CN110886005B - Anode assembly for cylinder body outside-tank electroplating - Google Patents
Anode assembly for cylinder body outside-tank electroplating Download PDFInfo
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- CN110886005B CN110886005B CN201911245288.8A CN201911245288A CN110886005B CN 110886005 B CN110886005 B CN 110886005B CN 201911245288 A CN201911245288 A CN 201911245288A CN 110886005 B CN110886005 B CN 110886005B
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/10—Electrodes, e.g. composition, counter electrode
- C25D17/12—Shape or form
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/08—Electroplating with moving electrolyte e.g. jet electroplating
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/04—Tubes; Rings; Hollow bodies
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Abstract
The invention discloses an anode assembly for cylinder body bath electroplating, which comprises an anode and a flow guide piece, wherein the flow guide piece is arranged on the anode; the flow guide piece is used for introducing the electroplating solution into the electroplating environment, and the electroplating solution flows into the center of the anode from the top end of the anode and flows back; the flow guide piece is provided with a plurality of flow distribution holes for passing the electroplating solution, and the flow distribution holes are distributed on a flow interface of the electroplating solution; the structure that the flow distribution holes are formed in the circulation interface of the electroplating solution is adopted, so that larger impact is avoided being formed under the driving of the pump, a stable electroplating environment can be provided in the dynamic electroplating process, the dynamic electroplating device still has the advantages of dynamic electroplating, cations on the coating are guaranteed to be replaced in real time, undifferentiated concentration and stable and uniform fluidity are formed, the compactness of the coating is well guaranteed, and the electroplating quality is guaranteed.
Description
Technical Field
The invention relates to a component of a cylinder electroplating device, in particular to an anode assembly for cylinder bath electroplating.
Background
The cylinder body is used as a main part of equipment such as an engine, a plunger pump, a reciprocating compressor and the like and is used for forming a working space together with the piston and the cylinder head; taking an engine as an example, the engine forms a combustion chamber and provides a motion track for the piston assembly, so that a power conversion environment is formed. In the process of guiding the piston to continuously reciprocate, the inner wall of the cylinder and the piston rub against each other for a long time at a high frequency, so that the useful power of the cylinder is reduced, and a part of energy is consumed. In order to solve the problems, electroplating is carried out on the inner wall, and an electroplating coating is used for replacing the cylinder sleeve to solve the problems. In the prior art, the circulating electroplating outside the tank ensures that cations on a plating layer are replaced in real time due to the formation of a flowing electroplating environment, the concentration of the plating layer is not different, the fluidity of the plating layer is stable and uniform, the compactness of the plating layer is ensured, and the electroplating quality is ensured.
Although the cyclic electroplating (dynamic electroplating) has the advantages, the electroplating environment is necessarily stable, but the flowing electroplating solution needs power to drive the cyclic flowing, which can cause adverse impact on the stable electroplating environment, thus the electroplating process is adversely affected and the final quality of the product is affected.
Therefore, need optimize the improvement to current circulation (developments) electroplating device, can provide stable electroplating environment in the dynamic electroplating process to, still have the advantage of dynamic electroplating, both guaranteed that the positive ion on the cladding material replaces in real time, form indiscriminate concentration and stable even mobility, thereby better assurance the closely knit compactness of cladding material, guarantee electroplating quality.
Disclosure of Invention
In view of the above, the present invention provides an anode assembly for plating outside a cylinder, which can provide a stable plating environment during a dynamic plating process, and still has the advantages of dynamic plating, thereby ensuring real-time replacement of cations on a plating layer, forming an undifferentiated concentration and stable and uniform fluidity, and further better ensuring compactness of the plating layer and plating quality.
The invention discloses an anode assembly for cylinder body outside-tank electroplating, which comprises an anode and a flow guide piece, wherein the flow guide piece is arranged on the anode; the flow guide piece is used for introducing the electroplating solution into the electroplating environment, and the electroplating solution flows into the center of the anode from the top end of the anode and flows back;
the flow guide piece is provided with a plurality of flow distribution holes for passing the electroplating solution, and the flow distribution holes are distributed on a circulation interface of the electroplating solution;
the anode is arranged in an electroplating environment formed around the anode (the electroplating environment refers to an environment for forming electroplating after being electrified, and generally refers to an environment between a workpiece and the anode), and the flow guide piece is used for introducing electroplating solution into the electroplating environment, flowing into the center of the anode from the top end of the anode and refluxing; the electroplating solution is introduced into the electroplating environment through the flow distribution holes, so that the uniform and stable flow of the electroplating solution can be ensured, the effective ions in the electroplating environment are uniformly distributed, and the expected electroplating effect is achieved; of course, other tools need to be matched, even the dynamic electroplating tool in the prior art can be realized, and details are not repeated herein.
