards the inside of the spacing space 311, and perpendicular to the wall portion 310 as limiting section 313 protrusive board (not showing in Fig. 4)；To be illustrated, the spacing space 311 is in the present embodiment only by the fixed seat 31 two wall parts 310 is limited by both sides, without being limited by the limiting section 313 so that the spacing space 311 The vertical length 312 of the scope more than the wall portion 310 in vertical direction.

Come the part of the electric current shield 20：Equally refer to shown in Fig. 3 and Fig. 4, in the present embodiment, the electric current Shield 20 is located in the spacing space 311, and can be in the presence of the electro-plating liquid, because the difference of proportion is by buoyancy Buoyance lift, with one first kickboard 21 and one second kickboard 22, the horizontal length of first kickboard 21 is more than the fixed seat 31 Horizontal length, and first kickboard 21 be connected by a stopping means 23 with second kickboard 22 and can be in a Vertical Square Relative displacement is produced upwards, wherein, the stopping means 23 is by one first locating part for being installed in first kickboard 21 231 and one one second locating part 232 for being installed in second kickboard 22 constituted；Certainly, the utility model does not have especially Limit the relation between the horizontal length and the fixed seat 31 of second kickboard 22 so that in other embodiments, described The horizontal length of the second kickboard 22 can be equal to the horizontal length of first kickboard 21, and more than the level of the fixed seat 31 Length.

Relation between first kickboard 21 and the fixed seat 31, the root edge of first kickboard 21 has a court The projection 211 (Fig. 4 do not show) prominent to the lateral direction of spacing space 311, and first kickboard 21 and it is described second float Plate 22 all can in the presence of the electro-plating liquid (not shown) buoyance lift so that the electric current shield 20 is filled out in the electro-plating liquid When noting the buoyance lift when electroplating bath 30, the projection 211 is contacted with each other with the limiting section 313, and is limited described first and floated The buoyance lift of plate 21 highly, and and then second kickboard 22 and first kickboard 21 is shifted to different height, and allow institute State that electric current shield 20 constituted one blocks vertical length 312 of the length 25 more than the fixed seat 31.

In the structure division of component, more precisely, refer to shown in Fig. 4 and Fig. 5, first kickboard 21 is mutual with two The first parallel wallboard 212, two first wallboards 212 parallel to each other also pass through in addition to having the projection 211 in root edge Apart from one another by one first spacing distance 213 and around going out an accommodation space 214 inserted for second kickboard 22；And in order to strong Change the structural strength of first kickboard 21, also have between two first wallboards 212 parallel to each other more several first Fagging 215 to link two first wallboards 212 parallel to each other, wherein, more several first supporting plates 215 have two points The horizontal part 217 that the rake 216 and of first wooden partition 212 is linked between two rake 216 is not connected to； And four corner locations of first kickboard 21 are then disposed on as the projection 233 of first locating part 231.

Same refer to shown in Fig. 4 and Fig. 6, and second kickboard 22 has two second wallboards 221 parallel to each other, two Second wallboard 221 parallel to each other is gone back apart from one another by one second spacing distance 222, and between the second wallboard 221 described in two It is provided with a two ends and connects second wallboard 221 and the second supporting plate 223 compressed for the top layer kickboard 60；In order to solve Interference problem, Heterogeneous Permutation between second supporting plate 223 and first supporting plate 215, and in the second wallboard described in two The groove 224 of more several correspondences position of the first supporting plate 215 is additionally provided with 221；And as second locating part 232 The sleeve 234 be then disposed on four corner locations of second kickboard 22；Wherein, in the present embodiment, described Two wallboards 221 are also respectively formed with a horizontal length and are more than in the male part 225 of first kickboard 21 in two opposite sides position.

Wherein, refer to shown in Fig. 3, Fig. 5 and Fig. 6, why the electric current shield 20 can change described blocks length 25 structure design, is to be more than second spacing distance 222 using first spacing distance 213 so that described first floats During both relative movements of plate 21, described second kickboard 22, second kickboard 22 insert first kickboard 21 two described in the In the accommodation space 214 between one wallboard 212, described length 25 is blocked to change.

