DE2141577C3 - - Google Patents

Description

The invention relates to a feeding device for items of laundry to a laundry processing machine with a winding store having two drivable winding drums, with between the winding drums reciprocating storage medium.

From U.S. Patent 2,916,227 there is a rewinder known, in which the unwinding drum has a slip clutch and a stepless Gearbox is connected to the take-up drum, the continuously variable gearbox from a follower lever is controlled, which rests with a roller on the roll of fabric wound on the drum and the translation of the continuously variable transmission changed depending on the diameter of the roll of fabric. The task of this slip clutch is that of the drive shaft of the continuously variable transmission to keep transmitted torque constant regardless of its speed.

U.S. Patent 2,883,122 is another Wrapping device known in which the tension prevailing in the fabric web is always constant should be held. For this purpose there are two differential gears, a braking device and a stepless one Gear provided so that this known device is relatively complicated. Provided the two drums are to be used either as winding or unwinding drums, so-

even two continuously variable transmissions are required.

From the German Auslegeschrift 1073 407 is a drive device for tree and winding machines with an in the power transmission path s-om Drive motor connected to the winding device

ίο known epicyclic gears, one of the two Sun gears of this gearbox with the drive motor, the other sun gear or the rocker arm of the Planet gears connected to the winding device and neither with the drive motor nor with the

Winding device connected part of the planetary gear is provided with a braking device is. By increasing the braking force exerted by the braking device, the output speed of the planetary gear or the speed of the

Winding device from the value zero to the maximum speed can be increased. In this known device, neither the winding and the unwinding drum are Connected to one another via a gearbox, a slip clutch still reaches the Anas turn.

Furthermore, from the US Pat. No. 2,412,509 a device is known in which with the unwinding drum a braking device is connected, depending on the lateral displacement of a

Fabric pulley is controlled hydraulically, with a slack in the fabric web prevailing tension the pulley under the influence of a weight against the tension of the fabric moved and thereby applied the brake

is, so as to slow down the unwinding drum, so that the tension in the fabric web increases and is adjusted to the desired value. With this device only the winding drum is with connected to the drive motor, and the unwinding drum is driven exclusively by the one in the fabric web prevailing tensile stress driven.

It is also known from US Pat. No. 2,819,416, which is coupled to a compressed air turbine Drive shaft of a yarn take-up bobbin

assign a magnetic braking device, with the help of which the speed of the yarn take-up bobbin can be regulated to a predetermined value or kept constant. A drive connection between the compressed air turbine and the supply reel is not provided, so that this only is set in rotation by the yarn tension.

Finally, from the USA patent specification 2 835 454, the German Auslegeschrift 1 102 687, German Auslegeschrift 1 065 805 and German Patent 1 000 005 wrapping devices known whose drums are connected to one another via hydraulic gears, with their help the speed and tension of the fabric web can be regulated.

The object on which the invention is based is to provide a feed device of the type described at the outset Further develop the genus in such a way that there is a shortage operation or an operation at the various items of laundry are continuously fed to a laundry processing machine should, is possible, regardless of the respective working speed of the processing machine, the laundry items in z. B. more suitable for ironing

3 Λ 4

To pick up and also to deliver again, the feed device works in such a way that it should also be possible to use the iron-ready at a special loading point within the Position by intermittent, more or less long laundry operation, the items of laundry are introduced into the permanent alignment of the items of laundry to bring about. As required to lead. 5 such feed devices are then individually

To solve this problem, one or more laundry treatment machines are used.

tion of a buffer as a feeder machine, in particular delivered to a mangle. the

assumed, whereby it is essential that the intermediate input of the laundry items into the mangle takes place there-

Schenspeicher the laundry items in operationally real after automatically, the supply device of

Can take up location and also release it again, io the lack is driven off, namely with the

without causing deterioration. illustrated embodiment based on

For this purpose, in the manner according to the invention, a belt roller 16 is usually that of a mangle

that the two winding drum shafts via a two-assigned input belt 17.

