WO2015188903A1

WO2015188903A1 - Device on a spinning preparation machine, e.g. carding machine, cleaner, combing machine or similar, wherein at least one carding element is arranged opposite a covered roller

Info

Publication number: WO2015188903A1
Application number: PCT/EP2015/000798
Authority: WO
Inventors: Andreas EBENHÖH; Gerd Pferdmenges
Original assignee: TRüTZSCHLER GMBH & CO. KG
Priority date: 2014-06-13
Filing date: 2015-04-16
Publication date: 2015-12-17
Also published as: DE102014008403A1; EP3155149B1; CN106574405A; EP3155149A1; CN106574405B; BR112016028366A2

Abstract

With a device on a spinning preparation machine, for example, carding machine, cleaner, combing machine or similar, wherein at least one carding element is arranged opposite a covered roller at a distance and extends over the whole width of the roller, said carding element having a longitudinal support body which comprises a base part and a back part, a covering is fastened by force fit to the base part of the support body and at least one cavity is provided for imparting the force fit. In order to create a device which, in particular, is simple in design, in particular, enabling the covering to be fastened to the support body in a simple manner and allowing the covering to be changed quickly, the cavity is under negative pressure and the force fit between the support body and the covering occurs by negative pressure, wherein at least one seal is provided between the cavity and the other partner (covering of the support body).

Description

Device on a spinning preparation machine, z. As carding, carding, cleaner, comber o. The like., In which at least one carding element of a garnished roller is arranged opposite

The invention relates to a device on a spinning preparation machine, z. As carding, carding, cleaning, comber o. The like., In which at least one carding element of a garnished roller is arranged at a distance opposite and extends over the entire width of the roller having an elongate support body comprising a foot part and a back part, wherein on the foot part of the supporting body a clothing is fixed by frictional connection and in which at least one cavity for mediation of the frictional connection is present.

In a known device (DE 10 201 1 108 616 A) Kardierelemente be pressed during operation by spring force to a carrier and to change the pressing force is canceled by at least one acting at several points separate element. The pressing force is transmitted through sliding blocks or a groove rail in the Nutführungsprofil the Kardierelementes. Here, a sawtooth or carding pins are mounted in a holding element which is pulled by a sliding block or a piece of rail in the direction of the carrier. The traction is through

CONFIRMATION COPY generates a spring and applied by means of a screw and nuts on the sliding block. The screw passes through a cavity in the carrier. The known device is structurally complex. In particular, it disturbs that the clothing is held indirectly via additional holding elements and a sliding block. A further disadvantage is that for changing the carding further separate components or tools are required, which also delay a quick change.

The invention is therefore an object of the invention to provide a device of the type described above, which avoids the disadvantages mentioned, which in particular is structurally simple, in particular allows the attachment of the set on the support body in a simple manner and allows a quick change of the set. The solution of this object is achieved by the characterizing features of claim 1.

Due to the fact that the frictional connection between the support body and the clothing is effected by negative pressure, the clothing is held directly and directly by the negative pressure. Due to the negative pressure and the seal a direct connection between the support body and the clothing is realized in a simple way. In particular, the seal allows a connection with high precision. Another advantage is that a change of the set is made possible by eliminating the negative pressure in a particularly simple and fast way. Preferably, a valve is connected to the hollow body, which allows a compensation of the pressure difference between the vacuum in the cavity and the atmospheric pressure (air inlet), so that the connection between the support body and the clothing without additional effort and in a quick manner is solvable.

The claims 2 to 51 have advantageous developments of the invention to the content. The invention will be explained in more detail with reference to exemplary embodiments illustrated in the drawings.

It shows:

1 is a schematic side view of a card with the device according to the invention,

Fig. 2 flat bars of the revolving lid and

Section of a sliding guide, a setting sheet (flexible bend) with a side plate and the drum and the carding gap between the sets of flat bars and the drum set,

3a is a side view in section through a part of a flat bar with clothing strip (wire hook set) in the assembled position,

3b, the flat rod according to FIG. 3a, but with separately detached clothing strip,

4a, 4b is an embodiment substantially corresponding to FIG. 3 with sealing end plates and valve to the vacuum chamber,

Fig. 4c is a plan view of a rubber-elastic

Sealing element with a plurality of passage openings, 5a, 5b show an embodiment similar to FIG. 3 with longitudinal hollow chambers,

Fig. 5c is a plan view of a rubber-elastic

Covering element with a plurality of elongated openings (pockets),

6 shows an embodiment in which the sealing element is attached to the clothing strip,

Fig. 7 shows an embodiment in which the vacuum chamber is arranged in the clothing strip and

Fig. 8 shows an embodiment in which the seal is made only on the suction force of the negative pressure.

