DE1012502B - Method and device for the galvanic treatment of mass parts, e.g. B. needles - Google Patents

Description

GERMAN

The object of the invention is a method and an apparatus for the galvanic treatment of mass parts, eg. B. needles, in a fully automatic way using magnetic mounts. For electroplating mass-produced parts, methods are already known in which sieves are used, but which are ^{clogged with prolonged use as a result of 1 of} the Materialauf application. The state of the art also includes drums or bells that take up the parts to be machined on the one hand and are designed on the other hand so that magnetic coils with iron cores protruding into the vessel are attached below the bottom, which take off the flow of grinding springs that simultaneously control serve to interrupt the current, the magnets can also be attached to the circumference of the receptacles, the position of which can be changed by known devices in the direction of the longitudinal axis.

It is also known that iron or steel parts are suspended in an electroplating bath by means of a magnet will. If pointed, bulky or needle-like objects are to be processed in this way, so often burns occurs at the ends or tips of these objects as a result of the accumulation of the streamlines on, which usually leads to the flaking of the precipitate. For electroplating the named parts magnets with parallel legs are also used, between which the parts to be machined, specially designed needles, straightened and held in place. By changing the direction of the current, the Change contact points.

The methods mentioned have the disadvantage that a continuous process cannot be achieved; especially not if the goods to be electroplated are to pass through several baths.

According to the invention, these disadvantages are eliminated by a method and an apparatus, the The essence is that the parts to be treated are fed to the electrolyte several times. Here changes the support member and thus the contact point.

To carry out the method, a device is equipped with electromagnetic holding devices disc-shaped support member used which is designed so that, for. B. all operations, such as Polishing, rinsing, neutralizing, drying, demagnetizing, etc., in one continuous cycle and can be carried out without manual activity. A row is used to transport the goods Electromagnets that can be switched on and off individually or in groups and which are parallel to the support member on the Rotation axis are arranged and through which the current for the electroplating is fed at the same time. the Working conditions of the devices, such as

Method and device

for galvanic treatment

of mass parts, e.g. B. needles

Applicant:
VEB headquarters

Development
for iron and sheet metal goods

Karl Marx City,
Karl-Marx-Stadt, Lessingstr. 3

Rudolf Nitzsche, Gößnitz (Sa.),
has been named as the inventor

Voltage, amperage, distance between anode and cathode, etc. can be regulated individually.

The transfer of the goods from one work step to the other takes place directly from a supporting element to the other or with the interposition of a deflection pulley through electromagnetic interaction.

The supporting elements can also be located in several containers standing one behind the other, see above that the transport takes place over the partition of two containers and the goods from the last support member of the a container passes over to the first support member of the following container. This is where the interaction takes place

^K ~ ⁱ in such a way that the partial electromagnets of a rotating support member are switched off at the moment when they have approached the following rotating support member at a short distance. The current-supplying magnetic cores are arranged parallel to the axis of rotation of the respective support members. The disc-shaped support elements with magnets arranged parallel to the axis of rotation are offset from one another in such a way that the side surfaces of the adjacent disk-shaped support elements overlap and approach each other so far that the magnetically held objects pass from one support element to the other through magnetic interaction.

If the galvanic current is lost or switched off, the device can also be used for pure immersion and transportation purposes.

As is well known, the support element is protected against corrosion and other harmful influences by plastics,

709 588/240

Glass or other insulating materials so protected that only the contact points with the: electrolyte in contact come. For special purposes, the magnetic cores can be provided with holes to support the support member with liquid or gaseous agents that z. B. through the axis · can be supplied to clean.

In the drawings, the device according to the invention is shown schematically on the basis of an exemplary embodiment shown. It shows ίο

Fig. I the device in front view and top view,

Fig. II the clamping device in section and Fig. III the device with a continuous process several work processes in the cut.

The parts are fed from a magazine 1 via a transport shaft 2 to which they are uniform moving support member 3. Electromagnets 7 serve as holding devices.

After the first immersion process, the parts are taken over magnetically by the next support element and again led through the bathroom. Take the parts the path shown in dash-dotted lines in Fig. I and III.

The mode of action of the electromagnets can depend on the desired duration of the work processes can be set.

The main body 4 of the support member (Fig. II) is rotatably mounted on the axis 5. It’s up to him Plate 6 attached, which carries the electromagnets 7. The front cover is provided by the cover plate 17. The components are largely protected against corrosion by suitable materials.

The contact for the electrochemical process takes place via the contact strips 15. The electromagnets can be switched on or off individually or in groups by the collector 10 with the brush 18 and the brush 9 attached thereto, so that they are effective within a certain angle . The brush 9 rests on the slip ring 11. The power supply to the workpieces 12 for the electrochemical process is controlled by the collector 13 and the brush 19 lying against it. Through the bores 16 of the magnetic cores 8, it is possible to clean the electromagnets by suitable means or to rinse the material, etc. The feed is through the axis 5. The brushes for controlling the switching operations are adjustable so that any angle α and β can be adjusted. The electrochemical process can be shortened or lengthened by changing the angle β.

Claims (7)

Patent claims: 1. Process for the galvanic treatment of mass-produced parts, ζ. B. needles, on fully automatic Paths using magnetic support, by means of which at the same time the required current is supplied for electroplating, characterized in that the objects by means of rotating support members arranged one behind the other and provided with a series of electromagnets in the manner through the bath or baths be performed that the objects held magnetically on the surface of the support member be passed to the next support member by electromagnetic interaction. 2. The method according to claim 1, characterized in that the interaction in the manner takes place that the partial electromagnets of a rotating support member in each case at the moment be switched off when they have approached the adjoining rotating support member at a short distance. 3. The method according to claim 1 and 2, characterized in that when using several Baths the transfer of objects from one bath to the other through a bath located above the edge of the bath rotating support member by electromagnetic interaction takes place. 4. Apparatus for performing the method according to claim 1 to 3, characterized by two or more support members arranged one behind the other, parallel-axis, rotating in the same direction (3) A number of individually or in groups that can be switched on and off over the entire surface the support member distributed electromagnets (7) included. 5. Apparatus according to claim 4, characterized ge ^ indicates that the individual support members are arranged in several contiguous containers are and above the partition of two abutting containers an equal or oppositely rotating support member is that coming from the last support member Receives objects and supplies them to the first support element of the next container. 6. Apparatus according to claim 4 and 5, characterized in that the current-supplying magnetic cores (8) are arranged parallel (Fig. II) to the axis of rotation of the respective support members. 7. Apparatus according to claim 4 to 6, characterized in that when parallel to the axis of rotation of the Electromagnets arranged in the support element, the disk-shaped support elements are offset in relation to one another are arranged that the side surfaces of the adjacent disc-shaped support members overlap and are approached so far that the magnetically held objects can pass through magnetic interaction from one to the other supporting member. Considered publications: German Patent Specifications No. 520 334, 478 363, 551 564, 845 733; "Galvanotechnik" (formerly Pf anhauser), 1949, p. 208. 1 sheet of drawings © 709 588/240 7.57