DE2619228A1 - SYSTEM FOR FINAL ACCEPTANCE OF WASHING MACHINES - Google Patents

Description

2619228 PATENT Attorney DIPLtING. PAUL DIEHL

LIETZENBURGER STRASSE 53-10OO BERLIN 15 CALL (030) 8 82 20 63/882 20

Berlin, April 26, 1976

Pietrο Miramondi

Via Mameli 3 20081 Abbiategrasso (Milano) Italy

System for the final inspection of washing machines

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The invention relates to a special plant for continuous Acceptance of washing machines that have a pantograph supply circuit and air conductors.

After the series production of the washing machines is finished, they are known to have a series of acceptance work subject to the help of skilled workers and suitable equipment. However, the acceptance work often requires different total times, which are extended because of the dead and non-productive times and downtimes caused by time switching devices include.

The consequence is an irregular use of time by the employees involved in the decrease and poor utilization of the Devices as well as reduction of the acceptance rate caused by the longest-running acceptance operations among those mentioned Individual work to be determined as part of the overall acceptance.

The invention is based on the object of reducing the overall time of the acceptance work to the minimum possible.

By using the acceptance system according to the invention the series of subsequent partial acceptance work of a washing machine are actually carried out with the exclusion of dead times.

More precisely, the acceptance system according to the invention consists of a movable road along which the individual washing machines without separation of continuity, expediently move forward from one another.

Each washing machine is fed by a junction box mounted on a small scale, along a special one a series of side-by-side armored bars Air line can slide.

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The aforementioned armored rods have, in particular, points of interruption of the electrical continuity at the ends of each one Decrease zone.

As a result of this measure, each washing machine is successively fed as it moves forward along the said air line by different devices that implement the various acceptance operations.

Such acceptance operations can be summarized as follows: checking the earthing, short-circuit, insulation and dispersion towards the earth, control of the energy consumption by the washing machine during the work process, control the switching times of the electric motor of the washing machine and a control of the leakage current.

It should be emphasized that the operation of the washing machine after the control of its circuits via the normal timer or program switch with which the washing machine itself is equipped.

The own movement of the mentioned time switch would, however, lead to a considerable extension of the acceptance times, which is why the time switch itself should be shifted manually by successive releases.

Incidentally, such an operating criterion lacks functionality requirements, The operator's sensitivity is left to decide on the moment which is to be passed over from one control phase to the next.

The aforementioned disadvantage, on the other hand, is eliminated by the system for removing washing machines, which is improved according to the invention.

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In such a subject of the present additional patent application forming acceptance system is provided that during the
Function control of the washing machine the movement of the timer or program switch placed on it is accelerated by the action of a special electric motor.

More precisely, such a small-sized electric motor is set up on the program switch itself and through a
specific control panel powered.

The, called control panel, which is practically made by the washing machine The energy consumed is determined and an assessment is made of whether the washing machine is working properly.

In the affirmative case, said control panel sends the aforementioned electric motor a pulse that causes the
Let the program switch advance until the next operating phase.

Such measures result in a continuous control sequence in order to actually carry out the controls themselves strictly required time.

The filling of the washing machine with water is also accelerated, preferably using, in addition to a normal supply pipeline with a quick connection, an additional one Inlet pipeline going into the detergent box the washing machine itself is used. The control of the switching times of the electric motor of the washing machine in the washing phase takes place through the use of a second, appropriately calibrated device.

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These and other features of a functional and structural nature of the system according to the invention for the acceptance of washing machines can be found in the following detailed description on the basis of the various in the Figures shown in the accompanying drawings can clearly be seen. Show it:

Fig. 1 is a perspective view of two, arranged on the feed line of the plant mentioned, washing machines individually powered by special sockets;

Fig. 2 in cross section and in two specific positions

the same schematically drawn feed line;

3 shows, in part, a generic washing machine

whose program switch is fitted with the small-sized electric motor, which is used to to accelerate the advance of the program switch itself;

Fig. 4 illustrates said feed line in side view;

5 shows the same infeed line in a top view; and

6, 7, schematically, the various devices performing the removal of the 9 washing machines.

According to the drawing, the system improved according to the invention for the acceptance of washing machines consists of a service line

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in the form of a movable carriage carrier which is used to transport a large number of washing machines 2, which are expediently separated from one another. which are individually connected by a plug 3 with just as many sockets 4, is used.

Said sockets 4 are suspended from a rod 5, at the end of which a pantograph 6 is attached, which has sliding contacts 7 is provided, two of which are used for power consumption and one for grounding.

The aforementioned sliding contacts 7 can slide in contact with the conductive part 8 of a series of armored rods 9, which essentially form a closed circuit (FIG. 5).

The aforementioned conductive parts point in particular to corresponding Were electrical discontinuities in such a way that they define several zones of decrease, which by specific Control devices are fed.

Specifically, in the first zone of the moving road, the device 10 acts on the generic washing machine 2, causing Check for ground, insulation, ground leakage, and short circuit conditions of the washing machine itself.

These control and testing work are carried out in particular, by setting the timer in such a way that it has the greatest possible number of closed contacts having.

The timer is then normally set to zero by placing its pointer on the one preceding the "stop" Position is brought beforehand.

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When the zero setting has taken place, the washing machine runs by triggering the timer for the first time and the washing machine is filled with water.

The mentioned water filling in the washing machine takes place over a quick connection 11 through the normal inlet hole and through the additional one used in the detergent box Inlet pipe 12.

However, it should be emphasized that the rapid loading of the washing machine 2 can also be achieved using other suitable operating systems.

The above-mentioned inlet pipes 11 and 12 are connected to an installation board indicating the water flow rate which includes special solenoid valves controlled by the solenoid valve of the washing machine.