Further, the flow guide piece is provided with a flow guide part, the flow guide part is sleeved outside the anode, and the flow distribution holes are arranged in the flow guide part and distributed around the anode;
in the structure, the electroplating solution flows out from the periphery of the anode through the distribution holes, so that the whole structure is stable and uniform, and the structure is simple and compact; the electroplating solution flows upwards through the distributing hole to the electroplating environment during the input, has a stirring effect and is dispersed and uniform.
Furthermore, the diversion part is a T-shaped sleeve sleeved outside the anode, the flange of the T-shaped sleeve is a diversion part, the distribution holes are uniformly distributed on the flange of the T-shaped sleeve, the T-shaped sleeve has a stable installation structure, the diversion part and the anode are concentric, and the liquid outlet direction of the distribution holes is stably controlled.
Furthermore, the upper end of the inner circle of the drainage part is a conical surface with a large upper part and a small lower part, and the outlet of the flow distribution hole is positioned on the conical surface; as shown in the figure, the T-shaped sleeve, namely the upper end of the cylindrical structure, is bent outwards to form an annular flange, the structure is simple and compact, and the T-shaped sleeve is stably and simply installed with the anode in a matching way; the upper end of the inner circle of the drainage part is a conical surface with a large upper part and a small lower part, and the outlet of the flow distribution hole is positioned on the conical surface; the structure that the outlet of the distributing hole is located on the conical surface enables electroplating solution to form downward rotational flow after flowing out of the distributing hole, and the space between the conical surface and the outer circle of the anode has a liquid storage function, so that the electroplating solution flowing out of the distributing hole is prevented from forming local unstable impact on an electroplating environment.
Furthermore, the anode is of an integral structure, the lower part of the anode is of a stepped shaft structure, the small shaft diameter section of the stepped shaft is provided with external threads, the small shaft diameter section of the stepped shaft downwards penetrates through the corresponding mounting hole when the anode is used, the shaft shoulder of the stepped shaft abuts against the edge of the mounting hole, and the locking nut is matched and locked with the external threads of the anode to realize anode mounting;
as shown in the figure, the anode of the invention has an integral structure, is formed in one step, has less manufacturing procedures, low difficulty and low total cost; the integral mounting structure avoids the occurrence of loosening and desoldering faults, the force can be applied safely during replacement, the anode is not damaged, and the time-consuming and labor-consuming repair and maintenance work is saved; the locking nuts are adopted to realize the tight contact and self-locking of the threads, and the tightening force is larger than that of other existing mounting structures; the conductive effect is easier to ensure.
Further, antimony is added into the material (generally lead-tin alloy) of the anode, so that the sufficient hardness and strength of the anode connecting part are ensured.
The invention has the beneficial effects that: the anode assembly for cylinder body out-of-tank electroplating adopts the structure that the flow distribution holes are formed in the flow interface of the electroplating solution, avoids larger impact under the driving of the pump, can provide a stable electroplating environment in the dynamic electroplating process, still has the advantages of dynamic electroplating, ensures that cations on a plating layer are replaced in real time, forms undifferentiated concentration and stable and uniform fluidity, and further better ensures the compactness of the plating layer and the electroplating quality.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a structural cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of the baffle;
FIG. 3 is a cross-sectional view of an application of the present invention;
FIG. 4 is an enlarged view of FIG. 3A;
FIG. 5 is an enlarged view of FIG. 3B;
FIG. 6 is a view of the installation structure of the present invention;
FIG. 7 is a view showing the structure of a pod
FIG. 8 is a perspective view of the electroplating environment forming structure for installation of the present invention (anode removed).
Detailed Description
Fig. 1 is a structural sectional view of the present invention, fig. 2 is a sectional view of a guide, fig. 3 is a structural sectional view of an application of the present invention, fig. 4 is an enlarged view of fig. 3A, fig. 5 is an enlarged view of fig. 3B, fig. 6 is an installation structure view of the present invention, fig. 7 is a structure view of a guide, fig. 8 is a perspective view (with an anode removed) of a plating environment forming structure for installation of the present invention, as shown in the drawings: the anode assembly for cylinder outside-tank electroplating of the embodiment comprises an anode 15 and a flow guide piece 16, wherein the flow guide piece 16 is used for introducing electroplating solution into the electroplating environment, flowing into the center of the anode from the top end of the anode and refluxing;
the flow guide part is provided with a plurality of flow distribution holes 1602 for passing the electroplating solution, and the flow distribution holes are distributed on a circulation interface of the electroplating solution;
in use, the anode 15 is mounted in an electroplating environment forming assembly and an electroplating environment is formed around the anode 15, and the flow guide 16 is used for introducing electroplating solution into the electroplating environment, flowing into the center of the anode 15 from the top end of the anode and refluxing;
the electroplating environment forming assembly refers to an environment capable of forming electroplating outside the cylinder body tank, namely a common dynamic electroplating environment, and is not described herein again;
introduce the electroplating environment through distributing hole 1602 with the plating solution, can guarantee the even stable flow of plating solution for effective ion distribution in the electroplating environment is even, thereby reaches the electroplating effect of expectation.
