EP3577260B1 - Deckelstabgarnitur mit einer detektionsvorrichtung - Google Patents

Deckelstabgarnitur mit einer detektionsvorrichtung Download PDF

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Publication number
EP3577260B1
EP3577260B1 EP17821807.9A EP17821807A EP3577260B1 EP 3577260 B1 EP3577260 B1 EP 3577260B1 EP 17821807 A EP17821807 A EP 17821807A EP 3577260 B1 EP3577260 B1 EP 3577260B1
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EP
European Patent Office
Prior art keywords
clothing
layer
foundation
needles
contact
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.)
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Application number
EP17821807.9A
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German (de)
English (en)
French (fr)
Other versions
EP3577260A1 (de
Inventor
Andreas Sobotka
Christoph Leinders
Dietmar Flock
Robert Pischel
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.)
Truetzschler Group SE
Original Assignee
Truetzschler Group SE
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Publication date
Application filed by Truetzschler Group SE filed Critical Truetzschler Group SE
Publication of EP3577260A1 publication Critical patent/EP3577260A1/de
Application granted granted Critical
Publication of EP3577260B1 publication Critical patent/EP3577260B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/86—Card clothing; Manufacture thereof not otherwise provided for with flexible non-metallic backing

Definitions

  • the invention relates to a set and a flat bar intended for it.
  • Such sets are known per se. They essentially comprise a foundation through which U-shaped and groove-like clothing needles are inserted. The free ends of the clothing needles protrude from a corresponding side of the foundation and interact with a clothing that is arranged, for example, on a drum roller. Due to the extremely small distances between the two sets of clothing (for example 0.2 mm), thermal deformations, for example due to operation or the ambient temperature, can result in their set needles coming into mechanical contact with one another. This can lead to excessive mechanical stress and possibly damage to a respective set.
  • an electrically conductive rubber layer is used, through which the needles are inserted.
  • the rubber layer has the disadvantage that the electrical resistance is enormous is high (in the range of 100 ⁇ to 35 k ⁇ ). This means that, in particular, the contact between a single clothing needle and the clothing interacting with it can only be detected with relatively high voltages. High voltages lead to electrical fields when the sets are spaced apart from one another, which can cause sparks to form and thus ignite the fiber material located there. In addition, this is too high a resistance to enable reliable and sensitive contact detection.
  • a flat bar with an electrically conductive set in which the clip fastener arranged on the side of the flat bar simultaneously pierces the foundation from below and the electrical contact is transferred from the individual needles to the flat bar.
  • the disadvantage is that the flat bars in the revolving lid can touch each other and therefore the contact recognition is not clear.
  • the object of the invention is to improve the detection of contact between two interacting sets.
  • a set which has set needles and a foundation in a known manner.
  • the clothing needles are arranged continuously through the foundation.
  • the foundation holds the clothing needles in position.
  • the clothing needles protrude from the foundation on a first side.
  • the set also has a fastening section. This is designed to attach the clothing to a holder of a spinning preparation machine.
  • an electrical connection section is provided. This is formed outside the fastening section or integrated into it and designed to electrically contact the holder, or at least the spinning preparation machine, when attached to the holder. i.e. the fastening section can be optimized to hold the set on the holder.
  • the fastening section can be magnetized, which can greatly reduce or even prevent its electrical conductivity, depending on the material.
  • the set has an electrical coupling section which is designed to electrically couple at least one of the set needles to the connection section. This creates an electrical coupling of the at least one clothing needle to the outside in relation to the clothing, regardless of the method of attachment of the clothing
  • the coupling section preferably comprises an electrically conductive layer. This is arranged on a second side of the foundation facing away from one side of the foundation. The arrangement is such that the electrically conductive layer electrically contacts the at least one clothing needle on the second side of the foundation.
  • the layer is a component of the foundation, with the clothing needles being arranged through the layer to make electrical contact with it.
  • the electrically conductive layer comprises a textile fabric that has electrically conductive threads. The electrical threads can come into electrical contact with one another directly or indirectly via each of the sets.
  • the clothing needles In the case of indirect contact, the clothing needles only have to be arranged in such a way that they each electrically contact one of the threads, which increases the freedom in the positioning of the individual clothing needles. Significantly fewer relatively expensive threads with electrical conductivity have to be used in the textile, which has a positive effect on manufacturing costs.
  • the electrically conductive threads extend essentially along the longitudinal extent of the clothing. This has the advantage that metal-coated weft threads, for example, which can be spaced apart from one another, can be used as threads.
  • the set also has an electrically conductive contact element. This is arranged so that it electrically contacts the electrically conductive layer in such a way that the contact section is electrically coupled to all threads.
  • the contact element comprises a connection section that is designed to electrically contact an element that is external to the set. i.e.
  • the connection section enables the clothing needles to be electrically coupled to, for example, an external monitoring circuit. This makes it possible to connect the threads to the electrical coupling with the clothing needles and to be able to optimize each other. In addition, this makes it possible to establish an electrical coupling of the clothing needles to one another and to the outside in relation to the clothing with a very low electrical resistance. This enables significantly lower tensions for monitoring the clothing needles. All needles in the set are in electrical contact with one another and have an external electrical connection. In addition, the risk of sparking between the clothing needles in contact is significantly reduced or even avoided.
  • the clothing needles can be designed as hooks with a groove-like and U-shaped cross section.
  • the set needles are pierced from the second side of the foundation through the foundation in the direction of the first side in such a way that they rest with the bottom of the groove on the second side of the foundation. I.e. The classic training of clothing needling is still possible.
