SU1580604A1 - Device for working leads of radio elements - Google Patents

Abstract

This invention relates to devices for processing outputs of discrete radio elements and microcircuits. The purpose of the invention, the expansion of technological capabilities and the improvement of quality, is achieved by the fact that it is provided with a cassette holder 6, a guide bar 9 mounted on a rotatable axis. The bath 4 of the tin is equipped with curtains installed with the possibility of interaction with the bucket 30. 2 Cp. f-ly, 7 ill.

Description

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2

The invention relates to devices for processing outputs of discrete radio elements and microcircuits in order to prepare them for mounting on printed circuit boards and can be used in radio engineering and instrument-making production.

The purpose of the invention is the expansion of technological capabilities and quality improvement.

FIG. 1 shows the proposed device, front view; in fig. 2 - the same, top view; in fig. 3 section A-A in FIG. 2, a bath of a tin in position when the bucket with solder is raised; in fig. k - the same, the bucket is omitted; FIGURE 5 is a section BB in FIG. 2; in fig. 6 - loading cassette with radio elements; in fig. 7 shows a section B-B in FIG. 2

On the base 1, a plate 2 is mounted on top, on which the trimming mechanism 3, the tin bath k, the flux bath 5, the cassette holder 6, the control panel 7, the U-shaped bending mechanism 8, the rotatable guide bar 9 and the zigging mechanism 10 ( Fig. 1 and 2).

The loading cassette 1 (Fig. 6} consists of a lower 12, an upper 13 flap connecting the hinge axes connecting them, a centering tip 15 with a groove and a latch 16. The latter is mounted on a button 17 fixed on the upper flap 13 and preloaded by a spring 18 to one half of the conical lock. The second half of the conical lock is formed at the free end of the lower flap 12. When the article, the folds 12 and 13 are fully closed, these halves are joined into a common cone, which, under the influence of the spring 18, places the latch TB on its conical part.

The chute of the lower flap 12 is filled with radio elements 19 being processed. When the flaps t2 and 13 are closed and secured by the latch 16, the housings of the radio elements 19 are tightly packed inside the loading cassette 11, and their leads are located outside the cassette 11 to the right and left in the horizontal plane. The bottom flap 12 is provided with a longitudinal protrusion with which it slides along the guides, its side walls in cross section are in the form of a ridge, the same shape must be given to the conclusions

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radioelements 19 in the process of forming.

The mechanism 3 trimming conclusions made in the form of a joint scissors with two pairs of parallel knives. The lower knives 20 are fixed left and right on the base, which is mounted on the slab 2. The upper knives 21 are also screwed, left and right, to the lever, which is connected with the base by axis 22. The second end of this lever through the crank 23 and the vertically moving column 24 is connected to a pneumatic actuator (not shown).

The lower, fixed knives 20 are internal, the upper, movable knives 21 enclose them outside. In addition, the base has a longitudinal groove along the axial line and serves as an abrasive, along which the cassette 11 with radio elements 19 is inserted into the pruning zone.

The U-shaped bend mechanism 8 is similarly arranged, in which, unlike the trimming mechanism 3, the base part serves only as a guide for the loading cassette 11, and the U-shaped clamp 25 is mounted in the top lever.

Bath 4 is equipped with a ventilator suction 26 "It consists of an internal bath 27 with solder and an outer casing 28, the space between which is filled with insulating material. The tin bath 4 has heating elements 29 and a ladle 30, which is connected to two threaded height-adjustable legs 31 with a bracket .32. The latter is hinged on the support 33 and in the middle part, through the shackle J4, is connected to the stem 35 of the pneumatic cylinder Zo, which provides lifting and lowering of the bucket 30.

On the end walls of the inner aanna 27, the pins 37 are fastened, two on each side. These pins 37 play the role of hinges, on which the right 38 and left 39 of the curtains swing. The shutters are interconnected by two springs 40 so that when the bucket 30 rises, it opens them with side walls to stretch the spring 40. When the bucket 30 is lowered, the springs 40 close the curtains 38 and 39 over the bucket 30.

