EP0684336A2 - Dispositif pour aligner des bandes - Google Patents

Dispositif pour aligner des bandes Download PDF

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Publication number
EP0684336A2
EP0684336A2 EP19950103959 EP95103959A EP0684336A2 EP 0684336 A2 EP0684336 A2 EP 0684336A2 EP 19950103959 EP19950103959 EP 19950103959 EP 95103959 A EP95103959 A EP 95103959A EP 0684336 A2 EP0684336 A2 EP 0684336A2
Authority
EP
European Patent Office
Prior art keywords
straightening
bar
fabric
elements
web
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.)
Granted
Application number
EP19950103959
Other languages
German (de)
English (en)
Other versions
EP0684336B1 (fr
EP0684336A3 (fr
Inventor
Karl Müssig
Martin Schnaus
Roland Behr
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.)
Texpa Maschinenbau GmbH and Co KG
Original Assignee
Texpa Arbter Maschinenbau 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 Texpa Arbter Maschinenbau GmbH filed Critical Texpa Arbter Maschinenbau GmbH
Publication of EP0684336A2 publication Critical patent/EP0684336A2/fr
Publication of EP0684336A3 publication Critical patent/EP0684336A3/xx
Application granted granted Critical
Publication of EP0684336B1 publication Critical patent/EP0684336B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/02—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials transversely
    • D06H7/025—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials transversely in line with an embossed or a raised pattern on the fabric; Cutting pile fabric along a loopless or napless zone, e.g. the plain woven portion of towel cloth
    • 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
    • Y10T83/00—Cutting
    • Y10T83/323—With means to stretch work temporarily
    • 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
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/461—With abutment to position work being fed with respect to cutter