  • the threads can be arranged in such a way that at least the groove base or the needle sections of a clothing needle that adjoin the groove base and form the actual needles with their free ends electrically couple or couple several of the electrically conductive threads to one another. This enables, in particular, the indirect electrical coupling of the electrically conductive threads to one another, simply by producing the needling in a conventional manner.
  • the fastening section can be formed on a side of the foundation facing away from the first side. i.e.
  • the fastening section can be arranged in a mechanically protected manner when it is attached to the holder, which benefits operational safety.
  • Each of the aforementioned sets preferably has a holding element.
  • the holding element is formed on a side of the foundation facing away from the first side. It can be designed to be electrically insulating or arranged to be electrically insulated from the clothing needles.
  • the holding element is designed to be attached to a holder of a spinning preparation machine. In the simplest case, the holding element is formed by a magnetic plate, via which the clothing is held on the spinning preparation machine. The way the set is fastened can also be retained.
  • the electrically conductive layer of each of the aforementioned sets can comprise electrically conductive adhesive. This enables electrical contact between the clothing needles without having to pay attention to their arrangement.
  • the contact element is formed by an electrically conductive part.
  • this part is designed to penetrate into the electrically conductive layer when it is placed on a side of the foundation facing away from the first side, in such a way that the part comes into electrical contact with the layer.
  • the contact element further comprises a connection section which forms an outside of the set. This creates a simple way to couple the clothing needles with an externally connected monitoring circuit.
  • the electrically conductive part has piercing contacts. This is a particularly simple way to electrically contact the contact element simply by placing it on the foundation and pressing it into it with the set of needles.
  • Each of the aforementioned sets has a back plate.
  • the back plate is attached to the layer on the side facing away from the first side of the foundation directly or indirectly via an intermediate layer, preferably designed as an adhesive layer.
  • the back plate can take on the function of ensuring the dimensional stability of the set.
  • the back plate forms the aforementioned connection section.
  • Any set provided with a back plate can electrically contact the foundation or layer due to its shape and attachment. I.e. Attaching the back plate to the other set already enables electrical contact. This allows for easy assembly, as it can be implemented using conventional assembly steps, for example in the form of a simple placement.
  • At least one electrically conductive connection element can be provided on the back plate, for example in the form of a molded locking projection, so as to electrically contact the back plate.
  • the connection element is provided in such a way that the back plate is electrically coupled to the layer via this at least one connection element. This enables the back plate to be manufactured in a conventional manner.
  • the additional connection element can then be attached either to the back plate or to the other fittings and contacts the aforementioned electrically conductive layer. This is the only way it is possible for the back plate to be electrically conductive after assembly Layer is coupled. This means that the manufacturing process only needs to be expanded minimally.
  • the back plate can be designed to be mechanically attached to the foundation or the electrically conductive layer in a stationary manner due to its shape. This can make holding elements such as an adhesive layer unnecessary, so that the complexity of the construction and possibly also the costs can be balanced or even reduced.
  • at least one holding element can be provided on the back plate in such a way that the back plate is attached in a stationary manner to the foundation or to the conductive layer via the at least one holding element. I.e. the back plate can still be manufactured conventionally.
  • connection element can simultaneously form one of the at least one holding element.
  • the connecting element and holding element are formed by means of one and the same structural element, such as a locking projection made of metal. This reduces the number of additional elements and thus reduces costs and simplifies construction.
  • a flat bar according to the invention has a clothing holder with a holding section and an electrically conductive clothing connection section designed to be electrically contactable to the outside with respect to the flat bar, as well as one of the aforementioned clothings.
  • the set is held stationary in or on the set holder by means of the holding section.
  • the electrical connection section of the fitting according to the invention is electrically coupled to the fitting connection section of the flat bar.
  • the fitting connection section forms the external element mentioned above in relation to the fitting.
  • the clothing holder therefore takes over one Dual function of holding and creating the electrical connection of the set to the outside.
  • the fitting connection section preferably has a fitting contact section, by means of which the connection section of the fitting is electrically contacted, preferably by clamping. This ensures secure electrical contact with the set.
  • the contact section also includes a connection section. This connection section is electrically coupled to the clothing contact section and is formed by means of a fastening section of the clothing holder.
  • the fastening section is designed to fasten the flat bar on or in a holding element of a spinning preparation machine.
  • the fastening section also takes on two functions of attaching (and holding) the clothing to the clothing holder and electrically coupling the clothing holder to the clothing or its clothing needles, which keeps the structure simple, simplifies assembly and helps maintain the external dimensions of the clothing holder.
  • Figure 1 shows an arrangement with a holder 30 and a set 10 which is designed according to a first embodiment of the invention.
  • the holder 30 comprises an adhesive layer 33 to which a magnetic strip 34 is attached.
  • the set 10 has a back plate 90 made of magnetizable material such as steel on a side facing the holder 30. The set 10 is mounted or held on the holder 30 via this back plate 90.
  • the back plate 90 is attached to an electrically conductive layer 13 by means of an intermediate layer 14, which is designed here as an adhesive layer.
  • an intermediate layer 14 which is designed here as an adhesive layer.
  • a foundation 12 of the set 10 is now attached, which can, for example, consist of several layers or layers of fabric glued together.
  • the foundation 12 is usually made up of five layers of cotton fabric. Since the basis for the foundation 12 and the layer 13 can be cotton, the mechanical properties of the clothing 10, which are important for processing (e.g. carding) sliver material, are not affected.
  • the electrically conductive elements can be integrated into a flat textile, whereby the textile itself becomes the electrically conductive element and not just simply forms a carrier material. This has the advantage that no rigid electrical parts are required, which could have a negative effect on the electrical coupling.
