DE2737676C2 - Device for folding textile fabrics - Google Patents

Description

The invention relates to a device for Folds for textile fabrics .. according to the generic term of the claim.

In the case of this roll-folding device for items of laundry, which corresponds to the type mentioned at the outset, it is known (DE-GM 73 17 606) that the folding flap in a slipping off the leading edge of the laundry item when loosening the clamping is favoring steeper position. This is achieved by that the folding flap is designed as a ramp surface pivotably arranged in a rocker arm, which is held in a flat open position by a torsion spring arranged on the rocker arm. At the Pivoting up the folding flap is the item of laundry between the front edge of the clamping plate and a Stop stuck. The further upward movement of the rocker arm causes the rear edge of the Clamping plate strikes against another stop. This turns the angle of the clamp plate into the rocker arm enlarged, so that a torsion spring operated pawl is opposite to that of the leading edge of the laundry gripping side of the run-on surface engages. When lowering the rocker arm causes the actuated pawl that the clamping plate is brought into a steeper position and thus an easy one Slipping of the item of laundry can be reached from the clamping plate. After another item of laundry to be folded Pressing a button, the rocker arm is further lowered so that the ramp on the The pawl slides by and the torsion spring located on the rocker arm moves it into the laundry position is brought.

However, this device has the disadvantage that the fixedly arranged bearings of the rocker arm as well as the pivotable run-up surface a relatively large distance between the folding bridge and the conveyor belts requires and at the same time requires a non-changeable approach angle

Another disadvantage is also to be seen in the fact that the stationary stop that is used with The laundry item is clamped when the clamping plate is swiveled into a steeper position, resulting in a delay of the Items of laundry cannot be excluded, which ίο inevitably leads to an inadequate folding leads.

On the other hand, the device has a large number

of stops as well as pawls and clamping plates actuated by torsion springs. Leave these components

! 5 however, a largely silent mode of operation of the folding device hardly.

Furthermore, due to the large number of parts that are necessary to achieve a steeper position of the clamping plate, a relatively high effort in production and maintenance is required.

The invention is therefore based on the object of specifying a folding device with a simple structure which works quietly, with the emergence of the leading edge of the item of laundry is to take place in a flat position on the folding flap, as well as sliding off the starting edge of the item of laundry should be done in a steeper position of the folding flap to avoid the delay the starting edge of the laundry item.

In a device of the generic type, the object is achieved by the characterizing features of patent claim solved

The solution according to the invention makes it possible to that the device for folding operates quietly and a distortion of the starting edge of the textile fabric is avoided when pivoting the folding flap into a steeper position. On the other hand, there will be a low Reached overall height of the entire device.

The invention will be explained in more detail below using an exemplary embodiment. The drawing shows

Fig. 1 is a schematic representation of the folding device, with the folding flap in the laundry opening position,

F i g. 2 a schematic representation of the folding device, with the item of laundry between the folding flap and is clamped to the stop,

F i g. 3 a schematic representation of the folding device, the folding flap at an angle of inclination to the conveying plane occupies

so F i g. 4 Scheme; ical representation of the folding device, with the folding flap in the laundry waste position.

The device for folding is located above the conveyor belts 1 in a folding bridge 2, the Folding bridge 2 is fixed laterally by walls 3 on the machine frame, not shown.

In the folding bridge 2 there is a suspension 4 for a working cylinder 5. The piston rod 6 of the The working cylinder 5 is connected to a lever 7. This lever 7 is with a square shaft 8. which is rotatably mounted in the bearing point 9. rigid tied together. The bearing point 9 is located on the underside of the drawbridge 2.

Another lever 10 is rigid on the Vicrkantwelle 8 attached, as a suspension for the working cylinder 11 serves. Furthermore, on the square shaft 8 there is a support arm 12, the end of which is angled and this Has a bearing 13 at the end. This bearing 13 j

Serves to accommodate a square shaft 14. On this Square shaft 14 are once a lever 15 with a receiving pin 16 for the piston rod 17 of the working cylinder 11 and on the other hand the folding flap 18 is arranged.

The square shaft 8 has a secure clamping and holding of the leading edge of the item 19 an elastic stop 20, which consists for example of a rubber profile

To initiate the folding process are in front of the FaItbrücke 2 and in the area of the folding flap 18 scanning elements 21, 22 for scanning the beginning and end edges of the respective item of laundry 19 arranged

To ensure that the leading edge of the item of laundry emerges safely 19 to reach the folding flap 18 are in the direction of movement of the conveyor belts 1 in front of the Folding flap 18 overrun aids 23 are arranged.

Furthermore, a nozzle provided with nozzles is located in front of and above and parallel to the front edge of the folding flap 18 Tube 24 which is attached to the folding bridge 2.

In the case of the casserole of the item of laundry 19 on the drop flap 18, the light beam of the discharge element 21 is interrupted and thus via a not shown Control device of the working cylinder 11 with compressed air acted upon As a result, the moving piston rod 17 moves the lever 15, whereby the on the square shaft 14 pivots upwardly and the front edge of the item 19 of laundry is clamped between the stop 20 and the folding flap 18.

The continuous movement of the conveyor belt 1 causes the laundry to move on 19 in the conveying direction, so that a fold is formed. Compressed air is used to support this process from the nozzles of the tube 24, which blows into the 3s fold of laundry that is forming

After the starting edge of the item 19 is clamped between the stop 20 and the folding flap 18 the working cylinder 5 is acted upon with compressed air. This leads to the extending piston rod 6, which is mounted on the lever 7, a rotation of the square shaft 8 and thus the Elements arranged on the square shaft 8 (lever 10, working cylinder 11, support arm 12, square shaft 14, Bearing 13, lever 15, folding flap 18 and stop 20) caused by this work cycle changes the Angle of the folding flap 18 to the conveyor belt 1. The folding flap 18 now assumes a steeper position.

After the end edge of the item of laundry 19 to be folded has released the light beam from the scanning element 22 has, the working cylinder U is relaxed or acted upon in opposite directions with compressed air, so that the folding flap 18 pivots downwards and thus the leading edge of the item 19 is exposed. she falls on the end edge of the item of laundry, so that the folding process is finished. About a not shown Delay element brings the folding device back into the laundry position in which the working cylinder 5 is relaxed or acted upon with compressed air in opposite directions.

The actuation of the working cylinder 5; 11 required control and regulation devices were up to with the exception of the scanning members 21; 22 not shown.

For this purpose 4 sheets of drawings

Claims (1)

Claim: Device for folding textile fabrics with at least one folding flap arranged above a conveyor, at least one stop and at least one working cylinder through which the folding flap from a position receiving the front edge of the textile fabric into a position that clamps this front edge between the stop and the folding flap and then the The front edge of the textile fabric can be swiveled in a controlled manner, the folding flap being movable from a flat opening position into a steeper position which favors the sliding of the front edge of the item of laundry, characterized in that the working cylinder (11) actuating the folding flap (18) and the stop (20) is arranged pivotably about a common pivot point (8; 9), the pivot point (8; 9) being designed as an eks mounted square shaft (8) on which the bearing (12: 13) of the folding flap (18) is supported by a Support arm (12) and a receptacle (10) for the working cylinder (U; 17) and the stop (20) are rigidly attached, as well as that the pivoting movement around the pivot point (8; 9) by at least one working cylinder (5) attached to a folding bridge (2), the piston rod (6) of which is rigidly connected to the square shaft (8) connected lever (7) acts, can be reached in a controlled manner