DE2031808A1 - Device for folding laundry items and the like - Google Patents

Description

Dipl. Ing. H.-D. Ernicke patent attorney

Dipl. Ing. H.-D. Ernicke 89 Augsburg Schwibbogenplatz 2b Tel. (0821) 54035 Telegr. Technikrat Augsburg

Augsburg 6/26/1970 Your reference

■ Files 117-351,352 ern / kr

! "irma Kleindienst & Co., machine factory 89 Augsburg, Argonstrasse 8

Device for folding laundry items and the like.

The invention "relates to an apparatus for splitting Items of laundry and the like, in which, following a feed conveyor, several pairs of folding rollers with associated folding blades arranged and the movements of the folding swords introducing the item of laundry into the intake gap between two folding rollers by one the length of the laundry measuring and halving measuring arrangement are controllable. Folding machines that follow a mangle are available in various designs and with ' different folding methods. In the one known type of folding machine, by folding the leading tape as well as by rolling and unrolling the items of laundry Halving the same achieved. This is done with the help of clamping devices that grip the front edge of the item of laundry brought up on a means of transport and in a Hold the raised position until the rear edge of the U-shaped on the means of transport

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folding laundry in the area of the clamping device has been promoted.

In order to fold an item of laundry onto this airt, several, usually two or three clamping devices including the necessary spaces for unrolling the item of laundry are necessary. As a result, a relatively large overall length of about 4 - 4.5 m is required for such a folding machine.

Folding machines of this type are mainly used in laundries used. However, especially in laundries, the space available is often very limited, so that for reasons of space, in in many cases such a folding machine cannot be used. Attempts have therefore also been made by Change the folding method to reduce the space required.

For example, folding machines are known which combine roller folding and represent sword folding (DBGM 1996918). With such designs a gradual shortening of the Folding machine length reached.

A further disadvantage arises both in the pure roll-over fold and in the combined design through the folding method itself, because the starting edge of the "item of laundry is used as the starting point for the folding. As is known, it acts they are used items of laundry that are significantly different in shape differs from new laundry. The starting edge is no longer straight, but often curved or pointed other deformations that prevent uniform entry into the clamping device and thus give rise to malfunctions or impair the folding quality.

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An additional disadvantage is that the two layers of fabric are facing each other hinder each other when unrolling the item of laundry. Even though by blowing air between the two lengths of fabric Reduced friction occurs with less smooth fabric surfaces to an interruption of the unwinding process and thus to incorrect folds or distortions of the laundry items.

The invention aims at a minimum of effort to achieve even greater space savings, without having to accept the defects mentioned.

The essence of the invention is that the folding rollers about in the vertical direction one above the other and the folding blades are arranged alternately behind and in front of the folding rollers.

The vertical arrangement of the folding rollers brings the actual Space saving. By the Schva? T fold, the starting edge the item of laundry is no longer used as a starting point for folding. The same is always done with each of the two or three folds from the middle of the respective length of the towel. Further the sensitive rolling of the laundry is switched off.

In the context of embodiments of the invention it is provided that at the nip of the individual Fgltwalzenpaares a diagonally downwardly inclined guide plate or the like. connects. Here recommends it is when that adjoins the second pair of folding rollers Guide plate has a guide surface angled in the direction of the following pair of folding rollers, against which the following pair of folding rollers folded laundry hits and thereby distracted will. This has the advantage that the folding rollers

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To guide passing items of laundry properly and with a minimum of space, without accepting misdirection have to.

It also proves to be useful if below the cold rolling, a revolving discharge conveyor is arranged, which is inclined towards the output side, and advantageously the delivery side of the delivery conveyor from one between the individual Conveyor belts and under the upper run of which gripping guide plate is covered. This allows the leading

. Part of the item of laundry pass the folding rollers properly and get to a machine area, preferably below the storage table, where it does not interfere with the other units. this is important for properly measuring the length of large items of laundry, especially sheets. In addition, the invention achieves a further space saving in that the movement paths of the leading part of the item of laundry before the start the first fold and the finished folded item of laundry cross. To this end, in one embodiment the invention below a space between the Ab-

w transfer conveyor and a storage table as well as on the side of the folding blade assigned to the top pair of folding rollers a steeply downwardly inclined guide plate arranged on which the leading part of the item of laundry slides along before the start of the first folding.

