DE1184021B - Process and device for the production of three-part leadthroughs for press plates of electron tubes - Google Patents

Description

Method and device for the production of three-part implementation ladders for press plates of electron tubes The invention relates to a method and a device for the production of three-part lead-through ladders for press plates of electron tubes on a machine, in which the feeding of the various Wires to the disconnectors from two opposite sides takes place and in which the cut pin-shaped after severing the wires Wire ends inevitably in current-carrying claws that can be moved in a preselected rhythm arrive, which are supplied with current surges in a predetermined order, in such a way, that the three parts are welded together one after the other.

For press plates for radio and television tubes and other components HF technology uses three-part bushing conductors made from a nickel pin, a fin wire and a thinner nickel wire. The nickel wire is used as a socket pin and is inserted into the tube socket. With this pen. are two different versions common. The first run is at the end of the pen is rolled into a curve, the end of the second runs in a truncated cone the end.

The second version is more advantageous for insertion into the tube socket, because this prevents the spring from being compressed.

In the manufacturing processes that have been customary up to now, the forums are made with the Rolled-on rounding is preferred, as this is more advantageous for loading magazines is. Curves are rolled onto both ends of the pen. The welding together the three parts took place in automats, their magazines with the three individual parts be charged, d. that is, the three different wires cut separately and the curves of the contact pin must be rolled.

There are also machines for automatic welding of lead-through wires known for electric incandescent lamps and similar vacuum vessels, in which those of both sides by feeding devices z. B. postponed and then piece by piece cut wires are temporarily grasped by mechanically switched grippers and with their ends for welding together directly or with an interposed one third piece of wire made of a different material are pressed against each other. at such and other known machines, e.g. B. such for manufacturing of to be used in electric light bulbs, composed of four individual parts. Power supply wires that extend from a lamp body to the base tube Electrode wire piece, a piece of sealing wire to be melted in the pinch of the foot tube and a base line wire piece that establishes the connection with the base, only one bushing conductor is produced automatically at a time, without one mechanical deformation of the leadthrough conductor during the manufacturing process takes place.

In contrast, a method for the production of three-part leadthrough conductors for pressing plates of electron tubes, which is described in more detail in the first paragraph, is characterized according to the invention; that two lead-through conductors are produced in one operation by the fact that a middle piece of wire, which later forms the contact pins, has two further sections on the same axis in each of its two end faces . the machine are arranged, first: the double length of a finished contact pin is given, that then the middle piece of wire is heated by the passage of current and is separated into two halves by simultaneous mechanical pulling; and that two three-part pins are then produced at the same time in the same working cycle in a known manner: With this new production method, the complete lead-through conductor is produced on a single machine. The manufacturing process is broken down into seven operations, indicated in the enumeration of the individual figures, which are carried out in parallel by the machine for two implementation conductors.

The tip at the end of the contact pin, which later sanded off is obtained within the manufacturing process, so that a pre-production unnecessary.

Another advantage of the invention is that the implementation sl0ter towards the known with a technically much cheaper one End of the contact pin are made and that the separate mutual The curvature of the rounding comes off.

Further arrangements, details, modifications and advantages of the Invention are below on the basis of an exemplary embodiment reproducing Drawing explained, namely shows F i g. 1 is used to cut the wires Automatic machine in a schematic representation with a cutting device arranged in it with the wire wound on spools, rolls or the like and the associated magazines, where the contact pin is twice the length of the final version (1st step), F i g. 2 five cut wires in horizontally one behind the other, electrically well-managed kowtowing couples; Annealing of the contact pin of double length (2nd step), F i g. 3 the separation of the contact pin in two halves by controlling the gripping devices, whereby a point is created at one end of each contact pin (3rd step), F i g. 4 the welding together of the contact pins created by the separation with the finch wires (4th operation), Fi g. 5 welding the finch wires together with the long nickel wires, creating two complete bushing conductors (5th operation), F i g. 6 the flat grinding of the tips of the contact pins (6. Operation), F i g. 7 ejection of the finished pair of bushing conductors (7th operation), F i g. 8 and 9 the finished leadthrough ladder on an enlarged scale.

In a machine five spools, rolls or the like 1 to 5 are arranged, which are equipped with three different types of wire. Here are coil 1 with a Nickel wire from z. B. 1 mm thickness, the coils 2 and 4 with a z. B. 0.4 mm thick Finkhdraht and the coils 3 and 5 with a nickel wire of, for example, 0.5 mm Strength wrapped.