Fig. 1 shows a card, z. B. Trützschler carding machine TC, with feed roller 1, 4a, dining table 2, lickers 3a, 3b, 3c, drum 4, pickup 5, skimmer 6, squeezing rollers 7, 8, Vliesleitelement 9, trimming funnel 10, take-off rollers 1 1, 12, moving lid 13 with lid deflection rollers 13a, 13b and flat bars 14, jug 15 and can stock 16. The directions of rotation of the rollers are shown with curved arrows. M denotes the center point (axis) of the drum 4. 4a indicates the clothing and 4b indicates the direction of rotation of the drum 4. B is the direction of rotation of the traveling lid 13 in the carding position and C is the return transport direction of the flat bars 14, with 30 ', 30 "being functional elements and 13a and 13b being lid deflecting rollers The arrow A indicates the working direction.

2, on each side of the card a Einstellbogen 17 (flexible bend) is present, which is integrally integrated in the associated side plate 19. The Einstellbogen 17 has a convex outer surface 17a and a bottom 17b. Above the Einstellbogens 17 is a sliding guide 20, z. B. of lubricious plastic, present, having a convex outer surface 20 a and a concave inner surface 20 b. The concave inner surface 20b rests on the convex outer surface 17a and is able to slide thereon in the direction of the arrows D, E. Each flat bar 14 consists of a back portion 14a and a lid foot 14b. Each flat bar 14 has at its two ends in each case a lid head, each comprising two steel pins 14i, 14 ₂ . The parts of the steel pins 14-i, 14 ₂ projecting beyond the end faces of the cover foot 14b slide on the convex outer surface 20a of the sliding guide 20 in the direction of the arrow B. On the lower surface 14g (see FIG. 3b) of the cover foot 14b is a clothing strip 24 attached with a set 18. With 21 of the tip circle of the flat fittings 18 is designated. The drum 4 has at its periphery a drum set 4a, z. B. sawtooth, on. The tooth height of the saw teeth is z. B. h = 2 mm. At 22, the tip circle of the drum set 4a is designated. The distance (carding gap) between the tip circle 21 and the tip circle 22 is denoted by a and is z. The distance between the outer convex surface 20a and the tip circle 22 is denoted by b, and the distance between the outer convex surface 20a and the tip circle 21 is indicated by c The radius of the outer convex surface 20a is r ₃ and the radius of the tip circle 22 is denoted by n The radii and r ₃ intersect at the center M of the drum 4. The side plate is denoted by 19. The flat bars 14 are extruded hollow profiles, for example of aluminum, with an internal cavity 14c.

According to Fig. 3a, 3b, the cavity 14c of the flat rod is divided into an upper and a lower part, which are closed by a partition wall 26 against each other airtight. The lower part forms a vacuum chamber 27 (vacuum chamber), which is connected to a (not shown) vacuum device. To the vacuum chamber 27, a plurality of through channels 28a to 28n is connected, which penetrate the cover foot 14b. The output of the channels 28a to 28n is at the Entrance of through openings 29 a to 29 n connected, which penetrate a thin sealing strip 30. The sealing strip 30 is attached to the foot surface 14g with an adhesive layer 31.

The flat clothing 24 (clothing strip) consists of clothing tips 18 (wire hooks) and a support member 25 (carrier layer) made of a textile material. The wire hooks 18 are approximately U-shaped and pierced in the supporting element 25 is secured. The deflection regions of the wire hooks 18 project beyond the surface 25 '. The ends of the wire hooks 18, the clothing tips, are free. The wire hooks 18 are made of steel wire.