Another embodiment of the invention is that the folding blade, which is located under the feed conveyor and assigned to the second pair of folding rollers, is rigidly attached to a lifting device, for example on the piston rod of a lifting motor

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and is guided by a pair of swing arms. Appropriately the folding sword consists of one at an angle to the direction of travel of the lift generator and in the direction of the nip of the pair of folding rollers employed folding plate. With this arrangement, a This folding sword achieves perfect functioning, which is considerably reduced in its space requirements due to the inclined feed conveyor and the subsequent folding rollers is. Precisely for this reason, trouble-free operation of the folding vision value is very important, which is achieved by the inventive Arrangement is achieved with ease.

These and other features of the invention are shown schematically and by way of example in the drawing. Show it:

1 shows a schematic side view of a folding device during the first folding process,

FIG. 2 shows a side view according to FIG. 1 during the second folding process and when the next item of laundry is subsequently conveyed and

3 shows a side view according to FIGS. 1 and 2 during the third folding process and the subsequent conveying of the next item of laundry.

The item of laundry .1 is fed by a feed conveyor 2 to the folding rollers 3 to 6, the first folding between the folding rollers 3 and 4 taking place by means of the folding blade 7 (s, Fig. 1)

The second folding then takes place between the folding rollers 4 and 5 by means of the folding sword 8 (see Fig. 2), while the next Item 9 of laundry is brought up at a short distance from item 1 of laundry.

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The third fold, if necessary, is made between the cold rolls 5 and 6 by means of the folding blade 10 carried out (see Fig. 3).

The first time it is folded, the front half of the item of laundry becomes 1 guided hanging down over the guide plates 11 and 12 or from the guide plate 12, which is also designed as a trough, added. After half the length of the laundry item 1 the Fold between the folding rollers 3 and 4 has happened The folding blade 7 is activated by the folding cylinder 13, i.e. guided into the intake gap between the folding rollers 3 and 4 and swiveled back into the starting position. As a result, the item 1 of laundry is halved and placed between the folding rollers 3 and 4 passed through to the other side, where it is directed via the guide plate 14 onto the delivery conveyor 15 (see FIG. 2).

Exactly as with the first fold, the second halving takes place, if half of the remaining length is the fold between has passed the folding rollers 4 and 5.

The folding blade 8 required for this is designed differently than the folding blades 7 and 10 in order to meet the space requirements. It is connected to the piston rod 16 of the folding cylinder 17 rigidly connected and each mounted laterally in swivel arms 18 with a stationary pivot point 19. When the folding cylinder 17 is actuated, the folding blade 8 is moved to the folding point in accordance with the circular movement of the pivot arm 18 brought up between the folding rollers 4 and 5. >

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As a result, the item of laundry 1 is again halved and between the folding rollers 4 and 5 passed through to the front, the front half of the remaining length on the guide plate 20 down slides.

If only two folds are to be carried out, the folding sword is used 10 is switched off and the item of laundry folded in this way slides from the guide plate 20 onto the storage table 21.

When performing a third fold with the folding blade OK the remaining length is halved again and guided backwards between the folding rollers 5 and 6. It arrives fully folded on the storage conveyor 1.5, from which it is also to Outfeed table 21 is conveyed. The storage conveyor 15 has on the delivery side one between the individual conveyor belts and below the upper run of which grips guide plate 23.

These processes only relate to the folding of large items of laundry. Small parts are only in the first Folding station folded once by means of a folding blade 7 between the folding rollers 3 and 4. The small parts folded in this way will be over the guide plate 14 to the conveyor belt 15 and from there to Outfeed table 21 headed. For folding such small items of laundry is the designated folding sword 7 in individual Faltsehwerter with their own independent drive, according to the desired Folding tracks or folding widths, subdivided. These single folding screens are switched together manually or automatically when folding large items of laundry, as is the case with the Folding flaps of the Abwälzfaltvorrichtungen is the case.