  • U-shaped and therefore groove-like clothing needles 11 are pierced from a side of the layer 13 facing the holder 30, through it and through the foundation 12 in such a way that they protrude from a side of the foundation 12 facing away from the holder 30.
  • the clothing needles 11 are surrounded by the adhesive layer 14 and are therefore preferably electrically insulated from the back plate 90.
  • the layer 13 means that all clothing needles 11 are electrically coupled to one another. This makes it possible to provide an external electrical connection (not visible here) on the clothing 10 in order to feed a voltage into the clothing needles 11 or to take it from there.
  • the adhesive layers 14, 33 provide electrical insulation between the clothing needles 11, the back plate 90 and the holder 30 here in the form of a flat bar.
  • Figure 2 shows a holder 30 with a set 10, which is designed according to a second embodiment of the invention.
  • the holder 30 is, for example, the same as the holder 30 in Figure 1 built up.
  • the set 10 also includes, by way of example, a back plate 90, via which the set 10 is attached to the corresponding magnetic strip 34 of the holder 30.
  • the last cotton fabric layer in the direction of the holder 30 is replaced by an electrically conductive textile or an electrically conductive adhesive (coating) as a layer, which thus replaces the two layers 13 , 14 forms an electrically conductive layer.
  • the layer is therefore formed by means of an electrically conductive fabric layer or adhesive layer 15.
  • this in turn surrounds the clothing needles 11 or comprises individual electrically conductive threads which are arranged in the layer 15 in such a way that they are electrically insulated from the back plate 90.
  • the layer 15 is also cotton-based, so that good adhesion between all fabric layers of the foundation 12, the fabric layer 15 and the back plate 90 is guaranteed.
  • the layer 15 is preferably a fabric into which metallic and/or graphite-based threads are woven or the threads are surrounded by such materials, advantageously twisted with them. This achieves a very low electrical resistance of the textile, ideally less than 50 ⁇ per running meter, i.e. less than 50 ⁇ /m.
  • the clothing needles 11 are in turn pierced through the foundation 12 and emerge from the foundation 12 on the side facing away from the holder 30.
  • Figure 3 shows an exploded view of the set 10 from Figure 1 .
  • the foundation 12 with layer 13 is shown as a block and with a row of clothing needles 11 pierced through it, a connecting part 16, the adhesive layer 14, a connecting part 20 and the back plate 90.
  • the connecting part 20 is J-shaped in cross section. Individual piercing contacts 21, which form the short free leg of the J, run parallel to a leg 22 which forms the long free leg of the J. A leg 23 connects these two elements 21, 22 to one another.
  • the piercing contacts 21 are pierced into the block 12 + 13 when the connecting part 20 is mounted, so that the connecting part 20 is coupled to the electrically conductive layer 13.
  • the adhesive layer 14 is preferably designed to be electrically insulating.
  • the connecting part 20 is therefore also electrically insulated from the back plate 90.
  • connection part 16 enables an electrical connection between the sets 11 and the electrical connection part 20.
  • Figure 4 shows the connecting part 20 in greater detail. Here you can clearly see the piercing contacts 21 as well as the two legs 22, 23 of the connecting part 20.
  • Figure 5a shows a partial exploded view of the entire arrangement consisting of holder 30, clothing 10 and a fastening part 40.
  • the fastening part 40 serves to attach or arrange the holder 30 including the clothing 10 attached to it on a spinning preparation machine, not shown.
  • the set 10 is shown moved slightly out of the holder 30.
  • the holder 30 has a receiving groove 31, which preferably runs along its longitudinal extent, into which the set 10 engages in a form-fitting manner with a corresponding projection 17.
  • This projection 17 is not formed on the opposite side pointing backwards here. This makes it possible to ensure that the set 10 can only be inserted into or mounted on the holder 30 in a single position.
  • assembly is very simple: First, the projection 17 is inserted into the groove 31, and then the set 10 inserted in this way is pivoted around the projection 17 as an axis of rotation in the direction of the holder 30 until the back plate 90 rests on the magnetic strip 34.
  • connecting part 20 is indicated, which is formed at the front end here and possibly also the rear end of the set 10.
  • the front fastening part 40 here has, on its side facing the holder 30, two rod-like parts 41, which are inserted into corresponding receiving openings 32 of the holder 30, preferably in a form-fitting manner, possibly also in a clamping manner. Alternatively or additionally, a non-positive connection is also conceivable, for example by means of gluing. Furthermore, a locking part 60 is provided in the middle extends in the same direction as the ends of the rods 41, 41 pointing towards the holder 30.
  • the locking part 60 engages with a locking lug 62 protruding in the direction of the holder 30 in a positive and/or non-positive manner into a sleeve 1, which is formed in the interior of the holder 30 or is attached to it.
  • the locking lug 62 is designed to be elastic so that it can deform and can therefore engage in a force-fitting manner with the corresponding inner surface of the sleeve 1.
  • the fastening part 40 has a base body 43 in which the rods 41, 41 are formed or arranged, and in which the locking part 60 is also inserted, as explained in more detail below.
  • connection part 20 there is a contact part 50 arranged on a side of the fastening part 40 facing the holder 30, which advantageously electrically contacts both rods 41, 41.
  • the contact part 50 is further designed so that it also electrically contacts the connection part 20 in the assembled state.
