SU1420071A1 - Apparatus for removing collapsible former - Google Patents

Description

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The invention relates to the manufacture of galvanic; parts manufacturing,: in particular, chemical destruction and removal of mandrels for which galvanic metal is deposited, and can be used in | - fabricating waveguides. ; The aim of the invention is to increase productivity.

FIG. 1 shows a device for removing a breakable mandrel; in: FIG. 2 - end of a tube with a crown of i two teeth.

I In the device, a galvanically manufactured part V (Fig. 1) with an aluminum I mandrel 2 is installed in the holder 3 of the bath 4, which is connected to I by tank 6. Electrolyte from the tank 5 It is supplied under pressure from pump 7 to the tubes 8 of the I and 9 electrolyte supply to the part 1 with the I mandrel-2. The tubes 8 and 9 from the side I of the entrance to the mandrel 2 have bevels 10 to ensure free flow of electrolyte into the part 1. The tubes 8 and; .9 are connected with the rods 11 and 12 with the help of i by means of the axes of rotation 13 and 14, and between i with themselves the rods 11 and 12 are jointly hinged; Dinin axis 15 to move libel-: speaking each other by a spring 16, fastened; in holes 17 and 18.

The device for removing the breakable mandrel operates as follows.

When the electrolyte is supplied by means of a pump 7 from the tank 5 through the openings of the tubes 8 and 9, the mandrel 2 is destroyed. It becomes more intense the more intensively the electrolyte is supplied.

As the mandrel 2 is destroyed, the tubes -8 and 9 move towards each other in part 1 when fresh electrolyte is supplied directly to the ends of the mandrel 2.

llfl.n exclude the procurement of holes in the tubes 8 and 9, their ends; 10 are made with bevels or in the form of crowns with two or more teeth 19 (FIG. 2).

The spent electrolyte is removed through pipe 6 from bath 4 to tank 5 by gravity.

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In the implementation of the proposed device, a 20% alkali solution, for example, NaOH, is used in the removal of aluminum trim. At the same time, the rate of dissolution of the mandrel is increased by 5-7 times compared with the destruction of the mandrel when it is simply immersed in a bath with alkali. This is especially true when the shafts of small cross section, for example, a waveguide with a length of 2x4 mm, having a length of about 400-600 mm,

When using the proposed device, the productivity increases by 5-7 rae when the mandrel is destroyed and the technological equipment, the occupied production areas, the number of service personnel are reduced.

Claims (1)

1. A device for removing a destructible mandrel containing an electrolyte tank, a bath with a part holder and a removable mandrel, and an electrolyte supply system in the degrading zone, characterized by the fact that the electrolyte supply system is made of two hinges rods with tubes, fixed on the axes of rotation of the rods with the possibility of longitudinal movement, connected and interconnected in the middle part, while the bevels are made in the working sections of the tubes, 2, The device according to claim 1, characterized in that the ends of the tubes are made in the form of two pivotally connected and interconnected in the middle part of the spring rods with tubes fixed on the rotation of the rods with the possibility of longitudinal movement, in the working areas tube execution} end bevels. i 3, Device pop, 1, characterized in that the ends of the tubes are made in the form of crowns with two teeth or more. / s .rrrrrr 9 .rrrrrrr rr. FIG. 2