DE7512723U - Welding machine operating by means of a molten tin shaft - Google Patents

Description

Dr. Horst pupil ie. April 1975 ^

Patent attorney
6 Frankfurt / Maim.

NMdMfr.62, Tel. 237220 ';

IEMME ITALIA S.p.A. - Sesto San Giovanni (Italia) j |

Using a tin cylinder

C ^) Welding machine

Accordingly, the present ERJ / indung is a means \

the transient wave of a melt. made of tin or made of

a zinnia _o ieruiit; working welding machine. :

Such Laaciiinen are used, for example, to |

Osciiweissei: tier lead wires running on one side>

one a \ xl of the other side printed circuit boards i

supporting plate made of phenolic resin protrude. j

The known welding machines of this type have

i a longer machine bed on which the j

sending disk moved from one end to the other
and one at a time in successive stations
! Clock of the intended. Welding game accordingly

treated v / ird.

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A first consequence of this method of operation is a considerable length of the machine, which for example 3 m or more. At r \. In contrast, the machine according to the invention is a compact one Construction of limited length dimension, resulting in a lower cost and in particular there is also less space required for the machine.

Another shortcoming in conventional machines of this type is that the The feed and discharge stations are located at the beginning and at the end of the machines, which is why the Operator is forced to move from one end to the other, or has to Machine two operators are employed.

In the machine according to the invention, a single operator is sufficient, who is only at one end of the Machine can remain.

The well-known machines are finally polluting the work area with the

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reducing acid smoke and metal fumes. The machine according to the invention however, is provided with appropriate means to purify those contaminated by these vapors Provide circulating air.

The invention is described in more detail below with reference to the accompanying drawing. Show it:

Pig. I a schematic longitudinal section through a machine according to the invention according to a preferred embodiment;

Fig. 2 is a schematic partial diagram of the same Machine, and

3 shows a further schematic longitudinal section on a smaller scale with particular reference on the air purifier.

As can be seen in the drawing, the machine shown has a machine bed with a inclined track consisting of a guide 1 on one side and a second guide 1 on the other side as well as from a drag chain 2

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exists, whereby the Mitnehcierket., e on a motor-driven drive wheel 3 »-n'a on a sprocket 4 freely rotatable on its axis in the ^ eoOiiloüsenen ICr-jiy uu; runs- A on the Ke io-j 2 . fastened Rah ;; en 5 serves to support the a ^ earuckben οΰα _.:: provided 1ΐα.η ^ plate 6.

Between uen u j the guided tours 1 there is 'trecl' T, yourself

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a verhilitniscaässig lan ^ e ΟίΊ'ηιιυ ^, unt ^: vjeic ■■ one after the other a ϊ. ei / .t.:; .. iuundstUt ^ en S ₅ from ■ the. za ^ e ^ flat Zei ;. the

Overflow of the melting shaft is prevented, and a Kotor 10, which has eir. Vorcelege 11 eijie in ü, r

Provided are melt immersed pump drives /. Ii -aiich is another one that is kept warm to preheat the plate ο Shell 12 is provided.

A control panel 22 uu-summarizes the switching and setting elements namely a switch 13 for Aufah ren of the game and various potentiometers 14, 15, 16, which are used to set the

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Welding device temperature, the preheating time and the Welding time (or welding speed) to serve.

In a modified version, instead of the switch 13, a. Foot switch 23 may be provided.

As can be seen from Fig. 3, the machine has a chimney hood 171 over an end Pipeline 18 is connected to an exhaust duct 19 in which a filter body 20 and suction fan 21 are arranged.

The operation of the machine described is as follows: The machine at the end G nenwärter sets the plate 6 on the frame 5, actuates the switch 13 or 2y and thus sets the machine chain 2 in circulation. The chain now promotes the frame with the plate to above the pickling tank 7, where the underside of the plate 6 is stripped; then the frame is moved slowly over the crucible (in which the pump is not yet in operation and therefore there is no melting wave), the heat radiated from the crucible causing the plate 6 to be preheated; end-

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Lich gets the plate over the shell 12, where it to the preset by means of the potentiometer 15 Temperature is heated.

After a predetermined stopping time, the motor driving the driver chain 2 starts up reverse direction of rotation in motion and the plate 6 is returned to above the crucible, the pump now in operation in the crucible 8

Il

and causes the formation of the overflow wave from molten tin. By means of this melting shaft, the height of which can be adjusted as required, the last cycle of the work cycle, namely the welding of the printed circuit, is carried out. On its further path, the plate stops in station Ci , where the machine operator removes the plate from the frame 5.

When the suction fan 2i is in operation

ti

the polluted air is discharged through opening E. the chimney cap 17, the pipeline 18 and the filter body 20 are sucked off and via the outlet U discharged. In doing so, the air is transported through the patter body 20 from the pickling tank 7 rising smoke and dta from the crucible

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■ ι : i " ⁷ "

8 rising metal! / IfI

It is understood that in practical Verwirk lic of the machine hung various modifications allowed are "without exceeding the claimed scope of the invention.

Protection claims

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Claims (1)

1 · Schleissma working by means of a molten tin shaft sch ine characterized by a machine bed with an inclined track, which consists of a guide (i) on one side and a second guide (i) on the other side as well as a driver chain (2) consists, the driver chain on a motor-driven and a freely rotatable on its axis chain wheel (3 »Ό revolves in a closed circle and a frame (5) is attached to this Sette, the one provided with a printed circuit board (C) carries while underneath the two guides (1) successively a pickling tank (7) »a Crucible (8) for the tin melt with a Muni nozzle (9) »from which the melt is kung a pump to overflow and form the Welding shaft is brought, and finally a shell (12) for heating the plate (6) are arranged. 2. Welding machine according to claim 1, characterized through a control panel (22) with a switch (1}) for starting the work cycle and with potentiometers -9- 15, 16) to set the welding temperature, the heating time and the welding time. 5 · Welding machine according to claim 1 and 2, characterized marked that they have a breath catcher cap (17)> via an end pipe (18) with a filter body (20) and a suction fan (21) enclosing channel (19) is in communication, having. 4. Welding machine according to claim 2, characterized in that that it has a foot switch (23) for starting the work cycle. //.:.■ O /, 0P75