EP0101575A2 - Bande à chaînons - Google Patents

Bande à chaînons Download PDF

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Publication number
EP0101575A2
EP0101575A2 EP83107399A EP83107399A EP0101575A2 EP 0101575 A2 EP0101575 A2 EP 0101575A2 EP 83107399 A EP83107399 A EP 83107399A EP 83107399 A EP83107399 A EP 83107399A EP 0101575 A2 EP0101575 A2 EP 0101575A2
Authority
EP
European Patent Office
Prior art keywords
spiral
filling material
spirals
tube
filler material
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.)
Ceased
Application number
EP83107399A
Other languages
German (de)
English (en)
Other versions
EP0101575A3 (fr
Inventor
Johannes Lefferts
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siteg Siebtechnik GmbH
Original Assignee
Siteg Siebtechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siteg Siebtechnik GmbH filed Critical Siteg Siebtechnik GmbH
Publication of EP0101575A2 publication Critical patent/EP0101575A2/fr
Publication of EP0101575A3 publication Critical patent/EP0101575A3/fr
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0072—Link belts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49828—Progressively advancing of work assembly station or assembled portion of work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49881—Assembling or joining of separate helix [e.g., screw thread]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53087—Means to assemble or disassemble with signal, scale, illuminator, or optical viewer
    • Y10T29/53091—Means to assemble or disassemble with signal, scale, illuminator, or optical viewer for work-holder for assembly or disassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53687—Means to assemble or disassemble by rotation of work part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1369—Fiber or fibers wound around each other or into a self-sustaining shape [e.g., yarn, braid, fibers shaped around a core, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249922—Embodying intertwined or helical component[s]