  • the contact part 50 has a stop surface 54 on the side facing the fitting 10, with which the contact part 50 comes into contact on the end face of the connecting part 20 facing it when the fastening part 40 is mounted. I.e. After mounting the set 10 in the holder 30, the two parts 20, 50 touch each other with their outer contact surfaces, which can be sheet-like, and thereby establish an electrical coupling between the set 10 and the fastening part 40.
  • the fastening part 40 has a projection 45, which has the same function as the projection 17 of the set 10. Since the projection 45 is only formed on a single side, a rotation-proof installation of the fastening part 40 with respect to the holder 30 is also guaranteed here.
  • the contact part 50 can also be integrated into the fastening part 40, which is preferably made of plastic, for example during injection molding.
  • Figure 5b shows one too Figure 5a Similar view, except that the components 50, 60 of the fastening part 40 are shown in exploded view with respect to this. Furthermore, the holder 30 is moved upwards here and the set 10 is thus shown exposed. The set 10 is again shown in an exploded view with respect to its individual components.
  • the sleeve 1 is placed on a rod-like part 2, for example pressed or screwed on. Of course, it can also be designed in one piece with the rod 2.
  • the rod 2 itself is held stationary in a corresponding receptacle 35 of the holder 30.
  • the rod 2 is missing and the sleeve 1 is arranged in a stationary manner directly in the holder 30, for example by being screwed into the receptacle 35.
  • the sleeve 1 can also be formed in one piece with the holder 30.
  • the locking part 60 has at its end facing away from the holder 30 a locking projection 61, which in the assembled state is designed to extend transversely to the plane of a respective set of elements 12 + 13 (foundation 12 plus layer 13), 14, 90.
  • the projection 61 only points upwards and, in the assembled state, engages in a corresponding recess 47 of the fastening part 40.
  • the locking part 60 On the lower side opposite the projection 61, the locking part 60 has a corresponding support surface 63.
  • a projection 61 can also be formed on this side, which now engages in a corresponding recess 47 on the underside of the fastening part 40.
  • the projection 61 can be designed like a sawtooth, with the tooth face pointing in the direction of the fastening part 40. The locking part 60 thus locks onto the fastening part 40.
  • Figure 5c shows one too Figure 5a Similar view, only now seen from the holder 30 in the direction of the fastening part 40.
  • the rods 41, 41 also protrude from the fastening part 40 towards the rear facing back.
  • the contact part 50 preferably encloses the fastening part 40 on its end face pointing in the direction of the set 10 and also on the side pointing upwards here.
  • the stop surface 54 of the contact part 50 pointing in the direction of the set 10 comes into electrical contact with the connecting part 20, which is not visible here.
  • the locking part 60 ensures that after the fastening part 40 has been inserted, it is prevented from moving away from the fitting 10 and the holder 30 in the direction of the longitudinal extension.
  • the fastening part 40 is securely held on the holder 30, so that electrical contact between the clothing needles 11 and the rods 41, 41 is ensured.
  • Figure 6 shows the contact part 50 in greater detail. It has two contact surfaces 53 with which the contact part 50 is attached to one in Figure 5b in the direction of the set 10 facing contact surface 44 and an upward-facing side of the fastening part 40, not shown here.
  • Exemplary the contact part 50 has an exemplary circular recess 52 on a side facing away from the fitting 10, with which the contact part 50 has a positive fit on an in Figure 5c recognizable, corresponding, arc-like surface 48 of the fastening part 40 comes to rest.
  • the recess 52 can also be omitted.
  • the contact part 50 has two arms or projections 51 serving as contact tongues. They extend from the other contact part 50 perpendicular to the longitudinal extent of the fastening part 40 or the rods 41, 41 in the direction of those same rods 41, 41.
  • the contact tongues 51, 51 are designed so that they extend away from each other towards their free ends. This leads to the projections 51, 51 being pushed somewhat towards one another by the rods 41, 41 during assembly, i.e. when the contact part 50 is pushed on along the longitudinal extent of the rods 41, 41 in the direction of the fastening part 40.
  • the contact tongues 51, 51 are preferably elastic, so that they are resiliently preloaded. This ensures secure electrical contact between the contact part 50 and the rods 41, 41.
  • the two projections 51, 51 therefore touch a respective one of the rods 41, 41 in order to establish electrical contact.
  • the shape and material of the projections 51, 51 are designed in such a way that they represent spring elements so that contact with the rods 41, 41 is ensured, which in turn offers an electrical connection in the direction of the spinning preparation machine, not shown.
  • the fastening part 40 has a preferably continuous opening 42 in a central region of the base body 43, which serves as a driving opening for the fastening part 40 and thus for the holder 30 attached thereto, including the set 10.
  • Figure 7 shows the arrangement of Figure 5 in cross section along a plane that extends along the longitudinal extent of both the entire arrangement and the recess 42.
  • the engagement between the locking part 60 or its locking lug 62 (not shown here), the sleeve 1 and the rod 2 can be seen particularly clearly.
  • the holder 30, the clothing needles 11 of the clothing 10, the contact part 50 and the fastening part 40 with a contact element 46 can be seen.
  • Figure 8 shows one too Figure 7 Modified version also in section with holder 30, fastening part 40 and set 10.
  • the contact part 50 is plate-like in the area of the connection to the fitting 10 and has an end 55 that bends in the direction of the holder 30.
  • the fastening part 40 and the holder 30 are pushed together with the set 10, this rests on an electrically conductive layer of the set 10 in an electrically contacting and resiliently biased manner.
  • the magnetic strip 34 is slightly shortened in length in relation to the foundation 12. This also creates an electrical contact between the set 10 and the fastening part 40 in a simple manner.
  • Figure 9 shows a holding element 70 as part of a fixed arrangement of a spinning preparation machine, here a card.
