EP0021450B1 - Pressure feeding device for an apparatus for continuously crumpling a fabric - Google Patents

Pressure feeding device for an apparatus for continuously crumpling a fabric Download PDF

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Publication number
EP0021450B1
EP0021450B1 EP80103689A EP80103689A EP0021450B1 EP 0021450 B1 EP0021450 B1 EP 0021450B1 EP 80103689 A EP80103689 A EP 80103689A EP 80103689 A EP80103689 A EP 80103689A EP 0021450 B1 EP0021450 B1 EP 0021450B1
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EP
European Patent Office
Prior art keywords
stuffing
ring
compression tube
press ring
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80103689A
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German (de)
French (fr)
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EP0021450A1 (en
Inventor
Klaus Günter Kühn
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Edelmann Maschinenfabrik & Co KG GmbH
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Edelmann Maschinenfabrik & Co KG GmbH
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Publication of EP0021450A1 publication Critical patent/EP0021450A1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C23/00—Making patterns or designs on fabrics
    • D06C23/04—Making patterns or designs on fabrics by shrinking, embossing, moiréing, or crêping

Definitions

  • the invention relates to a press-in device for a continuously operating crushing plant for web material with a compression tube, the axis of which extends in a straight line in its initial region and into which the web material formed into the strand is pressed, according to the preamble of claim 1.
  • Crushing systems serve to provide web material, in particular textile material, and in particular velor and velvet, with preferably permanent crease folds, in order to give the web material a special appearance and increased sensitivity to use.
  • the web material formed into a strand is pressed into and through the compression tube, which is perforated and runs through a trough guided with heated water.
  • the web material is folded arbitrarily in the upsetting tube. Due to the high temperature of the water in the tub, the web material assumes the folds which are fixed in a second tub filled with cold water, through which the web material is guided following the first tub.
  • a press-in device for pressing the web material into the upsetting pipe, which has a pair of delivery rollers and a short pipe socket arranged behind the pair of delivery rollers in the direction of movement of the strand.
  • the strand runs through the pair of delivery rollers and the pipe socket.
  • the unit consisting of the pair of delivery rollers and the pipe socket is pushed back and forth in the direction of the straight axis of the compression tube, as a result of which the strand is to be compressed in the compression tube.
  • This known press-in device has the disadvantage that there is a risk that the web material is already jammed immediately behind the pair of delivery rollers, so that the material wraps around the delivery rollers and cannot be conveyed further by them. This in turn forces unwanted business interruptions.
  • a press-in device with the features of the preamble of claim 1 is known from US-A3987519.
  • the upsetting tube of which is extended beyond its inlet opening and the retaining device the retaining device consists of a ring fixed to the device at the inlet opening of the upsetting tube, which carries projections directed radially inwards and towards the inside of the upsetting tube, which are designed as needles.
  • the press ring has similar projections.
  • the projections or needles of the retaining device should engage in the web material and prevent the web material from being withdrawn from the upsetting tube during the return of the press ring.
  • This known press-in device has the disadvantages that the projections or needles can damage the web material and since not all the material that is taken from the press ring in the direction of the inner dead center is also pressed into the compression tube, because the web material at least partially only between that Press ring and the retaining device is pressed together and is not conveyed past the retaining device.
  • the invention has for its object to provide a generic press-in device that works as trouble-free as possible and treats the web material gently.
  • the retaining device is designed as a clamping device which has at least two movable clamping jaws, the clamping surfaces of which face one another and limit the passage opening, the clamping jaws scraping web material from the outside during the return of the press ring and reducing the passage opening to such an extent that the web material is jammed between them.
  • the strand runs through the opening of the press ring and the clamping device into the compression tube. While the press ring is at its outer dead center, the passage opening of the clamping device is closed to such an extent that it clamps the strand.
  • the diameter of the opening of the press ring is matched to the thickness of the strand so that the strand does not slide through the opening of the press ring while the press ring is moving from its outer dead center towards its inner dead center.
  • the clamping device closes as soon as the press ring has passed the clamping device, so that the clamping device then holds the strand and the strand slides through its opening during the further return of the press ring. Then a new work cycle of the press-in device begins.
  • the press-in device according to the invention it is ensured that the strand is not can get caught on the press ring, since the clamping device holds the strand during the second section of the return of the press ring, so that the strand is tensioned between the press ring and the clamping device.
  • the press-in device according to the invention thus works extremely reliably and trouble-free.
  • Another advantage of the press-in device according to the invention is that the path length transported per work cycle of the press-in device is precisely defined because it is equal to the length of the stretched strand section between the clamping device and the press ring at its outer dead center. As a result, the crumple effect is very uniform over the entire length of the continuously processed strand.
  • the press ring takes the strand of the web material with it by static friction during its advance, the press ring also being toroidal on its side facing the compression tube, so that the web material is protected.
  • the diameter of the opening of the press ring must be adapted to the thickness of the strand. If this diameter is too large in relation to the strand thickness, the strand can slide through the opening of the press ring when it is advanced so that the press ring does not take the strand with it.
  • exchangeable press rings with different diameters are preferably provided.
  • the diameter of the opening of the press ring can be changed, the opening being preferably delimited by an elastic section of the press ring and a gas pressure chamber surrounding the elastic section being formed in the press ring, in which the gas pressure can be adjusted.
  • the elastic section is more or less deflected radially inwards, so that the diameter of the opening depends on the gas pressure.
  • the press ring must be pressed into the compression tube.
  • a support tube is preferably provided, which is displaceably guided along the straight axis of the compression tube and coaxially supports the compression ring at its end facing the compression tube.
  • the support tube has smooth inner and outer sides, so that there is no risk that the web material passed through the support tube and the press ring and the web material already compressed in the compression tube get stuck on the support tube.
  • the displacement of the press ring takes place by means of any suitable device which can move the press ring back and forth between its two dead centers.
  • a crank gear driven by an electric motor is suitable for this purpose, which converts the rotary movement of the electric motor into a linear movement of the head of a crank loop, which acts on the press ring or - if a support tube is provided - on the latter.
  • the displacement of the press ring can also be effected by means of a pneumatic cylinder, the piston rod of which acts on the press ring or on the support tube.
  • the stroke of the crank mechanism or the pneumatic cylinder is preferably adjustable so that the outer dead center of the press ring is different depending on the stroke length set.
  • the path length transported with each work cycle or stroke and, in turn, the formation of folds can also be set: Short path length per stroke, ie. H. Small distance between the outer dead center and the clamping device results in smaller crumple folds, and a larger distance between the clamping device and the outer dead center results in coarser and larger crumple folds.
  • the clamping jaws can each be pivoted about a bearing point fixed to the device and can be loaded by at least one spring such that they are pressed elastically towards one another.
  • the clamping jaws On their sides facing away from the compression tube, the clamping jaws preferably form a concave surface which is adapted to the convex side of the compression ring facing the compression tube.
  • the jaws constantly assume their clamping position unless the press ring or its support tube is arranged between them.
  • the jaws are pressed apart during the advance by the press ring and the strand section compressed by it against the force of the spring or springs and automatically return to their clamped position after the press ring has passed them on its return.
  • This training is characterized by particular simplicity and reliability.
  • delivery rollers are preferably arranged in the transport direction of the web material in front of the press ring, which feed the web material from the template to the press ring. This relieves the pressure ring of the task of pulling the web material off the template.
  • the delivery rollers are driven intermittently during the advance of the press ring, in such a way that they promote the web length pressed into the upsetting cylinder per work cycle.
  • FIG. 1 is first dealt with.
  • the crumple system shown therein comprises a press-in device provided with the reference number 10, which will be explained in more detail with reference to FIG.
  • the upsetting pipe 14 is perforated and passed through a water bath contained in a tub 16.
  • the water bath has a temperature of approximately 100 ° C.
  • the crumpled folds of the web material compressed in the compression tube 14 are pre-fixed due to the high temperature of the water bath.
  • the strand 12 emerges from the upset tube bent upward at its end and the water bath, after which the strand passes through a first pair of squeeze rollers 18.
  • the strand passes through a cold water bath contained in a second trough 20, by means of which the wrinkles are subsequently fixed. After leaving the cold water bath, the strand 12 runs through a second pair of squeeze rollers 22. After leaving the second pair of squeeze rollers 22, the web material has permanent wrinkles and is fed to any further processing.