Definitions

  • the invention relates to a device for aligning panels of fabric according to the preamble of patent claim 1.
  • Devices of this type are used wherever it is necessary to precisely position and align fabric webs for a subsequent processing step, usually a separation into individual fabric parts.
  • Fabric webs of the type in question here have areas of different thickness alternating in the longitudinal direction.
  • floreless lanes are usually provided at regular intervals across the longitudinal direction of the web, the distance between these floreless lanes essentially corresponding to the length of the finished product to be produced, for example a towel.
  • a disadvantage of this known device is above all that due to the elastic spring-loaded mounting of the straightening elements, lifting of the straightening elements, caused by infiltration of the shoes of the straightening elements by the increased pile area, cannot be reliably avoided even with relatively low tensile forces on the fabric. This then leads to the pile area slipping through the straightening device; safe positioning is no longer possible.
  • Another disadvantage of this known device is that, especially if the fabric also has areas of different thickness in the transverse direction, for example edge areas without pile, hem areas, etc., the contact forces of the individual straightening elements are unevenly large over the entire width of the fabric. Due to the uneven holding forces caused thereby, undesired slipping of the fabric under the straightening device in certain areas cannot be reliably ruled out.
  • the device for aligning fabric webs has an upper and a lower alignment bar, these two alignment bars being arranged essentially transversely to the fabric web and lying opposite one another at a short distance.
  • the two straightening strips form a gap through which the fabric web passes.
  • the upper straightening bar has, in a manner known per se, a number of straightening elements arranged in the longitudinal direction of the straightening bar. These straightening elements are movable in the upper straightening bar essentially perpendicular to the plane of the fabric web, ie they are displaceable, supported and can be brought into abutment on the bottom straightening bar with the interposition of the web of material to be aligned. In contrast to the straightening elements known from DE 25 44 410 C3, however, the straightening elements according to the invention are essentially freely movable so that they can be brought into contact with the material web under gravity.
  • the straightening elements there is no active pressing of the straightening elements via springs, compressive forces or the like; the straightening elements only appear on the basis of their own weight or mass the lower directional strip of fabric at rest. Since the masses of all the essentially identical straightening elements are identical, there is a completely uniform contact force of the straightening elements on the web over the entire width of the fabric.
  • the straightening elements are adapted in the simplest manner to the transverse profile of the fabric web to be aligned, if this has, for example, alternating regions in the transverse direction of different thicknesses, seams or the like.
  • the straightening elements After the straightening elements have been brought into contact with the fabric in a region of small thickness in the manner described above, for example in the case of terry goods in a floreless alley, the straightening elements are detachably fixed in the upper straightening strip according to the invention.
  • This fixation provides a simple and reliable securing of the straightening elements against lifting off the web, while maintaining the pressing force caused by the mass of the straightening elements only, when an area of greater thickness, for example a pile area, comes into contact with the straightening elements. An undesirable slipping of the fabric under the straightening elements is thus reliably avoided.
  • the straightening elements each have a shaft which is guided in a complementary recess in the upper straightening bar with at least slight, in particular radial, play. At its lower end, the straightening elements have a straightening foot that can be brought into contact with the fabric.
  • the shaft of the straightening elements is essentially circular-cylindrical and has an at least slightly smaller diameter than the likewise cylindrical recess of the upper straightening bar.
  • the length of the shaft of the straightening elements is greater than the height of the upper straightening bar.
  • the recess for receiving the straightening elements extends completely through the upper straightening bar, i.e. it is open up and down.
  • the shaft of the straightening elements protrudes through the upper recess of the upper straightening bar and is secured against falling out by a securing element arranged at the upper end of the shaft, for example a circlip.
  • the leveling foot of the leveling element has a support surface for contacting the fabric and a leveling edge and / or leveling area for contacting an area of greater thickness of the fabric, in particular the beginning of the pile area with terry material.
  • the straightening elements can be fixed in the upper straightening bar after contacting the fabric web in any way. This can take place in particular in a form-fitting manner, for example in the manner of a mechanical rear grip, or in a force-fitting manner in the manner of a clamp. Clamping can be carried out in the simplest manner, for example, in that each straightening element is fixed by a clamping screw. Mechanical clamping by means of eccentric elements or the like is also possible without leaving the bottom of the present invention. Likewise, in principle any straightening element can be fixed individually or all straightening elements can be fixed via a common clamping device.
  • the straightening elements are clamped pneumatically or hydraulically.
  • the device according to the invention preferably has a channel which extends essentially over the entire length of the upper straightening bar, which can be pressurized pneumatically, has openings to the guide recesses of the straightening elements and is provided with at least one pneumatically operable clamping element which is connected via the openings the guide shafts of the straightening elements can be brought into contact with the system.
  • a rubber-elastic membrane can be used as the clamping element, for example, which seals the channel to the guide recesses for the straightening elements and is pressed force-fit or frictionally against the shafts of the straightening elements when pressure is applied.
  • an essentially airtight hose is used as the clamping element in a simple manner, which is arranged in the channel over its entire length, inserted in the simplest case, and can be reversibly pressurized via a valve.
  • the hose wall is pressed as described above for the membrane, pressed against the guide shafts of the straightening elements and secures them; this fixation is released when the pressure is released.
  • the upper straightening bar is provided with means for guiding and positioning relative to the fabric.
  • These means preferably consist of hydraulic or pneumatic linear guides, ie in the simplest way of pneumatic cylinders.
  • These two pneumatic cylinders are each attached to both axial ends of the upper straightening bar arranges.
  • a corresponding device for guiding and positioning can also be provided for the lower straightening bar.
  • An advantage of the device according to the invention with means for guiding and positioning at least the upper straightening bar is that if, for example, the floreless alley is stepped in the longitudinal direction by borders or the like, first of all the straightening elements are brought into contact in the deepest area of the alley can be, at the same time the profile of the fabric is reproduced in the transverse direction, whereupon, when the fabric is transported in the longitudinal direction, the upper straightening bar with the fixed straightening elements can be raised above the raised border area without changing the predetermined position of the straightening elements . When the border area is drawn under the straightening elements, the upper straightening bar with the positioned straightening elements is placed on the floreless lane, whereupon the device for the final positioning of the fabric is ready.
