SU1224116A1 - Device for tin-plating leads of radio components - Google Patents

Description

The invention relates to soldering and can be used in the manufacture of fixed non-wire resistors.

The aim of the invention is to increase the guaranteed lifetime of the pas.

Figo 1 and 2 shows the device - FOR the tinned terminal of the radio elements; FIG. 3 .- section A.A. FIG. 2,

In the niche of the heat insulating frame 1, baths 2 and an insulated furnace 3 are installed. In the upper part, the bath is equipped with a mechanism 4 for maintaining the level S by a device 5 for controlling the temperature of the solder 5, a transporting mechanism 6, two angled nickel guide 7 for the hydrogen supply, channel 9 with a lid 10 for feeding the stripe bars; the bath itself is a stainless steel vessel for solder, located in the main cavity 11 and in two longitudinal cavities 12, into which it enters through channels 13 and comprising a longitudinal groove 14 arranged in the upper part for accommodating the transporting mechanism 6 with guides 15 for orienting the resistors 16, as well as a system of holes 17. and 18 for supplying hydrogen to the burners 19 externally along the longitudinal cavities 20 s. Nickel guides 7 mounted above them and directed at an angle to HHMs Nickel guides 7 project somewhat above the main plane of the bath and are fixed parallel to the longitudinal cavity 12, the walls of which they form capillary and 20 J for a better wetting of the solder guide plane, the contacting with these slits, and the upper plane containing kanav- ki 21, tinned.

After performing all the technological operations, prior to electrochecking, the resistors 16 are wrapped onto the package, moving by means of the transport mechanism 6 along the bath of the tin.

5 0 5 0 5 0 5

0

oriented axially with the side surfaces of the guides 15 and CBOI1-III leads to the flame zone of the hydrogen burners 19, where they are heated and prepared for tinning by removing oxides in the reducing medium of the hydrogen burners flame, the drip starts to contact the upper surfaces of the nickel guideways 7, in the longitudinal channels 21 of which solder is held, by which the bolsters are serviced. Into the upper groove 21, the solder is fed through the slit 20 due to the capillary effect. For better wettability, the working surfaces of the guiding surfaces 7 are tinned. The burners 19 are located along. the slots 20 and with their torch are directed towards the nickel rails 7 ,. which makes it possible to ensure that the burners of the terminals of the resistors and nickel guides that perform the role of a heel are in the zone of the reducing flame.

When moving along the guides 15, the resistor rotates and slides along the nickel guides, serving in the contact zone. Since the nickel guides are angled to the direction of movement of the resistors, the contact area of the leads with the upper plane of the nickel guides is gradually shifted toward the ends of the leads as the resistors move until they are fully serviced. The solder in the bath 2 from the main working cavity 11 enters the channels in the longitudinal grooves 12, from which through the capillary slots 20 enters the grooves 21 of the nickel guide 7. The level of the solder by the mechanism 4 is maintained by displacing it with an immersed load. The replenishment of the solder in the bath is carried out through the channel 9 with the cover removed 10. The temperature of the trough is controlled by turning off the heaters of the furnace 3. The tube 8 and the system of holes 17 and 18 in the bath 2 are supplied with hydrogen to the burners 19,

20

12241 16

Compiled by E „Tyutchenkova Editor AOGulko Tehred A.Aliev Proofreader E.Roshko

Order 1872/14 Circulation 1001 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Fig.Z

Claims (1)

. DEVICE FOR TINKING RADIO ELEMENTS CONCLUSIONS, containing heated baths with molten solder, nozzles installed in the bathrooms and a transport mechanism located between the nozzles, characterized in that, in order to increase the guaranteed solderability, it is equipped with hydrogen burners mounted parallel to the nozzles, made in the form of located nozzles at an angle to the direction of movement of the transporting mechanism of the Nickel rails, at the working ends of which is made of at least one longitudinal groove, connected capillary gap with a bathtub.