Definitions

  • the invention relates to a spiral of great length for the production of a spiral band and a method and a device for introducing filler material into spirals for a spiral band according to the preamble of claims 1, 5 and 10, as well as a spiral band produced from such spirals.
  • the invention has for its object to provide spirals of great length with which spiral bands of uniform permeability can be produced, as well as an apparatus and a method for filling such To provide plastic spirals.
  • the invention further relates to a device for wrapping two intertwined spirals with a wrapping thread, by means of which it is ensured that a sufficient length of filler material is drawn in by the further conveyed spiral.
  • the invention also relates to a spiral band which is produced from a multiplicity of spirals according to one of claims 1 to 4.
  • the spirals are generally wound from a plastic monofilament. If the spiral tape produced from this serves as a covering for a paper machine, the spirals generally consist of polyester monofilament.
  • the spiral according to the invention has a large length, ie the length of the spiral can be of any length.
  • the spirals are of any length before the joining together and are only cut according to the width of the spiral tape after the joining. Before being put together, the spirals therefore have a length of 300 meters, for example.
  • the spirals must therefore reasonably be filled to this full length.
  • a spiral of great length with the features of claim 1 has not previously been producible, not even by hand. It is not possible to evenly fill a spiral, for example, 300 meters long by hand, and to avoid any torsion of the filling material.
  • DE-A 30 39 873 are endless filled Spi - described eral.
  • the spirals are wrapped around the filling material during manufacture, which limits the volume and hardness of the filling material, because if the volume is too large or the hardness is too great, the spiral would be deformed when wound onto the mandrel and the spiral would become irregular and would become unusable.
  • the filling material is introduced endlessly into the spirals and has no or a defined uniform torsion, the interior of the spirals is filled to a certain percentage evenly along the spiral axis and the spiral bands produced therefrom therefore have a uniform permeability.
  • the uniform permeability is also maintained if several monofilaments in the form of filler material are introduced into each spiral, since these monofilaments can be introduced in parallel.
  • the spiral 1 passes through a fixed tube 2, around which a disc 4 rotates.
  • the supply of the filling material is rotatably arranged with respect to the disc 4, in such a way that the filling material supply rotates in the opposite direction with respect to the disc 4 with each rotation of the disc 4, whereby the filling material supply becomes its own Overall orientation not changed.
  • a gear 3 is on the tube 2 is arranged stationary and the F üllma- terialvorrat, which is wound on reels 6, 7 is rotatably mounted on a further gear 5 rotatably mounted on the disc 4 and is mounted at a distance from the center thereof and is connected to the gear 3 via a drive chain, a toothed belt or the like.
  • the gears 3 and 5 have the same number of teeth.
  • the gear 5 thereby rotates with the disk 4 around the gear 3, but maintains its orientation.
  • the coils 6 and 7 thus always keep the same mutual orientation, ie the connecting line AA through the two coil centers does not change its orientation during the rotation of the disk 4 and the filling material, which in the embodiment shown in FIG. 1 consists of two filling threads 24, is introduced into the spiral 1 without torsion, so that the two filling elements lie parallel and without crossing and torsion in the interior of the spiral.
  • Yarn guides 8a, 8b and 9 are firmly connected to the gear 5, while another yarn guide 10 is attached to the disc 4.
  • the filling material that is on the coils 6 and 7 is wound, is first passed through the yarn guides 8a or 8b and 9 and then through the yarn guide 10 arranged firmly on the disc 4, the guide eye of which is located near the center of the disc 4 and immediately above the upper end of the fixed one Tube 2 is located.
  • the speed of rotation of the disc 4 and the speed at which the spiral 1 is conveyed upward through the fixed tube 2 are coordinated with one another in such a way that the disc 4 makes exactly one revolution within the time in which the spiral 1 continues by one turn is promoted.
  • the twist that the thread guide 9 has with respect to the disk 4 is inevitably transmitted to the freely rotatable eye of the thread guide 10.
  • the Filling material runs through the inside of the steel helix and is secured against torsion.
  • the opening of the ball bearing, ie the thread guide eye can be narrowed to a slot so that the filler material cannot twist relative to it.
  • the filling material is to have a certain, regular rotation, for example a rotation per meter, this can be achieved in that the toothed wheels 3 and 5 have slightly different numbers of teeth.
  • feed rollers 12 are arranged under the disk 4, which feed the spiral 1 into the tube 2 at the lower end thereof, and 2 take-off rollers 14 'are mounted at a distance from the upper end of the tube.
  • the take-off rollers 14 run somewhat faster than the feed rollers 12, as a result of which the spiral piece between the two pairs of rollers is pulled apart somewhat.
  • the number of spiral turns which are recorded by the take-off rollers 14 per unit of time is reduced until an equilibrium state is reached which is reached when the number of spiral turns detected by the feed rollers 12 per unit time is equal to that recorded by the take-off rollers 14 per unit time.
  • FIG. 3 Another possibility for further conveying the spiral 1 is shown in FIG. 3.
  • a pin 15 which extends over several spiral windings and has a diameter such that it can rotate freely inside the spiral 1.
  • a fastening wire 16 extends perpendicular to the longitudinal axis of the pin 15, e.g. a monofilament, through the pin 15.