  • these devices for guiding and positioning can be used to easily adapt the device to tissues of different thicknesses.
  • the device according to the invention shown in FIG. 1 has a lower alignment bar 1 and an upper alignment bar 2.
  • the two straightening strips 1, 2 are arranged opposite one another, leaving a gap 3.
  • the upper straightening bar 2 has a number of straightening elements 4 arranged next to one another in the longitudinal direction of the straightening bar 2, which are only indicated schematically in the illustration according to FIG. 1.
  • These straightening elements 4 extend along the straightening bar 2 essentially over a length which corresponds to the width of a fabric web 5 which is carried out between the straightening elements 4 and the lower straightening bar 1.
  • the fabric web 5 lies on the lower straightening bar 1 with its lower surface.
  • the straightening elements 4 come to rest with their contact surface 6 on the surface of the fabric web 5.
  • the straightening elements 4 each have a shaft 7 and a straightening head 8 at the end of the shaft 7 facing the lower straightening strip 1.
  • Each shaft 7 of each element 4 is arranged in a recess 9 arranged in the upper alignment bar 2, this recess being downward, i.e. to the lower straightening bar 1, and is open at the top.
  • the shaft 7 of the straightening elements 4 is cylindrical, as is the recess 9.
  • the diameter of the recess 9 is slightly larger than the diameter of the cylindrical shaft 7, so that the shaft 7 in the respectively assigned recess 9 of the upper straightening bar 2 is slightly radial Play in the axial direction, based on the shaft 7, is freely movable.
  • the length L of the shaft 7 of the straightening elements 4 is greater than the height h of the upper straightening bar 2 in the exemplary embodiment shown in the figures.
  • the shaft 7 of each straightening element 4 has a securing element at its upper end protruding from the recess 9 of the upper straightening bar 2 10 in the form of a circlip which, on the one hand, causes the respective straightening elements to be carried along when the upper straightening bar 2 is lifted in the direction of the arrow F and, on the other hand, prevents the straightening elements 4 from falling out of the upper straightening bar 2.
  • the leveling foot 8 of the leveling element 4 is cuboid in shape and has a lower contact surface 6 for flat contact with the fabric web 5 and (see illustration according to FIG. 4) a leveling surface 12 for contacting the raised surface Pile area 13 of fabric 5 when aligning.
  • the leveling surface 12 is directed downwards by a leveling edge 11 limited.
  • the straightening surface 12 in this exemplary embodiment of the present invention is not wedge-shaped, which reduces the risk of undesired hooking into the pile of a terry cloth.
  • FIG. 3 the device according to Figures 1 and 2 is shown in a side view.
  • the fabric web 5 is transported on a table 15 in the direction of the arrow P.
  • the fabric web 5 consists of alternating areas of different thickness, namely areas with a relatively thick pile 13 and floreless alleys 14.
  • the fabric web 5 is positioned and Alignment cut by the device according to the invention in each case in the area of a floreless alley 14 using a cutting or separating device 17.
  • This cutting device 17 essentially consists of a fixed lower knife 18 and a complementary movable upper knife 19.
  • Both the cutting and separating device 17 and the device according to the invention are arranged in the region of a recess 16 of the table 15, so that in this region both the upper and lower straightening strips 1, 2 and the upper and lower knives 18, 19 can freely reach the fabric web 5.
  • the width of the recess 16 essentially corresponds to the width of the fabric web 5.
  • both the lower alignment bar 1 and the upper alignment bar 2 are each provided with a device for guiding and positioning the respective alignment bar 1, 2.
  • this device consists of a pneumatic cylinder 20 at each axial end of the straightening strips 1, 2, as a result of which both the lower straightening strip 1 and the upper straightening strip 2 can be set against or lifted off from one another.
  • the straightening elements 4 are also lifted over the securing elements 10, so that there is a wide open gap for carrying out the fabric web 5 or for maintenance work on the device.
  • FIGS. 4 to 7 each show a detail of a section of the device according to the invention in the region of the recess 16 of the table 15 in an enlarged view.
  • 4 shows a so-called open position, in which the lower straightening bar 1 is in its lowest position and the upper straightening bar 2 in its uppermost position. In this open position, the fabric 5 can be transported from one floreless alley 14 to the next. In this position, the exemplifying straightening element 4 is secured against falling out of the upper straightening bar 2 by the locking ring 10.
  • the shaft 7 of the straightening element 4 is clamped via a clamping device 21, which will be described in more detail below, so that the straightening element 4 is fixed in the axial direction, but without any forces of any kind being caused by the clamping 21 be applied to the fabric web 5.
  • the raised pile area 13 of the fabric web 5 abuts the alignment surface 12 of the alignment elements 4.
  • the system is carried out simultaneously over the entire width of the fabric web on all straightening surfaces 12 of all straightening elements 4, which results in a safe and reliable alignment and positioning of the fabric web 5 or the floreless region 14 of the web 5.
  • the fabric web 5 is then cut off by the schematically illustrated cutting and separating device 17.
  • the lower straightening bar 1 and the upper straightening bar 2 are then moved apart again, as shown in FIG. 4, whereupon the fabric web 5 can be transported on to the next floreless area 14.
  • the clamping device 21 has a channel 22 which extends essentially over the entire length of the straightening strip 2, this channel being essentially airtight and can be pressurized with compressed air via a valve 23 (cf. FIG. 1).
  • a strip-shaped clamping element 24 is provided over the entire axial length of the straightening strip 2 in the channel 22 arranges, which consists for example of a rubber-elastic material.
  • the depth d of the channel 22 is chosen so that the shafts 7 of the straightening elements 4 protrude at least slightly into this channel.
  • the clamping element 24 is pressed against the shafts 7 of the straightening elements 4 and fixes them in the axial direction.
  • the channel 22 is vented, for example also via the valve device 23.
  • FIG. 7 shows the use of the device according to the invention in a fabric web 5 in which the floreless fabric in the alley area 14 is graduated.
  • the device according to the invention can be brought into position as shown in FIG. Then, i.e. during further transport of the fabric web 5 in the direction of arrow P, the clamped upper alignment bar is only raised by the amount of the step height x, the cross-sectional profile of the fabric web 5 shown by the alignment elements 4 remaining unchanged and the upper alignment bar 2 after reaching a position that is short is in front of the final alignment position, is only removed without having to readjust to the web profile.
  • an undesired positioning of the fabric on the step edge in the florid alley 14 is avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP19950103959 1994-05-25 1995-03-17 Dispositif pour aligner des bandes Expired - Lifetime EP0684336B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4418241 1994-05-25
DE19944418241 DE4418241A1 (de) 1994-05-25 1994-05-25 Vorrichtung zum Ausrichten von Stoffbahnen