The present invention is described below in terms of its installation and use in a dynamic electroplating environment; as shown in the figure, in this embodiment, the electroplating environment forming assembly includes a flow guide mounting component 11, where the flow guide mounting component 11 includes a flow guide mounting cover 1102 and a supporting plate 1101 mounted on the flow guide mounting cover, and the supporting plate 1101 is provided with a supporting plate channel for mounting the flow guide mounting cover 1102 and is isolated from the electroplating environment by the flow guide mounting cover 1102;
the flow guide mounting cover 1102 is provided with a flow guide central channel, the anode is mounted at the bottom of the flow guide mounting cover and upwards penetrates through the flow guide central channel, the flow guide piece is provided with a flow guide part, the flow guide part is sleeved outside the anode, the flow distribution holes are formed in the flow guide part and distributed around the anode, and the outer side edge of the flow guide part is attached to the side wall of the flow guide mounting cover; the lower part of the flow guide cover positioned at the drainage part is provided with an electroplating liquid inflow port; as shown in the figure, the bottom of the diversion installation cover is provided with an anode installation hole, the anode is of an integral structure, the lower part of the diversion installation cover is of a stepped shaft structure, the small shaft diameter section is provided with external threads and downwards penetrates through the anode installation hole 1105, the shaft shoulder of the stepped shaft is abutted against the edge of the anode installation hole, and the locking nut 17 is matched and locked with the external threads of the anode 15 to realize anode installation;
as shown in the figure, the anode of the invention has an integral structure, is formed in one step, has less manufacturing procedures, low difficulty and low total cost; the integral mounting structure avoids the occurrence of loosening and desoldering faults, the force can be applied safely during replacement, the anode is not damaged, and the time-consuming and labor-consuming repair and maintenance work is saved; the locking nuts are adopted to realize the tight contact and self-locking of the threads, and the tightening force is larger than that of other existing mounting structures; the conductive effect is easier to ensure (in order to ensure that the screw thread has enough hardness and strength, a small amount of antimony is added in the anode alloy).
In the structure, the electroplating solution flows out from the periphery of the anode through the distribution holes, so that the whole structure is stable and uniform, and the structure is simple and compact; the plating solution inlet is generally provided with a plating solution connector which is communicated with a plating solution pump and supplies the plating solution, and the plating solution flows upwards into the plating environment through the distributing hole during the input, has a stirring effect, and is dispersed and uniform.
In this embodiment, the flow guide member is a T-shaped sleeve sleeved on the anode, a flange 1601 of the T-shaped sleeve is a flow guide portion, and the distribution holes are uniformly distributed on the flange 1601 of the T-shaped sleeve; as shown in the figure, the T-shaped sleeve, namely the upper end of the cylindrical structure, is bent outwards to form an annular flange, the structure is simple and compact, and the T-shaped sleeve is stably and simply installed with the anode in a matching way; the upper end of the inner circle of the drainage part is a conical surface with a large upper part and a small lower part, and the outlet of the flow distribution hole is positioned on the conical surface; the structure that the outlet of the distributing hole is located on the conical surface enables electroplating solution to form downward rotational flow after flowing out of the distributing hole, and the space between the conical surface and the outer circle of the anode has a liquid storage function, so that the electroplating solution flowing out of the distributing hole is prevented from forming local unstable impact on an electroplating environment.
In this embodiment, the electroplating environment forming assembly further includes a mounting frame assembly and a mounting auxiliary assembly, wherein the mounting frame assembly includes a fixing frame and a pressing assembly; the mounting rack assembly comprises a fixing rack and a pressing assembly 1;
the fixed frame comprises a bottom plate 2 and a frame fixed on the bottom plate;
the installation auxiliary assembly is used for installing a workpiece, is installed on the bottom plate after being compensated in height and diameter and is pressed by the pressing assembly 1, and is also used for introducing electroplating solution into the cylinder body and passing through the anode;
the bottom plate is arranged on the flow guide installation component 11, and the flow guide installation component is used for installing an anode and guiding electroplating solution to a workpiece to form an electroplating environment;
when the tool is used, the mounting frame assembly and the mounting auxiliary assembly on which the workpiece is mounted form a whole, the whole is transferred to each station of electroplating, when the mounting frame reaches the electroplating station, the mounting frame is directly placed on the flow guide mounting assembly (mounted on the corresponding electroplating station), the overall height is adjusted by the mounting auxiliary assembly matched with the workpiece to be matched with the anode, and different workpieces 9 do not need to be replaced, so that a production line does not need to be stopped, different workpieces are replaced and directly mounted on the tool and mounted on the electroplating device, the matched mounting auxiliary assembly can also form transition between the workpiece and the electroplating device, the mounting difference between different inner diameters of different workpieces and a bottom plate is compensated, and the universality on the height and the diameter is formed;
the installation auxiliary assembly can adopt a cylindrical structure, is matched with the workpiece 9 in height, so that the total height is matched with the height of the anode, and the inner diameter of the cylindrical structure is variable, so that the installation auxiliary assembly is suitable for transitional installation between the bottom plate and the workpiece and is not repeated herein; of course, the structure of the installation auxiliary assembly is not necessarily cylindrical, and can be any shape for achieving the above purpose, and the description is omitted;
the pressing component is arranged on the fixing frame and is used for pressing the workpiece and the installation auxiliary component, so that the stability of the workpiece during transportation and electroplating is ensured, and the electric quality and the electroplating process are ensured to be smoothly carried out;
the tool adopts an integral module, the whole body is sent to the flow guide installation assembly, a unique and simple electroplating environment is formed, the installation and the positioning are convenient, the automatic electroplating outside the tank is favorably realized, and the working efficiency is greatly improved; the overall height is adjusted to be matched with the anode through the installation auxiliary assembly matched with the workpiece, the anode does not need to be replaced for different workpieces, so that the production line does not need to be stopped, different workpieces are replaced and directly installed on the tool and placed in the electroplating device, and the matched installation auxiliary assembly can also compensate installation differences between different inner diameters and bottom plates of different workpieces, so that the universality on the height and the diameter is formed; therefore, the invention has universality for electroplating outside the cylinder body and is suitable for workpieces with various sizes, thereby realizing seamless switching of products, avoiding the capacity loss caused by wire stop, rapidly meeting the delivery requirement, minimizing the switching time of mature products and minimizing the capacity loss.
