Outer circle parcel plating part dress clip toolTechnical field
The present invention relates to part field of electroplating, particularly, are related to a kind of outer circle parcel plating part dress clip tool.
Background technique
Tin coating has higher chemical stability in an atmosphere, and tin coating is soft, has good ductility, screwing up propertyAnd solderability, the part commonly used in requiring improving welding property, part and oxygen system zero with the nonmetallic contact of sulfur-bearingProtection of part etc., it can also be used to which anti-attrition prevents piston stagnant dead and improves the leakproofness of accurate thread piece etc..
The tin plating acid-base property according to tin plating solution is different, is usually divided to alkaline tin plating and two kinds of techniques of Acidic Sn electroplating.With alkalinityFor tin plating, part 10 to be plated is cathode, and when energization, following reaction occurs for cathode:
Cathode reaction: [Sn (OH)6]2-+4e→Sn+6OH-
2H++2e→H2↑
Anode reaction: Sn+6OH--4e→[Sn(OH)6]2-
Part 10 to be plated is used as cathode, and cathode reaction occurs, and tin deposition forms tin coating, tin plating work in cathode piece surfaceIt is as shown in Figure 1 to make principle.
Suitable conductive fixture dress hang zero part must be selected during part is tin plating, fixture requires safely and reliably fill extensionPart, while it is ensured that good electric conductivity is remained between part and electrode.
For certain part 10 to be plated as shown in Fig. 2, part material is 40CrNiMoA, overall size is big (φ 120mm × 386mm),Part weight (about 3.5KG), it is desirable that, part outer circle rest part, inner bore of part and part both ends of the surface tin plating to parts locally outer circleIt need to protect tin plating without allowing.Because of design of part complexity, there are the following problems for the tin plating process of part: inner hole is elongated and structure is multipleMiscellaneous, protection is difficult, is easy to appear and accidentally plates；Pts wt is larger, high to dress clip tool rigid requirements；Part disassembly is complicated, operatesDifficulty, fixture utilization rate are low.
Summary of the invention
The present invention provides a kind of outer circle parcel plating part dress clip tools, to solve using existing dress clip tool dressIt is difficult to part protection when hanging elongated inner hole and complicated part, so that part is easy to appear the technical issues of accidentally plating.
The technical solution adopted by the invention is as follows:
A kind of outer circle parcel plating part dress clip tool, part to be plated are in hollow shaft tubular, the upper surface of part to be plated,Lower end surface, axis hole, the outer circle of the first shaft part and the second shaft part outer circle electroplating process in be both needed to be protected, dress clip tool packetInclude: for clamping part to be plated so that part to be plated hangs on the clamp body in electroplating pool vertically, clamp body be connected with power supply andIt is prepared by conductive material to form same electric conductor with part to be plated；Clamp body is used to distinguish the both ends of contact part to be plated, withUpper surface and lower end surface to part to be plated are protected respectively, and prevent the electroplate liquid in electroplating pool by the both ends of part to be platedInto in the axis hole of part to be plated；Dress clip tool further includes protection cylinder part, and protection cylinder part is for being set in the first of part to be platedIt is protected on shaft part and the second shaft part with the outer circle of outer circle and the second shaft part respectively to the first shaft part.
Further, clamp body includes the upper end cover and lower cover being oppositely arranged；Upper end cover is for contact part to be platedUpper end seals the upper end of part to be plated to protect upper surface；Lower cover is used for the lower end of contact part to be plated with rightLower end surface is protected, and seals the lower end of part to be plated.
Further, clamp body further includes for by the pull rod of upper end cover and the axially opposed tension of lower cover；Pull rod is wornIn the axis hole of part to be plated and part to be plated is stretched out at both ends respectively；Upper end cover is installed in pull rod and stretches out part upper end to be platedIn upper body of rod, and it is threadedly coupled with upper body of rod；Lower cover is installed in pull rod and stretches out in the lower body of rod of part lower end to be plated, and underThe body of rod is threadedly coupled.