Wavy differential gear in mutual two- The drive of the feed device when the drive connection is on the way, the two coupling 15 as when unwinding has a significant influence on the counter-rotating free sprockets on a proper running of the storage medium and on slip clutches with preset 15, in particular by the are coupled during winding erge-slip torque. The advantages of this increasing train tension. In the embodiment according to the invention, on the one hand, the wik device is provided that when the kelirommeln are fed into the feed device in both directions, the lower ones, that is, in the winding and unwinding sense, from Storage drum 13 are rotatable in the unwinding sense, that both are ben on the other hand. For this purpose, a drive motor drums are driven on the frame 10 and that, furthermore, at the lower gate, in particular an electric motor 18, the different circumferential speeds of the drum via a belt drive 19, 20 on an in-between the necessity of the connection 25 wave 21 acts. This in turn drives a pinion allowing slip through the slip clutch 22 and a chain 23, a sprocket 24 on the Trom account. The roll-up shaft 25 of the lower storage drum 13 on the drums.
The drum shaft 25 of the lower storage drum is also used in the manner described below, for example, for driving one of the two 30 in drive connection with the drum shaft 26 of the drums . upper storage drum 14 via one between the two

The inventive solution of developing drum shafts in a special way

Measures can be found in the subclaims; Compensating gear 27, which is in both drive

the directions achieved through the measures mentioned there come into effect in a certain way.

Advantages result from the following detailed 35 The compensating gear 27 contains two slip-

lated explanation. couplings 28 and 29, which z. B. as commercially available

In the following, further details are provided on the basis of multi-plate clutches on which-

of an embodiment shown in the drawings ren clutch shafts 30, 31 each have a freewheeling chain

example explained in more detail. It shows tenrad 32 or 33 is mounted. Still reside

F i g. 1 shows a schematic view of a supply device 40 rigidly on the coupling shafts 30 and 31, respectively. ordered sprockets 34 and 35, each with the

F i g. 2 shows a rear view of the device according to associated drum shafts 25 and 26 via chains

Fig. 1, are in driving connection. Each slip clutch 28

F i g. Figure 3 is a partial view of the device of Figure 13 and Figure 29 is conventional with a housing wheel

to F i g. 1 opposite side, 45 36 and 37 equipped, which via chains and the

4 shows a detail of the storage carrier guide in the free-wheel sprockets 33 and 32 in connection.

enlarged scale, hen.

F i g. 5 shows a plan of FIG. 4, The compensating gear 27 designed in this way works

F i g. 6 shows a detail of the front deflection roller as follows: When entering the laundry items into the

For the storage medium in horizontal section, the drum shaft 25 becomes the lower device

corn on a larger scale, storage drum 13 driven by the electric motor 18

F i g. 7 a further detail of the device in side. The movement of the drum shaft 25 is on

ten view according to FIG. 1. the sprocket 34, from this to the clutch

The feed device for items of laundry is as a shaft 30 of the lower slip clutch 28 and from mobile device trained. For this purpose, 55 of these are on the slip clutch 28 on the on a frame 10 below rollers 11 and 12 on coupling housing arranged housing wheel 36 transferred. In the frame 10, one is rotatable in each case. The freewheel sprocket 32 runs in this Beuntere Storage drum 13 and an upper storage direction of travel free. The case sprocket 36 drum 14 stored. The freewheeling chain wheel 33 drives on the coupling ring between the two storage streams 13 and 14 is a z. B. as a film web from t> o wave 31, such that this coupling shaft 31 Plastic od. The like. Trained storage medium 15 is initiated. The drive arrives without a problem the inclusion of items of laundry in the projection of the slip clutch 29 on the rigid direction to the upper storage drum 14 wound sprocket 35 and from this to the upper drum while at the same time running down from the lower melter shaft 26. ·

Storage drum 13. The items of laundry (not shown here) are therefore chosen together with the storage traction that there is always a certain amount of slip in the transmission ger 15 is taken up on the upper storage drum 14. As a result, on the one hand, the same-VeIi. time drive of both drum shafts 25 and 26

on the other hand, the gene is also free downwards, with a part being replaced by a

Storage medium 15 is caught under a desired tension collecting tray 68 on frame 10,

held, but without it being used as a traction means for the The collecting trough 68 consists of a sagging

Transmission of the drive when loading the lowing cloth 69, which in a pivotable

Device is used. The required speed 5 frame 70 is arranged. For the transport of the

The swiveling frame 70 and

Appropriate selection of the core diameter knives so that the collecting trough 68 can be folded up

Storage drums 13 and 14 are guaranteed. the, so that these parts during transport as well as in the

An embodiment is expedient in which the delivery of the laundry items to the mangle does not interfere with

Drum core 38 of the lower storage drum 13 io ren.