  • the holding element 70 is part of a lid guide 80, along which a plurality on flat bars or arrangements, each with holder 30, set 10 and fastening part 40, can be moved during operation.
  • the fastening part 40 is preferably provided at both ends of the holder 30, so that the holding element 70 is formed not only on the left side of the holder 30 but also on its right side.
  • the exemplary electrically conductive holding element 70 has a preferably circumferential and groove-like recess 74 on its side facing the respective fastening part 40.
  • the holding element 70 can be contacted by the rods 41, 41 of the respective fastening part 40 at the end remote from the associated holder 30. An electrical coupling is thus established from the holding element 70 to the clothing needles 11 of the respective clothing 10.
  • the rods 41, 41 advantageously serve for non-positive and/or positive engagement with holding and/or drive means, not shown here, of the spinning preparation machine. I.e.
  • the respective holder 30 with clothing 10 can be attached to the spinning preparation machine solely by means of the rods 41, 41.
  • the holding element 70 further comprises a fastening element which is formed by means of a rod section 71 and nuts 72 with stops 73 arranged thereon.
  • the respective fastening part 40 rests on the strip 3 by means of the contact element 46.
  • This is preferably made of plush, but can also be designed to be electrically conductive. In the latter case, the aforementioned electrical coupling occurs between the set 10 and the holding element 70.
  • FIG 10 shows the flat guide 80 as part of a spinning preparation machine in two views and without flat bars.
  • the cover guide 80 is shown in detail and, in addition to the holding element 70, includes a bearing shell 81 for a roller.
  • the holding element 70 is preferably attached to the spinning preparation machine, for example to its frame, by means of rods 71. By changing the positions of the screws 72, the holding element 70 can be changed in its assembly position in relation to the other spinning preparation machine. All other components of the spinning preparation machine that are not essential to the invention have been omitted for the sake of clarity.
  • Figure 10b shows the lid guide 80 in a side view.
  • the cover guide 80 has two bearing shells 81.
  • a fastening section 82 is formed on each of the two mutually facing edges of these two bearing shells 81.
  • each section 82 is formed by means of a block-like projection extending perpendicular to the plane of the sheet towards the viewer.
  • the set 10 (not shown here) or the flat bars holding them move along a circumferential path, namely in a first section from an initial position to an end position along the set interacting with it, for example a drum roller, and in a second section in a continuous manner Movement from the second position back to the first position.
  • this first section is located between the two fastening sections 82, 82.
  • the rods 41, 41 have a predetermined distance from the holding element 70, which is achieved by means of the strip 3 and the contact element 46, not shown, of the respective fastening part 40.
  • an electrically conductive and preferably flexible contact band 5 shown here in the detail at the right end, runs along it.
  • the contact band 5 is arranged such that its distance from the holding element 70 is less than a maximum external dimension of the rods 41, 41 their ends facing away from the respective holder 30 and facing the contact band 5 in the contact area with the contact band 5.
  • the respective rods 41, 41 thus press the contact band 5 away from the holding element 70, so that a secure electrical contact between rods 41, 41 and contact band 5 is ensured.
  • the contact band 5 can be either a metal band or a braided metal band. It is stationary at both ends in relation to the spinning preparation machine, preferably attached to the holding element 70 or the respective fastening section 82 provided on it.
  • Each fastening section 82 serves as a deflection for the contact band 5 and/or as a lock for a respective end of the contact band 5. This is, for example, coming from the first section, guided around the respective fastening section 83 to a stop 83, 84.
  • the stop 84 for example, this is preferably with a band tensioning device 85 provided, to which the facing end of the contact band 5 is attached, and with the help of which the contact band 5 is tensioned.
  • the fastening sections 82, 82 preferably run essentially parallel to the strip 3 on their edges facing the strip 3. They have a distance from the strip 3 which is dimensioned such that the ends of the rod 41 contacting the strip 3 along the strip 3 formed gap between contact band 5 and strip 3 can happen. If the respective fastening stop 82 is resiliently mounted, this distance can also be smaller.
  • the contact band 5 which is immovable in relation to the flat bars, has no fixed connection to the rods 41, it functions as a sliding contact.
  • the material of the contact band 5 is softer than the material of the rod 41, so that the wear is on the side of the contact band 5, which is easier to replace.
  • the fastening sections 82, 82 to which the contact strip 5 is fastened it can be connected with a cable to an evaluation unit of a monitoring circuit.
  • the contact band 5 moves away from the holding element 70.
  • the contact band 5 thus creates a contact band 5 with the holding element 70 in the area of the first position Type of entry funnel into which the rods 41, 41 of the respective fastening part 40 automatically enter.
  • the rods 41, 41 advantageously lift the contact strip 5 from the holding element 70, so that it is pre-tensioned and thus securely in electrical contact with the respective rods 41, 41 stands.
  • the contact band 5 forms a kind of exit funnel. This makes it possible to move the set 10 in both directions of movement.
  • a respective one of the two fastening sections 82, 82 is located at these positions.
  • the contact band 5 does not have to electrically contact the set 10 over its entire travel path. This makes it possible, when detecting a contact using the monitoring circuit, to only have to look at the sets 10 that are currently in the first section.
  • Figure 11 shows a detail in a longitudinal section of a set 10 according to a third embodiment of the invention. It is similar to the one in Figure 1 Set 10 shown.
  • needles 100 are, for example, with their tips 101 in front from the side of the back plate 90 facing away from the clothing needles 11 through corresponding through openings 91 into the coupling layer 12 + 13. Presso technology can be used for this purpose, for example.
