Background technology
Between optical fiber, connect, when perhaps being connected between optical fiber and the optical device, how to guarantee that the high precision butt joint of optical axis is extremely important.The available technology adopting fiber stub carries out the butt joint of two optical fiber, and simultaneously, two lock pins are positioned at the sleeve pipe of adapter.
Prior art middle sleeve and lock pin are that starting material are made mostly with the zirconia ceramics.It mainly is because it has good wear resistance as starting material, has the not advantage of cracky of high tenacity in stupalith that the quilt of zirconia ceramics uses in a large number.Ceramic insertion core and telescopic are made by blank making and precision optical machinery processing two and are partly formed.Wherein, the blank making is that injection molding in the mould of special use forms through high temperature sintering then after the granulation with the high-purity zirconium dioxide powder stock of special processing.And then precise finiss processing, to reach the working accuracy of submicron order.Above-mentioned complex manufacturing technology, yield rate is low, thereby make its reduce cost and production in enormous quantities aspect be restricted.Especially aspect the development of miniaturization, multiple-core and the abnormal shapeization of fiber stub, more be subjected to severely restricts.
We know that the principle of electroforming is as negative electrode the grand master pattern of making by desired shape in advance, with electroforming material as anode, together put into the metal salt solution identical with anode material, pass to direct current, under electrolytic action, master surface deposits the metal plating layer gradually, takes out from solution after reaching required thickness, electroformed layer is separated with grand master pattern, just obtain and the corresponding metal duplicate of grand master pattern shape.Because fiber stub and telescopic accuracy requirement are higher, therefore, people seek can make lock pin and sleeve pipe by galvanized mode.
The utility model content
The utility model purpose is exactly to propose a kind of simple in structure, electroforming apparatus that working (machining) efficiency is higher in order to overcome the deficiencies in the prior art.
In order to reach the foregoing invention purpose, the technical solution of the utility model is: a kind of making fiber stub and telescopic electroforming apparatus, it comprises electrotyping bath, be arranged on anode incoming end and negative electrode incoming end on the electrotyping bath cell wall, be equiped with electroforming solution in the described electrotyping bath respectively, the metal-plated material that is connected with the anode input terminus, be arranged in the electrotyping bath rotationally and the core identical with the be connected mechanism of overdriving of described negative electrode incoming end with the interior hole shape of fiber stub, described driving mechanism comprises that output shaft is arranged on the drive-motor in the electrotyping bath vertically, the driving gear that is meshed and is connected with the drive-motor output shaft, the follow-up pulley that is meshed with driving gear, the two ends up and down and the described follow-up pulley of described core are fixedly connected.
Further, described core is connected with lower plate respectively by tensioning bolt in two ends up and down, and described follow-up pulley drives core and does spinning, and described driving gear drives main shaft drive clamping plate rotatablely move as integral body.
Also be provided with conducting slip ring between described train wheel bridge and the electrotyping bath, described core is connected with the negative electrode incoming end by conducting slip ring.
Described metal-plated material is a nickel, and described nickel is spherical, and it is loaded in the titanium basket, and described titanium basket is connected with the anode incoming end.
In further embodiment, described titanium basket is two, and is separately positioned on the both sides in the plating tank, in the electrotyping bath a plurality of cores can be installed simultaneously.
Described core is cylindrical or is different from columniform abnormally-structured.
Because the utilization of technique scheme, the utility model compared with prior art has following advantage: the utility model electroplanting device is simple in structure, it makes core rotate by electric motor driving, can guarantee that metal is plated on the core equably, thereby guaranteed the precision of metal blank, working (machining) efficiency is higher.
Embodiment
Below in conjunction with accompanying drawing the utility model preferred embodiment is elaborated:
Electroplanting device as shown in Figure 1, the plating tank 4 that comprises a sealing, the left and right sides of plating tank 4 is provided with anode incoming end 19, its upside is provided with negative electrode incoming end 20, simultaneously, upside at plating tank 4 also is equipped with drive-motor 6, and the output shaft 11 of drive-motor 6 extends to the bottom of electrotyping bath 4 vertically.
The left and right sides is provided with metal-plated material 1 in electrotyping bath 4, in the present embodiment, metal-plated material 1 is made up of the titanium basket 21 that is connected with anode incoming end 19 and several nickel balls of being arranged in the titanium basket 21, simultaneously, being incorporated with the anode (not shown) that polypropylene material makes in titanium basket 21 falls in the plating bath to prevent the anode sludge.
Also be provided with the core 2 identical in the electrotyping bath 4 with hole shape in the joints of optical fibre to be plated, in the present embodiment, core 2 has two, each core is connected with last lower plate 9,10 respectively by tensioning bolt 14,15 at two ends about in the of 2, and core 2 is on the concentric circumferences that is distributed in lower plate 9,10.Simultaneously, the center of last lower plate 9,10 and the output shaft 11 of motor 6 are fixedly connected, also be connected with the driving gear 7,8 that is meshed with motor output shaft in the both sides of train wheel bridge 9, the follow- up pulley 12,13 that is meshed with driving gear 7,8, like this, under the driving of motor 6, in electrotyping bath 4, do integral body under last lower plate 9,10 is driven by driving gear 7,8 and rotatablely move, and under the driving of follow-up pulley 12,13, core 2 is also done the spinning campaign.