  • the press-in device 10 Since the invention relates to the press-in device 10, the remaining configuration of the crumple system is not essential to the invention. The above brief explanation of the remaining crumple system therefore only gives an example of a possible configuration of the crumple system, and the press-in device 10 according to the invention can also be used in conjunction with crumple system other than that described, provided the crumple system has a compression tube, the axis of which is in its initial region runs straight.
  • Figure 2 shows schematically and in more detail the press-in device 10, the strand 12 and the frame of the press-in device not being shown.
  • the initial region of the upsetting tube 14 is shown in FIG.
  • the upsetting tube provided with numerous holes 24 has a straight axis.
  • two guide rods 28 are arranged fixed to the device, of which only one guide rod is shown in FIG.
  • a cylindrical support tube 30 is guided on the guide rods 28 with the aid of guide bushes, not shown.
  • the axis of the cylindrical support tube 30 coincides with the straight axis of the upsetting tube 10.
  • the cylindrical support tube 30 has smooth inner and outer sides and has a funnel-shaped inlet opening 32 at its left end in FIG. 2. At its end facing the compression tube 14, the right end in FIG. 2, the support tube 30 carries a press ring 34.
  • This press ring 34 is at least on its outside, ie. H. its side facing the upsetting tube, is toroidal and has on its outer circumference a shoulder on which the right end of the support tube 30 in FIG. 2 rests.
  • the press ring 34 merges flush with the support tube 30 on the outside. It is detachably fastened to the support tube 30 by means of fastening means, not shown.
  • a circular opening 36 is formed, which lies in a plane perpendicular to the direction of movement of the support tube 30 and the center of which is arranged on the straight axis of the compression tube 14 and the support tube 30.
  • the press ring 34 By moving the support tube 30, the press ring 34 is displaced between an outer dead center shown in solid lines in FIG. 2 and an inner dead center, at which the press ring is arranged within the compression tube 14.
  • the contour of the press ring and the front end of the support tube 30 is shown as a dashed curve 38 in Figure 2.
  • the displacement of the support tube 30 and the press ring 34 is effected in the illustrated embodiment by a pneumatic cylinder 40 shown broken off in FIG. 2, which is arranged fixed to the device and whose piston rod 42 is connected to the support tube 30 via an arm 44.
  • any other suitable drive device can also be provided, which makes it possible to move the press ring 34 back and forth in a straight line between its two dead centers.
  • a crank gear driven by an electric motor is also suitable for this.
  • the cycle number of the cylinder 40 i. H. the number of work cycles per unit of time, and the stroke of the cylinder 40 are adjustable, but the inner dead center of the press ring 34 is not changed, but only the outer dead center is adjusted, namely brought at a coarser or smaller distance from the inlet opening 26 of the compression tube 14 becomes.
  • a clamping device 46 is arranged directly in front of the inlet opening 26 of the upsetting pipe 14.
  • this clamping device 46 comprises two clamping jaws, namely an upper clamping jaw 48 and a lower clamping jaw 50.
  • the clamping device can also have more than two clamping jaws, for example four clamping jaws.
  • Each jaw has a clamping surface 52 or 54.
  • the clamping surfaces 52 and 54 face each other and, in the state shown in FIG. 2, abut one another, so that the passage opening of the clamping device 46 delimited by the two clamping surfaces 52 and 54 is completely closed.
  • the sides of the clamping jaws 48 and 50 facing away from the upsetting tube 14 form a concave surface 56 which, in the exemplary embodiment shown, has a nap-shaped design.
  • This cup-shaped surface 56 is smooth and the compression ring 34 at its outer dead center turns.
  • Each jaw 48 and 50 is each attached to a lever 58 which is pivotable about a bearing point 60 fixed to the device.
  • the bearing points 60 are located on the side of the clamping jaws 48 and 50 facing away from the upsetting tube 14, so that the clamping jaws can pivot away from one another and thereby enlarge the passage opening of the clamping device when pressure is exerted on the surface 56.
  • the clamping device 46 and its distance from the entry opening 26 are dimensioned such that the passage opening can be opened at least to such an extent that the support tube 30 with the press ring 34 can be moved through the passage opening into the compression tube 14. Taking this condition into account, the clamping device 46 is arranged as close as possible to the upsetting pipe 14.
  • a spring 62 designed as a tension spring acts on each lever 58 and is suspended at its other end on an adjustable spring seat 64, by means of which the spring force can be adjusted.
  • the springs 62 elastically press the clamping jaws 48 and 50 towards one another, so that the clamping device 46 assumes the position shown in FIG. 2 in the idle state and the clamping jaws can be pressed apart against the forces of the springs 62.
  • the clamping force exerted by the clamping surfaces 52 and 54 can be adjusted by means of the adjustable spring seats 64.
  • delivery rollers 68 are rotatably mounted in a frame 66 fixed to the device.
  • the straight axis of the upsetting tube 14 and the support tube 30 runs through the nip of these delivery rollers.
  • the gap width of the delivery rollers 68 is adjustable and the delivery rollers can be driven in a controlled manner by a drive device, not shown.
  • the delivery rollers are driven intermittently during the advance of the press ring 34 from its outer dead center to its inner dead center, the delivery rollers 68 in each case conveying exactly the length of the web which is pressed by the press ring 34 into the upsetting cylinder 14 during each working cycle.
  • two lateral guide rollers are rotatably arranged on the frame 66, of which only one guide roller 70 is shown in FIG.
  • the axes of the guide rolls are perpendicular to the axes of the delivery rolls 68.
  • the mode of operation of the press-in device 10 described above is explained below.
  • the strand 12 not shown in FIG. 2 runs through the nip of the delivery rollers 68, the support tube 30, the opening 36 of the press ring 34, the through opening of the clamping device 46 and into the compression tube 14.
  • the gap width of the delivery rollers 68 is adapted to the strand thickness that the strand 12 is reliably promoted.
  • a press ring 34 is inserted with such a diameter of its opening 36 that the static friction between the press ring 34 and the strand is on the one hand so great that the press ring 34 entrains the strand during its advancement without the strand through the press ring 34 (to the left in Figure 2) slides back, and on the other hand is so small that the strand when the press ring 34 returns, can slide through it and be held by the clamping device 46.
  • the spring force of the springs 62 is set so that the clamping jaws 48 and 50 still reliably clamp the strand while the press ring runs back from the clamping device 46 to its outer dead center.
  • the number of cycles and stroke are set, a change in the stroke of the cylinder 40 only resulting in a change in the position of the outer dead center of the press ring 34, but not its inner dead center.
  • the position of the outer dead center determines the length of the strand section between the clamping device 46 and the press ring 34 at its outer dead center. This length influences the formation of wrinkles in such a way that longer lengths lead to coarser folds and smaller lengths lead to finer wrinkles.
  • the conveying speed of the web material and thus also the dwell time of the same in the water bath in the tub 16 are determined by the number of cycles and the stroke of the cylinder 40.
  • the elements of the press-in device assume the position shown in FIG. 2, although it must be taken into account that the strand runs through the press-in device 10 in the manner described above.
  • the strand is slightly stretched between the clamping device 46 and the press ring 34.
  • the strand lies loosely in the support tube 20.
  • the strand section between the press ring 34 and the clamping device is compressed and compressed.
  • the pressure exerted by the press ring 34 on the compressed strand section on the surface 56 becomes so strong that the clamping jaws 48 and 50 pivot about their bearing points 60 against the spring forces of the springs 62 and the press ring 34 pushes the compressed section through the passage opening of the clamping device and can press the inlet opening 26 of the compression tube 14 into the compression tube 14.
  • the support tube 30 also passes through the clamping device 46. In the upsetting tube 14, the strand already present there is pushed further by the strand section additionally conveyed into the upsetting tube in this work cycle.
  • the press ring 34 then begins its return.
  • the strand section last pressed into the compression tube 14 relaxes somewhat, while the press ring 34 the material clamped in its opening 36 is initially carried without sliding.
  • the jaws 48 and 54 slide over the outside of the support tube 30 and the press ring 34 until finally the surface 56 of the clamping device and the outside of the press ring 34 are in contact and the jaws 48 and 50 can increasingly approach each other .
  • the clamping jaws 48 and 50 thereof strip off any material possibly lying on the outside of the press ring 34 from the press ring.
  • the passage opening of the clamping device 46 is finally closed to such an extent that the clamping surfaces 52 and 54 clamp the strand directly behind the press ring 34, ie to the right of this in FIG. 2.
  • the strand slides through the opening 36 of the press ring 34, the strand being slightly tensioned between the clamping device and the press ring 34.
  • the length of the strand section sliding until the outer dead center is reached by the press ring 34 is the web length conveyed and pressed in per working cycle of the press-in device and is replenished by the delivery rollers 68 during the advance of the press ring 34.
  • the delivery rollers 68 can also work continuously if the storage space between the press ring 34 and the delivery rollers 68 is sufficient to hold the continuously conveyed web material.

Description

Die Erfindung bezieht sich auf eine Einpreßvorrichtung für eine kontinuierlich arbeitende Knautschanlage für Bahnmaterial mit einem Stauchrohr, dessen Achse in seinem Anfangsbereich geradlinig verläuft und in das das zum Strang geformte Bahnmaterial eingepreßt wird, gemäß dem Oberbegriff von Anspruch 1.The invention relates to a press-in device for a continuously operating crushing plant for web material with a compression tube, the axis of which extends in a straight line in its initial region and into which the web material formed into the strand is pressed, according to the preamble of claim 1.

