Trough mangle

Details Trough mangle Trough mangle

2002-02-07

2004-08-24

Izaguirre, Ismael (Department: 3765)

Textiles: ironing or smoothing

Smoothing machines

Roller presser

Reexamination Certificate

active

06779285

ABSTRACT:

BRIEF SUMMARY OF THE INVENTION
BACKGROUND OF THE INVENTION
1. Technical Field
The invention relates to a trough mangle having a mangle roll that can be driven so as to revolve and a flexide mangle trough associated with the mangle roll.
2. Prior Art
The invention pertains to trough mangles, which are used in commercial laundries. Here, the mangling performance of such mangles is critical. High mangling outputs are achieved in known trough mangles by the latter being provided with two or an even larger number of mangle rolls located one after another. Each individual mangle roll is assigned a curved mangle trough. The pieces of laundry are moved along on the successive mangle troughs by the mangle rolls. In order to transfer the pieces of laundry from one mangle trough to the other, curved bridges are arranged between successive mangle troughs. In order to move the pieces of laundry along on the bridges, conveying means are provided, which are usually mangle belts, as they are known. The bridges and the mangle belts require extra expenditure during the production of such trough mangles. Furthermore, during the transfer of the pieces of laundry from one mangle trough to the other in the region of the bridges and the mangle belts, malfunctions may occur which, in the extreme case, lead to interruptions to the mangling operation. Finally, the mangle belts leave imprints on the laundry which, above all in the case of table linen, spoil the visual appearance.
On the basis of the above, the invention is based on the object of providing a trough mangle for commercial laundries in particular which has a high mangling performance but does not have the disadvantages cited at the beginning.
A trough mangle to achieve this object has a mangle roll (
10
) that can be driven so as to revolve and a flexible mangle trough (
12
) associated with the mangle roll, wherein the mangle roll (
10
) has a diameter which is greater than 1600 mm. The fact that the mangle roll has a diameter which is greater than 1600 mm, in particular in the range between 1600 and 2600 mm, preferably between 1800 and 2400 mm, permits the performance of a trough mangle to be increased without additional mangle rolls. Surprisingly, it has been shown that the mangling performance in the trough mangle according to the invention may be doubled without the roll diameter being twice as large. The mangle performance of a conventional trough mangle with two mangle rolls which, for example, have a diameter of 1300 mm, can be achieved in the case of the trough mangle according to the invention with a single mangle roll whose diameter is around 2000 mm. This is associated in particular with the fact that the resilient behavior of the mangle trough in the circumferential direction of the mangle roll is improved at greater roll diameters. In addition, the loss of smoothing path along the bridges between successive mangle rolls and the loss of evaporation performance are dispensed with. Increasing the mangle performance by means of a mangle roll of a greater diameter instead of the previous sequence of a plurality of mangle rolls also leads to bridges between successive mangle troughs and, in particular, mangle belts susceptible to faults no longer being required.
The trough mangle according to the invention can also have a plurality of successive mangle rolls and mangle troughs with diameters of more than 1600 mm, in order to increase the mangle performance further. Although the pieces of laundry then also have to be transferred from one mangle trough to the other, as a result of the larger mangle rolls, the number of mangle rolls and mangle troughs can be reduced, so that a lower number of transfer operations of the pieces of laundry to following mangle troughs is required, which also leads to a reduction in the expenditure on construction and the susceptibility of such a trough mangle to faults.
A further trough mangle for achieving the object cited at the beginning or for developing the trough mangle described previously wherein a drive side of the mangle roll is assigned a drive, and the drive carries the mangle roll (
10
) on the drive side (
33
). Accordingly, the end of the mangle roll which is associated with a drive (drive side) is carried by the drive. In particular, the drive side of the mangle roll is mounted in the drive unit. This renders a separate bearing for the mangle roll on the drive side superfluous. In addition, the structural dimensions are reduced, since as a result of the missing separate bearing on the drive side, the drive can be placed closer to the relevant end of the mangle roll.
The drive side of the mangle roll is preferably mounted on an output drive shaft of the drive, specifically in particular of a gearbox belonging to the latter. Because of its design, the output drive shaft of the gearbox has an internal mounting which is suitable to absorb the bearing forces of the mangle roll on the drive side.
The mangle roll is connected to the drive, in particular the gearbox, via a coupling flange, according to a preferred refinement of the invention. This separate coupling flange may be provided with a torque-transmitting means to be connected to the gearbox and can be flange-mounted on the relevant end of the mangle roll in a simple way by means of screws. This makes it possible to achieve a connection between the drive, in particular the gearbox, and the mangle roll which can be produced simply and easily replaced if required.
A further trough mangle for achieving the object cited at the beginning or for developing the trough mangle having at least one mangle roll (
10
) that can be driven so as to revolve and a flexible mangle trough (
12
) associated with the mangle roll (
10
), wherein a drive (
32
) of the mangle roll (
10
) has a gearbox which is designed as an epicyclic gearbox, an angled epicyclic gearbox (
36
), a cyclo gearbox or a harmonic drive gearbox Accordingly, the gearbox of the drive is designed as an epicyclic gearbox. This makes it possible to reduce the drive speed of a motor, in particular of an electric motor, to the relatively low rotational speed of the mangle roll which, in particular, has a large diameter. The epicyclic gearbox makes it possible to implement large step-down ratios with small structural dimensions. Furthermore, the output drive shaft of the epicyclic gearbox has a relatively high load bearing capacity, which permits the mangle roll on the drive side to be mounted directly on the output drive shaft of the epicyclic gearbox. Use is preferably made of an angled epicyclic gearbox. As a result, the electric motor serving to drive the mangle roll can be flange-mounted on the angled epicyclic gearbox with a longitudinal axis oriented at right angles to the longitudinal axis of the mangle roll. This leads to a particularly compact structural configuration of the drive side of the trough mangle. In addition, the gearbox may alternatively also be a cyclo gearbox or a harmonic drive gearbox.
A further solution of the object cited at the beginning, which can also be used to develop the trough mangle having at least one mangle roll (
10
) that can be driven so as to revolve and a flexible mangle trough (
12
) associate with the mangle roll (
10
), wherein, on the drive side (
33
) and on the non-driven side (
34
) opposite the latter, the mangle roll (
10
) is connected to a frame (
15
) such that it can pivot, in each case via a lever mechanism (
30
,
31
). Accordingly, the mangle roll is pivotably connected to a frame, in each case via a lever mechanism, both on the drive side and on the opposite side, namely the drive-free side. The lever mechanisms make it possible to connect even mangle rolls with large diameters and correspondingly high weights, but also with high contact forces on the mangle trough to the frame in a stable manner.
According to a preferred development of the invention, the lever mechanisms of the drive side and of the drive-free side are coupled to one another. This is preferably done by means of a compensating shaft. As a result, synchronization of t

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