Further, clamp body further includes the first locking for being installed in the upper body of rod of pull rod and being threadedly coupled with upper body of rodNut；The lower end of pull rod is not pierced by lower cover, and the first locking nut is used for the upper end cover after being tensed by pull rod is opposite and lower endThe opposite locking of lid；Or the lower end of pull rod is pierced by lower cover, and pull rod is pierced by and is installed on the body of rod after lower cover and its screw thread connectsThe second locking nut connect, the second locking nut are used to cooperate with the first locking nut, upper after being tensed by pull rod is oppositeEnd cap and the opposite locking of lower cover.
Further, the lower end surface of upper end cover is recessed the lower apical margin of annular, the upper end of lower apical margin contact part to be platedFace；The upper surface of lower cover is recessed the upper apical margin of annular, and upper apical margin supports the lower end surface of part to be plated.
Further, clamp body further includes the first seal and the second sealing for sealing part both ends to be plated respectivelyPart；First seal is installed in the cavity of upper end cover, to be caught in the axis of part to be plated downwards for the upper end by part to be platedThe upper end of part to be plated is sealed in hole；Second seal is installed in the cavity of lower cover, for by under part to be platedEnd is caught in the lower end that part to be plated is sealed in the axis hole of part to be plated upwards.
Further, clamp body further includes connection sealing element, and connection sealing element is used to be arranged in the peace of part upper end to be platedIn mounting hole and upper end cover on rim, to protect mounting hole and part to be plated made to be connected with upper end cover；Lower cover is with bulletProperty rubber blocking, rubber block for being filled in axis hole by the lower end of part to be plated, with to part to be plated lower end surface carry outProtect and seal the lower end of part to be plated.
Further, clamp body further includes existing with the detachable conductive hook being connected of upper end cover, conductive hook for hookSo that clamp body is hung on conductive rod vertically on conductive rod above electroplating pool, conductive hook is also connected with power supply.
Further, protection cylinder part includes being prepared by elastic material and for being tightly placed in the first shaft part and second respectivelyProtection cylinder in shaft part outer circle；After protection cylinder is used to be inserted in part to be plated by the lower end of part to be plated, then it is tightly placed in and is correspondingly arrangedThe first shaft part or the second shaft part outer circle on.
Further, protection cylinder part includes for distinguishing banding in the protection cylinder on the first shaft part and the second shaft part outer circle；Protection cylinder includes along the first half of the setting of axisymmetrical subdivision and the second half, and by the first half and the second half rings are tightLocking strap.
The invention has the following advantages:
Outer circle local tin plating part of the invention dress clip tool, including the clamp body for clamping part to be plated, fixtureBody is connected with power supply and is prepared by conductive material to form same electric conductor with part to be plated, becomes cathode when plating, it is ensured thatElectroplated layer is in piece surface normal sedimentation to be plated, to guarantee that the electroplated layer quality at position need to be electroplated in part outer surface to be plated；AgainClamp body is used to distinguish the both ends of contact part to be plated, with to part to be plated upper surface and lower end surface protect respectively, andPrevent the electroplate liquid in electroplating pool from being entered in the axis hole of part to be plated by the both ends of part to be plated, and filling clip tool further includes protectionCylinder part, protection cylinder part be used for be set on the first shaft part and the second shaft part of part to be plated with respectively to the first shaft part outer circle andThe outer circle of second shaft part is protected, thus the upper surface of part to be plated, lower end surface, axis hole, the outer circle of the first shaft part and secondThe outer circle of shaft part is protected, and realizes that inner hole is elongated and the plating requirement of complicated part, and be less prone to and accidentally plate, partElectroplating quality is high.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the inventionIt applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the tin plating schematic diagram of part；
Fig. 2 is part schematic cross-sectional view to be plated；
Section view when Fig. 3 is the outer circle parcel plating part dress clip tool clamping part to be plated of the preferred embodiment of the present inventionStructural schematic diagram.