And the part of the stopping means 23 refer to shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, in the present embodiment described first Locating part 231 is the projection for extending vertically out for the bottom of more several first wall portions 310 for being located at the first kickboard 21 233, it is the sleeve of more several second wall portions 310 installed in second kickboard 22 that second locating part 232 is 234；More several projections 233 are respectively arranged at the corner location of first kickboard 21, as more several sleeves 234 The corner location of second kickboard 22 is disposed on, is socketed with the correspondence projection 233 so that the interior table of the sleeve 234 Face contacts with the surface of the projection 233, described during ensuring first kickboard 21 with 22 relative displacement of the second kickboard The displacement in vertical direction is only had between first kickboard 21 and second kickboard 22, without having caused by the action such as rotation Other can cause the possibility interfered or block between first kickboard 21 and second kickboard 22.

In addition, refer to shown in Fig. 3, Fig. 4 and Fig. 8, in order to prevent 22 points of first kickboard 21 and second kickboard From the top of the projection 233 is additionally provided with greater diameter than the projection 233, and prevents the sleeve 234 during noose cannot Depart from the catch 235 of the projection 233.

Refer to shown in Fig. 8, when deployed, the electro-plating liquid is filled in when in the electroplating bath 30, described first floats Plate 21 is linked by the catch 235 with second kickboard 22 with the sleeve 234, first kickboard 21 and the fixation Seat 31 is spacing with the limiting section 313 by the projection 211 so that first kickboard 21, second kickboard 22, described The three of fixed seat 31 connects and is collectively forming one and blocks space 24, to block electricity high completely in the lower section of the top layer kickboard 60 The chaotic electric field in stream area, makes the liquid level of the electro-plating liquid produce for 80 times more uniform direction of an electric field 81, cation to be limited Moved along rectilinear direction and can uniformly electroplated, do not interfere with the thickness of finished product, to reach the purpose of control uniformly-coating.

On action part, refer to shown in Fig. 3 and Fig. 7, in the present embodiment, when the winged target 50 passes through the substrate 70 compress the top layer kickboard 60, when the top layer kickboard 60 compresses second supporting plate 223 of the electric current shield 20 again, In addition to the bottom that the bottom of the electric current shield 20 is compressed and contacted the electroplating bath 30 by the top layer kickboard 60, described Two kickboards 22 also produce relative displacement because being compressed by the top layer kickboard 60 with first kickboard 21, are placed into the appearance The size of length 25 is blocked in 214 between being empty, and then described in change so that the electric current shield 20 can be with the length of the substrate 70 Degree change described blocks length 25 to change；Additionally, during second kickboard 22 inserts the accommodation space 214, First supporting plate 215 of first kickboard 21 is moved in the groove 224 of second kickboard 22 so that described Two kickboards 22 cannot contact first supporting plate 215 during moving down.

Hereinafter there is some to illustrate, be first on the relation between the top layer kickboard 60 and electroplating bath 30, In the embodiment, the top layer kickboard 60 is connected with the electrolytic cell 30 by the slide rail 61, but the utility model is simultaneously Without the annexation limited between the top layer kickboard 60 and the electrolytic cell 30 so that in certain embodiments, the slide rail 61 can limit the top layer kickboard 60 with other replaces in other mechanisms that Vertical Square is moved up, or even in some embodiments In, the top layer kickboard 60 can not include other mechanisms that the limitation top layer kickboard 60 is moved up in Vertical Square, and only The top layer kickboard 60 is positioned using the top of the top layer kickboard 60 V-type groove 62.

In addition, it must be compressed by the top layer kickboard 60 that the utility model does not limit second kickboard 22 yet And be located at Vertical Square and move up so that in certain embodiments, the design of the fixture 51 on the winged target 50 is changed, So that when the fixture 51 be for one there is transverse direction opening ㄇ font fixtures when, be by upper and lower two positions fixed institute simultaneously Substrate 70 is stated, and allows second kickboard 22 that the top layer kickboard 60 is directly compressed by the bottom part of the fixture 51, Or, in the mechanical strength of the substrate 70 embodiment higher, directly compress the top layer kickboard 60 using the substrate 70.

