SU1139589A1 - Device for tinning axial leads of radio elements - Google Patents

Abstract

1. A DEVICE FOR TREATING AXIAL OUTPUTS OF RADIO ELEMENTS, containing a driven drive station, transporting means, fluxing baths and a tinning bathtub, equipped with nozzles with outlet openings, the longitudinal axes of which are symmetrically relative to the axis of the transporting means, characterized in that, in order to improve the quality tinning — by removing the influx of solder at the end of the outlet; the outlet openings of the nozzles are made in the form of means and made with a variable distance between them, increasing in the direction of movement conveying means. 2. The device according to claim 1, characterized in that, in order to expand the technological possibilities, the baths of the tinning are made turning. 3. The device according to paragraphs. 1 and 2, characterized in that the transporting means is made in the form of two discs with grooves installed with the possibility of reciprocal movement along an axis fixed to the station. oo with cd SH); o T / 7 / W //////////// 7/1 FIG. one

Description

The invention relates to soldering and can be used in the preparation of radio components for installation, for example, for automatic fluxing and tinning of their findings.

A device for continuous tinning of radio element leads is known, comprising flux and solder baths equipped with lids with longitudinal grooves, guided in the form of a strip with a channel in communication with the bath of tin, the upper part of which leads to the terminals of radio elements 1.

The disadvantage of this device is the mandatory U-shaped molding before the tinning, which limits the applicability of the device. In addition, the device is unacceptable for U-shaped forming with a zigom, since solder flows occur at the places of the ridge, which will impede the installation of radio elements into the holes of the printed circuit board.

A device for tinning the terminals of radio elements is known, comprising a motorized bed, conveying means, fluxing baths and a tinning bath, provided with nozzles with outlet openings whose longitudinal axes are located symmetrically with respect to the axis of the conveying means 2.

The disadvantage of the device is that the influx of solder is obtained in the middle of the output and after trimming this influx remains at the output and makes it difficult to mount the radio elements into the holes of the printed circuit board.

The purpose of the invention is to improve the quality of the tinning by removing the influx of solder at the end of the output.

The goal is achieved by the fact that, in a device comprising a motorized bed, transporting means, fluxing baths and a tinning bathtub, equipped with nozzles with outlet openings, whose longitudinal axes are located symmetrically relative to the axis of the transporting means, the outlet openings of the nozzles are in the form of slits, the longitudinal axes which are inclined to the axis of the transporting means and are made with a variable distance between them, increasing in the direction of movement of the transporting means.

Tub baths are made turning.

The transporting means is made in the form of two disks with grooves installed with the possibility of mutual movement along the axis fixed on the frame.

FIG. Figure 1 shows the kinematic diagram of the drive of the conveyor; in fig. 2 - transporting rotor, front view; in fig. 3 shows a section in FIG. 2;

in fig. 4 is a diagram of the rotation and movement of a bath of tinning relative to the serviced radio element; in fig. 5 - the scheme of a tinning of conclusions of radio elements.

The device contains a drive in the form of an electric motor 1, a belt drive 2 and a gearbox 3, discs 4 and 5 of the transporting means installed on the axis b with multidirectional threads, vibrating hopper 7, tray 8, drive 9, flux bath 10 with brushes 11 mounted on axis 12 with the possibility of longitudinal movement, baths 13 tinning, equipped with nozzles 14 with longitudinal slots 15 and having pivot axes 16 and guides 17 longitudinal movements, and a frame 18.

The device works as follows.

From the vibrating hopper 7, through the tray 8 and the hopper 9, radioelements arrive at the transporting means (4, 5), receiving continuous rotation from the electric motor 1 through the belt transmission 2 and the gearbox 3. On the transporting equipment of the radioelements, the fluxing, tinning and unloading operations into the container are successively carried out. The passage through the fluxing position, the leads of the radio elements touch the outer surface of the brushes 11, turning them and removing from the bath 10 a new batch of flux to process the subsequent leads.

The passage through the baths of 13 tinning, the terminals of the radio elements fall under the jet of molten solder flowing from the nozzles 14 through the longitudinal slots 15, and are serviced.

When the radioelement leaves the molten solder stream, at the extreme points of the cut-out zone of the output, sags are formed. The length of the tinning is established by turning the baths 13 around the axes 16, the place of the tinning is by longitudinal movement along the guides 17 and is adjusted so that the influx of solder is withdrawn into the cut-off area during the molding, thereby eliminating the waste. The shortest length of the tinning is obtained at zero angle a and increases with its increase.

When the device is changed from one size of the radio element to another, the disks 4 and 5 of the transporting medium are displaced due to different non-directional threads, the flux bath 10 along the axis 12 and the tin bath along the guides 17 simultaneously move along the axes 16.

The proposed device can significantly improve the quality of tinning products by removing the influx at the end of the output.

- .Vf

Choy

Claims (3)

1. DEVICE FOR TINKING AXIAL OUTPUTS OF RADIO ELEMENTS, containing a bed with a drive, trans-, porting means, fluxing baths and tinning baths equipped with nozzles with outlet openings, the longitudinal axes of which are located symmetrically relative to the axis of the conveying means, characterized in that, for the purpose of improving the quality of tinning - by removing the influx of solder to the end of the output, the nozzle exit holes are made in the form of a tool and are made with a variable distance between them, increasing in the direction of movement nsportiruyuschego means. 2. The device according to π. 1, characterized in that, in order to expand technological capabilities, tin baths are made rotary. 3. The device according to paragraphs. 1 and 2, characterized in that the conveying means is made in the form of two disks with grooves mounted with the possibility of mutual movement along the axis fixed to the bed. FIG. 1