Marginal data
10, part to be plated；101, upper surface；102, lower end surface；103, axis hole；104, mounting hole；11, the first shaft part；12,Second shaft part；13, side is installed；20, clamp body；21, pull rod；22, upper end cover；220, lower apical margin；23, lower cover；230, upper topEdge；24, the first locking nut；25, first seal；26, second seal；27, conductive hook；40, cylinder part is protected.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claimsImplement with the multitude of different ways of covering.
Referring to Fig. 2 and Fig. 3, the preferred embodiment of the present invention provides a kind of outer circle parcel plating part dress clip tool,Part 10 to be plated is in hollow shaft tubular, the upper surface 101 of part 10 to be plated, lower end surface 102, axis hole 103, the first shaft part 11 it is outerBe both needed to be protected in round and the second shaft part 12 outer circle electroplating process, dress clip tool include: for clamping part 10 to be plated withSo that part 10 to be plated is hung on the clamp body 20 in electroplating pool vertically, clamp body 20 be connected with power supply and by conductive material prepare withSame electric conductor is formed with part 10 to be plated.Clamp body 20 is used to distinguish the both ends of contact part 10 to be plated, to part to be plated10 upper surface 101 and lower end surface 102 are protected respectively, and prevent the electroplate liquid in electroplating pool by the both ends of part 10 to be platedInto in the axis hole 103 of part 10 to be plated.Dress clip tool further includes protection cylinder part 40, and protection cylinder part 40 is for being set in be plated zeroIt is carried out on the first shaft part 11 and the second shaft part 12 of part 10 with the outer circle of outer circle and the second shaft part 12 respectively to the first shaft part 11Protection.
Outer circle local tin plating part of the invention dress clip tool, including the clamp body 20 for clamping part 10 to be plated,Clamp body 20 is connected with power supply and is prepared by conductive material to form same electric conductor with part 10 to be plated, becomes yin when platingPole, it is ensured that electroplated layer is in 10 surface normal sedimentation of part to be plated, to guarantee that the electricity at position need to be electroplated in 10 outer surface of part to be platedQuality of coating；Clamp body 20 is used to distinguish the both ends of contact part 10 to be plated again, with the upper surface 101 to part 10 to be plated underEnd face 102 is protected respectively, and prevents the electroplate liquid in electroplating pool from entering part 10 to be plated by the both ends of part 10 to be platedIn axis hole 103, and filling clip tool further includes protection cylinder part 40, and protection cylinder part 40 is used to be set in the first shaft part of part 10 to be plated11 and second are protected with the outer circle of outer circle and the second shaft part 12 respectively to the first shaft part 11 on shaft part 12, thus to be plated zeroThe upper surface 101 of part 10, lower end surface 102, axis hole 103, the outer circle of the first shaft part 11 and the second shaft part 12 outer circle protected,It realizes that inner hole is elongated and the plating requirement of complicated part, and is less prone to and accidentally plates, part electroplating quality is high.
Optionally, as shown in figure 3, clamp body 20 includes the upper end cover 22 and lower cover 23 being oppositely arranged.Upper end cover 22 is usedIn the upper end of contact part 10 to be plated to protect upper surface 101, and seal the upper end of part 10 to be plated.Lower cover 23 is usedIn the lower end of contact part 10 to be plated to protect lower end surface 102, and seal the lower end of part 10 to be plated.