Simultaneously with this loading, a small-sized one is placed on the button of the washing machine's timer Electric motor 14 attached, which is preferably provided with a magnetic coupling base

As soon as the water loading is finished, the water level leaves a pressure switch with one or more water levels trigger, which ensures that the supply of the heating resistors of the washing machine is switched on.

As a result, the washing machine itself has a certain power consumption, which is determined by the control panel 15.

The said control panel in turn sends the aforementioned electric motor through an appropriate sequence program circuit a current pulse, which causes the timer of the

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To trigger the washing machine during the next operating phase. The subsequent rotation of the basket indicates Control panel 15 a further current consumption, which recently acts on the timer via the electric motor 14 and so on until the washing is finished.

It should also be emphasized that the electric motor 14 is connected directly to the control panel 15, which is connected to a Numerous display scales are provided on which the checks carried out can be read o In the event of a malfunction As many scales show the presence of the disorder itself with a more precise reference to the failing one Operating phase.

In the latter case, the control panel 15 also prepares the locking of the removal phases, which are only then restored if you act on the time switch of the washing machine

It should be emphasized that the control panel 15 itself is preferably provided with a pair of small-sized electric motors is equipped to prevent a possible failure of the same. On the acceptance line you can also use the Two of the aforementioned switchboards 15 can also be used.

For this purpose, the air supply circuit has two conductors for the phase so that the particular circuit of two Washing machines with as many control panels (Fig. 2) is made possible. When the spin phase has been checked, the Supply pipes 11 and 12 and the electric motor 14 from Washing machine body 2.

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The washing machine 2 itself, in that it moves forward along the carriage carrier, is then controlled by the device 16, that checks the switching times of the motor. Such controls are also based on the determination of the power consumption by a previous program switching of the device itself is made possible with the rotation, standstill and basket movement switching times is related.

At the end of the acceptance line, the water drain is finally planned, which can be realized according to the most suitable methods.

From the above description and the various figures of the accompanying drawings, the extensive Functionality and the practical use of the system improved according to the invention for the acceptance of washing machines easily seen.

It goes without saying that various variations and changes may be introduced therein in the practice of the invention can without thereby in any way departing from the scope of the invention and the scope of protection.

Claims :

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List of drawing positions

1 Carriage carrier 2 Washing machine 3 plug 4th power outlet 5 pole 6th pantograph 7th Sliding contacts 8th Leading part 9 S troms 10 device 11 Quick connection 12th Inlet pipeline 13th Installation board 14th Electric motor 15th Switchboard 16 device

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Claims (1)

Claims 1.! System for the final inspection of washing machines, g e k e η η - V / draws the feed rate of the to be tested through a Washing machine (2) providing trolley carrier (1), each washing machine (2) being mounted on a small trolley Socket (4) is connected, which slides along a guide track, which consists of several busbars (9) consists, with each washing machine on its way through the final acceptance station through the various, the individual Devices performing acceptance work are fed in such a way that the acceptance work listed below is carried out Check the earthing, the absence of short circuits, the insulation, the stray currents to the earth, the current consumption the washing machine during the workflow, the Switching times of the electric motor of the washing machine and the stray current. 2. Acceptance system according to claim 1, characterized in that it consists of a service line, which is composed of a movable carriage base (1), which has a bearing for adjusting a large number realized by conveniently spaced washing machines (2), which by a plug (3) with as many Sockets (4) are individually and the said sockets (4) are suspended from a rod (5) on whose At the end of a pantograph (6) provided with sliding contacts (7) is attached, two of which are for power consumption and one for Serve grounding. 3. Acceptance system according to claims 1 to 2, characterized g e k e η η draws that said sliding contacts (7) with the conductive part of a number of essentially armored bars forming a closed air circuit 709819/0580 -Jl. can slide while in contact, the aforementioned conductive parts in particular in corresponding electrical layers Have discontinuity points in such a way that they have several acceptance zones fed by specific control devices define. 4. Acceptance system according to the preceding claims, characterized in that in the first acceptance zone a device acts to ensure that the earth, insulation, earth leakage and short circuit conditions are checked, such control works of a washing machine are carried out after the timer of the washing machine itself has been set so that it has the greatest possible number of closed contacts. 5. Operating procedures suitable for carrying out the functioning of the improved acceptance system according to the above Claims, characterized in that it is provided after the above control work that the called time switch is set to zero by moving its pointer to the position preceding the "stop" brings. 6ο operating method according to claim 5, characterized in that g e k e η η, that it is provided here that the first triggering of the timer is carried out after the reset has taken place by filling the washing machine with water, preferably using a quick connection via the normal loading hole and via the additional inlet pipe that goes into the detergent box of the washing machine itself is used, the aforementioned loading pipes derived from a special board that the Indicates water flow. 709819/0580 -12- 7. Operating method according to the preceding claims, characterized in that at the same time with the mentioned load on the button of the timer of the washing machine a small-sized electric motor 14 is attached, which is preferably provided with a magnetic coupling base, wherein the rotation of said electric motor can cause subsequent tripping of the timer pointer by a special switchboard is controlled by determining and evaluating the energy consumed by the Washing machine sends a current pulse to the electric motor itself or not during its operating phases. 8. Operating method according to the preceding claims, characterized characterized in that after the control of the spin phase of the washing machine, the inlet pipes and the electric motor can be removed from the body of the washing machine itself, such washing machine thereupon is controlled by a suitably programmed device that checks the switching times of the motor, which Check for the determination of the power consumption by the Engine itself based. 9. Operating method according to the preceding claims, characterized characterized in that it is provided that at the end of said removal line the water drain from the washing machine is turned off. Patent attorney