  • the fastening wire 16 is stretched between two supports 18 which rotate with the disk 4.
  • the supports 18 can be arranged directly on the disc 4.
  • the spiral 1 is conveyed further by means of the rotating fastening wire 16, the conveying speed of the spiral 1 being controlled directly by the rotational speed of the disk 4, the desired coordination of the forward movement of the spiral 1 and the circular movement of the filling material being achieved automatically.
  • two pins 15 are expediently arranged one above the other with the filling material being fed into the space between the two pins 15 becomes.
  • FIG. 5 A combination of the devices for the further transport of the spiral 1 shown in FIG. 2 on the one hand and FIGS. 3 and 4 on the other hand is also possible, the possibility shown in FIG. 5 having proven best in practice.
  • a fastening pin 15 held just above the upper end of the fixed tube 2 is used in connection with take-off rollers 14, which grip the spiral 1 at a distance above the pin 15.
  • the filling material is fed between the pin 15 and the take-off rollers 14.
  • the feed rollers 12, which are arranged under the disk 4 can also be combined with a pin 15 arranged at a somewhat greater distance above the upper end of the fixed tube 2.
  • the filling material is fed between the upper end of the tube 2 and the pin 15.
  • the disc 4 can have a speed of e.g. 1000 to 1400 revolutions per minute, in which case about 150 m of spiral are filled per hour.
  • FIGS. 17 and 18 Another exemplary embodiment of the device for introducing the filling material into the spiral is shown in FIGS. 17 and 18.
  • the disc 4 is in this case rotatably mounted by means of a ball bearing 41 in a corresponding circular opening in a frame 42.
  • the axis of rotation is oriented vertically, although any other orientation of the axis of rotation is also possible in principle.
  • the spiral and the filling material in turn rotate around one another without self-rotation, ie while maintaining the same their orientation.
  • the position of filling material and spiral is interchanged in the exemplary embodiment in FIGS. 17 and 18 and the filling material runs through the center of the disk 4 and thus on the axis of rotation.
  • the spiral runs through an eccentric opening of the disk 4.
  • the disk 4 is driven by a V-belt 42 by a drive motor, not shown. So that the filling material and the spiral 1 do not experience a change in their orientation when they are guided through the disc 4 as a result of contact with the opening edges of the rotating disc 4, the filling material and the spiral 1 are guided through the disc 4 through pipes 44 and 2, respectively which are rotatably mounted with respect to the disc 4 by means of ball bearings 47.
  • the tube 44 carries a plate 45 with a gap 46 at the upper end. At the lower end of the tube 44 there is a coil holder 48 which holds the coil 6 with the filling material 26.
  • the filling material 26 runs through the tube 44 and is fed through the gap 46 at the upper end of the tube 44 in a direction-oriented manner between the turns of the spiral 1 into the latter at the junction point 60.
  • the coil holder 48 therefore also does not follow the rotation of the disk 4.
  • the tube 2 is rotatably supported in the eccentric opening of the disc 4 with respect to the disc 4 by ball bearings. At the upper end it has a slit-shaped opening which is adapted to the cross-sectional shape of the spiral 1, that is to say, for example, has an elliptical shape in the case of spirals with an elliptical cross-section.
  • the spiral is guided by a guide 56 from a not shown and not connected to the disc 4 stationary supply, generally a jug.
  • the guide 56 ensures that the spiral 1 fed from below does not collide with the coil holder 48.
  • the further conveying of the spiral 1 takes place essentially as shown in FIG. 5, namely by means of a pin 15 located inside the spiral 1, which is held between two supports 18 by a fastening wire 16.
  • the supports 18 hold the pin 15 at a point between the upper end of the tube 2 and the junction point 60.
  • the device for maintaining the orientation of the filling material 26 and the spiral 1 is more complex in this exemplary embodiment than in the exemplary embodiment in FIG. 1.
  • a gear wheel 3 which is connected to a gear wheel 5 on the central tube 44 by a chain or a toothed belt 57 is connected.
  • the chain or toothed belt 57 also runs around a toothed wheel 50 on a shaft 54, which is rotatably supported in the disk 4 by ball bearings 53 at an eccentric point.
  • the tubes 44 and 2 and the shaft 54 are arranged approximately at the corners of an equilateral triangle, so that there is a sufficiently large wrap angle for the V-belt 57 on the gears 3, 5 and 50.
  • the shaft 54 extends upward beyond the merging point 60 and has at the upper end a further gear 51 which is connected via a chain or a toothed belt to a gear 52 which is fixed, arranged above the merging point and one in the middle Has opening through which the already filled spiral 1 is passed up through the nip of the take-off roller 14.
  • the gears 51 and 52 white sen the same number of teeth and the gear 51 and thus the shaft 54 have consequently the same, unchanged orientation as the fixed gear 52.
  • the gears 3, 5 and 50 also have the same number of teeth and are therefore due to the connection with the shaft 54 and the fixed gear 52 also unchanged in their orientation.
  • the spiral 1 is, as it were, wrapped around the filler material 26 by the device shown in FIGS. 17 and 18.
  • the spiral 1 and the filling material 26 maintain their orientation, i.e. they do not experience any longitudinal rotation.
  • the spiral 1 rotates around the filling material 26 below the merging point.
  • the filling material 26 is tensioned sufficiently by means of the thread guide 55, which also acts as a thread brake. Due to the pin 15 held in the interior of the spiral by wires 16, the spiral 1 rotates by 360 ° with respect to the pin 15 with each rotation of the disk 4 and a turn is thereby further conveyed. Since the spiral 1 does not rotate about its longitudinal axis, it can be fed without difficulty from a can under the device.