Knautschanlagen dienen dazu, Bahnmaterial, insbesondere textiles Material und dabei wiederum insbesondere Velours und Samt, mit vorzugsweise permanenten Knautschfalten zu versehen, um dem Bahnmaterial ein besonderes Aussehen und erhöhte Gebrauchsunempfindlichkeit zu verleihen. Bei einer kontinuierlich arbeitenden Knautschanlage mit einem Stauchrohr wird das zum Strang geformte Bahnmaterial in und durch das Stauchrohr gepreßt, das perforiert ist und durch eine mit erwärmtem Wasser geführte Wanne verläuft. Im Stauchrohr ist das Bahnmaterial willkürlich gefaltet. Aufgrund der hohen Temperatur des Wassers in der Wanne nimmt das Bahnmaterial die Falten an, die in einer zweiten, mit kaltem Wasser gefüllten Wanne fixiert werden, durch die das Bahnmaterial im Anschluß an die erste Wanne geführt wird.Crushing systems serve to provide web material, in particular textile material, and in particular velor and velvet, with preferably permanent crease folds, in order to give the web material a special appearance and increased sensitivity to use. In a continuously operating crushing plant with a compression tube, the web material formed into a strand is pressed into and through the compression tube, which is perforated and runs through a trough guided with heated water. The web material is folded arbitrarily in the upsetting tube. Due to the high temperature of the water in the tub, the web material assumes the folds which are fixed in a second tub filled with cold water, through which the web material is guided following the first tub.

Zum Einpressen des Bahnmaterials in das Stauchrohr ist bereits eine Einpreßvorrichtung bekannt, die ein Lieferwalzenpaar sowie einen kurzen, in Bewegungsrichtung des Stranges hinter dem Lieferwalzenpaar angeordneten Rohrstutzen aufweist. Der Strang verläuft durch das Lieferwalzenpaar und den Rohrstutzen. Die Einheit aus Lieferwalzenpaar und Rohrstutzen wird in Richtung der geradlinigen Achse des Stauchrohres hin- und hergeschoben, wodurch der Strang im Stauchrohr gestaucht werden soll. Diese bekannte Einpreßvorrichtung hat den Nachteil, daß die Gefahr besteht, daß sich das Bahnmaterial bereits unmittelbar hinter dem Lieferwalzenpaar staut, so daß sich das Material um die Lieferwalzen legt und von diesen nicht weitergefördert werden kann. Dies wiederum zwingt zu ungewollten Betriebsunterbrechungen.A press-in device is already known for pressing the web material into the upsetting pipe, which has a pair of delivery rollers and a short pipe socket arranged behind the pair of delivery rollers in the direction of movement of the strand. The strand runs through the pair of delivery rollers and the pipe socket. The unit consisting of the pair of delivery rollers and the pipe socket is pushed back and forth in the direction of the straight axis of the compression tube, as a result of which the strand is to be compressed in the compression tube. This known press-in device has the disadvantage that there is a risk that the web material is already jammed immediately behind the pair of delivery rollers, so that the material wraps around the delivery rollers and cannot be conveyed further by them. This in turn forces unwanted business interruptions.

Ferner ist eine Einpreßvorrichtung mit den Merkmalen des Oberbegriffs von Anspruch 1 aus der US-A3987519 bekannt. Bei dieser bekannten Einpreßvorrichtung, deren Stauchrohr über dessen Eintrittsöffnung und die Rückhalteeinrichtung hinaus verlängert ist, besteht die Rückhalteeinrichtung aus einem vorrichtungsfest an der Eintrtttsöffnung des Stauchrohres angeordneten Ring, der radial nach innen und in Richtung zum Stauchrohrinneren gerichtete Vorsprünge trägt, die als Nadeln ausgebildet sind.Furthermore, a press-in device with the features of the preamble of claim 1 is known from US-A3987519. In this known press-in device, the upsetting tube of which is extended beyond its inlet opening and the retaining device, the retaining device consists of a ring fixed to the device at the inlet opening of the upsetting tube, which carries projections directed radially inwards and towards the inside of the upsetting tube, which are designed as needles.

Ähnlich Vorsprünge trägt auch der Preßring. Die Vorsprünge bzw. Nadeln der Rückhalteeinrichtung sollen in das Bahnmaterial eingreifen und während des Rücklaufs des Preßrings verhindern, daß das Bahnmaterial aus dem Stauchrohr zurückgezogen wird. Diese bekannte Einpreßvorrichtung hat die Nachteile, daß die Vorsprünge bzw. Nadeln das Bahnmaterial beschädigen können und da nicht all das Material, das vom Preßring in Richtung zum inneren Totpunkt mitgenommen wird, auch in das Stauchrohr gedrückt wird, weil das Bahnmaterial zumindest teilweise lediglich zwischem dem Preßring und der Rückhalteeinrichtung zusammengedrückt wird und nicht an der Rückhalteeinrichtung vorbeigefördert wird. Dies führt dazu, daß die je Arbeitsspiel der Einpreßvorrichtung transportierte Bahnlänge von Arbeitsspiel zu Arbeitsspiel unterschiedlich sein kann und daß es sogar zu einem Materialstau im Bereich zwischen dem Preßring und der Rückhalteeinrichtung kommen kann, was wiederum eine Betriebsunterbrechung erforderlich machen würde.The press ring has similar projections. The projections or needles of the retaining device should engage in the web material and prevent the web material from being withdrawn from the upsetting tube during the return of the press ring. This known press-in device has the disadvantages that the projections or needles can damage the web material and since not all the material that is taken from the press ring in the direction of the inner dead center is also pressed into the compression tube, because the web material at least partially only between that Press ring and the retaining device is pressed together and is not conveyed past the retaining device. This leads to the fact that the web length transported per work cycle of the press-in device can differ from work cycle to work cycle and that there can even be a material jam in the area between the press ring and the retaining device, which in turn would necessitate an interruption in operation.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Einpreßvorrichtung zu schaffen, die möglichst störungsfrei arbeitet und das Bahnmaterial schonend behandelt.The invention has for its object to provide a generic press-in device that works as trouble-free as possible and treats the web material gently.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Rückhalteeinrichtung als Klemmeinrichtung ausgebildet ist, die zumindest zwei bewegbare Klemmbacken aufweist, deren einander zugewandten Klemmflächen die Durchtrittsöffnung begrenzen, wobei die Klemmbacken während des Rücklaufs des Preßrings Bahnmaterial von dessen Außenseite abstreifen und die Durchtrittsöffnung soweit verkleinern, daß das Bahnmaterial zwischen ihnen eingeklemmt ist.This object is achieved in that the retaining device is designed as a clamping device which has at least two movable clamping jaws, the clamping surfaces of which face one another and limit the passage opening, the clamping jaws scraping web material from the outside during the return of the press ring and reducing the passage opening to such an extent that the web material is jammed between them.

Bei der erfindungsgemäßen Einpreßvorrichtung verläuft der Strang durch die Öffnung des Preßringes und die Klemmvorrichtung hindurch in das Stauchrohr. Während sich der Preßring an seinem äußeren Totpunkt befindet, ist die Durchtrittsöffnung der Klemmeinrichtung so weit geschlossen, daß sie den Strang einklemmt. Der Durchmesser der Öffnung des Preßringes ist so auf die Dicke des Stranges abgestimmt, daß der Strang nicht durch die Öffnung des Preßrings gleitet, während sich der Preßring von seinem äußeren Totpunkt in Richtung zu seinem inneren Totpunkt bewegt. Während dieses Vorlaufes des Preßringes wird zunächst der Strangabschnitt zwischen dem Preßring und der Klemmeinrichtung gestaucht. Spätestens dann, wenn der Preßring und der von ihm gestauchte Strangabschnitt die Klemmeinrichtung erreichen, wird diese so weit geöffnet, daß der Preßring durch die Klemmeinrichtung hindurchtreten kann und dabei den gestauchten Strangabschnitt durch die Klemmeinrichtung und die Eintrittsöffnung des Stauchrohres hindurch in das Stauchrohr preßt. Während des Rücklaufes des Preßringes schließt die Klemmeinrichtung, sobald der Preßring die Klemmeinrichtung passiert hat, so daß dann die Klemmeinrichtung den Strang festhält und der Strang während des weiteren Rücklaufes des Preßringes durch dessen Öffnung gleitet. Danach beginnt ein neues Arbeitsspiel der Einpreßvorrichtung.In the press-in device according to the invention, the strand runs through the opening of the press ring and the clamping device into the compression tube. While the press ring is at its outer dead center, the passage opening of the clamping device is closed to such an extent that it clamps the strand. The diameter of the opening of the press ring is matched to the thickness of the strand so that the strand does not slide through the opening of the press ring while the press ring is moving from its outer dead center towards its inner dead center. During this advance of the press ring, the strand section between the press ring and the clamping device is first compressed. At the latest when the compression ring and the strand section compressed by it reach the clamping device, the latter is opened so far that the compression ring can pass through the clamping device and thereby presses the compressed section of the strand through the clamping device and the inlet opening of the compression tube into the compression tube. During the return of the press ring, the clamping device closes as soon as the press ring has passed the clamping device, so that the clamping device then holds the strand and the strand slides through its opening during the further return of the press ring. Then a new work cycle of the press-in device begins.

