RU2715584C1 - Apparatus for electrolytic coatings by rubbing on inner cylindrical surfaces - Google Patents

Abstract

FIELD: electroplating.

SUBSTANCE: invention relates to electroplating and can be used in application of metal layer to obtain required geometric shape, hardening or anticorrosive treatment of cylindrical surfaces in parts. Device comprises a housing, a threaded shaft, a thrust bearing, a control slide, a fixing nut, tight anodes with tampons, wherein it comprises scissors made in the form of driving and driven webs, hingedly fixed in its central part and converging in closely spaced parallel planes with a pressure sensor installed in the hinged mechanism, wherein outer ends of drive webs and outer ends of driven webs are fixed in skids of housing and are made with possibility of free stroke in vertical direction, note here that inner ends of driven webs are secured on thrust bearing housing while inner ends of drive webs are articulated with adjusting slide.

EFFECT: improved quality and efficiency of coating formation, increased intensification of process, reliability and efficiency of device operation due to application of "scissors" mechanism and pressure sensors.

1 cl, 2 dwg

Description

The invention relates to electroplated coatings and can be used in the process of applying a metal layer to obtain the necessary geometric shape, hardening or anti-corrosion treatment of cylindrical surfaces in detail.

A device for electrolytic coating by rubbing, comprising a housing, sectors that are articulated and resiliently connected with the housing. Sectors with fixed anode plates and a fixed swab have the ability to move radially. The tampon is made in the form of an endless tape and mounted on the anode plates with the help of a fixing rod installed behind the sectors and connected with the housing by elastic elements (patent RU No. 2186158, IPC C25D 5/06, published: 07.27.2002 bull. No. 21).

The disadvantage of this device is the small size range of the workpieces, the uneven pressure of the anode plates coated with a swab on different parts of the surface of the workpiece, leading to different conditions of the galvanic process, which reduces the quality of the coating.

Based on the totality of these essential features, the prototype of the claimed technical solution adopted device for electrolytic coating by rubbing, containing a shaft and a copier located on it, which has the ability to move along the axis, fixed anode plates on sectors covered with a swab. There is also a pneumatic chamber for controlling the location of the anodes with tampons relative to the cylindrical holes in the process of applying the metal layer (patent RU No. 2198965, IPC C25D 5/06, published: 02.20.2003 Bulletin No. 5).

The disadvantages of this device are the need to supply compressed air to the pneumatic chamber, the difficulty of regulating the constantly the same pressure of the anode with tampons on the surface of the part during electrolytic coating by rubbing, accompanied by the inevitable abrasion of tampons and depletion of the anodes.

The present invention is aimed at eliminating the disadvantages and problems in the known devices described above for coating on inner cylindrical surfaces by electrolytic rubbing.

A technical problem is the creation of a device for electrolytic coating by rubbing on internal cylindrical surfaces with a high productivity of coating formation.

The technical result is: increasing the productivity of the formation of the coating due to the constant automatic control and regulation of the pressure of the anode with tampons on the surface of the workpiece. Maintaining stable conditions for electrolysis, eliminating dendritic formation, increasing the reliability and efficiency of the device, maximally simplified and simple device technology, increasing the maximum adhesion strength is also achieved.

The technical result is achieved by the fact that, in the proposed device for electrolytic coating by rubbing on inner cylindrical surfaces, comprising a housing, a threaded shaft, a thrust bearing, a fixing nut, an adjusting slider, tightly fitting anode plates with chemically resistant tampons, the new is that it equipped with a “scissors” mechanism, which are pivotally fixed in the central part of the driving and driven web converging in closely spaced parallel planes with pressure sensor in the hinged mechanism. The outer ends of the driving canvases and the outer ends of the driven canvases are fixed in the skids of the housing and have free movement in the vertical direction. The inner ends of the driven canvases are pivotally mounted on the thrust bearing housing, the inner ends of the driven canvases are pivotally mounted on an adjusting slide.

The inventive device is illustrated in the figures:

FIG. 1 - shows a General view of the proposed device;

FIG. 2 is a top view of section AA in FIG. 1

The inventive device consists of the following elements:

1 - adjusting slider, 2 - fixing nut, 3 - driven blade, 4 - case, 5 - anode, 6 - tampon made of chemically resistant material, 7 - threaded shaft, 8 - thrust bearing, 9 - pressure sensor, 10 - lead web, 11 - scissors mechanism.

Chemically resistant swab 6 and anode 5 are tightly fixed to the housing 4, in which there are runners, the outer ends of the leading 10 and the driven web 3 of the “scissors” 11 mechanism, which are pivotally mounted in the central part of the host 10 and the driven web 3 with by the articulated mechanism by pressure sensor 9. Leading 10 and driven webs 3 converge in closely parallel planes, the outer ends of the driving webs 10 and the outer ends of the driven 3 webs are fixed in the skids of the housing and have free movement in the vertical In addition, in addition, the inner ends of the driven blades 3 are fixed on the thrust bearing housing 8, and the inner ends of the driven blades 10 are pivotally mounted on the adjusting slider 1. Depending on the direction of rotation of the threaded shaft 7, the adjusting slider 1 moves up or down relative to the thrust bearing 8 . On the threaded shaft 7 is a fixing nut 2, which also moves along the thread to fix the adjusting slide before coating.

A more highly efficient process of applying a metal layer to the surface is due to the fact that pressure sensors are located on the device, which record the pressure force of the anode with a tampon on the surface of the restored part and transmit information to the electronic control unit.

The device operates as follows. The coating process on the surface of the restored part is carried out by a low-carbon anode tightly fixed plate 5 and a chemically resistant swab 6, which is pressed against the inner cylindrical surface of the part using the threaded shaft 7, the adjusting slide 1 and the “scissors” mechanism 11. When the threaded shaft 7 rotates, or counterclockwise, the adjusting slider 1 moves up or down. Moving the adjusting slider activates the “scissors” mechanism 11, as a result of which the bodies 4 move with the anodes 5 and tampons 6 fixed to them, to the side or from the surface of the part being restored. In the central part of the leading 10 and the driven web 3, a pressure sensor 9 is installed in the hinge mechanism, which detects the pressure of the anode, covered with chemically resistant tampons on the surface of the workpiece and transmits a signal to the electronic control unit. In the electronic control unit, the reference signal laid down in it and the signal from the pressure sensor 9 are compared. If the anode 5 covered with tampon 6 is pressed unnecessarily or not tight enough to the surface being restored, an audible alarm will sound, based on which the necessary adjustments will be made by rotating the threaded shaft 7 and fixing in the desired position of the adjusting slide 1 with a fixing nut 2.

Thus, the present invention ensures the maintenance of stable, identical electrolysis conditions in all areas of the restored surface, which helps to increase the productivity of the process, to obtain uniform, high-quality coatings, to increase the reliability and efficiency of the device due to the constant automatic control and regulation of the pressure of the anode with tampons on the surface to be treated details using a “scissors” type mechanism and pressure sensors.

Claims (1)

Device for electrolytic coating by rubbing on inner cylindrical surfaces, comprising a housing, a threaded shaft, a thrust bearing, a fixing nut, an adjusting slide, tightly fitting anodes with tampons, characterized in that it contains scissors made in the form of a leading and a driven canvas, articulated fixed in its central part and converging in closely spaced parallel planes with a pressure sensor installed in the hinge mechanism, the outer ends of the leading webs and External Expansion ends slave webs are secured in cantilever body and configured to freewheel in the vertical direction, the inner ends of the webs secured to the driven body of the thrust bearing, and the inner leading ends of the webs are hinged to the control slider.

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