  • the take-off rollers 14 continue the filled spiral 1. Its speed is set such that the spiral 1 is pulled apart somewhat between the pin 15 and the take-off rollers 14, so that the filling material 26 easily slides into the interior of the spiral 1.
  • the advantage of the embodiment according to FIGS. 17 and 18 compared to the embodiment of FIG. 1 is, in particular, that not all of the filling material supply rotates at the edge of the disk and the mass moment of inertia is thus significantly smaller. Both the coil 6 with the filling material supply and the jug with the empty spiral stand still. The speeds that can be achieved are therefore much higher. Larger coils 6 can thus be used for the filling material supply. Because the filler material can be processed under greater tension, the risk of undesired longitudinal rotation of the filler material and thus errors in the workflow is also reduced.
  • the speed of the Ab tension rollers 14 may be slightly higher than the conveying speed of the spiral determined by the rotational speed of the disc 4.
  • the slightly higher speed of the draw-off rollers 14 only leads to the spiral being stretched uniformly, but does not impair the coupling between the conveying speed of the spiral 1 and the rotational speed of the disk 4.
  • the length of the filling material in the finished spiral band must be controlled according to the length of the spiral that it occupies in the finished spiral band. This is achieved in that the already filled spiral 1 is brought into engagement with a further spiral 11 from the opposite direction of rotation, as shown in FIG. 7. The turns of the spiral 1 mesh with the turns of the further spiral 11 in the same way as is the case in the finished spiral band. The spiral 1 therefore assumes the same slope or the same length that it also has in the finished spiral belt: and thus subtracts exactly the required length of the filler material from the filler material supply.
  • the further spiral 11 can be an auxiliary spiral, which is released from the spiral 1 again after passing through the pair of rollers shown in FIG. 7 and runs on a closed path. In this case it is necessary dig that the spiral 1 does not contract again, otherwise the filling material in the spiral 1 is compressed. Rather, it is necessary to use a spiral 1 which, from the beginning, has the slope which it also has in the finished spiral band, ie generally a slope twice the thickness of the wire from which the spiral 1 is made.
  • the separation of the spirals 1 and the later joining together of the individual filled spirals to form the spiral band is also disadvantageous because the filling material in a single spiral 1 can shift slightly and accumulate in places. If such spirals are installed in a spiral band, not only is the permeability irregular, but the filling material which has accumulated in places can even prevent or make it more difficult to completely fit the spirals together. If, in contrast, the spirals 1 are already inserted into one another in pairs when the filling material is introduced, one spiral in each case prevents the filling material from shifting in the other spiral. Another advantage is that the filling material is not only clamped at a single point, but rather the part of the two spirals that has already been inserted into one another acts as a clamping zone, thereby ensuring a precisely adapted length of the filling material.
  • FIG. 8 A bobbin 20 and a thread guide holder 21 are rotatably mounted around a fixed tube 19.
  • the two filled spirals 1 inserted into one another run through the tube 19 and the winding thread 24 is wound on the bobbin 20.
  • the winding thread 24 runs from the bobbin 20 arranged under the thread guide holder 21 via thread guides 22 and 23, which are fixedly mounted on the thread guide holder 21, to the two spirals 1 at a point above the upper end of the fixed tube 19.
  • the idling thread guide holder 21 is entrained by the wrapping thread 24, which runs through the thread guides 22 and 23, that is set in rotation, and winds the wrapping thread 24 around the two spirals 1, which run out at the upper end of the fixed tube 19.
  • the wrapping thread 24 wraps around the fillings 26 in the spirals 1, thereby preventing the spirals 1 from falling apart.
  • the winding thread 24 is to be supplied without tension and with a certain excess length, as shown in FIGS. 10 and 10a, since otherwise the two fillings 26 are drawn toward one another and then the channel 28 for the plug wire can no longer be formed later.
  • 10b shows how a winding thread 24, which is fed with too little excess length, prevents the formation of the channel 28 for the plug wire.
  • the tension-free Unit and the excess length of the winding thread 24 is achieved in that one or more rigid wires 29 are attached to the fixed tube 19, for example by means of an annular flange 27, which run in the conveying direction of the spirals 1 and at their fastening point a relatively large distance from the longitudinal axis of the tube 19 and then approximate "asymptotically" to the extent that they have the distance at their upper end that is necessary for the desired excess length of the winding thread 24.
  • the rigid wires 29 can also run straight, parallel to the longitudinal axis at the distance required for the excess length of the winding thread 24.
  • the wrapping thread 24 is fed directly above the upper end of the fixed tube 19 and first led around the spirals 1 and the rigid wires 29 (FIGS.
  • the spirals are transported further by a take-off device 30 and take the wrapping thread 24 with them. Since there is now an excess length of the wrapping thread 24, the spirals 1 can be finally joined together by the take-off device 30, any protruding loops of the wrapping thread 24 slipping into the interior of the spirals. If rigid wires 29 are used which approach each other asymptotically, the excess length of the wrapping thread 24 can be increased by adjusting the thread guide 23 in such a way that it feeds the thread at a point where the two rigid wires 29 are at a greater distance from each other, ie that it is set lower.