Two webs 14d, 14e are attached to the cover foot 14b laterally in the longitudinal direction, so that a recess 14f is present in the area of the foot surface. As a result, the clothing strip 24 is held, protected and embedded. In the recess 14 f is as a sealing member of the thin rubber strip 30, z. B. about 1 mm thick, arranged, which is attached to the adhesive layer 31 on the foot surface 14g. In the lower recess 14 f, the support member 25 is arranged with the flat cover 24. The flat clothing 24 is fastened or held with its region facing away from the free clothing tips 18 (teeth) on the foot surface 14 g of the support body 14.

In the embodiment illustrated in FIGS. 3a and 3b, the flat clothing 18 consists of wire hooks in a carrier element 25. The design additionally has a compensation layer 32, with which higher lid precision and an enlarged attachment surface are made possible. The compensation layer 32 is expediently an adhesive layer on which a sheet 33 (sole) o. The like., For. As a steel sheet is attached, which is in contact with the rubber element 30.

3a shows the flat rod 14 and the clothing strip 24 in the assembled state, wherein the flat clothing 24 is held so firmly by the negative pressure from the vacuum chamber 27 via the steel sheet 33, that during operation by the card on the flat clothing 24 forces acting on the clothing strip 24 on the rubber element 30 and the cover foot 14b hold. According to Fig. 3b, the clothing strip 24, z. B. wear, damage o. The like. The clothing hook 18 including the sole 33, separated from the rubber member 30 and the cover foot 14 b and has been removed from the recess 14 f. The separation from the rubber element 30 and the cover foot 14b can be carried out in a simple manner by aeration of the vacuum chamber 27 (connection with the atmosphere), with which the holding suction force is overcome. The separation can also be done manually while the card is running during operation on the return transport of the flat bars 14 (see arrow C in FIG. The flat bars 14 are detachable from the drive toothed belt (not shown).

According to the embodiment according to FIGS. 4 a to 4 c, a rubber coating in a thickness of approximately 0.5 to 1 mm is first applied to the contact surface (bottom surface 14 g) of the flat bar profile 14. This coating 30 serves as a seal and on the other hand to improve the flatness of the carrier profile. Subsequently, through holes 28a to 28n with a diameter of 1 to 7 mm are introduced into the contact surface in an offset over the entire surface. At the same time through holes 29a to 29n are also introduced into the coating 30 (see Fig. 4c), wherein the through holes 28a to 28n are aligned with the through holes 29a to 29n respectively. In this way, continuous channels are created; z. For example, a channel consists of the through-hole 28a and the through-hole 29a. The end faces of the rod 14 are hermetically sealed with plates 34a, 34b (only plate 34a shown on a front side). It may also be sufficient that only the end faces in the region of the lower vacuum chamber 27 with plates 34a, 34b are hermetically sealed. In the face plate 34a, a valve 35 is provided for connection to a vacuum pump (not shown). The clothing strip 24 with back plate 33 is placed on the contact surface 14 g of the carrier profile (flat bar 14). The back plate 33 is previously wetted with a fluid to ensure the tightness. Via the valve 35 in the end plate 34a, the clothing strip 24 is sucked into the cavity 27 of the flat bar 14 by means of a vacuum pump. The valve 35 is closed after vacuum generation to prevent air ingress. In the end plates (not shown) indicator element is used, which brings the pressure change in the vacuum chamber 27 for display. In this way, the clothing strip 24 is releasably secured to the flat bar 14.

According to the embodiment according to FIGS. 5a to 5c, a rubber insert 30 with openings 36a to 36n (pockets) is glued to the carrier element 14. The carrier profile 14 is formed such that it has hollow chambers 37a to 37n over the longitudinal axis. At the end of the hollow chambers head pieces are attached with valves. After inserting the clothing strip, a negative pressure is generated by the valves on the hollow chambers and the Gamiturstreifen sucked to the carrier profile. According to Fig. 5, the head piece 37a (plate) mounted in the direction of the end face of the carrier profile, one-sided open recess 37 '. The recess 37 'extends from the vacuum chamber 27 to the longitudinal hollow chambers 37a to 37c. The hollow chambers 37a to 37c are mounted as unilaterally open channels in the foot of the carrier profile 14, wherein the open side in each case points in the direction of the rubber-elastic sealing element 30. A longitudinally shaped opening 36a to 36n bridges in each case a plurality of hollow chambers 37a to 37n. In this way, the clothing strip 14 is sucked to the support body 14 and releasably secured thereto.