On the part for blocking length 25, in the present embodiment as shown in fig. 7, described after changing blocks length 25 It is the vertical length 312 for substantially identical to (being slightly less than) fixed seat 31, but in the utility model other embodiment, The length value size for blocking length 25 after change can be less than the vertical length 312.

On the relative movement relation between first kickboard 21, second kickboard 22 and the fixed seat 31, In the present embodiment, when the electric current shield 20 change it is described block length 25 when, be to be subject to the top in second kickboard 22 Layer kickboard 60 pushing and pressing i.e. generation is subject to the sleeve 234 of second kickboard 22 to bottom offset, then first kickboard 21 To displacement, but not restricted first kickboard 21 of the utility model, second kickboard 22 and institute under beginning to produce after pushing and pressing State the order relatively moved between fixed seat 31 so that in other embodiment of the present utility model, first kickboard 21, institute Stating between the second kickboard 22 and the fixed seat 31 may be while produces relative movement (such as in first kickboard 21, described A spring is all installed between second kickboard 22 and the fixed seat 31)；And be first in first kickboard in certain embodiments Relative movement is produced between 21 and the fixed seat 31, (such as the present embodiment is profit after securing the above the position of the first kickboard 21 With the bottom of electroplating bath 30 or other embodiment using the other fixed structures of design in the fixed seat 31), Ran Houcai Relative movement is produced between first kickboard 21 and second kickboard 22.

Refer to shown in Fig. 3 and Fig. 9, likewise, the utility model does not limit first kickboard 21, described second yet The mode of relative displacement is produced between kickboard 22 so that in the fig. 3 embodiment, being to compress described the by the top layer kickboard 60 Two kickboards 22, then compress first kickboard 21 to move the electricity by the part of the sleeve 234 of second kickboard 22 Stream shield 20, but in other embodiments as shown in figure 9, can be designed by changing the shape of first kickboard 21, such as Fig. 9 is Increase the height of the horizontal part 217 so that the electric current shield 20 movement relatively moved with the fixed seat 31 when, be by The top layer kickboard 60 compress simultaneously first kickboard 21 the horizontal part 217 and second kickboard 22 described second Supporting plate 223 moves the electric current shield 20.

Refer to shown in Fig. 3 and Figure 10, in the fig. 3 embodiment, the screening can be changed on the electric current shield 20 The structure design of length 25 is kept off in paragraph explanation above, but not restricted first spacing distance of the utility model 213 must be more than second spacing distance 222, also do not limit the electric current shield 20 and are blocking length 25 described in change Shi Yiding is inserted in the accommodation space 214 of first kickboard 21 by second kickboard 22 so that art technology Personnel after Fig. 3 embodiments have been seen, should be able to simply expect changing as seen in the embodiment shown in fig. 10 first spacing distance 213 with Magnitude relationship between second spacing distance 222 so that in Figure 10 embodiments, second spacing distance 222 is more than First spacing distance 213, and described in two second wallboard 221 formed one it is described block length 25 change when, for described The accommodation space 226 that first kickboard 21 is inserted, wherein, in order to prevent between second supporting plate 223 and first kickboard 21 Interference problem, in being provided with a groove 218 passed through for second supporting plate 223 in first kickboard 21.

Additionally, being used to spacing knot between first kickboard 21, second kickboard 22, the three of the fixed seat 31 Structure part, refer to shown in Fig. 3 and Figure 10, although in the fig. 3 embodiment, only floating with described second in first kickboard 21 The stopping means 23 is set between plate 22, and is using the projection between first kickboard 21 and the fixed seat 31 211 are fixed with the limiting section 313, but not restricted first kickboard 21 of the utility model, second kickboard Link mechanism between 22 and the fixed seat 31 so that those skilled in the art answer can be known in this reality after this explanation has been seen With in new other embodiment, the stopping means 23 in position, can be arranged on first kickboard 21 solid with described Between reservation 31, the projection 211 can be arranged on first kickboard 21 and described second with the protrusive board of the limiting section 313 Between kickboard 22, or other are set between first kickboard 21, second kickboard 22, the fixed seat 31 it are available for Two inter-modules prevent two inter-modules other stopping means 23 disconnected from each other in relative movement in a vertical direction；And it is described Stopping means 23 is not necessarily intended to be the projection 233 and the sleeve 234 as described in embodiment in species, also, and can Coordinate projection or such as only only two projections 219 worked in coordination, projection 227 in Figure 10 such as slide rail, chute, pulleys to be other Etc. design.