  • the through openings 91 extend from the side of the back plate 90 facing away from the clothing needles 11 in the direction of the clothing needles 11. They can, for example, be prefabricated by drilling or only arise when the needles 100 are driven in. As a result, the intermediate layer 14 also has unmarked through openings. i.e. When assembling, preferably after fastening (for example by gluing) the back plate 90 to the coupling layer 12 + 13, the needles 100 are pierced through the through openings 91 into the coupling layer 12 + 13.
  • the needles 100 are welded to the back plate 90, for example by means of resistance welding.
  • the needles 100 thus advantageously serve not only for electrical coupling but also for mechanically holding the back plate 90 on the intermediate layer 14. This does not necessarily have to be designed to be adhesive and can also be omitted in extreme cases.
  • the intermediate layer 14 is advantageously designed to be elastic, so that the back plate 90 and the coupling layer 12 + 13 are mechanically decoupled from one another to a certain extent, making the set 10 more robust.
  • Another advantage of this embodiment is that the actual electrical coupling takes place after the other fittings 10 have been manufactured. If the electrical coupling is not necessary, only the last assembly step is omitted.
  • this condition can be easily corrected by removing the protruding sections of the needles 100, for example by grinding.
  • needles 100 instead of needles 100, all other means, for example screws, are of course possible.
  • the needle 100 shown on the left according to a first variant has smooth outer walls so that it is simply fixed by static friction.
  • the needle 100 shown on the right according to a second variant has two (locking) projections 102 which are exemplarily triangular in cross section on the right and left. These are designed in such a way that they grip behind the adhesive layer 14 (left projection 102) or the back plate 90 (right projection 102) and thus prevent the needle 100 from moving out of the other clothing 10 again. Instead of several local projections 102, one or more circumferential projections 102 can also be formed.
  • the cross-sectional shape can also be different, provided the holding function is fulfilled.
  • Figure 12 shows a modification of the set 10 from Figure 11 in two variants, also in longitudinal section and in detail.
  • the needles 100 are not pushed through the back plate 90 here but are attached to the side facing the clothing needles 11, for example by welding.
  • needles 100 are preferably welded to a sheet-like holding element 4.
  • the holding element 4 itself is attached to the side of the back plate facing the clothing needles 11.
  • the needles 100 penetrate into the same coupling layer 12 + 13 and electrically contact this and/or some clothing needles 11, i.e. they are coupled to these elements.
  • the holding elements 4 with attached needles 100 are pressed into the coupling layer 12 + 13 and, if necessary, glued to it (via the adhesive layer 14). This creates a flat contact surface for the back plate 90.
  • the back plate 90 is then placed on and secured to at least one holding element 4 by means of the adhesive layer 14 and/or by means of, for example, welding.
  • the holding element 4 is missing.
  • the respective needle 100 contacts the back plate 90 itself.
  • the assembly can be carried out as in the first variant.
  • the needle 100 shown on the right has preferably elastic, barb-like projections 102, which prevent the needle 100 from moving out of the coupling layer 12 + 13.
  • additional fastening such as gluing, which means that if the back plate 90 is fastened (for example by welding) to the needles 100 (only one of which is shown), the adhesive layer 14 could be omitted.
  • Another advantage is that both variants can be easily integrated into the conventional manufacturing process.
  • Figure 13 shows a detail in longitudinal section of a set 10 according to a fourth embodiment of the invention in two variants.
  • the basic structure corresponds to the second embodiment of the invention.
  • This embodiment is based on soldering the coupling layer 12 + 13 to the back plate 90.
  • the back plate 90 has prefabricated through openings 91, which are similar to those of the previous one Embodiment are formed. After attaching or fixing the back plate 90 onto the layer 14 arranged underneath, the through openings 91 are filled with (viscous) liquid metal solder. Material of the intermediate layer 14 preferably evaporates, and the hardening solder connects the coupling layer 12 + 13 to the back plate 90 in a materially bonded manner.
  • the intermediate layer 14 preferably has flux, which promotes the formation of the cohesive solder connection.
  • the first variant shown provides that the coupling layer 12 + 13 is recessed in the soldering area. This creates a kind of collecting tray for the filled solder. and improves its absorption.
  • the back plate 90 has a projection 94 which is formed all around in the edge region of the through opening 91.
  • This is designed so that the hardened solder 110 reaches behind it. After hardening, the solder 110 therefore forms two sections, i.e. projections 111, 112, which are spaced apart from one another and, for example, are again circumferential and protrude towards the edge region of the through opening 91, between which a recess 113, which is also circumferential here, is created.
  • the projection 94 engages in this recess 113, so that the hardened solder at least partially fixes the back plate to the other set 10.
  • the side of the coupling layer 12 + 13 facing the back plate 90 is designed to be the same everywhere, here.
  • Figure 14 shows a detail in a longitudinal section of a set 10 according to a fifth embodiment of the invention, also in two variants.
  • the basic structure also corresponds to the second embodiment of the invention.
  • the back plate 90 is first attached to the intermediate layer 14 or placed fixed on it.
  • the back plate 90 is pierced or pierced from the side facing away from the clothing needles 11 in the direction of the clothing needles 11.
  • a through opening 91 is therefore formed again.
  • the resulting burrs of the piercing which protrude in the direction of the graniture needles 11, penetrate into the coupling layer 12 + 13 and connect them at least electrically to the other back plate 90.
  • These burrs are in the example shown as ring-like piercing projection 92 is formed.
  • the advantage is that no additional elements such as needles 100 and no additional materials such as soldering material are required.