According to another, not shown embodiment, the rubber insert 30 is designed as a tube which is adhered to the support section 14. This tube has one-sided openings, which can apply the negative pressure on the back plate 33. The hose has an end like a bicycle hose a valve through which the vacuum can be generated by means of a vacuum pump.

Other designs may include milled pockets and O-ring inserts.

According to FIG. 6, the support element 25 of the clothing strip 24 is assigned a rubber-elastic sealing element 40. The sealing member may be on the support member 25 or on a sole 33, z. B. sheet metal (see Fig. 30), be attached. Due to the negative pressure in the lower chamber 27 of the clothing strip 24 is sucked to the support body 14 and releasably secured thereto.

According to FIG. 7, a vacuum chamber 41 is arranged in the carrying element 25 of the clothing strip 24. Between the support member 25 and the bottom surface of the support body 14, a rubber-elastic sealing element 42 is present. Due to the negative pressure in the vacuum chamber 41 of the clothing strip 24 is sucked to the support body 14 and releasably secured thereto. According to Fig. 8 is on the support member a sole 33, z. B. attached a flat sheet. The sheet 33 is smooth, z. B. polished. The foot surface 14 g of the support body 14 is also smooth, z. B. polished. It is important that between sheet 33 and support 14 no air from the atmosphere penetrates. The seal is made without a separate sealing element only by the suction force of the negative pressure. It may be appropriate that between the sheet and support body, a very thin adhesive film o. The like., Z. As spray, is present.

Claims

claims

Device on a spinning preparation machine, z. As carding, carding, cleaning, comber o. The like., In which at least one carding element of a garnished roller is arranged at a distance opposite and extends over the entire width of the roller having an elongate support body comprising a foot part and a back part, wherein on the foot part of the supporting body a clothing is fixed by frictional connection and in which at least one cavity for mediation of adhesion is present, characterized in that the cavity (14c; 27; 41) is under negative pressure and the frictional connection between the support body (14; 14b) and the clothing (24, 25) is carried out by negative pressure, wherein between the cavity (14c; 27; 41) and the other partner (set 24, 25 or supporting body 14; 14b) at least one seal is present.

Device according to claim 1, characterized in that the seal is a sealing element (30; 40; 42). 3) Device according to claim 1 or 2, characterized in that a pressure difference between the negative pressure in the cavity and the atmospheric pressure is present.

4) Device according to claim 1 to 3, characterized in that the negative pressure exerts a tensile force on the clothing.

5) Device according to one of claims 1 to 4, characterized in that the negative pressure exerts a tensile force on the support body.

6) Device according to one of claims 1 to 5, characterized in that the cavity is associated with the support body.

7) Device according to one of claims 1 to 6, characterized in that the cavity is present or integrated in the support body.

8) Device according to one of claims 1 to 7, characterized in that the cavity of the holding element for the clothing, z. B. clothing strip, cassette assigned.

9) _. Device according to one of claims 1 to 8, characterized in that the cavity is present or integrated in the holding element for the clothing.

10) Device according to one of claims 1 to 9, characterized in that the seal is a sealing element.

11) Device according to one of claims 1 to 10, characterized in that the seal is formed rubber-elastic. 12) Device according to one of claims 1 to 11, characterized in that the sealing element, for. B. rubber coating, rubber pad, rubber pad o. The like., About 0.5 to 1 mm thick.

13) Device according to one of claims 1 to 12, characterized in that the cavity is sealed airtight by the seal.

14) Device according to one of claims 1 to 13, characterized in that the cavity has at least one opening which is closable by the seal.

15) Device according to one of claims 1 to 14, characterized in that on the foot part of the support body, a rubber-elastic seal, for. B. rubber coating, is attached.

16) Device according to one of claims 1 to 15, characterized in that on the profile of the support body, a rubber insert with openings (pockets) is glued, wherein the carrier profile is formed such that it has hollow chamber over the longitudinal axis.

17) Device according to one of claims 1 to 16, characterized in that the openings (pockets) can be generated by milling.

