DD143277A1 - INTAKE FIELD - Google Patents

Description

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Title of the invention; inlet box

Field of application of the invention:

The invention relates to a textile finishing machine for the treatment of wide-guided V / arenbahnen, which is associated with an inlet field, in which the web-shaped material passing means such as tensioning chains and fed through this the treatment room of the machine ·

Characteristic of the known technical solutions:

In inlet fields of textile finishing machines, the ·. Problem to eliminate the slack of the transferred V / arenbahn the transport field in the area of the inlet field to avoid quality damage to the web »These mechanical devices such as Spannfäderi or follower endless (drag bands are known, but in turn are associated with significant problems ·

It is therefore already known an inlet field for a textile finishing machine, in the area of a spatially completed, resting directly below the web air cushion extends, which has a small, according to the passage of the fabric controllable overpressure · This air cushion is up through the V / down through the ground and laterally through to the

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Bottom-reaching, connected to the width adjustment sidewalls completed. The conclusion of the front sides of the inlet field is carried by the treatment room itself and by a up to the maximum adjustment width of the guide rails for the transport and about to the height of the V / arenbahn over Plur extending fixed front wall.

This PoX ¹ Dl blocking the dormant air cushion by the fixed front wall is disadvantageous «

The expansion of the guide rails caused by a heat treatment of the yarn path taking place in the treatment space of the textile finishing machine must be absorbed in the inlet field. This change in length can be up to 60 mm in the case of currently customary machines. "It is therefore necessary to maintain a relatively large distance between the fixed front wall and the movable head pieces. In addition, there is a safety distance to ensure the pivoting movements of the head pieces inwards and outwards for the purpose of positionally correct transfer of the web to the means of transport.

Another disadvantage of the fixed front wall is the obstruction of the operator during manual retraction of Y / arenbahn in the inlet unit at the beginning of the Behandlungsprozesses.- The time required and a certain risk of accidents are increased by the cramped space. Particularly obstructive acts the fixed front wall, if for the purpose of universal use for different webs or process technologies in the inlet unit additionally adjustable units such as pivot rollers or weft straightening devices with moving in different planes rolls u. Ä. Are arranged. Then the collection of the web within the inlet unit can have many variants, so that can be found no adapted to the respective collection of the web optimal arrangement of the fixed front wall. The barrier of the dormant air cushion at this end of the

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Inlet field can thus be subject to such losses that the effect of the air cushion is significantly impaired.

Aim of the invention;

The object of the invention is to produce an air cushion in the inlet field of a textile finishing machine and to maintain it with the least possible losses.

Explanation of the essence of the invention;

It is an object of the invention to provide a device for an inlet panel of a textile finishing machine, which allows regardless of the particular design of the inlet unit and the head pieces the generation and low-loss maintenance of the web in the inlet field relieving air cushion.

According to the invention, this object is achieved in that are arranged at the deflection of the transport forming head pieces of the guide rails for the transport air supply chambers with the contours of the head pieces adapted air outlet openings and that required to maintain the air cushion air from these air outlet openings in the form of a contiguous air curtain at an angle Direction to the machine center is blown against the guided in the inlet unit web. The air supply chambers are arranged according to the invention at the machine center facing sides of the head pieces.

According to a preferred embodiment of the invention, the air inlet openings are combined into substantially uninterrupted slots.

The air supply to the air supply chambers according to the invention is carried out by a respective associated fan, which is arranged on the device carrying the respective head piece. On

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A significant advantage of the device according to the invention is that the web within the inlet unit is simultaneously used as the front boundary of the air cushion. It eliminates any mechanical means of isolation in the area concerned. The attachment of the air supply chambers to the headers guarantees independence from the respective adjustment width of the guide rails and the headers * Disabilities or difficulties for the operator are excluded. The attachment of the air supply chambers to the machine center facing sides of the headers ensures that no additional space is required in the width of the inlet panel.

The gap existing between the headers and the web carried in the inlet unit, which is different in width depending on the shape of the headers, the formation of the inlet unit and the respective longitudinal extent of the guide rails, is shut off by the air supplied from the air supply chambers Air outlet openings blown air curtain, which is directed obliquely in the direction of the machine center on the guided in the inlet unit web _v so that he hits them with certainty and can not pass outside the web edge or can displace the web edge.