In this embodiment, the installation auxiliary assembly includes a variable diameter compensation part 3, the variable diameter compensation part 3 is a cylinder with an axial through hole and can be installed on the bottom plate in a positioning manner and insulate the bottom plate from the electroplating environment, and the axial through hole is communicated with the inner hole of the workpiece for leading in electroplating solution through the anode; the lower ends of the different reducing compensation parts 3 have the same external dimension, the upper ends have the internal diameter dimension which is matched with the internal diameter of the corresponding workpiece, the total height of the reducing compensation parts after the workpieces are installed can be matched with an anode to finish electroplating, and when the reducing compensation parts are used, the workpieces are axially pressed on the reducing compensation parts by the pressing assembly;
workpieces (air cylinders) with different heights and diameters are provided with variable-diameter compensation pieces 3 with different heights, so that the total height of the workpieces arranged in the invention is not changed, and the workpieces can be matched with the height of an anode; as shown in the figure, the fixed diameter size of the lower ends of different reducing compensation pieces (different reducing compensation pieces matched with different workpieces) can be matched with a standard tool, the upper ends of the different reducing compensation pieces correspond to the inner diameters of the corresponding workpieces (the same diameter is concentric), the lower ends of the different reducing compensation pieces are used for being matched with a bottom plate channel 201 penetrating through a bottom plate (the bottom plate is isolated from an electroplating environment), the upper portions of the different reducing compensation pieces are matched with the workpieces (the matching sizes of the different workpieces are different), and the total height of the reducing compensation pieces after the workpieces are installed enables the total height to be matched with the height of an anode to complete electroplating when; the reducing compensation part 3 is made of glass fiber reinforced plastic (certainly, other non-conductive materials with certain strength can be adopted, and the description is omitted), so that the reducing compensation part has an insulation effect and improves the electroplating efficiency.
The diversion installation cover 1102 is used for installing an anode and introducing electroplating solution into an electroplating environment (the electroplating environment refers to an environment forming electroplating after electrification, and generally refers to an environment between a workpiece and the anode), the bottom plate 2 is attached to the upper surface of the supporting plate 1101 and is installed on the supporting plate, and a channel for introducing the electroplating solution of the diversion installation cover is communicated with the reducing compensation part; as shown in the figure, a diversion installation cover installation position for installing a diversion installation cover is arranged on the supporting plate 1101 (as shown in the figure, an annular flange formed by bending and bending the upper end of the diversion installation cover outwards is arranged at the edge of the supporting plate channel, a step sinking groove is formed on the edge to enable the annular flange to be leveled after the annular flange is arranged at the edge), the diversion installation cover is arranged at the diversion installation cover installation position, the upper end of the diversion installation cover is hermetically abutted with the lower end of the reducing compensation part (namely the diversion installation cover penetrates through the supporting plate channel to enable the supporting plate not to contact with an electroplating environment), the bottom plate is attached to the upper surface of the supporting plate, and the diversion installation cover is; by adopting a relatively modularized mounting structure and a mode of attaching and mounting the supporting plate 1101 and the bottom plate 2, the whole structure is simple, the mounting and positioning are convenient, the automatic electroplating outside the tank is favorably realized, and the working efficiency is greatly improved; the flow guide mounting cover is made of glass fiber reinforced plastic (other non-conductive materials with certain strength can be adopted, and the description is omitted), has an insulation effect, ensures the electroplating quality, and is provided with functional holes, such as an anode mounting hole for mounting an anode, a drainage member mounting hole for introducing electroplating solution, and the like, which are not described again; as shown in the figure, a sealing ring (gasket) 104 is arranged between the upper end of the flow guide mounting cover and the lower end of the reducing compensation part 3 to form radial sealing, prevent the electroplating solution from leaking along the radial direction and insulate with the outside.