The nickel wire 6 is moved from the coil 1 to the stop 11 to the center and cut to size by the cutting device 16; At the same time, the wires 7, 8, 9 and 10 of the coils 2, 3, 4 and 5 are led to the center up to the stops 12, 13, 14 and 15, which have been adjusted to measure, and separated from the associated cutting devices 17, 18, 19 and 20 .

The nickel wire 6 runs up to the stop 11, the Finkh wire pins 7/9 with a diameter of 0.4 mm and the 0.5 mm thick nickel wire pins 8/10 run to the middle. The five wire pin ends cut off at the same time fall into the associated magazine containers 26, 27, 28, 29 and 30 and into claws arranged symmetrically below for further processing.

The nickel wire pin 21 (FIG. 2) is held by two claws 35, 36 embraces its ends. The claw stands from the claw pair 35, 36 formed in this way 35 pulling to the right and the claw 36 pulling to the left. The pairs of claws are good electrical conductivity. The control of the manic processes can, for. B. electronically or mechanically, for example by cam control.

A pre-calculated current flows from the claw 35 via the nickel wire 21 to the claw 36. The nickel wire 21 is made to glow by the electric current (cf. half of the nickel wire 21 is pressed against the claw 31 and touches the fink wire 22, which is 0.4 mm thick in the exemplary embodiment.

Another current surge from claw 31 via claw 35 causes the wire pin ends 21 and 22 to weld. The same happens at the same time on the other side: here the current surge runs via claw 33 to claw 36 and welds the wire pin ends 24 and 21 (Fig . 4, 1I).

After exposure to the current surges, the claws 31 and 35 settle on one side to the claw 32, on the other side the claws 33 and 36 to the claw 34 (Fig. 5). A third surge from claw 32 to 31 connects wire pin ends 22 and 23; at the same time flows in on the other side Stream from claw 34 to claw 33 and weld the wire pin ends 24 and 25 (F i g. 5; 11i).

Two flat grinding disks are attached to the tips of the wire pin ends 21, 21 37 and 38, whereby the wire pin ends are slightly ground (Fig. 6).

When the claws 31, 32, 33, 34, 35 and 36 are opened, two now fall complete power supply lines in two magazines arranged under the claws that consist of Plastic, glass or the like. Are made and made so that suitable electronic and optically automatic control means for each individual pin in terms of its length tolerance, Check in the weld as well as the size of the weld knot and faulty Eject pins.

After the test or control, power supplies are electronic counted to a predetermined number of pieces and in prepared plastic: od. Like. Cans packed automatically.

Above all, the invention increases the production speed because all processes inevitably interlock.

Claims (1)

Claims: 1. Process for the production of three-part lead-through conductors for pressing plates of electron tubes on a machine in which the various wires are fed to the cutting devices from two opposite sides and in which the cut pin-shaped wire ends inevitably after the cutting of the wires get into current-carrying claws which can be moved in the preselected rhythm and to which current impulses are supplied in a predetermined order, in such a way; that the three parts are welded to one another one after the other, characterized in that two lead-through conductors are produced in one operation in that a middle piece of wire, later forming the contact pins, on the two end faces of which two further sections are arranged coaxially in the machine, initially the double length of a finished contact pin is obtained, d then the middle piece of wire is heated by current passage and is separated into two halves by simultaneous mechanical pulling action, and that then two three-part pins are produced simultaneously in the same working cycle in a known manner. 2. The method according to claim 1, characterized in that the finished leadthrough conductors inevitably get into a container, where they electronically or optically checked for length tolerance, also the size of the respective weld node, etc., counted to a predetermined number and then in prepared cans , in particular made of plastic, are automatically packaged. 3. Device for practicing the method according to claim 1 and 2, characterized in that at least partially different wires (6 to 10) of wire rolls (1 to 5) can be unwound and moved up to stops (11 to 15), which apart from cutting devices ( 16 to 19) located below the same, cut wire ends (21 to 25) receiving containers (26 to 30) are assigned, and that below the container (26) there are electrically conductive claws (35, 36) which are under opposing pulling action, which through an electronic or mechanical control, for example by cam control, can be actuated. 4. Device according to claim 3, characterized in that each of the claws (35, 36) has further claws (31, 32; 33, 34) controllable by current surges for welding the wire ends (21 and 22, 24 and 21; 22 and 23) , 24 and 25) are assigned. Considered publications: German Patent Specifications Nos. 432 879, 562 602, 650176, 678 083; U.S. Patent No. 2,696,227.