The foot switch 64 is in this embodiment

core 39 of the upper storage drum 14, expediently at the collecting trough 68 or

in such a way that ir. starting position, when the whole is attached to the frame 70 and is

Storage carrier folded onto the lower storage drum 13 (see FIG. 7).

is wound up, the diameter of the carrier winding. The drum core 38 can thereby facing edges of the consecutive. P. have a diameter of 300 mm and the drum items of laundry in the device with a milking core 39 have a diameter of 500 mm. know overlap will be saved. This over-In ^a "t delivery of the items of laundry to a mangle 20 lobing is od when passing through the pieces of laundry. The like. The electric motor 18 is turned off. The on by the shortage due to the AntriebsverhäHnisse in drive takes place via the storage medium 15, which eliminates the ironer (higher speed of the magnetic forest due to a friction force driven by the ironer than the input belts) in such a way that the drive roller 40 is removed from the upper storage drum 14 that the items of laundry in the ironer are withdrawn without any nominal value and with the setting of the intermediate gear 25 Values gaps between the successive bes on the lower storage drum 13 wound items of laundry run.

will. The movement of the upper drum The feeding device has special means meiwelle 26 over the gear 35 and over the upper to a smooth transfer of the laundry items Slipping clutch 29 on the housing wheel 37 transmits a deficiency or the like, in particular to the inputs, since in this direction of movement the freewheel belts 17 ensure the defect. To this sprocket 33 irr: rotates. The housing sprocket 37 serves as the function of the upper storage drum 14 The freewheel sprocket 32 rubs on the lower unwound storage carrier 15 via a deflection coupling shaft 30, which in turn directs the drive and drive device to the input the chain wheel 34 and from here to the lower belt 17 of the downstream machine in a single-drum shaft 25 forwards. A handle can also be brought about with this movement. This deflection and angulation phase If the film web is held taut, the drive device is on the side of the frame 10 the respectively desired tension arranged by the orderly support arms 41, which around a Slipping clutches 28 and 29 are set support arm bearings 42 are pivotable. On which the sale. The Ε-motor can be on the opposite side of the laundry items on this movement default side run along empty corridor. The device is also 40 at the end of the support arms 41 by a cross bar a foot switch 64 is assigned. This enables 43 connected to one another and by a locking cord particularly favorable operation of the device device 44 in the desired angular position when storing the laundry items. It needs to be ascertained

namely, no separate spreading and clamping. At the delivery end, arms 41 two are arranged at a distance from one another and smoothed out between the carrying device with which the items of laundry are spread 45 arms 41. Rather, the pressure rollers 45 and 46 which are presented in this way are supported. This presses that initially a small portion of the lower run of the storage carrier 15 reaches the laundry items to be stored in the upper drive roller 40 when the drive retracts the ironer storage drum 14 and thereby through or the belt roller 16 onto the storage carrier 15 Storage carrier 15 clamped on the roll 50 is to be transferred. The drive of the cooing roller is. By switching off the drive motor 18, 16 is therefore only effective when the two pressure rollers 45 and 46 of the storage carrier web 15 now have sufficient time to press on the circumference of the drive roller 40 in the area of the Ti on the foot switch 64,
sches 49 to spread out the item of laundry by hand. Furthermore, a discharge roller 47 is mounted on the support arms 41 at the outermost and smooth side, and that if necessary from the end. This is in the pre-cut. The smoothed-out and spread-out cases with an extremely small diameter are then formed by multiple beta knives, namely about the same size as the foot switch 64, discontinuously with an opening of 15 mm. Since, in the present device, the upper storage drum 14 is inserted. With this drive of the input belts 17 directly and without moving, the carrier web 15 can be transferred to the storage wall with the lowest possible mechanical speed differential gear, since no discharge elements are required, no laundry is properly stored in relatively short speed differences compared to the input time, belts 17, so that for the proper transfer of the particularly large or long items of laundry to the input belts 17, the height of fall is kept to a minimum when storing the same in the device 65 in the area of the discharge roller 47, the item of laundry must be entered in sections. This is smoothed out by means of a special cut and section. The parts of the item of laundry that are rearward in the direction of the delivery structure of the discharge roller 47 with a small diameter hangs. The discharge roller 47 is namely more-

times on supports 48 a, 48 b supported, namely on a table 49 arranged between the support arms 41. Between the individual supports 48 a, 48 b , individual sleeve-shaped roller sections 47 a, 47 b are rotatably mounted on a continuous, rotatable support rod 50.

The discharge roller 47 is also arranged so as to be pivotable relative to the support beams 41. this is achieved in the illustrated embodiment in that the table 49 by one of the Discharge roller 47 from lying axis 51 pivotable relative to the support struts 41 and by one in one Long hole 52 running locking screw 53 in the desired relative position, which is from the height of the Input belts 17 results, is designed to be lockable.