Guide bar 9 is mounted on plate 2 using axis 41 (Fig. 5). Around this axis 41, it can rotate 180 from the stop 42 to the stop

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43, which are mounted on the plate 2 (Fig. 2). In the middle position, the guide bar 9 stops by means of a spring-loaded lock 44, which interacts with the safety gear 45. A groove is cut along the guide bar 9, along which the guide protrusion of the loading cassette 11 slides.

The cassette holder 6 is mounted on the housing 48 using a rotary shaft 46 and bearings. In the thickened part of the cassette holder 6 there is a groove in which on the axis 49 a holder 50 with a center hole 51, a dog 52 and a spring 53 is hinged. In the case 48 of the cassette holder 6 are in line with axis 41 and latch 44 are fitted with an adjustable stop 54 that interacts with the dog 52. Under the influence of the spring 53, the tooth of the dog 52 through the groove enters the center hole 51 of the holder 50. When the dog 52 rests on the adjustable stop 54, the spring 53 compresses and the dog's tooth 52 and exits the centering holes 51. The casing 48 is mounted a microswitch 55 which cooperates with the cam 56 the cassette 6

The design of the cassette holder 6 allows the cassette 11 inserted into it to perform the following movements: rotate horizontally from the flux bath 5 to the tin bath 4 relative to axis 46, rotate together with the holder 50 relative to axis 49 from the table plane to the vertical position and rotate the cassette 11 in the center the hole 51 of the holder 50 to 90 ° in each direction relative1

but the position of the charge of radio elements

nineteen.

A height-adjustable guide 5 / is mounted on the plate 2 between the guide plate 9 and the holder 50 of the cassette holder 6.

Zigovka mechanism 10 has right and left punches 58 with ZIG-shaped profile on the working part. The width of the punches 58 corresponds to the length of the loading cassette 11. The movement of the punches 58 is obtained from the piston 59 of the pneumatic cylinder 60 (Fig. 7). Lift up to the adjustable stop 61, the piston 59 spreads the articulated levers 62, which press on the lower shoulders of the levers 63, so that the upper shoulders of the levers 63 move towards one another.

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son holders 64. Thus, the punches 58 make a working stroke, when the piston 59 is lowered, the levers 62 and 63 and the punches 58 return to their original position — idle.

The operation of the pneumatic cylinders of the device is controlled by four electropneumatic valves, which are located in the control panel 7. The electropneumatic valves are switched on via microswitches located near the actuators (not shown). In the initial position, with the microswitches open, the pneumatic drives of the trimming mechanisms 3, flexible 8 and zigovki 10 keep the actuators open, and the pneumatic actuator of the bath 4 keeps the bucket 30 immersed deep into the solder.

Elements of the device, such as a loading cassette 11, knives 20 and 21 of the trimming mechanism 3, U-shaped bend 25, are flexible and zigochnye punches 58 are made easily interchangeable for quick changeover of the device from one size of the radio elements 19 to another.

The processing of the leads of the radio elements 19 in the device is carried out as follows.

In the initial position, the guide bar 9 is in the position locked by the latch 44. The loading cassette 11 with the raised upper flap 13 is located on it. The operator charges the cassette 11 with the radio elements 19, lowers the upper flap 13 to the horizontal position and fastens the flaps 12 and 13 the latch 16. Then the guide bar 9 turns to the left until it stops 42. In this position, its guide groove becomes coaxial with the similar groove of the trimming mechanism 3.

In this slot, the operator transfers the loading cassette 11 to the cutting zone. When the cassette 11 with its centering tip. 15 reaches the stop, the microswitch is triggered, and the electric pneumatic valve is actuated. As a result, the trimming mechanism's pneumatic drive 3 starts moving, it doesn’t fall down the columns 24 and through the crank 23 - upper knives 21. At the end of the stroke, the upper 21 and lower 20 knives are closed in a horizontal position and the ends of the radio elements 19 between them are cut off on the right and on the left to the required length.