Finally, although in several embodiments, the electric current shield 20 is only by first kickboard 21, described second Kickboard 22 is constituted, but those skilled in the art seen it is described above after answer can be known, it is of the present utility model other implementation In example, the quantity of the kickboard that the electric current shield 20 has can be added, i.e., except first kickboard 21, second kickboard Outside 22, in addition can be further comprising one the 3rd kickboard, the design of one the 4th kickboard with identical like configurations to constitute Electric current shield 20 is stated, the excursion of length 25 is further blocked described in increase.

Explanation and embodiment above is only exemplary, does not constitute any limitation to scope of the present utility model.This Art personnel should be understood that can be to the utility model technology under without departing from spirit and scope of the present utility model The details and form of scheme are modified or are replaced, but these modifications and replacement are each fallen within protection domain of the present utility model.

Claims (9)

1. a kind of electric current shield, being installed on one can fill in the electroplating bath of electro-plating liquid, and the plating trench bottom is provided with a limitation The fixed seat of the electric current shield moving range, and top is provided with one and can drive the winged target of the electric current shield displacement, it is described Fixed seat is formed with a spacing space, it is characterised in that the electric current shield have be located in the one first of the spacing space Kickboard and one second kickboard, and first kickboard and the second kickboard can respectively shift to not under electro-plating liquid effect With height so that what the electric current shield was constituted one blocks vertical length of the length more than the fixed seat, and described second Kickboard can change the size for blocking length in the case where being driven by the winged target relative to first kickboard displacement.

2. electric current shield according to claim 1, it is characterised in that：Structure is provided with first kickboard respectively with the second kickboard One first locating part and one second locating part so that produced along a vertical direction between first kickboard and the second kickboard Relative displacement.

3. electric current shield according to claim 2, it is characterised in that：First locating part is more several vertical by bottom The projection of extension, and projection top has the catch greater diameter than the projection, and second locating part is majority The sleeve of the individual correspondence projection socket.

4. electric current shield according to claim 3, it is characterised in that：Second kickboard is by the winged target pushing and pressing energy Enough produce to bottom offset, but first kickboard by second kickboard sleeve pushing and pressing can produce under to displacement.

5. electric current shield according to claim 3, it is characterised in that：The horizontal length of first kickboard or the second kickboard More than the horizontal length of the fixed seat, and more several projections and sleeve are respectively arranged at first kickboard and institute State the corner location of the second kickboard.

6. electric current shield according to claim 1, it is characterised in that：First kickboard have form one first spacer From two first wallboards, and more several first supporting plates be provided between two first wallboard be connected with each other, and described second is floating Plate has and forms two second wallboards of one second spacing distance, and is provided with more several with the majority between two second wallboard In second supporting plate of individual first supporting plate Heterogeneous Permutation, and first spacing distance or second spacing distance wherein One of more than wherein another, make one of first kickboard or second kickboard can displacement enter there is larger institute State spacing distance the kickboard two described between wallboard.

7. electric current shield according to claim 6, it is characterised in that：Described two second wallboards are in first supporting plate Correspondence position is respectively formed with a groove so that second kickboard cannot contact first support during moving down Plate.

8. electric current shield according to claim 6, it is characterised in that：Second wallboard distinguishes shape in two opposite sides position Male part of the Cheng Youyi horizontal lengths more than first kickboard.

9. electric current shield according to claim 6, it is characterised in that：First supporting plate has two to be connected to institute The rake and one for stating the first wallboard are connected to the horizontal part between two rake.