In this embodiment, the installation auxiliary assembly further comprises a shielding member, the shielding member comprises an upper shielding ring 7 and a lower shielding ring 10 which are made of a non-metal conductive material, the lower shielding ring 10 is coaxially embedded into the axial through hole of the reducing compensation member 3 and axially abuts against the lower end of the workpiece 9 in the same diameter, and the upper shielding ring 7 abuts against the upper end of the workpiece 9 in the same diameter and is axially compressed by the compression assembly 1; the reducing compensation part is made of non-conductive materials, so that a stable electroplating working condition is formed on a conductive part, and the waste of materials and the interference to the electroplating working condition are avoided; the same-diameter mutual abutting means that the inner diameter of the upper shielding ring 7 and the inner diameter of the lower shielding ring 10 are the same as and coaxial with the inner diameter of the workpiece 9, edge burrs generated in the electroplating process are led to the upper edge of the upper shielding ring and the lower edge of the lower shielding ring in the electroplating process so as to ensure the electroplating quality, and the upper shielding ring 7 and the lower shielding ring 10 are made of conductive materials, so that the description is omitted; of course, radial seals are required to be formed between the upper shielding ring 7 and the lower shielding ring 10 and the workpiece 9 (cylinder) to prevent the electroplating solution from leaking; the lower end face (contacted and abutted with the upper end face of the cylinder body) of the upper shielding ring 7 and the upper end face (contacted and abutted with the lower end face of the cylinder body) of the lower shielding ring 10 are respectively provided with a sealing ring 12 and a sealing ring 13 (an annular sealing ring groove can be arranged on the corresponding end face and is used for placing the sealing ring), the sealing ring is generally made of acid and alkali resistant fluororubber, and the purposes of sealing and contact abutment can be realized through external force compression deformation; the lower end of the inner circle of the upper shielding ring forms an annular chamfer, the upper end of the inner circle of the lower shielding ring forms an annular chamfer, and the chamfer structure can guide burrs to grow towards a sudden change position, so that the interference on electroplating of the cylinder body is avoided, and meanwhile, the structure is favorable for ensuring that the interference on the flow of electroplating solution is not generated; the upper shielding ring and the lower shielding ring are made of non-metal conductive materials (such as conductive rubber or plastics), when in actual use, the inner plating layer can be separated from the upper shielding ring and the lower shielding ring by using a small external force (because the binding force between the non-metal conductive materials and a metal plating layer is generally small), for example, the plating layer can be directly peeled off by using a sharp tool, or the upper shielding ring and the lower shielding ring can be deformed by using a small external force (such as hand holding) to peel off the plating layer, the non-metal conductive materials with the set elastic modulus can be deformed by using the non-metal conductive materials with the set elastic modulus, but can bear the pressing force of a workpiece during electroplating to ensure the smooth operation of the electroplating process, so that the plating layer and burrs of the inner circle of the shielding ring can be separated from the inner circle of the shielding ring, the shielding ring can be used for the second time, and, the consumption and the electroplating cost are reduced; and metallic shield ring (generally for aluminium) cladding material and burr and shielding ring combine closely, can't drop, adopt chemistry to remove the mode of cladding material and handle, need provide and remove the plating place to the shielding ring removes to plate many times the back can influence the later stage and use and scrap, and the cladding material also can't be retrieved and along with the waste liquid discharges, causes very big waste.
In the embodiment, the upper shielding ring and the lower shielding ring are both made of POM (polyoxymethylene) material and carbon powder, the addition proportion is less than or equal to 1% by mass, and about 0.4% is preferred, so that the conductive coating has good physical properties and chemical properties, good conductivity, easy shedding of the coating, long-term use without replacement and electroplating cost saving.
Because the plating layer can be stripped by a simple physical method, a deplating process is not needed, the shielding ring is hardly lost, the service life is long, the shielding ring can be continuously used for half a year to one year, and the low consumption cost for manufacturing the shielding ring every month can be reduced by over 75 percent; nitric acid is not used for stripping the shielding ring, the requirement of environmental protection is met, the stripping cost of the used nitric acid can be reduced by over 60 percent, the stripping time does not need to be waited, the nitric acid can be quickly put into the next round for use, and the nitric acid can be used for daily standby by 20 percent; no wastewater treatment pressure and corresponding cost are required; the stripped nickel layer can be recycled, thereby saving the field and reducing the cost.