Be fixedly connected with conducting slip ring 17 between train wheel bridge 9 and cell wall 4, described core 2 is realized and being connected of negative electrode incoming end 20 by conducting slip ring 17.
Simultaneously, on the diapire in electrotyping bath 4, also be provided with base 16, above-mentioned whole rotating element is supported on this base 16.
Also filled with electroforming solution 5 in electrotyping bath 4, described electroforming solution 5 is mainly nickel sulfamic acid, and this nickel salt mainly provides required nickel metal ion of nickel plating and the double conducting salt that plays a part; Simultaneously also be added with sodium-chlor anode activator within it, boric acid pH buffer reagent, the alkene sulfonate releasing agent also can increase an amount of other additive as required.Following table is the proportioning table of electroforming solution in the present embodiment:
Sequence number |
Title |
Composition |
Content |
1 |
Main salt, conducting salt |
Nickel sulfamic acid |
700g/L |
Sequence number |
Title | Composition |
Content | |
2 |
The anode activator |
Nickelous chloride |
15g/L |
3 |
The pH buffer reagent |
Boric acid |
45g/L |
4 |
Releasing agent |
Alkene sulfonate |
15cc/L |
5 |
Stiffening agent |
Antimony or antimony compounds |
In right amount |
As follows to the function analysis of each component of electroforming solution below:
Main salt--nickel sulfamic acid is the main salt in the nickel liquid, and nickel salt mainly provides required nickel metal ion of nickel plating and the double conducting salt that plays a part.The sedimentation rate height of nickel sulfamic acid, good dispersity, stress is little, is suitable for use as the main salt of electroformed nickel liquid most.Nickel salt content height can use the high cathode current density, and sedimentation velocity is fast, is commonly used for the thick nickel of high-speed plating.But excessive concentration will reduce cathodic polarization, and dispersive ability is poor, and the carry-over loss of plating bath is big.Nickel salt content is low, and sedimentation velocity is low, but dispersive ability is fine, can obtain the careful bright coating of crystallization.
Anode activator--nickel anode is very easily passivation in galvanization, normally dissolves in order to guarantee anodic, needs to add in plating bath a certain amount of anode activator.Chlorion is best nickel anode activator.Thereby adopt nickelous chloride as the anode activator.
Buffer reagent--boric acid is used as buffer reagent, and the pH value of nickel-plating liquid is maintained in certain scope.When the pH value of nickel-plating liquid is low excessively, cathode efficiency will be descended; And pH value is when too high, because H2 constantly separates out, pH value near near the liquid layer cathode surface is raise rapidly, cause Ni (OH) 2 colloidal to generate, and 2 being mingled with in coating of Ni (OH) increase coating fragility, and Ni (OH) 2 colloids are in the absorption of electrode surface simultaneously, also can cause the delay of bubble hydrogen, the coating porosity is increased at electrode surface.Boric acid not only has the PH shock absorption, and he can improve cathodic polarization, thereby improves plating solution performance.The existence of boric acid also helps the mechanical property of improving coating.
Releasing agent--electroplating technology and galvanoplastics have a very big difference: during plating, coating should be attached on the plating piece tightly, plays protection or decoration function to plating piece.And in electroforming, electroforming device is electroplated moulding on mould, needs then mould is removed from electroforming device.Thereby electroforming device can not be in conjunction with must be too tight, in order to avoid hinder the stripping process of electroforming device with mould.In this patent, in electrotyping bath, add and contain a certain amount of saliniferous organic sulfide, it can be attracted to the surface of the heart yearn (being the electroforming mould) of electroforming device, formation one deck aims at is convenient to the passive film that electroforming device is peeled off from mould, and the bonding strength between stainless steel core wire and the electroforming thing is greatly reduced.Like this, produce complementary effect between the passive film that produces by electron chemistry and the compression internal stress of different metal, can when from electroforming device, extracting out or push out heart yearn, reach the effect of removing heart yearn simply.
Stiffening agent--because the hardness of metallic nickel is big inadequately, do not reach the requirement of fiber stub, make the hardness of metallic nickel lock pin bring up to HRC50~60 so in electroforming solution, should add stiffening agent, to satisfy service requirements from Rockwell hardness HRC15~18 to hardness.Stiffening agent can adopt antimony or antimony compounds.
Electroplating process is, when electroforming solution is heated to proper temperature (40~50 ℃), after the energising, the electrode in the electrotyping bath reacts: the oxidizing reaction that anode takes place is Ni-2e=Ni
2+, the reduction reaction that negative electrode takes place is Ni
2++ 2e=Ni so metallic nickel just is electroplated onto on the core 2, forms electroplating blank 3.
In the present embodiment, core 2 adopts the surface through smooth finished stainless steel core, and like this, the electroplating blank 3 of generation is extracted its internal surface of back out at core and be need not reprocessing.And in the utility model, the shape of core 2 is not limited to cylindrical, can select special-shaped core according to the needs that use, and can realize equally electroplating.
Above-mentionedly in conjunction with the accompanying drawings the structure of electroforming apparatus is illustrated; but can not limit protection domain of the present utility model with this; number as core can be regulated between 2~12; all equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.