Bei der erfindungsgemäßen Einpreßvorrichtung ist gewährleistet, daß sich der Strang nicht am Preßring verfangen kann, da die Klemmvorrichtung den Strang während des zweiten Abschnitts des Rücklaufs des Preßringes festhält, so daß der Strang zwischen dem Preßring und der Klemmvorrichtung gespannt wird. Die erfindungsgemäße Einpreßvorrichtung arbeitet somit äußerst zuverlässig und störungsfrei.In the press-in device according to the invention it is ensured that the strand is not can get caught on the press ring, since the clamping device holds the strand during the second section of the return of the press ring, so that the strand is tensioned between the press ring and the clamping device. The press-in device according to the invention thus works extremely reliably and trouble-free.

Ein weiterer Vorteil der erfindungsgemäßen Einpreßvorrichtung besteht darin, daß die je Arbeitsspiel der Einpreßvorrichtung transportierte Bahnlänge genau definiert ist, weil sie gleich der Länge des gespannten Strangabschnittes zwischen der Klemmeinrichtung und dem Preßring an seinem äußeren Totpunkt ist. Dadurch wird sehr hohe Gleichmäßigkeit des Knautscheffektes über die gesamte Länge des kontinuierlich bearbeiteten Stranges erreicht.Another advantage of the press-in device according to the invention is that the path length transported per work cycle of the press-in device is precisely defined because it is equal to the length of the stretched strand section between the clamping device and the press ring at its outer dead center. As a result, the crumple effect is very uniform over the entire length of the continuously processed strand.

In vorteilhafter Ausbildung der Erfindung nimmt der Preßring während seines Vorlaufs den Strang aus dem Bahnmaterial durch Haftreibung mit, wobei der Preßring ferner auf seiner dem Stauchrohr zugewandten Seite torusförmig ausgebildet ist, so daß das Bahnmaterial geschont wird.In an advantageous embodiment of the invention, the press ring takes the strand of the web material with it by static friction during its advance, the press ring also being toroidal on its side facing the compression tube, so that the web material is protected.

Der Durchmesser der Öffnung des Preßringes muß der Stärke des Stranges angepaßt sein. Wenn dieser Durchmesser im Verhältnis zur Strangstärke zu groß ist, kann der Strang beim Vorlauf des Preßringes durch dessen Öffnung gleiten, so daß der Preßring den Strang nicht mitnimmt. Um den Durchmesser der Öffnung des Preßringes der Strangstärke anpassen zu können, sind vorzugsweise austauschbare Preßringe mit unterschiedlichen Durchmessern vorgesehen.The diameter of the opening of the press ring must be adapted to the thickness of the strand. If this diameter is too large in relation to the strand thickness, the strand can slide through the opening of the press ring when it is advanced so that the press ring does not take the strand with it. In order to be able to adapt the diameter of the opening of the press ring to the strand thickness, exchangeable press rings with different diameters are preferably provided.

Alternativ kann vorgesehen sein, daß der Durchmesser der Öffnung des Preßringes veränderbar ist, wobei die Öffnung vorzugsweise von einem elastischen Abschnitt des Preßringes begrenzt ist und im Preßring eine den elastischen Abschnitt umgebende Gasdruckkammer ausgebildet ist, in der der Gasdruck einstellbar ist. Je nach dem Druck in der Gasdruckkammer ist der elastische Abschnitt mehr oder weniger radial nach innen ausgelenkt, so daß der Durchmesser der Öffnung vom Gasdruck abhängt.Alternatively, it can be provided that the diameter of the opening of the press ring can be changed, the opening being preferably delimited by an elastic section of the press ring and a gas pressure chamber surrounding the elastic section being formed in the press ring, in which the gas pressure can be adjusted. Depending on the pressure in the gas pressure chamber, the elastic section is more or less deflected radially inwards, so that the diameter of the opening depends on the gas pressure.

Der Preßring muß bis in das Stauchrohr hineingedrückt werden. Vorzugsweise ist zu diesem Zweck ein Tragrohr vorgesehen, das entlang der geradlinigen Achse des Stauchrohres verschiebbar geführt ist und an seinem dem Stauchrohr zugewandten Ende den Preßring koaxial trägt. Das Tragrohr hat glatte Innen- und Außenseiten, so daß nicht die Gefahr besteht, daß das durch das Tragrohr und den Preßring geführte Bahnmaterial und das bereits im Stauchrohr gestauchte Bahnmaterial am Tragrohr hängenbleibt. Die Verschiebung des Preßringes erfolgt mittels einer beliebigen geeigneten Einrichtung, die den Preßring zwischen seinen beiden Totpunkten hin- und herbewegen kann. Beispielsweise ist hierzu ein von einem Elektromotor angetriebenes Kurbelgetriebe geeignet, das die Drehbewegung des Elektromotors in eine lineare Bewegung des Kopfes einer Kurbelschleife umwandelt, die am Preßring bzw. - wenn ein Tragrohr vorgesehen ist - an diesem angreift. Ferner kann die Verschiebung des Preßringes auch mittels eines pneumatischen Zylinders bewirkt werden, dessen Kolbenstange am Preßring bzw. am Tragrohr angreift. Der Hub des Kurbelgetriebes oder des pneumatischen Zylinders ist vorzugsweise so einstellbar, daß der äußere Totpunkt des Preßringes je nach eingestellter Hublänge unterschiedlich liegt. Durch die Einstellung der Lage des äußeren Totpunktes des Preßringes kann auch die bei jedem Arbeitsspiel bzw. Hub transportierte Bahnlänge und dadurch wiederum die Faltenbildung eingestellt werden : Kurze Bahnlänge je Hub, d. h. geringer Abstand zwischen dem äußeren Totpunkt und der Klemmeinrichtung, ergibt kleinere Knautschfalten, und größerer Abstand zwischen der Klemmeinrichtung und dem äußeren Totpunkt ergibt gröbere und größere Knautschfalten.The press ring must be pressed into the compression tube. For this purpose, a support tube is preferably provided, which is displaceably guided along the straight axis of the compression tube and coaxially supports the compression ring at its end facing the compression tube. The support tube has smooth inner and outer sides, so that there is no risk that the web material passed through the support tube and the press ring and the web material already compressed in the compression tube get stuck on the support tube. The displacement of the press ring takes place by means of any suitable device which can move the press ring back and forth between its two dead centers. For example, a crank gear driven by an electric motor is suitable for this purpose, which converts the rotary movement of the electric motor into a linear movement of the head of a crank loop, which acts on the press ring or - if a support tube is provided - on the latter. Furthermore, the displacement of the press ring can also be effected by means of a pneumatic cylinder, the piston rod of which acts on the press ring or on the support tube. The stroke of the crank mechanism or the pneumatic cylinder is preferably adjustable so that the outer dead center of the press ring is different depending on the stroke length set. By adjusting the position of the outer dead center of the press ring, the path length transported with each work cycle or stroke and, in turn, the formation of folds can also be set: Short path length per stroke, ie. H. Small distance between the outer dead center and the clamping device results in smaller crumple folds, and a larger distance between the clamping device and the outer dead center results in coarser and larger crumple folds.

In vorteilhafter Ausbildung der Erfindung sind vier bewegbare Klemmbacken vorgesehen. Die Klemmbacken können jeweils um einen vorrichtungsfesten Lagerpunkt schwenkbar und von zumindest einer Feder so belastet sein, daß sie elastisch zueinander gedrückt werden.In an advantageous embodiment of the invention, four movable clamping jaws are provided. The clamping jaws can each be pivoted about a bearing point fixed to the device and can be loaded by at least one spring such that they are pressed elastically towards one another.

Auf ihren vom Stauchrohr abgewandten Seiten bilden die Klemmbacken vorzugsweise eine konkave Fläche, die der konvexen, dem Stauchrohr zugewandten Seite des Preßringes angepaßt ist. Bei dieser Ausbildung nehmen die Klemmbacken ständig ihre Klemmstellung ein, sofern nicht der Preßring oder dessen Tragrohr zwischen ihnen angeordnet ist. Die Klemmbacken werden während des Vorlaufs vom Preßring und dem von ihm gestauchten Strangabschnitt entgegen der Kraft der Feder bzw. Federn auseinandergedrückt und kehren selbsttätig in ihre Klemmstellung zurück, nachdem der Preßring sie bei seinem Rücklauf passiert hat. Diese Ausbildung zeichnet sich durch besondere Einfachheit und Zuverlässigkeit aus.On their sides facing away from the compression tube, the clamping jaws preferably form a concave surface which is adapted to the convex side of the compression ring facing the compression tube. In this design, the jaws constantly assume their clamping position unless the press ring or its support tube is arranged between them. The jaws are pressed apart during the advance by the press ring and the strand section compressed by it against the force of the spring or springs and automatically return to their clamped position after the press ring has passed them on its return. This training is characterized by particular simplicity and reliability.