The stress relief of the entire folds can be carried out in a known manner take place by mechanical or electronic means,

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taking into account the speed differences between the ironer and the folding machine.

An electronic mean measurement can e.g. by means of a pulse counter, which is located at the same height as the infeed roller 22, take place. The pulse counter thus has a certain Distance to the folding sword 7, 8 or 10, which can also be expressed in pulses.

When an item of laundry enters this pulse counter, a switching element located at the same height switches the counting process on, whereby e.g. every pulse is registered in a memory, the pulse counter runs on the item of laundry and is driven by the same, first at the ironer speed and then when the ironer has released the item of laundry, with the folding machine speed.

If the item of laundry leaves the pulse counter, it switches on Switching element to a pulse generator running synchronously with the folding machine speed, the pulses of which are stored in the memory for the individual folding swords 2, 4 and 8-fold are registered.

Example;

The pulse generator is e.g. 154 cm "away from the first folding sword 7, which corresponds e.g. to 154 impulses »The folding sword 7 is then in the middle of 308 cm or 308 impulses. At a Items of laundry with a length of 240 cm equal to 240 pulses still remain 34 cm, which are synchronized with the folding machine by means of the running pulse generator are counted twice.

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In addition to the 240 pulses already counted and stored according to the length of the laundry, 68 more are stored, with which the memory 308 pulses are entered. at When this predetermined maximum amount of impulses is reached, the folding sword 7 is put into action »so that the item of laundry is centered is folded.

The process is repeated for the second and third folds. According to the further removal of the folding swords 8 and 10 is a higher impulse preset in memory and one 4- and 8-fold pulse counting required.

Claims

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Claims (1)

PATENT CLAIMS 1. Device for folding items of laundry and the like., In the several pairs of folding rollers with associated folding blades are arranged following a feeder conveyor and the movements of the folding blades that introduce the item of laundry into the intake gap between two folding rollers can be controlled by a measuring arrangement that measures the length of the item of laundry and cuts it in half, characterized in that the folding rollers (3, 4 » 5 ₉ 6) one above the other approximately in the vertical direction and the folding blades (7, 8, 10) are arranged alternately behind and in front of the folding rollers (3, 4 ₅ 5 _S 6). 2. Apparatus according to claim 1, characterized that on. the intake gap of the individual pair of folding rollers (3, 4 as well as 4 »5 and 5, 6) is a baffle inclined downwards (11, 14, 20) or the like. connects. ■ 3. Apparatus according to claim 2, characterized in that the one adjoining the second pair of folding rollers (4, 5) Guide plate (14) one in the direction of the following pair of folding rollers (5, 6) has angled guide surface against which the following 109853/1038 -2- The pair of folding rollers (5, 6) hits folded items of laundry and is distracted by it. 4. Device according to spoke 2 or 3, characterized in that maintenance) of the folding rollers (3, 4, 5, 6) a revolving discharge conveyor, which is mainly inclined towards the output side (15) is arranged. 5. Gate direction according to claim 4, characterized in that that the delivery side of the delivery conveyor (15) τ? οη a .between the individual conveyor belts and under their upper run gripping guide plate (23) is covered. β. Device according to claim 1 or f., Characterized in that below an intermediate space between the delivery conveyor (15) and a storage table (21) and on the side of the uppermost pair of folding rollers (3, 4) assigned Folding blades (7) a steeply downward sloping guide plate '41 + ■ ( ^r 12) is arranged on which the leading part of the item of laundry slides along before the start of the first folding. 7. Apparatus according to claim 1 or one of f., Characterized in, that the folding blade located under the feed conveyor (2) and assigned to the second pair of folding rollers (4 »5) (8) is arranged rigidly on a lift generator, for example on the piston rod (16) of a lift motor (17), and is guided by a pair of oscillators (18). 109853/1038 "φ- . ■ ■ 8. Apparatus according to claim 7, characterized in that that the folding blade (8) consists of a folding plate positioned at an angle to the stroke direction of the stroke generator (16, 17) and in the direction of the nip of the pair of folding rollers (4, 5). Dipl.-Ing.H.-D.Ernicke
Patent attorney 10 9853/1038