In this embodiment, the installation auxiliary assembly further includes a positioning sleeve 8, the positioning sleeve 8 is provided with a positioning pin 801 which is matched with an installation threaded hole on the workpiece 9, and is positioned by the positioning pin 801 so that the positioning sleeve is concentric with the workpiece, and the upper shielding ring 7 is concentrically arranged in the positioning sleeve 8 and is concentrically matched with the workpiece 9 in the same diameter by the positioning sleeve 8;
the mounting threaded hole on the workpiece 9 refers to a threaded hole on the end face of the workpiece, the positioning sleeve aims to ensure that the positioning sleeve 8 is concentric with the workpiece by utilizing the matching between the positioning pin and the mounting threaded hole (the positioning pin is inserted into the threaded hole to form positioning), and the upper shielding ring 7 is mounted on the inner circle of the positioning sleeve so as to form coaxial matching with the workpiece in the same diameter; the locating pin generally is two at least, and this embodiment is two that the symmetry set up promptly, guarantees positioning accuracy.
The specific installation process is as follows: the reducing compensation part 3 is positioned and placed on a bottom plate 2 (a usable sealing ring, the sealing ring can be made of EVA foam cotton), the lower shielding ring 10 is placed on the reducing compensation part 3, a seal (the sealing mode is not limited) can be arranged between the lower end and the reducing compensation part 3, the sealing ring is placed on the upper end face of the lower shielding ring 10, a workpiece is placed on the lower shielding ring, the upper shielding ring is placed after the positioning is carried out through a positioning sleeve, a movable module can be formed by pressing through a pressing device, the module is directly conveyed to a flow guide mounting assembly and placed on a supporting plate after the positioning is carried out through positioning protrusions, and other external forces are utilized to compress the module.
In this embodiment, the lower end of the outer circle of the variable diameter compensation part 3 forms a stepped shaft structure, the small-diameter shaft section penetrates through the bottom plate channel 201, and a radial seal is formed between the end surface and the upper end surface of the flow guide installation cover;
the supporting plate 1101 is provided with at least two positioning protrusions 1103 which protrude upwards, so that high-precision positioning is achieved, the bottom plate 2 is provided with the positioning holes 202 which are used for being matched with the positioning protrusions 1103, and coaxiality of anode installation of the flow guide installation cover, a bottom plate channel, the reducing compensation part and a workpiece can be guaranteed after positioning installation, so that a good electroplating effect is guaranteed.
In the embodiment, the frame is provided with a fixed upper longitudinal beam 6, the pressing component 1 is arranged on the upper longitudinal beam 6, and a pressing part 5 which can be driven to reciprocate up and down is arranged for pressing or releasing a workpiece 9; the structure can adopt any existing mechanical structure, including manual or electric, and can be realized by adopting the existing mechanical structure, which is not described again; as shown in the figure, the frame includes four upright posts 4 detachably fixed on the bottom plate 2 (by bolts), two upright posts 4 are respectively disposed on two longitudinal sides (according to the arrangement direction of the plurality of workpieces), an upper cross beam is fixedly connected between the upper portions of the two upright posts 4 (by bolts), and the upper longitudinal beam 6 is fixedly connected between the two upper cross beams to form a stable structure of the fixed connection, which is not described herein again.
In this embodiment, the pressing assembly 1 includes a pressing rod 101 capable of being driven to reciprocate up and down along the upper longitudinal beam 6 and a lever assembly for driving the pressing rod 101 to reciprocate, and the pressing portion 5 is located at the lower end of the pressing rod 101; the lever assembly comprises a driving lever (comprising a power arm 1021 and a resistance arm 1022) and a rocker arm, wherein the resistance end (namely the end part of the resistance arm) of the lever is rotatably hinged at the upper end of the pressing rod 101, the lower end of the rocker arm can rotate in a single degree of freedom relative to the upper longitudinal beam, and the upper end of the rocker arm is coaxially hinged with the fulcrum of the driving lever in a single degree of freedom rotation; a limiting block 104 is arranged on the rocker arm, and the limiting block 104 limits the lever to continue rotating towards the pressing direction when the lever is driven to drive the pressing rod 101 to press the workpiece;
the reciprocating motion of the pressing rod 101 is generally single degree of freedom, that is, only reciprocating motion is performed, the pressing part 5 can be integrally formed with the pressing rod 101 or can be detachably arranged in a split manner, in the embodiment, the pressing part with a plate-shaped structure is adopted, and the pressing part is generally movably connected with the end part of the pressing rod with a certain degree of freedom, such as a movable head like a ball hinge, so that the pressing end face can be adapted to, and the coaxiality of workpieces can be ensured;
the upper end of the rocker arm is hinged with the fulcrum of the driving lever through the fulcrum hinged shaft 14, the driving lever rotates around the fulcrum under the action of external force to enable the resistance arm 1022 to approach to be vertical from the transverse direction, so that the pressing rod 101 is driven to press a workpiece downwards, the rocker arm swings forwards around the hinged point at the lower end of the rocker arm under the transverse (no displacement) constraint of the pressing rod 101, when the resistance arm 1022 presses the workpiece, the fulcrum axis is at least intersected with the fulcrum hinged axis (the axis of the hinged shaft 14) or exceeds the hinged axis backwards, so that self-locking is formed, the lever is prevented from rotating under the reaction force, meanwhile, the limiting block limits the lever to rotate continuously in the pressing direction, so that the pressing rod is prevented from rotating continuously to drive the pressing rod to move upwards, and pressing self-locking is formed (namely, the mechanical structure formed by the pressing rod and the driving lever is similar to, thereby forming a self-lock).