In vorteilhafter Ausbildung der Erfindung sind vorzugsweise in Transportrichtung des Bahnmaterials vor dem Preßring Lieferwalzen angeordnet, die das Bahnmaterial von der Vorlage dem Preßring zuführen. Dadurch ist der Preßring von der Aufgabe entlastet, das Bahnmaterial von der Vorlage abzuziehen. Vorzugsweise werden die Lieferwalzen intermittierend während des Vorlaufes des Preßringes angetrieben, und zwar in der Weise, daß sie die je Arbeitsspiel in den Stauchzylinder gepreßte Bahnlänge fördern.In an advantageous embodiment of the invention, delivery rollers are preferably arranged in the transport direction of the web material in front of the press ring, which feed the web material from the template to the press ring. This relieves the pressure ring of the task of pulling the web material off the template. Preferably, the delivery rollers are driven intermittently during the advance of the press ring, in such a way that they promote the web length pressed into the upsetting cylinder per work cycle.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung eines Ausführungsbeispieles unter Bezugnahme auf die Zeichnungen. Es zeigen :

  • Figur 1 eine schematische Darstellung einer kontinuierlich arbeitenden Knautschanlage mit einer Einpreßvorrichtung ; und
  • Figur 2 schematisch einen Längsschnitt durch eine Ausführungsform einer Einoreßvorrichtung für die Knautschanlage gemäß Figur 1, wobei einzelne Elemente in Ansicht dargestellt sind.
Further advantages and features of the invention result from the following description of an exemplary embodiment with reference to the drawings. Show it :
  • Figure 1 is a schematic representation of a continuously operating crushing plant with a press-in device; and
  • Figure 2 schematically shows a longitudinal section through an embodiment of a Einoreßvorrichtung for the crushing plant according to Figure 1, with individual elements are shown in view.

Im folgenden wird zunächst auf Figur 1 eingegangen. Die darin dargestellte Knautschanlage umfaßt eine insgesamt mit dem Bezugszeichen 10 versehene Einpreßvorrichtung, die noch ausführlicher unter Bezugnahme auf Figur 2 erläutert werden wird. Durch die Einpreßvorrichtung 10 verläuft zu einem Strang 12 geformtes Bahnmaterial, das von der Einpreßvorrichtung in ein Stauchrohr 14 eingepreßt wird. Das Stauchrohr 14 ist perforiert und durch ein in einer Wanne 16 enthaltenes Wasserbad geführt. Im Betrieb hat das Wasserbad eine Temperatur von annähernd 100 °C. Die Knautschfalten des im Stauchrohr 14 gestauchten Bahnmaterials werden aufgrund der hohen Temperatur des Wasserbades vorfixiert. Nach einer gewissen Verweilzeit tritt der Strang 12 aus dem an seinem Ende nach oben umgebogenen Stauchrohr und dem Wasserbad aus, wonach der Strang durch ein erstes Quetschwalzenpaar 18 verläuft. Im Anschluß an das Quetschwalzenpaar durchläuft der Strang ein in einer zweiten Wanne 20 enthaltenes kaltes Wasserbad, durch das die Knautschfalten nachfixiert werden. Nach Verlassen des kalten Wasserbades durchläuft der Strang 12 ein zweites Quetschwalzenpaar 22. Das Bahnmaterial hat nach Verlassen des zweiten Quetschwalzenpaares 22 permanente Knautschfalten und wird einer beliebigen Weiterverarbeitung zugeführt.In the following, FIG. 1 is first dealt with. The crumple system shown therein comprises a press-in device provided with the reference number 10, which will be explained in more detail with reference to FIG. Through the press-in device 10, web material formed into a strand 12 runs, which is pressed into a compression tube 14 by the press-in device. The upsetting pipe 14 is perforated and passed through a water bath contained in a tub 16. In operation, the water bath has a temperature of approximately 100 ° C. The crumpled folds of the web material compressed in the compression tube 14 are pre-fixed due to the high temperature of the water bath. After a certain dwell time, the strand 12 emerges from the upset tube bent upward at its end and the water bath, after which the strand passes through a first pair of squeeze rollers 18. Following the pair of squeeze rollers, the strand passes through a cold water bath contained in a second trough 20, by means of which the wrinkles are subsequently fixed. After leaving the cold water bath, the strand 12 runs through a second pair of squeeze rollers 22. After leaving the second pair of squeeze rollers 22, the web material has permanent wrinkles and is fed to any further processing.

Da die Erfindung die Einpreßvorrichtung 10 betrifft, ist die übrige Ausbildung der Knautschanlage für die Erfindung nicht wesentlich. Die vorstehende kurze Erläuterung der übrigen Knautschanlage gibt daher lediglich ein Beispiel für eine mögliche Ausbildung der Knautschanlage an, und die erfindungsgemäße Einpreßvorrichtung 10 kann auch in Verbindung mit anderen als der beschriebenen Knautschanlage verwendet werden, sofern die Knautschanlage ein Stauchrohr aufweist, dessen Achse in seinem Anfangsbereich geradlinig verläuft.Since the invention relates to the press-in device 10, the remaining configuration of the crumple system is not essential to the invention. The above brief explanation of the remaining crumple system therefore only gives an example of a possible configuration of the crumple system, and the press-in device 10 according to the invention can also be used in conjunction with crumple system other than that described, provided the crumple system has a compression tube, the axis of which is in its initial region runs straight.

Figur 2 zeigt schematisch und ausführlicher die Einpreßvorrichtung 10, wobei der Strang 12 sowie das Gestell der Einpreßvorrichtung nicht dargestellt sind.Figure 2 shows schematically and in more detail the press-in device 10, the strand 12 and the frame of the press-in device not being shown.

In Figur 2 ist der Anfangsbereich des Stauchrohres 14 dargestellt. In diesem Anfangsbereich hat das mit zahlreichen Löchern 24 versehene Stauchrohr eine geradlinige Achse. Parallel zur geradlinigen Achse des Anfangsbereiches des Stauchrohres 14 sind vorrichtungsfest zwei Führungsstangen 28 angeordnet, von denen in Figur 2 lediglich eine Führungsstange dargestellt ist. An den Führungsstangen 28 ist mit Hilfe von nicht dargestellten Führungsbuchsen ein zylindrisches Tragrohr30 verschiebbar geführt. Die Achse des zylindrischen Tragrohres 30 fällt mit der geradlinigen Achse des Stauchrohres 10 zusammen. Das zylindrische Tragrohr 30 hat glatte Innen- und Außenseiten und weist an seinem in Figur 2 linken Ende eine trichterförmige Eintrittsöffnung 32 auf. An seinem dem Stauchrohr 14 zugewandten, In Figur 2 rechten Ende trägt das Tragrohr 30 einen Preßring 34. Dieser Preßring 34 ist zumindest auf seiner Außenseite, d. h. seiner dem Stauchrohr zugewandten Seite, torusförmig ausgebildet und weist an seinem Außenumfang eine Schulter auf, an der das in Figur 2 rechte Ende des Tragrohres 30 anliegt. Der Preßring 34 geht außen bündig in das Tragrohr 30 über. Er ist mittels nicht dargestellter Befestigungsmittel lösbar am Tragrohr30 befestigt.The initial region of the upsetting tube 14 is shown in FIG. In this initial area, the upsetting tube provided with numerous holes 24 has a straight axis. Parallel to the straight axis of the starting area of the upsetting tube 14, two guide rods 28 are arranged fixed to the device, of which only one guide rod is shown in FIG. A cylindrical support tube 30 is guided on the guide rods 28 with the aid of guide bushes, not shown. The axis of the cylindrical support tube 30 coincides with the straight axis of the upsetting tube 10. The cylindrical support tube 30 has smooth inner and outer sides and has a funnel-shaped inlet opening 32 at its left end in FIG. 2. At its end facing the compression tube 14, the right end in FIG. 2, the support tube 30 carries a press ring 34. This press ring 34 is at least on its outside, ie. H. its side facing the upsetting tube, is toroidal and has on its outer circumference a shoulder on which the right end of the support tube 30 in FIG. 2 rests. The press ring 34 merges flush with the support tube 30 on the outside. It is detachably fastened to the support tube 30 by means of fastening means, not shown.