The first embodiment of this optinal plan, as shown in Figures 2 and 3, clamp body 20 further include for by 22 He of upper end coverThe pull rod 21 of the axially opposed tension of lower cover 23.Pull rod 21 is arranged in the axis hole 103 of part 10 to be plated and both ends are stretched respectivelyPart 10 to be plated out.Upper end cover 22 is installed in pull rod 21 and stretches out in the upper body of rod of 10 upper end of part to be plated, and with upper body of rod screw threadConnection.Lower cover 23 is installed in pull rod 21 and stretches out in the lower body of rod of 10 lower end of part to be plated, and is threadedly coupled with lower body of rod.Pass throughIt is arranged in the effect of the pull rod 21 in the axis hole 103 of part 10 to be plated, it can be by upper end cover 22 and the axially opposed drawing of lower cover 23Tightly, and then upper end cover 22 is made to hold out against the upper end of part 10 to be plated, lower cover 23 holds out against the lower end of part 10 to be plated, it is ensured that be plated zeroWhile part 10 axis hole, 103 seal protection effect, the electric conductivity of part 10 to be plated is also ensured that, need electroplated layer in part 10 to be platedPlate surface normal sedimentation.Further, due to being machined with mounting hole 104 on the installation side 13 of 10 upper end of part to be plated, and pacifyDress hole 104 needs to protect in the plating process, so clamp body 20 further includes for being seated in mounting hole 104 to mounting holeThe 104 protection plug-in units protected.
The second embodiment of this optinal plan, it is not shown, different from the first embodiment, clamp body 20 further includes connectionSealing element, connection sealing element are used to be arranged in mounting hole 104 and upper end cover 22 on the installation side 13 of 10 upper end of part to be plated,To protect mounting hole 104 and part 10 to be plated made to be connected with upper end cover 22.Mounting hole 104 is threaded hole, so connection sealing elementFor connection bolt or attachment screw.The protection to mounting hole 104 is not only realized by connecting sealing element, while making part 10 to be platedIt is connected with upper end cover 22, and then realizes that clamp body 20 and part 10 to be plated form same electric conductor.Lower cover 23 is with elasticityRubber blocking, rubber block for being filled in axis hole 103 by the lower end of part 10 to be plated, with the lower end surface to part 10 to be plated102 are protected and are sealed the lower end of part 10 to be plated.
In the first embodiment of this optinal plan, as shown in figure 3, clamp body 20 further includes the upper body of rod for being installed in pull rod 21The first locking nut 24 that is upper and being threadedly coupled with upper body of rod.The lower end of pull rod 21 is not pierced by lower cover 23, the first locking nut24 for locking the upper end cover 22 after being tensed by pull rod 21 is opposite and lower cover 23 relatively.Alternatively, the lower end of pull rod 21 is pierced byLower cover 23, and pull rod 21 is pierced by the body of rod after lower cover 23 and is installed with the second locking nut being threadedly coupled with it, secondLocking nut is used to cooperate with the first locking nut 24, by 23 phase of upper end cover 22 and lower cover after being tensed by pull rod 21 is oppositeTo locking.
In the first embodiment of this optinal plan, as shown in figure 3, the lower end surface 102 of upper end cover 22 is recessed annularLower apical margin 220, the upper surface 101 of lower 220 contact of apical margin part 10 to be plated.The upper surface 101 of lower cover 23 is recessed annularUpper apical margin 230, upper apical margin 230 supports the lower end surface 102 of part 10 to be plated.
In the first embodiment of this optinal plan, as shown in figure 3, clamp body 20 further includes for sealing part to be plated respectivelyThe first seal 25 and second seal 26 at 10 both ends.First seal 25 is installed in the cavity of upper end cover 22, to be used forIt is caught in the upper end that part 10 to be plated is sealed in the axis hole 103 of part 10 to be plated downwards by the upper end of part 10 to be plated.Second is closeSealing 26 is installed in the cavity of lower cover 23, with the axis hole for being caught in part 10 to be plated upwards by the lower end of part 10 to be platedThe lower end of part 10 to be plated is sealed in 103.Specifically, first seal 25 and second seal 26 are to have certain elasticityRubber stopper.First seal 25 and second seal 26 are used to further be sealed the axis hole 103 of part 10 to be plated, withAnti- electroplate liquid is entered the axis hole 103 of part 10 to be plated by the both ends of part 10 to be plated, and then improves the plating matter of part 10 to be platedAmount is prevented and is accidentally plated.