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By opening the microswitch, the electropneumatic valve of the trimming mechanism 3 is switched, the pneumatic drive and the upper blades 21 are raised to the initial position. Thereafter, the cassette 11 returns from the cutting zone to the guide bar 9.

The following operations - fluxing and tinning of conclusions. To accomplish this, the guide bar 9 is rotated together with the cartridge 11 from the stop k2 by 90 ° to the position where it is locked with the lock and. Along the guide bar 9, through the guide 57, the cassette 11 is inserted with its centering tip 15 into the center hole 51 of the holder 50 of the cassette holder 6. In this case, the tooth of the pawl 52 falls into the groove of the centering tip 15.

When the cassette 11 with the holder 50 is raised and the pawl 52 comes off the adjustable stop 5, the cassette 11 is held in any position from falling out by the tooth of the pawl 52.

The holder 50 is turned to the flux bath 5, the cassette 11 is deployed therein so that the leads of the radio elements 19 are directed downwards, and they are dipped into the flux, then the cassette 11 is turned 180 ° and the second row of conclusions is dipped into the flux. After fluxing, the cassette 11, together with the holder 50, is transferred to a tub of k tinning.

When the cassette 11 is in position above the bucket 30, the microswitch 55 is activated, which turns on the electropneumatic valve of the 4 tinning bath. As a result, the compressed air enters the lower cavity of the pneumatic cylinder 36 and the piston with the rod 35 rises, and with it the bracket 32 and the bucket 30. As the bucket 30 rises, the curtains 38 and 39 open due to this movement the mirror of the solder is cleaned of oxide film.

Therefore, each time the cassette 11 with radio elements 19 enters the tinning operation, the bucket 30 scoops up fresh solder from below, rises above the level of the bath 27 and does not have an oxide film on the surface of the solder.

Having dipped alternately the right and left conclusions of radio elements of the 19th century. solder, the operator returns the cassette 11 to the guide bar 9. When lowering the holder 50 to the horizontal position, the dog 52 rests on a regular

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The stop 5, compresses the spring 53 and unlocks the tip 15 of the cassette 11.

The next step is to remove the cassette 11 from the holder 50 of the cassette holder 6 and, together with the guide bar 9, rotate to the right until it stops 43. The groove of the guide bar 9 is coaxial with the corresponding base slot of the U-bend mechanism 8. Radio cassette 11 with radio elements 19 is introduced into the bending and zigzagging area.

When the centering tip reaches the stops, the microswitch is activated and activates the pneumatic cylinder are flexible. As a result, the U-shaped clamp 25, falling into a horizontal position, bends the leads of the radio elements 19, pressing them to the side walls of the lower flap 12 of the cartridge 11. At the end of the stroke П Figurative 25, through a microswitch, turns on a zigovki electropneumatic valve, which directs compressed air into the lower cavity of pneumatic cylinder 60. Piston 59 moves up to adjustable stop 61, levers 62 through levers 63 cause s punches made noderzhateli 64, whereby its punches 58 Sig-shaped profile is pressed against the leads to the bottom sash side walls 12 of the cassette 11 having the same INA-shaped profile in cross section. Thus, the SIG-shaped forming of the leads is carried out.

After that, the microswitches break the power supply circuit of the electropneumatic valves, the U-shaped bending mechanism 8 and the zigovka mechanism 10 return to their original position, and the loading cassette 11 is led out of the bending zone to the guide bar 9. The latter, together with the cassette 11, rotates 90 ° to the left and snaps into place 44.

In this position, the cassette 11 is opened, and the processed radio elements 19 are dumped into the container. The loading cassette 11 and all the mechanisms of the device are ready to repeat the cycle.

Claims (1)

1. A device for processing outputs of radio elements, containing mechanisms for supplying radio elements in cassettes, mechanisms 29 SI a Tv Li SЈ Of 6Ј dlf gpf t 090p5l 1580604 in-in