  • the back plate 90 is not pierced but rather pressed into the coupling layer 12 + 13.
  • no backing sheet material is removed but instead forms a recessed bottom section 93 arranged in the middle of the coupling layer 12 + 13.
  • the resulting bottom section 93 displaces the material of the intermediate layer 14 and, for example, also material of the coupling layer 12 + 13 and thus reaches the coupling layer 12 + 13 in attachment. This creates electrical contact, which electrically couples the clothing needles 11 to the back plate 90.
  • Figure 15 shows a detail in a longitudinal section of a set 10 according to a sixth embodiment of the invention.
  • the back plate 90 and the intermediate layer 14 are cut free in sections here at one end, so that the coupling layer 12 + 13 is exposed in this section.
  • the connecting part 16 explained above penetrates the coupling layer 12 + 13, but is accessible at least on the side of the coupling layer 12 + 13 facing away from the clothing needles 11.
  • An electrical coupling element can be connected there.
  • an electrical line can be soldered at one end and to the back plate 90 at the other end.
  • Figure 16 shows a detail in a longitudinal section of a set 10 according to a seventh embodiment of the invention.
  • the electrical coupling between the back plate 90 and the coupling layer 12 + 13 takes place by punching out a part of the back plate 90 in the direction of the clothing needles 11. This in turn creates a through opening 91.
  • the resulting projection 92 which protrudes in the direction of the clothing needles 11, penetrates into the coupling layer 12 + 13 and thus realizes the electrical contact from the back plate 90 to the clothing needles 11.
  • the projection 92 therefore forms a piercing projection.
  • the shape of the projection 92 is triangular as an example. However, it can take any other form, for example in the form of a (double) locking hook. This advantageously also creates a mechanical hold on the coupling layer 12 + 13, whereby the intermediate layer 14 can be omitted or no longer has to take on a holding function.
  • the invention is not limited to the embodiments described above. They can be combined with one another or exchanged for one another in parts or in total.
  • the set 10 can be attached to the holder 30 in any form, for example by latching, clamping, screwing, etc.
  • a plug-and-socket combination can also be used for the electrical coupling between the set 10 and the fastening part 40.
  • the fastening part 40 can be an integral part of the holder 30 and/or the set 10. This means there is no electrical contact with each other required between set 10 and fastening part 40.
  • the fastening part 40 can be designed in any other embodiment, as long as there is electrical contact between the clothing needles 11 and a connecting element of a spinning preparation machine via the fastening part 40.
  • the lid guide 80 is also only an example.
  • the flat bar solution shown here can be used for any other type of garnish. I.e. the holder 30 does not have to be present.
  • the set 10 can be attached in a stationary manner, for example by gluing, to a roller or the like. In this case, an electrical connection between this roller and a monitoring circuit is conceivable, for example by means of electrical coupling elements, which allows an electrical coupling between parts arranged to rotate freely relative to one another.
  • the strip 3 on the holding element 70 is also only an example and can be omitted or itself designed to be electrically conductive. In the latter case, the element holding the strip 3 (here: holding element 70) would not have to be designed to be electrically conductive. It is important that electrical contact can be established between the spinning preparation machine and the clothing 10.
  • the first option for detecting an electrical contact between these two clothings is a checking circuit that is built into the clothing 10 or the Clothing needles 11 feeds a monitoring voltage. As long as it's not electrical Once contact is made with the other set, no electrical current flows and there is no (measurable) current flow. If an electrical contact occurs between the needles of both sets, i.e. if both sets are short-circuited with one another (at certain points), current flows from the set needles 11 via the other set, for example to a housing and / or frame of the spinning preparation machine, so that there is now a measurable current flow comes. This makes it possible to detect this electrical contact using the monitoring circuit.
  • the current flow can also flow in the opposite direction from the other clothing to the clothing needles 11.
  • an electrical voltage is applied to a drum roller, for example.
  • a short circuit occurs, which is detected. Since the lids and their fittings are not originally electrically coupled to the machine, contact monitoring cannot easily be used here.
  • an electrical contact is established between the needles 11 of a clothing 10 and a spinning preparation machine, advantageously to its electrically conductive frame. This is divided into several aspects.
  • a second possibility for a monitoring circuit is that the other set is also electrically coupled to the checking circuit via a separate electrical coupling. This enables the checking circuit not only to detect the current flow, but also, for example, to control a signal lamp via a transistor, which, for example, lights up in the case of the aforementioned electrical contact. i.e. the transistor circuit is a driver circuit for this very signaling. Such a type of circuit is very energy efficient. Alternatively or additionally, a higher-level monitoring circuit is alerted or another action is triggered.
  • the invention offers a simple possibility of implementing the electrical coupling of a clothing with a monitoring circuit connected in a spinning preparation machine or externally to it, simply by assembling the already existing components.
  • a determination of the distance between the individual sets can also be provided. There are various methods for this, so the details are omitted.
  • the monitoring circuit can be coupled, for example, via a bus control to the spinning preparation machine and thus to the respective clothing.
  • an electrical circuit can be implemented between the clothing needles 11 of the flat clothing and a clothing that interacts with it, for example in the form of a drum clothing.
  • the clothing needles 11 are at least partially exposed on the side facing the back plate 90, they are preferably in electrical contact with the back plate 90 by simply resting on them.
  • the electrical contact can be improved if at least some of these clothing needles 11 (preferably located on the edge) are applied to the back plate 90, for example with an electrical voltage. This means that these clothing needles 11 are welded locally to the back plate 90 and are therefore also mechanically connected. Due to the electrical coupling to one another using the coupling layer 12 + 13, not all clothing needles 11 have to be in direct contact with the back plate 90.