In this embodiment, the pressing assembly 1 further includes a base, the base is fixed to the upper longitudinal beam 6, the pressing rod 101 is disposed on the base in a manner of single-degree-of-freedom up-and-down reciprocating motion, the two rocker arms are respectively arranged on two sides of the base (the rocker arm 1031 and the rocker arm 1032), the lower ends of the two rocker arms are coaxially hinged to the base, and the upper ends of the two rocker arms are respectively coaxially hinged to two sides of a fulcrum of the driving lever (i.e., the two rocker arms rotate coaxially with the; when the pressing rod 101 presses a workpiece through the pressing part, the axis of the pressing rod is intersected with or exceeds the axis of the fulcrum backwards, and at the moment, the limiting block supports against the resistance arm of the driving lever from the back side;
as shown in the figure, the base is fixed on the surface of the upper longitudinal beam 6 through a detachable structure, and a through hole for the compression rod to pass through is formed in the upper longitudinal beam 6; the base comprises a base plate 105 and a guide sleeve 107, the guide sleeve is provided with a guide slideway, the guide slideway is vertically arranged right opposite to the through hole on the upper longitudinal beam, and the pressing rod penetrates through the guide slideway and is matched with the guide slideway in a way of reciprocating up and down; the base plate 105 is detachably connected with the upper longitudinal beam 6 through a connecting hole (a bolt passes through, and a waist-shaped hole is generally adopted), so that the base plate has strong adaptability; the guide sleeve 107 is fixed on the base plate 105 through threaded connection, and the structure is simple; as shown in the figure, the lower end of the guide sleeve 107 is provided with external threads, and is screwed on the internal threads on the base plate 105 in a manner that the axis (the direction of the guide slideway) is vertical to the base plate 105 to form connection, and in order to avoid falling off, the connection is also locked by a locking nut 106; the pressing rod passes through the guide sleeve 107 along the vertical direction and is matched with the guide sleeve in a reciprocating motion (generally, the pressing rod has a single degree of freedom); the lower ends of the rocker arms 1031 and 1032 are symmetrically hinged to two sides of the guide sleeve 107 respectively, the structure is simple and practical, the whole locking assembly forms a module, and the hinged part is installed on the base plate after being completely processed;
the backward direction in the present invention refers to the direction (the direction indicated by the arrow in fig. 4) in which the power arm 1022 swings when the driving lever presses the workpiece, and the back side is the side corresponding to the backward direction, which is not described herein again.
Due to the action of the stopper 14, the resistance wall 1022 of the lever is prevented from further rotating, the rocker arm 1031 and the rocker arm 1031 cannot further rotate under the action of the stopper, that is, an interlock is formed, and the axis of the compression rod intersects with or goes back beyond the axis of the fulcrum (generally, the axes intersect), that is, a stable retraction mechanism is formed, and the release is avoided.
In this embodiment, the base is detachably and fixedly connected to the upper longitudinal beam 6, the driving lever is a right-angle structure taking a fulcrum as a boundary, the resistance arm 1022 forms a fork-shaped groove, the compression bar 101 is located in the fork-shaped groove and is hinged to the end of the resistance arm, the fork-shaped structure is beneficial to stable connection and does not apply a biasing force, so that the structure is stable and the service life is long; as shown in the figure, the driving lever is a right-angle structure (i.e. the power arm 1021 and the resistance arm 1022 are right-angled) using the fulcrum as a boundary, i.e. at the fulcrum, the power arm is bent forwards, so that the operation is convenient and the interference with the rocker arm (the limiting block) is avoided.
In this embodiment, the workpiece 9 is in tight contact with the upper shield ring 7 and the lower shield ring 10 to form a radial seal, which means that a seal ring is disposed on an end surface to prevent liquid from leaking in a radial direction.