  • the protruding loops of the wrapping thread 24 slip into the interior of the spiral even without the pull-off device 30, since they are spontaneously drawn in by the elasticity of the filling.
  • the take-off device 30 has four rollers, as can be seen in FIGS. 11a and 11d.
  • the surfaces of the rollers are shaped such that they frame the two spirals 1 as it were.
  • the spirals have an oval cross section, as is generally the case with spiral belts, in particular when they are used as paper machine sieves.
  • the two opposite rollers, which act on the long sides of the spirals, therefore have cylindrical surfaces, while the two opposite rollers, which act on the short sides (head arches) of the spirals 1, have concave surfaces and are similar to pulleys.
  • the spirals 1 bound together by means of the wrapping thread 24 can now be further processed into a spiral band.
  • the wrapping thread 24 ensures that the filling cannot be distributed over the entire cross section of the interior of the spiral, but that the area into which the next spiral has to be inserted remains free. This is a considerable advantage, since otherwise there are always considerable difficulties in inserting filled spirals into one another.
  • the wrapping thread 24 is made of such a material that it can be easily removed later.
  • Thin polypropylene or polyethylene threads are particularly suitable because this material melts when the spiral band is fixed due to its low melting point.
  • water soluble threads e.g. from Solvron are suitable.
  • the finished spiral tape then only has to be subjected to a hot water treatment in which the winding thread dissolves.
  • Fig. 1 The principle of the device shown in Fig. 1 can also be reversed by not filling the spiral is screwed in, but the spiral is wrapped around the filling material.
  • the coils 6 and 7 are replaced by a jug containing the spiral.
  • the filling material is passed through the tube 2.
  • the entry angle alpha between the spiral and the filling must then be selected to be very small.
  • two of the devices shown in FIG. 1 are provided for introducing the filling material, the two filled spirals then being brought together as shown in FIG. 7 and being wrapped by means of the devices shown in FIGS. 8 and 11a.
  • the filling does not undergo torsion, it can also consist of a ribbon thread or foil strips, which later run flat in the spiral.
  • a particularly advantageous filling material consists of a woven or braided hose 31. If a hose 31 is introduced into a spiral 1 as filling material, it tries to assume its normal round cross section and therefore nestles very well against the inside of the spiral 1, as shown in FIG Fig. 12 is shown. For this it is necessary that the outer circumference of the hose 31 is equal to the inner circumference of the spiral 1. Hoses 31 are so advantageous as filling material because on the one hand they completely fill the interior of the spirals 1 and on the other hand they offer hardly any resistance when the spirals 1 are joined together. FIG. 13 shows how the tubes 31 deform when the spirals 1 are joined.
  • hoses 31 as filler material reduce the air permeability of a spiral tape more than with filler material in the form of Yarn, monofilament or ribbon is possible. This difference is shown graphically in FIG. 14.
  • sections A and B are filled with round or flat filling material.
  • the unfilled zone Z is relatively large, since only the part between the head arches of the preceding spiral and the subsequent spiral can be filled.
  • areas C are filled with tubular filler material.
  • the unfilled zone Z is much smaller here because the hoses 31 partially wrap around the head bends of the adjacent spirals. In this way, a lower permeability of the spiral band is achieved.
  • the filling material is introduced into the spirals before the assembly and before the final heat setting, it must be ensured that the tubes 31 introduced as filling material do not shrink during the fixing of the sieve belt. This is achieved in that the tubes 31 are subjected to a shrinking process before being introduced into the spirals 1 at a temperature of approximately 20 ° above the heat setting temperature of the sieve belt.
  • hoses 31 When using hoses 31 as filling material, there is also a reduction in the weight of the filling material and thus in the total weight of the sieve belt.
  • hoses 31 it may be expedient to provide the hose with a core 32, for example made of textile yarn, in order to prevent the hose 31 from collapsing.
  • the core 32 has a smaller shrinkage value than the tube material, so that the tube 31 shrinks more during the pre-shrinking (heat setting of the tube 31 before being introduced into the spiral 1) than the core 32 and the core 32 is therefore wavy Hose 31 deformed, as shown in Fig. 16. 15 shows the tube 31 with the core 32 before the heat setting.
  • the corrugated and deformed core 32 exerts an outward pressure on the inside of the hose 31, so that the hose 31 does not collapse even after it has been introduced into the spiral 1 and after the spiral band has been joined, and the inside of the spirals 1 as far as possible fills and lies on the head arches of the respective neighboring spirals 1.
  • the spirals 1 can be produced from a plastic monofilament with a flat cross section, so that the apparent diameter of the plastic monofilament of the spirals 1 is smaller when viewed in the direction of the spiral axis.
  • a braided hose is generally particularly suitable as filler material, irrespective of whether the filler material is already introduced into the spiral band during the manufacture of the spirals or subsequently.
EP83107399A 1982-07-27 1983-07-27 Bande à chaínons Ceased EP0101575A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823228033 DE3228033A1 (de) 1982-07-27 1982-07-27 Spirale grosser laenge zur herstellung eines spiralbandes und verfahren und vorrichtung zum einbringen von fuellmaterial in diese spiralen
DE3228033 1982-07-27