Furthermore, it is advantageous that the fans supplying the air supply chambers to the devices carrying the headers, d. H. So to arrange on the respective side walls. The air supply chambers and the fans then necessarily follow as a unit of the respective adjustment width of the guide rails or the side walls.

In the following the invention will be explained with reference to an embodiment

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It shows

Fig. 1 is a side view of the erfindiingsgemäßen device according to the section line I- I in Pig. 2 and

Pig. 2 shows a cross section corresponding to the section line II-II in Pig. 1.

In the side view after Pig. 1, a web 1 is shown, which is passed in wide Porm on guide rollers 2, spreading rollers 3 and feed rollers 4 within an inlet unit 5 of an inlet panel 6 via a Kantenausrolleinrichtung 7 from the feed unit 8 the tensioning chains 9. The tension chains slide in the guide rails 10, which are connected to the head piece.

The guided into the treatment room 12 web 1 closes the inlet panel 6 upwards from. The lateral termination is carried out in a known manner by attached to the guide rails 10, reaching almost to the bottom side walls 13, while at the front end of the inlet panel 6, a partial conclusion by a arranged below the head pieces 11, from the bottom to almost reaching this herring reaching front wall 14 takes place.

In this so limited space of the inlet panel 6 extends in a known manner a resting directly below the web 1 air cushion 15, which has the task to equalize the sag of the web 1 within the inlet field. The air cushion 15 has a small, according to the sag of the web 1 adjustable overpressure.

At the machine center 16 facing sides of the head pieces 11 air supply chambers 17 are arranged, which are each supplied by a mounted in the side wall 13 fan 18 with air. The supplied amount of air can be seen by a zv <ii see the fan 18 and the air supply chamber

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seen throttle valve 19 are designed to be variable and corresponds to the required due to Abstandströmverlusten and changes in the sag of the web 1, for maintaining the air cushion 15 required amount of air. The air supply chambers 17 have a number of air outlet openings * whose obliquely directed in lease of the machine center 16 on the guided in the inlet unit 5 web 1 blow-out 20 a continuous air curtain

21 result. This prevents leakage of air from the air cushion 15 by the free space between the headers 11 and the inlet unit 5 ·

Preferably, the Luftaustrittsoffnungen are as in the present example to a substantially uninterrupted slot

22 united. This allows a very efficient production of the air supply chambers 17 and an immediate emergence of a contiguous air curtain 21 during the blow-out.

The direction of the Ausblasstrahlen 20 and thus also the slope of the air curtain 21 can be influenced by appropriate choice of the dimensions a and b and can be adapted to the various requirements · In addition, the slope of the air curtain 21 can be set so that taking advantage of the Injektorprinzips air the external environment of the inlet field is sucked with.

Claims (1)

^: indefinitely ; _r 1 · inlet panel for a textile finishing machine, to which the fabric web is fed via an inlet unit consisting of a plurality of guide, directional, spreading and / or feed rollers, and in which the air cushion of the slack-free guide between endless transport means, such as Madel or Kluppenketten spread Y / arenbahn serves and relative to the environment is essentially complete, characterized in that at the deflection of the transport means (9) forming head pieces (11) of the guide rails (10) for the transport (9) Luftzuführkamraern (17) with the Contours of the head pieces (11) adapted air outlet openings are arranged, and in that the air cushion for maintaining the air cushion (15) required air from these air outlet openings in the form of a continuous air curtain (21) obliquely towards the machine center (16) against the in the inlet unit (5). guided web (1) is blown · 2β inlet panel according to item 1, characterized in that the air supply chambers (17) on the machine center (16) facing side of the head pieces (11) are arranged · 3 · inlet panel according to points 1 and 2, characterized in that the air outlet openings are united into essentially uninterrupted slots (22) · 4 · inlet field according to points 1 to 3, characterized in that the air supply of the air supply chambers (17) by a respective associated fan (18) which is arranged ah of the respective head piece (11) supporting device Z ... pages drawings