In this embodiment, the reducing compensation part 3 is installed on the bottom plate 2 in a positioning manner and is coaxial with the bottom plate channel 201, a step for placing the lower shielding ring 10 is arranged on the inner circle, and the inner diameter of the step is larger than that of the lower shielding ring 10, so that the stable flow of the electroplating solution is ensured; the upper shielding ring 7 is coaxially arranged on the inner circle of the positioning sleeve 8, and the pressing component 1 presses the workpiece 9 through the upper shielding ring 7; the reducing compensation part 3 can be arranged on the bottom plate 2 in a positioning manner, and can adopt various mechanical structures, for example, an annular sinking groove is formed on a bottom plate channel 201 (the shape is the same as the radial overall dimension of the reducing compensation part, the reducing compensation part is arranged in the annular sinking groove to form transverse positioning, namely, a coaxial effect is achieved, or the reducing compensation part shown in the figure can be matched with the bottom plate channel through a shaft shoulder (stepped shaft) structure, namely, a small-diameter part penetrates through the bottom plate channel, and a shaft shoulder of a large-diameter part is pressed on the edge of the bottom plate channel to form positioning;
the part directly contacted with the workpiece (cylinder body) is generally sealed by an acid and alkali resistant fluororubber sealing ring, such as the sealing between the upper and lower shielding rings and the workpiece, so that the sealing is ensured, and meanwhile, the close contact between the shielding rings and the workpiece cylinder body can be ensured to successfully transfer burrs; the sealing which is not in direct contact with the workpiece adopts EVA foam (such as between a lower shielding ring and a reducing compensation part) so as to reduce the clamping action of an operator for placing/taking out the rubber ring and improve the clamping efficiency; as shown in the figure, the bottom plate is provided with a positioning hole for positioning the bottom plate on the electroplating device, after a workpiece is installed on the device, the tool is moved to the electroplating device and is matched with the positioning protrusion 1103 on the supporting plate 1101 through the positioning hole space 202, so that the installation position is matched with an electroplating solution flow channel of the device, and the normal operation of electroplating is ensured.
The plating outside the bath of the present invention refers to dynamic plating by circulating plating liquid outside the plating bath, and will not be described herein.
In this embodiment, an engine cylinder is taken as an example, and actually, the technical solution claimed in the present invention is not limited to the engine cylinder, but may be a compressor cylinder, a plunger pump cylinder, and other cylinders having similar structures, which are not described herein again.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (4)
1. The utility model provides an anode assembly for cylinder body extra-tank electroplates which characterized in that: comprises an anode and a flow guide element; the flow guide piece is used for introducing the electroplating solution into the electroplating environment, and the electroplating solution flows into the center of the anode from the top end of the anode and flows back;
the flow guide piece is provided with a plurality of flow distribution holes for passing the electroplating solution, and the flow distribution holes are distributed on a circulation interface of the electroplating solution; the flow guide piece is provided with a flow guide part, the flow guide part is sleeved outside the anode, and the flow distribution holes are arranged in the flow guide part and distributed around the anode; the flow guide part is a T-shaped sleeve sleeved on the anode, the flange of the T-shaped sleeve is a flow guide part, and the flow distribution holes are uniformly distributed in the flange of the T-shaped sleeve.
2. An anode assembly for cylinder off-tank plating according to claim 1, wherein: the upper end of the inner circle of the drainage part is a conical surface with a large upper part and a small lower part, and the outlet of the flow distribution hole is positioned on the conical surface.
3. An anode assembly for cylinder off-tank plating according to claim 1, wherein: the anode is of an integral structure, the lower portion of the anode is of a stepped shaft structure, the small shaft diameter section of the stepped shaft is provided with external threads, the small shaft diameter section of the stepped shaft penetrates through the corresponding mounting hole downwards during use, the shaft shoulder of the stepped shaft abuts against the edge of the mounting hole, and the locking nut is matched with the external threads of the anode to lock the anode.
4. An anode assembly for cylinder off-tank plating according to claim 3, wherein: antimony is added into the material of the anode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911245288.8A CN110886005B (en) | 2019-12-06 | 2019-12-06 | Anode assembly for cylinder body outside-tank electroplating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911245288.8A CN110886005B (en) | 2019-12-06 | 2019-12-06 | Anode assembly for cylinder body outside-tank electroplating |
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| CN110886005B true CN110886005B (en) | 2021-04-16 |
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| CN201911245288.8A Active CN110886005B (en) | 2019-12-06 | 2019-12-06 | Anode assembly for cylinder body outside-tank electroplating |
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| CN111962120A (en) * | 2020-08-18 | 2020-11-20 | 重庆佰鸿机械设备有限公司 | Pipe fitting inner wall surface treatment process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4608299B2 (en) * | 2004-12-13 | 2011-01-12 | 株式会社アストム | Ion exchange membrane / electrode assembly |
| CN203602738U (en) * | 2013-10-16 | 2014-05-21 | 瑞安市锐波汽缸制造有限公司 | Electroplating device for inner surface of cylinder |
| CN104562117A (en) * | 2013-10-16 | 2015-04-29 | 瑞安市锐波汽缸制造有限公司 | Electroplating device for inner surface of cylinder |
| CN204690140U (en) * | 2015-04-15 | 2015-10-07 | 中科瑞阳膜技术（北京）有限公司 | A kind of tubular anode cover |
| CN105734633B (en) * | 2016-02-29 | 2018-04-20 | 隆鑫通用动力股份有限公司 | The anode assembly foreign-plated for engine cylinder body groove |
| CN107022787B (en) * | 2017-03-08 | 2019-06-14 | 郑州煤矿机械集团股份有限公司 | The tooling and application method that hydraulic cylinder surfaces externally and internally is electroplated simultaneously |
| CN107620097B (en) * | 2017-11-03 | 2020-03-31 | 中航飞机起落架有限责任公司 | Inner hole electroplating device |
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