18) Device according to one of claims 1 to 17, characterized in that O-ring inserts are used.

19) Device according to one of claims 1 to 18, characterized in that the rubber insert is a hose o. The like., Which is glued to the profile of the support body. 20) Device according to one of claims 1 to 19, characterized in that the hose has openings which apply the negative pressure to a backing plate on the clothing carrier.

21) Device according to one of claims 1 to 20, characterized in that the clothing strip has a flat back plate.

22) Device according to one of claims 1 to 21, characterized in that the back plate is wetted with a sealing fluid.

23) Device according to one of claims 1 to 22, characterized in that the first cavity forms a vacuum chamber and the second cavity through a plurality of through openings, for. B. drilling, cutouts o. The like., Is formed, which allow a negative pressure effect.

24) Device according to one of claims 1 to 23, characterized in that at least two cavities are present, which are connected by a channel o. The like. At the front side of the support body to each other via negative pressure.

25) Device according to one of claims 1 to 24, characterized in that the first cavity forms a vacuum chamber and the second cavity is formed by a channel o. The like. With through openings, which allow a negative pressure effect.

26) Device according to one of claims 1 to 25, characterized in that the cavity has a slot-shaped opening over the length of the tag body. 27) Device according to one of claims 1 to 26, characterized in that the cavity has a slot-shaped opening over the length of the holding element for the clothing.

28) Device according to one of claims 1 to 27, characterized in that the vacuum chambers are punched out in the rubber pad.

29) Device according to one of claims 1 to 28, characterized in that the supporting body as a hollow body, for. B. extruded aluminum, is formed, whose end faces are hermetically sealed.

30) Device according to one of claims 1 to 29, characterized in that the end faces are closed by plates, sheets o. The like.

31) Device according to one of claims 1 to 30, characterized in that between the end faces and the plates, sheets o. The like. A seal is present.

32) Device according to one of claims 1 to 31, characterized in that at least one cavity, a valve, for. B. air valve is connected.

33) Device according to one of claims 1 to 32, characterized in that the valve to a suction source, for. B. vacuum pump, can be connected.

34) Device according to one of claims 1 to 33, characterized in that the valve on the plate, the sheet o. The like. Is arranged.

35) Device according to one of claims 1 to 34, characterized in that for changing the set the negative pressure in the cavity is eliminated. 36) Device according to one of claims 1 to 35, characterized in that the negative pressure is eliminated by opening the valve.

37) Device according to one of claims 1 to 36, characterized in that the valve allows a compensation of the pressure difference between the negative pressure in the hollow body and the atmospheric pressure (air inlet).

38) Device according to one of claims 1 to 37, characterized in that the vacuum is able to hold the clothing in operation against carding forces acting on the clothing.

39) Device according to one of claims 1 to 38, characterized in that the holding element for the clothing is arranged in a form-fitting manner in a recess in the foot part of the support body.

40) Device according to one of claims 1 to 39, characterized in that the carding element is a revolving lid bar of a card.

41) Device according to one of claims 1 to 40, characterized in that the carding a Festkardiersegment, z. B. on a card, a cleaner o. The like., Is.

42) Device according to one of claims 1 to 41, characterized in that the carding a circular comb segment, for. B. on a comber.

43) Device according to one of claims 1 to 42, characterized in that the sealing element is arranged at the foot of the flat bar.

44) Device according to one of claims 1 to 43, characterized in that the sealing element is fixed to the foot of the flat bar. 45) Device according to one of claims 1 to 44, characterized in that the sealing element has a plurality of through openings.

46) Device according to one of claims 1 to 45, characterized in that the sealing element is arranged on the clothing strip.

47) Device according to one of claims 1 to 46, characterized in that the sealing element is mounted on the clothing strip.

48) Device according to one of claims 1 to 47, characterized in that the sealing element is a rubber coating.

49) Device according to one of claims 1 to 48, characterized in that the rubber coating has a thickness of about 0.5 to 1 mm.

50) Device according to one of claims 1 to 49, characterized in that the vacuum chamber (vacuum chamber) is associated with an indicator element which brings the pressure change in the vacuum chamber for display.

51) Device according to one of claims 1 to 50, characterized in that the sealing takes place without a separate sealing element.