Publications (2)

Publication Number Publication Date
EP0101575A2 true EP0101575A2 (fr) 1984-02-29
EP0101575A3 EP0101575A3 (fr) 1986-02-05

Family

ID=6169447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107399A Ceased EP0101575A3 (fr) 1982-07-27 1983-07-27 Bande à chaínons

Country Status (12)

Country Link
US (2) US4564992A (fr)
EP (1) EP0101575A3 (fr)
JP (1) JPS5930951A (fr)
AU (2) AU555724B2 (fr)
BR (1) BR8303982A (fr)
CA (1) CA1235932A (fr)
DE (1) DE3228033A1 (fr)
ES (2) ES524457A0 (fr)
FI (1) FI832147L (fr)
NO (1) NO832123L (fr)
NZ (1) NZ205050A (fr)
ZA (1) ZA834183B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0666366A1 (fr) 1994-02-04 1995-08-09 SITEG Siebtechnik GmbH Tissu à hélices ayant une faible perméabilité et son procédé de fabrication
CN102605550A (zh) * 2012-01-04 2012-07-25 韩百峰 编织机自动填充送料装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8302118D0 (en) * 1983-01-26 1983-03-02 Scapa Porritt Ltd Link belts
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CH382987A (de) * 1960-03-08 1964-10-15 Sohr Hans Ulrich Vorrichtung zum Herstellen fortlaufender Wendel aus Kunststoffdrähten, insbesondere für die Weiterverarbeitung zu Reissverschluss-Gliederreihen
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ZA834183B (en) 1984-03-28
AU6182486A (en) 1986-12-18
US4650709A (en) 1987-03-17
EP0101575A3 (fr) 1986-02-05
ES280047Y (es) 1985-07-01
BR8303982A (pt) 1984-04-24
ES8501472A1 (es) 1984-12-01
CA1235932A (fr) 1988-05-03
AU1719183A (en) 1984-02-02
US4564992A (en) 1986-01-21
DE3228033A1 (de) 1984-02-02
AU555724B2 (en) 1986-10-09
NZ205050A (en) 1988-05-30
ES524457A0 (es) 1984-12-01
FI832147L (fi) 1984-01-28
JPS5930951A (ja) 1984-02-18
NO832123L (no) 1984-01-30
FI832147A0 (fi) 1983-06-14
ES280047U (es) 1984-12-16

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