Optionally, as shown in figure 3, clamp body 20 further include with the detachable conductive hook 27 being connected of upper end cover 22, leadCable address hook 27 is for hooking on the conductive rod above electroplating pool so that clamp body 20 hangs on conductive rod, conductive hook 27 verticallyAlso it is connected with power supply.Specifically, as shown in figure 3, conductive hook 27 includes the link being connected with the cathode of power supply, and with link phaseConductive hook even, conductive hook are used to catch on the conductive rod above electroplating pool.In the first embodiment, the lower end of conductive hook and pull rod21 are threadedly coupled.In a second embodiment, the lower end of conductive hook is fixedly connected with upper end cover 22.
In the first embodiment and second embodiment of this optinal plan, upper end cover 22 is conductive steelwork or copperPart, it is ensured that the satisfactory electrical conductivity of part 10 to be plated in the plating process, to guarantee that position need to be electroplated in 10 outer surface of part to be platedElectroplating quality, while also have clamp body 20 and being able to bear the rigidity of 10 weight of part to be plated, hang dress reliable.This is optionalIn the first embodiment and second embodiment of scheme, 20 structure of clamp body is simple, operation is simple, convenient disassembly, service efficiency are high.
First specific embodiment of the invention, as shown in figure 3, protection cylinder part 40 includes being prepared and being used by elastic materialIn the protection cylinder being tightly placed in 12 outer circle of the first shaft part 11 and the second shaft part respectively.Protection cylinder is used for the lower end by part 10 to be platedAfter being inserted in part 10 to be plated, then it is tightly placed in the outer circle of the first shaft part 11 or the second shaft part 12 that are correspondingly arranged.In the present invention, byIn part 10 to be plated be the conical part being gradually increased by its lower end to the upper end outer diameter, and in outer circle the shaft shoulder outer diameter it is small, thereforeAnd protecting cylinder part 40 includes integrally formed protection cylinder, and protection cylinder is prepared by elastic material, so protection cylinder can be by be plated zeroAfter part 10 to be plated is inserted in the lower end of part 10, then passes through deformation and be tightly placed in the first shaft part 11 or the second shaft part 12 being correspondingly arrangedIn outer circle.Specifically, protection cylinder is the cannulated sleeve of rubber material.
Second specific embodiment of the invention, not shown, protection cylinder part 40 includes for distinguishing banding in the first shaft part 11With the protection cylinder in 12 outer circle of the second shaft part.Protection cylinder include along the first half of the setting of axisymmetrical subdivision and the second half,And by the first half and the second half tight locking straps of ring.Compared to the first specific embodiment of the invention, of the inventionIn two specific embodiments, protection cylinder includes being convenient for protection cylinder along the first half of the setting of axisymmetrical subdivision and the second halfIt is installed in the outer circle of the first shaft part 11 and the second shaft part 12；Protection cylinder further includes by the first half and the second half tight locks of ringProtection cylinder is opened by locking strap or locked to lock ring, keeps protection cylinder installation, disassembling section simple, and then improves dress clipThe service efficiency of tool.Preferably, the face of both the first half and the second half contacts is equipped with sealing strip, for sealing between the twoGap, enter in protection cylinder to prevent electroplate liquid.
Further, locking strap is the clip being prepared by metal material.Preferably, the outer circle of protection cylinder is equipped with interiorRecessed and mounting groove in a ring, clip are clamped in mounting groove, prevent clip from deviating from protection cylinder, and then it is anti-to improve protection cylinder part 40The safety of shield.Alternatively, locking strap is the elastic garter spring being prepared by elastic material.Specifically, locking strap is by rubber materialExpect that the rubber ring being prepared can banding protection cylinder by the deformation of rubber ring.
The third embodiment of the present invention, protection cylinder part 40 are exhausted in 12 outer circle of the first shaft part 11 and the second shaft part by being wrapped inEdge adhesive tape constitute, insulating tape using when it is easy to operate, be easy in the outer circle for being wrapped in the first shaft part 11 and the second shaft part 12.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this fieldFor art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repairChange, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.