Im Preßring 34 ist eine kreisförmige Öffnung 36 ausgebildet, die in einer zur Bewegungsrichtung des Tragrohres 30 senkrechten ebene liegt und deren Mittelpunkt auf der geradlinigen Achse des Stauchrohres 14 und des Tragrohres 30 angeordnet ist.In the press ring 34, a circular opening 36 is formed, which lies in a plane perpendicular to the direction of movement of the support tube 30 and the center of which is arranged on the straight axis of the compression tube 14 and the support tube 30.

Durch Verschiebung des Tragrohres 30 wird der Preßring 34 zwischen einem in Figur 2 mit ausgezogenen Linien dargestellten äußeren Totpunkt und einem inneren Totpunkt verschoben, an dem der Preßring innerhalb des Stauchrohres 14 angeordnet ist. Für den inneren Totpunkt ist in Figur 2 die Kontur des Preßringes und des vorderen Endes des Tragrohres 30 als gestrichelte Kurve 38 dargestellt. Die Verschiebung des Tragrohres 30 und des Preßringes 34 wird beim dargestellten Ausführungsbeispiel von einem in Figur 2 abgebrochen dargestellten pneumatischen Zylinder40 bewirkt, der vorrichtungsfest angeordnet ist und dessen Kolbenstange 42 über einen Arm 44 mit dem Tragrohr 30 verbunden ist. Statt des pneumatischen Zylinders 40 mit seiner Kolbenstange 42 kann jedoch auch jede andere geeignete Antriebsvorrichtung vorgesehen sein, die es ermöglicht, den Preßring 34 zwischen seinen beiden Totpunkten geradlinig hin- und herzubewegen. Beispielsweise ist hierfür auch ein von einem Elektromotor angetriebenes Kurbelgetriebe geeignet.By moving the support tube 30, the press ring 34 is displaced between an outer dead center shown in solid lines in FIG. 2 and an inner dead center, at which the press ring is arranged within the compression tube 14. For the inner dead center, the contour of the press ring and the front end of the support tube 30 is shown as a dashed curve 38 in Figure 2. The displacement of the support tube 30 and the press ring 34 is effected in the illustrated embodiment by a pneumatic cylinder 40 shown broken off in FIG. 2, which is arranged fixed to the device and whose piston rod 42 is connected to the support tube 30 via an arm 44. Instead of the pneumatic cylinder 40 with its piston rod 42, however, any other suitable drive device can also be provided, which makes it possible to move the press ring 34 back and forth in a straight line between its two dead centers. For example, a crank gear driven by an electric motor is also suitable for this.

Die Taktzahl des Zylinders 40, d. h. die Anzahl der Arbeitsspiele je Zeiteinheit, und der Hub des Zylinders 40 sind einstellbar, wobei allerdings der innere Totpunkt des Preßringes 34 nicht verändert wird, sondern nur der äußere Totpunkt verstellt wird, nämlich in gröberen oder kleineren Abstand von der Eintrittsöffnung 26 des Stauchrohres 14 gebracht wird.The cycle number of the cylinder 40, i. H. the number of work cycles per unit of time, and the stroke of the cylinder 40 are adjustable, but the inner dead center of the press ring 34 is not changed, but only the outer dead center is adjusted, namely brought at a coarser or smaller distance from the inlet opening 26 of the compression tube 14 becomes.

Unmittelbar vor der Eintrittsöffnung 26 des Stauchrohres 14 ist eine Klemmeinrichtung 46 angeordnet. Diese Klemmeinrichtung 46 umfaßt beim dargestellten Ausführungsbeispiel zwei Klemmbacken, nämlich eine obere Klemmbacke48 und eine untere Klemmbacke 50. Die Klemmeinrichtung kann jedoch auch mehr als zwei Klemmbacken, beispielsweise vier Klemmbacken, aufweisen. Jede Klemmbacke weist eine Klemmfläche 52 bzw. 54 auf. Die Klemmflächen 52 und 54 sind einander zugewandt und liegen im in Figur 2 dargestellten Zustand aneinander an, so daß die von den beiden Klemmflächen 52 und 54 begrenzte Durchtrittsöffnung der Klemmeinrichtung 46 vollständig geschlossen ist. Die vom Stauchrohr 14 abgewandten Seiten der Klemmbacken 48 und 50 bilden eine konkave Fläche 56, die beim dargestellten Ausführungsbeispiel napförmig ausgebildet ist. Diese napfförmige Fläche 56 ist glatt und dem Preßring 34 an seinem äußeren Totpunkt zugewandt. Jede Klemmbacke 48 und 50 ist jeweils an einem Hebel 58 befestigt, der jeweils um einen vorrichtungsfesten Lagerpunkt 60 schwenkbar ist. Die Lagerpunkte 60 befinden sich auf der vom Stauchrohr 14 abgewandten Seite der Klemmbacken 48 und 50, so daß die Klemmbacken voneinander wegschwenken können und dadurch die Durchtrittsöffnung der Klemmeinrichtung vergrößern, wenn auf die Fläche 56 Druck ausgeübt wird. Die Klemmeinrichtung 46 und ihr Abstand zur Eintrittsöffnung 26 sind so dimensioniert, daß die Durchtrittsöffnung zumindest so weit geöffnet werden kann, daß das Tragrohr30 mit dem Preßring 34 durch die Durchtrittsöffnung hindurch in das Stauchrohr 14 bewegt werden kann. Unter Berücksichtigung dieser Bedingung ist die Klemmeinrichtung 46 möglichst dicht am Stauchrohr 14 angeordnet.A clamping device 46 is arranged directly in front of the inlet opening 26 of the upsetting pipe 14. In the exemplary embodiment shown, this clamping device 46 comprises two clamping jaws, namely an upper clamping jaw 48 and a lower clamping jaw 50. However, the clamping device can also have more than two clamping jaws, for example four clamping jaws. Each jaw has a clamping surface 52 or 54. The clamping surfaces 52 and 54 face each other and, in the state shown in FIG. 2, abut one another, so that the passage opening of the clamping device 46 delimited by the two clamping surfaces 52 and 54 is completely closed. The sides of the clamping jaws 48 and 50 facing away from the upsetting tube 14 form a concave surface 56 which, in the exemplary embodiment shown, has a nap-shaped design. This cup-shaped surface 56 is smooth and the compression ring 34 at its outer dead center turns. Each jaw 48 and 50 is each attached to a lever 58 which is pivotable about a bearing point 60 fixed to the device. The bearing points 60 are located on the side of the clamping jaws 48 and 50 facing away from the upsetting tube 14, so that the clamping jaws can pivot away from one another and thereby enlarge the passage opening of the clamping device when pressure is exerted on the surface 56. The clamping device 46 and its distance from the entry opening 26 are dimensioned such that the passage opening can be opened at least to such an extent that the support tube 30 with the press ring 34 can be moved through the passage opening into the compression tube 14. Taking this condition into account, the clamping device 46 is arranged as close as possible to the upsetting pipe 14.

An jedem Hebel58 greift eine als Zugfeder ausgebildete Feder 62 an, die an ihrem anderen Ende an einem einstellbaren Federsitz 64 aufgehängt ist, mittels dessen die Federkraft einstellbar ist. Die Federn 62 drücken die Klemmbacken 48 und 50 elastisch zueinander, so daß die Klemmeinrichtung 46 im Ruhezustand die in Figur 2 dargestellte Stellung einnimmt und die Klemmbacken entgegen den Kräften der Federn 62 auseinangedrückt werden können. Die von den Klemmflächen 52 und 54 ausgeübte Klemmkraft ist mittels der einstellbaren Federsitze 64 einstellbar.A spring 62 designed as a tension spring acts on each lever 58 and is suspended at its other end on an adjustable spring seat 64, by means of which the spring force can be adjusted. The springs 62 elastically press the clamping jaws 48 and 50 towards one another, so that the clamping device 46 assumes the position shown in FIG. 2 in the idle state and the clamping jaws can be pressed apart against the forces of the springs 62. The clamping force exerted by the clamping surfaces 52 and 54 can be adjusted by means of the adjustable spring seats 64.

In Transportrichtung des Bahnmaterials vor dem Preßring 34 und dem Tragrohr 30, d. h. in Figur links vom Tragrohr 30, sind in einem vorrichtungsfesten Rahmen 66 drehbar gelagerte Lieferwalzen 68 angeordnet. Durch den Walzenspalt dieser Lieferwalzen verläuft die geradlinige Achse des Stauchrohres 14 und des Tragrohres 30. Die Spaltweite der Lieferwalzen 68 ist einstellbar, und die Lieferwalzen können von einer nicht dargestellten Antriebseinrichtung gesteuert angetrieben werden. Der Antrieb der Lieferwalzen erfolgt beim dargestellten Ausführungsbeispiel intermittierend während des Vorlaufes des Preßringes 34 von seinem äußeren Totpunkt zu seinem inneren Totpunkt, wobei die Lieferwalzen 68 jeweils genau die Bahnlänge fördern, die bei jedem Arbeitsspiel vom Preßring 34 in den Stauchzylinder 14 gepreßt wird.In the direction of transport of the web material in front of the press ring 34 and the support tube 30, d. H. in the figure to the left of the support tube 30, delivery rollers 68 are rotatably mounted in a frame 66 fixed to the device. The straight axis of the upsetting tube 14 and the support tube 30 runs through the nip of these delivery rollers. The gap width of the delivery rollers 68 is adjustable and the delivery rollers can be driven in a controlled manner by a drive device, not shown. In the exemplary embodiment shown, the delivery rollers are driven intermittently during the advance of the press ring 34 from its outer dead center to its inner dead center, the delivery rollers 68 in each case conveying exactly the length of the web which is pressed by the press ring 34 into the upsetting cylinder 14 during each working cycle.