  • the connecting part 16 is at least electrically coupled to the back plate, but preferably also mechanically connected. Since the connecting part 16 at least penetrates into the electrically conductive layer 13 and is therefore electrically coupled to it, the layer 13 realizes the coupling between the clothing needles and the connecting part 16.
  • the connecting part 16 can be welded or soldered to the back plate 90 directly or indirectly via an intermediate element. Alternatively, all other types of electrical coupling are available, for example via cables and screws.
  • the connecting part 16 is designed like a needle and is pushed through the coupling layer 12 + 13 from the side facing the clothing needles 11 in such a way that it protrudes in the direction of the back plate 90.
  • the connecting part 16 is preferably designed as a staple or stapler clip, which allows piercing the coupling layer 12 + 13 using conventional stapler devices.
  • connecting parts 16 can also be provided, even distributed over the entire side of the coupling layer 12 + 13 facing away from the clothing needles 11.
  • the connecting part 16 can also have more than two tips, which improves the hold and makes the electrical coupling with the back plate 90 and the coupling layer 12 + 13 more robust.
  • the connecting part 16 can include one or more (tacker) nails.
  • the projections 101, 111, 112 can be provided on all other coupling elements such as the needles 4 and can be designed either locally or circumferentially. They can also be replaced by recesses, in which case, for example, the back plate 90 would contain a recess instead of the projection 94 or in addition to it.
  • the number and geometric arrangement or distribution of the through openings 91 or coupling elements 92, 93, 100, 110 in relation to the side of the clothing 10 (or the back plate 90) facing away from the clothing needles 11 can vary, provided that the function, i.e. the electrical coupling and/or mechanical fixing is guaranteed.
  • layers 12, 13 or 13, 14 and layer 15 can be exchanged or combined with one another.
  • the in Figure 15 The free cut shown can additionally or alternatively also be formed outside the ends of the clothing 10 and can be used in all other embodiments.
  • the invention creates a simply constructed and universally applicable possibility of realizing electrical contact between two interacting clothing sets or their clothing needles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
EP17821807.9A 2017-01-31 2017-12-01 Deckelstabgarnitur mit einer detektionsvorrichtung Active EP3577260B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017101863.8A DE102017101863A1 (de) 2017-01-31 2017-01-31 Detektionsvorrichtung an einer Spinnereivorbereitungsmaschine und dafür vorgesehene Deckelstabgarnitur
PCT/EP2017/081153 WO2018141436A1 (de) 2017-01-31 2017-12-01 Detektionsvorrichtung an einer spinnereivorbereitungsmaschine und dafür vorgesehene deckelstabgarnitur

Publications (2)

Publication Number Publication Date
EP3577260A1 EP3577260A1 (de) 2019-12-11
EP3577260B1 true EP3577260B1 (de) 2023-10-18

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EP17821807.9A Active EP3577260B1 (de) 2017-01-31 2017-12-01 Deckelstabgarnitur mit einer detektionsvorrichtung

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EP (1) EP3577260B1 (pt)
CN (1) CN110234803B (pt)
BR (1) BR112019015676B1 (pt)
DE (1) DE102017101863A1 (pt)
WO (1) WO2018141436A1 (pt)

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Publication number Priority date Publication date Assignee Title
DE102019110691A1 (de) 2019-04-25 2020-10-29 TRüTZSCHLER GMBH & CO. KG Karde
CN114836853B (zh) * 2022-05-25 2023-07-07 金轮针布(江苏)有限公司 一种防静电高握持力弹性针布的成型工艺

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0233376A (ja) * 1988-07-19 1990-02-02 Tadokoro Kimou Kk 針布用基布
EP1880164A1 (de) * 2005-05-11 2008-01-23 Maschinenfabrik Rieter Ag Berührungsloses messverfahren sowie vorrichtung an einer textilmaschine
EP1880046B1 (de) * 2005-05-11 2010-01-27 Maschinenfabrik Rieter Ag Spinnereivorbereitungsmaschine sowie berührungsloses messverfahren
DE102005050904B4 (de) 2005-10-21 2019-12-12 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine, insbesondere Karde, Krempel o dgl., zur Überwachung
DE102009013412A1 (de) * 2009-03-18 2010-09-23 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Karde für Baumwolle, Chemiefasern o. dgl., bei der mindestens ein Deckelstab mit einer Deckelgarnitur vorhanden ist
CH704982A1 (de) 2011-05-20 2012-11-30 Rieter Ag Maschf Vorrichtung zum Ausscheiden von Schmutz und Kurzfasern an einer Karde.
CH705549A1 (de) * 2011-09-16 2013-03-28 Graf & Co Ag Garnitur für einen Deckel einer Karde.
EP2743385B1 (de) * 2012-12-14 2014-07-23 Maschinenfabrik Rieter Ag Verfahren und Vorrichtung zum Überwachen von Kontakten eines sich drehenden Bauteils einer Textilmaschine
CH707682A2 (de) 2013-03-06 2014-09-15 Graf & Co Ag Fundation für eine Garnitur einer Karde.

Also Published As

Publication number Publication date
BR112019015676A8 (pt) 2022-07-05
CN110234803A (zh) 2019-09-13
EP3577260A1 (de) 2019-12-11
CN110234803B (zh) 2022-02-01
WO2018141436A1 (de) 2018-08-09
DE102017101863A1 (de) 2018-08-02
BR112019015676B1 (pt) 2023-05-16
BR112019015676A2 (pt) 2020-04-07

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