The drive connection between the belt roller 16 and the drive roller 40 is very simple Way produced, namely by tilting the entire device on the drive roller 40. To this Purpose in this delivery position of the laundry items, the device is inclined and attached to the Lack pressed. For this purpose, a lifting device, for example, is on the rear side of the frame 10 a commercially available jack 65 is arranged, with the help of which the frame 10 is raised on one side so that only the front wheels 11 have ground contact. The lifting device, in this case The case of the jack 65 is arranged in an inclined position such that, in addition to the upright force component, with which the frame 10 is raised on one side, a horizontal, the device to the Lack of pressing force component comes into effect. This also helps with any unevenness in the floor always a reliable drive connection between the feeding device and the ironer or the like. Manufactured and maintained.

A thread guide device is also used for the trouble-free delivery of the laundry items to the mangle or the like intended. It is common in such winding devices when entering the laundry items For example, two threads 55 and 56 are wound onto the upper storage drum 14. The strings 55 and 56 run over a thread holder 57 which is arranged pivotably on the support arms 41 is. When the items of laundry are being stored, the thread holder 57 is in an upright position Position. When dispensing the laundry items into the mangle, the thread holder 57 is approximately in a horizontal position Pivoted position in which the front end, which is formed by a rod, over the discharge roller 47 protrudes and thereby the storage carrier 15 guided around this discharge roller 47 protects.

The two threads 55 and 56 are unwound from thread reels 58 and 59 when the items of laundry are inserted. The thread rollers 58 and 59 are rotatably mounted on a common roller shaft 60 and by slip clutches 61 and 62, in the illustrated embodiment in the form of spring-loaded disks that come to rest laterally on the thread rollers 58 and 59 pressed against a stop, with the roller shaft 60 in drive connection. The roller shaft 60 is driven by the motor 18, namely by engagement of a sprocket 61 α equipped with a freewheel in the chain 23. When the threads 55 and 56 are pulled from the Fadenao rolls 58 and 59, they run independently of the by the action of the freewheel from the drive transmitted by the electric motor 18, with possibly still differences in movement being made possible by the slip clutches 62 and 63, so that the threads 55 as and 56 are pulled off the thread rollers 58 and 59 with a tension that can be adjusted by the slip clutches 62 and 63.

When the laundry items are delivered to the mangle, the threads 55 and 56 are placed on the thread reels 58 and 59 wound up again by the drive from the roller shaft 60, with a possible Slip through the slip clutches 62 and 63 it is made possible. In order to take 5S and 56 to maintain a minimum tension in the threads and thereby cause the threads to run off of the thread rolls 58 and 59 to avoid running, the threads 55 and 56 over thread tensioners 66 and (Fig. 2). These thread tensioners 66 and 67 exist for example from z "> egg plate-shaped disks that are pressed together by a spring and thus form a groove for receiving the thread.

The roller shaft 60 is also provided with a brake (not shown) which, when winding the threads 55 and 56 avoids that when stopping the drive or the electric motor 18 the Roller shaft continues to run due to the kinetic energy, but is stopped immediately.

1 sheet of drawings

409622/162

Claims (4)

Patent claims: 1. Feeding device for laundry items to a laundry processing machine with a two drivable winding drums having a winding store, with between the winding drums reciprocating storage medium, characterized in that the two Winding drum shafts (25, 26) via a twin-shaft differential gear (27) in mutual There are two-way drive connection, the two coupling shafts (30, 31) of which are opposite to each other Freewheel sprockets (32, 37 or 33, 36) and slip clutches (28, 29) with preset Are coupled. 2. Feeding device according to claim 1, characterized in that the temporary Aufaihmc of the empty storage medium (15) serving lower winding drum (13) by means of a Drive motor (18) via a gear (19 to 24) while the laundry items are being stored can be driven into the upper winding drum (14). 3. Feeding device according to claim 1 or 2, characterized in that the temporary Receiving the storage medium (15) with placed laundry items serving upper winding drum (14) by means of the storage medium (15) via one of the latter and with the drive (16) of the downstream processing machine adjustable friction drive roller (40) can be driven. 4. Feeding device according to one or more of the preceding claims, characterized in that that the diameter of the upper drum core (14) for receiving the items of laundry occupied winding drum approximately the outer diameter of the storage medium wound on the lower drum core (13) (15) corresponds.