Zwischen den Lieferwalzen 68 und dem Tragrohr 30 sind am Rahmen 66 drehbar zwei seitliche Leitwalzen angeordnet, von denen in Figur 2 lediglich eine Leitwalze 70 dargestellt ist. Die Achsen der Leitwalzen verlaufen senkrecht zu den Achsen der Lieferwalzen 68.Between the delivery rollers 68 and the support tube 30, two lateral guide rollers are rotatably arranged on the frame 66, of which only one guide roller 70 is shown in FIG. The axes of the guide rolls are perpendicular to the axes of the delivery rolls 68.

Im folgenden wird die Funktionsweise der vorstehend beschriebenen Einpreßvorrichtung 10 erläutert. Im Betrieb verläuft der in Figur 2 nicht dargestellte Strang 12 durch den Walzenspalt der Lieferwalzen 68, das Tragrohr 30, die Öffnung 36 des Preßringes 34, die Durchtrittsöffnung der Klemmeinrichtung 46 und in das Stauchrohr 14. Die Spaltweite der Lieferwalzen 68 ist der Strangstärke so angepaßt, daß der Strang 12 zuverlässig gefördert wird. In das Tragrohr 30 ist ein Preßring 34 mit einem solchen Durchmesser seiner Öffnung 36 eingesetzt, daß die Haftreibung zwischen dem Preßring 34 und dem Strang einerseits so groß ist, daß der Preßring 34 bei seinem Vorlauf den Strang mitnimmt, ohne daß der Strang durch den Preßring 34 (nach links in Figur2) zurückgleitet, und andererseits so klein ist, daß der Strang beim Rückluuf des Preßringes 34 durch diesen gleiten und von der Klemmeinrichtung 46 festgehalten werden kann. Die Federkraft der Federn 62 wird so eingestellt, daß die Klemmbacken 48 und 50 den Strang noch zuverlässig festklemmen, während der Preßring von der Klemmeinrichtung 46 zu seinem äußeren Totpunkt zurückläuft.The mode of operation of the press-in device 10 described above is explained below. In operation, the strand 12, not shown in FIG. 2, runs through the nip of the delivery rollers 68, the support tube 30, the opening 36 of the press ring 34, the through opening of the clamping device 46 and into the compression tube 14. The gap width of the delivery rollers 68 is adapted to the strand thickness that the strand 12 is reliably promoted. In the support tube 30, a press ring 34 is inserted with such a diameter of its opening 36 that the static friction between the press ring 34 and the strand is on the one hand so great that the press ring 34 entrains the strand during its advancement without the strand through the press ring 34 (to the left in Figure 2) slides back, and on the other hand is so small that the strand when the press ring 34 returns, can slide through it and be held by the clamping device 46. The spring force of the springs 62 is set so that the clamping jaws 48 and 50 still reliably clamp the strand while the press ring runs back from the clamping device 46 to its outer dead center.

Mittels einer nicht dargestellten Steuereinrichtung für den Zylinder40 werden dessen Taktzahl und Hub eingestellt, wobei eine Änderung des Hubes des Zylinders 40 lediglich eine Änderung der Lage des äußeren Totpunktes des Preßringes 34, nicht jedoch seines inneren Totpunktes zur Folge hat. Durch die Lage des äußeren Totpunktes ist die Länge des Strangabschnittes zwischen der Klemmeinrichtung 46 und dem Preßring 34 an seinem äußeren Totpunkt festgelegt. Diese Länge beeinflußt die Knautschfaltenbildung in der Weise, daß größere Länge zu gröberen Falten und kleinere Länge zu feineren Knautschfalten führt. Durch die Taktzahl und den Hub des Zylinders40 sind die Fördergeschwindigkeit des Bahnmaterials und damit auch die Verweilzeit desselben im Wasserbad in der Wanne 16 bestimmt.By means of a control device (not shown) for the cylinder 40, the number of cycles and stroke are set, a change in the stroke of the cylinder 40 only resulting in a change in the position of the outer dead center of the press ring 34, but not its inner dead center. The position of the outer dead center determines the length of the strand section between the clamping device 46 and the press ring 34 at its outer dead center. This length influences the formation of wrinkles in such a way that longer lengths lead to coarser folds and smaller lengths lead to finer wrinkles. The conveying speed of the web material and thus also the dwell time of the same in the water bath in the tub 16 are determined by the number of cycles and the stroke of the cylinder 40.

Zu beginn eines Arbeitsspiels nehmen die Elemente der Einpreßvorrichtung die in Figur 2 dargestellte Stellung ein, wobei allerdings zu berücksichtigen ist, daß der Strang in vorstehend angegebener Weise durch die Einpreßvorrichtung 10 verläuft. Zwischen der Klemmeinrichtung 46 und dem Preßring 34 ist der Strang leicht gespannt. Zwischen den Lieferwalzen 68 und dem Preßring 34 liegt der Strang lose im Tragrohr 20. Während des vom Zylinder 40 bewirkten Vorlaufes des Tragrohres 30 und des Preßringes 34 wird der Strangabschnitt zwischen dem Preßring 34 und der Klemmeinrichtung zusammengedrückt und gestaucht. Dabei wird schließlich der vom Preßring 34 über den gestauchten Strangabschnitt auf die Fläche 56 ausgeübte Druck so stark, daß die Klemmbacken 48 und 50 um ihre Lagerpunkte 60 entgegen den Federkräften der Federn 62 aufschwenken und der Preßring 34 den gestauchten Strangabschnitt durch die Durchtrittsöffnung der Klemmeinrichtung und die Eintrittsöffnung 26 des Stauchrohres 14 hindurch in das Stauchrohr 14 drücken kann. Dabei tritt auch das Tragrohr30 durch die-Klemmeinrichtung 46 hindurch. Im Stauchrohr 14 wird der dort bereits vorhandene Strang vom bei diesem Arbeitsspiel zusätzlich in das Stauchrohr geförderten Strangabschnitt weitergedrückt.At the beginning of a work cycle, the elements of the press-in device assume the position shown in FIG. 2, although it must be taken into account that the strand runs through the press-in device 10 in the manner described above. The strand is slightly stretched between the clamping device 46 and the press ring 34. Between the delivery rollers 68 and the press ring 34, the strand lies loosely in the support tube 20. During the advance of the support tube 30 and the press ring 34 caused by the cylinder 40, the strand section between the press ring 34 and the clamping device is compressed and compressed. Finally, the pressure exerted by the press ring 34 on the compressed strand section on the surface 56 becomes so strong that the clamping jaws 48 and 50 pivot about their bearing points 60 against the spring forces of the springs 62 and the press ring 34 pushes the compressed section through the passage opening of the clamping device and can press the inlet opening 26 of the compression tube 14 into the compression tube 14. The support tube 30 also passes through the clamping device 46. In the upsetting tube 14, the strand already present there is pushed further by the strand section additionally conveyed into the upsetting tube in this work cycle.

Von seinem inneren Totpunkt aus beginnt dann der Preßring 34 seinen Rücklauf. Dabei entspannt sich der zuletzt in das Stauchrohr 14 gepreßte Strangabschnitt etwas, während der Preßring 34 das in seiner Öffnung 36 eingeklemmte Material zunächst gleitfrei mitnimmt. Während dieses ersten Abschnittes des Rücklaufes gleiten die Klemmbacken 48 und 54 über die Außenseite des Tragrohres 30 und des Preßringes 34, bis schließlich die Fläche 56 der Klemmeinrichtung und die Außenseite des Preßringes 34 in Berührung stehen und sich die Klemmbacken 48 und 50 zunehmend einander nähern können. Während dieser Schließbewegung der Klemmeinrichtung 56 streifen deren Klemmbacken 48 und 50 jegliches möglicherweise auf der Außenseite des Preßringes 34 anliegende Material vom Preßring ab. Die Durchtrittsöffnung der Klemmeinrichtung 46 ist schließlich so weit geschlossen, daß die Klemmflächen 52 und 54 den Strang unmittelbar hinter dem Preßring 34, d. h. in Figur 2 rechts von diesem, festklemmen. Von dem Zeitpunkt an, zu dem die Klemmeinrichtung 46 den Strang festgeklemmt hat, gleitet der Strang durch die Öffnung 36 des Preßringes 34, wobei der Strang zwischen der Klemmeinrichtung und dem Preßring 34 leicht gespannt wird. Die Länge des bis zum Erreichen des äußeren Totpunktes durch den Preßring 34 gleitenden Strangabschnitts ist die je Arbeitsspiel der Einpreßvorrichtung geförderte und eingepreßte Bahnlänge und wird jeweils während des Vorlaufes des Preßringes 34 von den Lieferwalzen 68 nachgefördert. Allerdings können die Lieferwalzen 68 auch kontinuierlich arbeiten, wenn der Stauraum zwischen dem Preßring 34 und den Lieferwalzen 68 zur Aufnahme des kontinuierlich geförderten Bahnmaterials ausreicht.From its inner dead center, the press ring 34 then begins its return. The strand section last pressed into the compression tube 14 relaxes somewhat, while the press ring 34 the material clamped in its opening 36 is initially carried without sliding. During this first portion of the return, the jaws 48 and 54 slide over the outside of the support tube 30 and the press ring 34 until finally the surface 56 of the clamping device and the outside of the press ring 34 are in contact and the jaws 48 and 50 can increasingly approach each other . During this closing movement of the clamping device 56, the clamping jaws 48 and 50 thereof strip off any material possibly lying on the outside of the press ring 34 from the press ring. The passage opening of the clamping device 46 is finally closed to such an extent that the clamping surfaces 52 and 54 clamp the strand directly behind the press ring 34, ie to the right of this in FIG. 2. From the point at which the clamping device 46 has clamped the strand, the strand slides through the opening 36 of the press ring 34, the strand being slightly tensioned between the clamping device and the press ring 34. The length of the strand section sliding until the outer dead center is reached by the press ring 34 is the web length conveyed and pressed in per working cycle of the press-in device and is replenished by the delivery rollers 68 during the advance of the press ring 34. However, the delivery rollers 68 can also work continuously if the storage space between the press ring 34 and the delivery rollers 68 is sufficient to hold the continuously conveyed web material.

Aufgrund der beschriebenen Ausbildung und der beschriebenen Funktionsweise kann es weder hinter den Lieferwalzen 68, noch hinter dem Preßring 34, noch hinter den Klemmbacken 48 und 50 zu einem Materialstau kommen. Die Einpreßvorrichtung arbeitet daher außerst störungsfrei. Die je Arbeitsspiel geförderte Bahnlänge und somit die Knautschfaltenausbildung sind genau steuerbar.Due to the described design and the described mode of operation, there can be no material jam either behind the delivery rollers 68, behind the press ring 34, or behind the clamping jaws 48 and 50. The press-in device therefore works extremely trouble-free. The web length promoted per work cycle and thus the formation of wrinkles can be precisely controlled.

Claims (13)

1. A stuffing device for a continuously operating crinkling unit for continuous material, comprising a compression tube, the axis of which extends straightly in its starting zone and into which the continuous material, formed into a strip, is stuffed, a stuffing ring capable of being displaced in the direction of the straight-line axis of the compression tube between an inner dead point, at which the stuffing ring is located inside the compression tube, and an outer dead point, at which the stuffing ring is located outside the compression tube, the stuffing ring having an opening in a plane normal to its direction of movement, through which the strip passes, and a retaining means located between the outer dead point of the stuffing ring and the entry opening of the compression tube and having a passage opening, through which the stuffing ring projecting towards the inner dead point can pass, and in which the strip can be retained during the return of the stuffing ring, characterized in that the retaining means is formed as clamping means (46) comprising at least two movable clamping jaws (48, 50) whose clamping faces (52, 54) facing each other limit the passage opening, the clamping jaws stripping off continuous material during the return of the stuffing ring (34) from the outside thereof and reducing the passage opening to such an extent that the continuous material is gripped between the clamping jaws.
2. A stuffing device according to claim 1, characterized in that the stuffing ring (34) drives the strip (12) during its advance by static friction.
3. A stuffing device according to claims 1 or 2, characterized in that the stuffing ring (34) is torusshaped on its side facing the compression tube (14).
4. A stuffing device according to one of claims 1 to 3, characterized in that the diameter of the opening (36) of the stuffing ring (34) is variable.
5. A stuffing device according to claim 4, characterized in that the opening (36) is defined by an elastic portion of the stuffing ring and that a gas pressure-chamber, surrounding the elastic portion, is formed in the stuffing ring.
6. A stuffing device according to one of claims 1 to 5, characterized by a support tube (30) being guided displaceably along the straight-line axis of the compression tube (14) and carrying the stuffing ring (34) coaxially on its end facing the compression tube.
7. A stuffing device according to claim 6, characterized in that the clamping means comprises four movable clamping jaws.
8. A stuffing device according to claims 6 or 7, characterized in that each clamping jaw (48, 50) is mounted to be pivotable about a bearing point (60), fixed with respect to the device.
9. A stuffing device according to claim 8, characterized in that the sides of the clamping jaws (48, 50) facing away from the compression tube (14) form a concave surface (56).
10. A stuffing device according to one of claims 6 to 9, characterized in that the clamping jaws (48, 50) are pressed together in a resilient manner by at least one spring (62).
11. A stuffing device according to one of claims 1 to 10, characterized by feeding rollers (68) being located in the transport direction of the continuous material in front of the stuffing ring (34).
12. A stuffing device according to one of claims 1 to 11, characterized by a pneumatic cylinder (40) connected to the stuffing ring (34) for displacing the stuffing ring between its dead points.
13. A stuffing device according to one of claims 1 to 11, characterized by a crank gear mechanism connected to the stuffing ring (34) for displacing the stuffing ring between its dead points and by an electromotor for driving the crank gear mechanism.
EP80103689A 1979-06-30 1980-06-30 Pressure feeding device for an apparatus for continuously crumpling a fabric Expired EP0021450B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2926478 1979-06-30
DE19792926478 DE2926478A1 (en) 1979-06-30 1979-06-30 PRESSING DEVICE FOR A CONTINUOUSLY WORKING GRAY SYSTEM

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EP0021450A1 EP0021450A1 (en) 1981-01-07
EP0021450B1 true EP0021450B1 (en) 1983-10-26

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EP80103689A Expired EP0021450B1 (en) 1979-06-30 1980-06-30 Pressure feeding device for an apparatus for continuously crumpling a fabric

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US (1) US4407052A (en)
EP (1) EP0021450B1 (en)
DE (1) DE2926478A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926478A1 (en) * 1979-06-30 1981-01-22 Edelmann Maschf PRESSING DEVICE FOR A CONTINUOUSLY WORKING GRAY SYSTEM
DE2932495A1 (en) * 1979-08-10 1981-02-26 Edelmann Maschf Continuous compressive crumpling appts. for fabric rope - comprises perforated tube surrounded by steam jacket
ATE33507T1 (en) * 1984-04-18 1988-04-15 Kurt Kleber DEVICE FOR PRODUCTION OF CRUSHED PLEATED PATTERNS IN PANELS.
GB2566250A (en) * 2017-06-20 2019-03-13 Petit Pli Ltd Garment pleating

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2851206A (en) * 1954-08-03 1958-09-09 Bancroft & Sons Co J Random pleating of fabric
DE1093171B (en) * 1957-03-26 1960-11-17 Forkardt Paul Kg Clamping device, especially feed tongs for rotating workpieces on lathes
US3640442A (en) * 1970-03-16 1972-02-08 Gilbert T Lyon Stock pusher
DE2151004A1 (en) * 1971-10-13 1973-04-19 Sistig Kg Leo Creasing material - by feeding through rilled guide to roller pr ess
US4006516A (en) * 1973-03-30 1977-02-08 Deering Milliken Research Corporation Process for imparting a crushed appearance to pile fabric
SU478782A1 (en) * 1973-12-19 1975-07-30 Предприятие П/Я В-2615 Device for capping vessels
DE2406503A1 (en) * 1974-02-12 1975-08-21 Vepa Ag Yarn steam pressure fixing unit - has intermittent pressure locks at inlet-outlet to give friction- and tension-free feed
US3987519A (en) * 1975-09-15 1976-10-26 J. P. Stevens & Co., Inc. Apparatus for crushing cloth
US4134187A (en) * 1977-12-27 1979-01-16 Joan Fabrics Corporation Pile fabric crushing apparatus
DE2926478A1 (en) * 1979-06-30 1981-01-22 Edelmann Maschf PRESSING DEVICE FOR A CONTINUOUSLY WORKING GRAY SYSTEM
DE2932495A1 (en) * 1979-08-10 1981-02-26 Edelmann Maschf Continuous compressive crumpling appts. for fabric rope - comprises perforated tube surrounded by steam jacket

Also Published As

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DE2926478C2 (en) 1988-10-27
US4407052A (en) 1983-10-04
EP0021450A1 (en) 1981-01-07
DE2926478A1 (en) 1981-01-22

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