Publications (3)

Publication Number Publication Date
EP0684336A2 true EP0684336A2 (fr) 1995-11-29
EP0684336A3 EP0684336A3 (fr) 1995-12-27
EP0684336B1 EP0684336B1 (fr) 2000-06-28

Family

ID=6518932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950103959 Expired - Lifetime EP0684336B1 (fr) 1994-05-25 1995-03-17 Dispositif pour aligner des bandes

Country Status (3)

Country Link
US (1) US5605266A (fr)
EP (1) EP0684336B1 (fr)
DE (2) DE4418241A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998027260A1 (fr) * 1996-12-14 1998-06-25 Carl Schmale Gmbh & Co. Barre de tension
CN110451315A (zh) * 2019-02-14 2019-11-15 泰兴市双羊机械工程有限公司 一种胎面胶分切机衡张力稳压保距控制系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544410A1 (de) * 1975-10-03 1977-04-07 Arbter C Einrichtung zum ausrichten und fadengeraden trennen von stoffbahnen
GB2147237A (en) * 1983-09-24 1985-05-09 Schmale Carl Gmbh & Co Kg Clamp bar
WO1986000349A1 (fr) * 1984-06-18 1986-01-16 Opelika Manufacturing Corporation Systeme d'alignement, de coupe et de bordage de serviette
US4771928A (en) * 1986-05-09 1988-09-20 Takanori Okada Towel fabric processing device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE467259B (sv) * 1987-10-09 1992-06-22 Akab Of Sweden Ab Anordning foer riktning av avskaerning av en tygbana
JPH0226984A (ja) * 1988-07-11 1990-01-29 Singer Nikko Kk タオル生地の裁断装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544410A1 (de) * 1975-10-03 1977-04-07 Arbter C Einrichtung zum ausrichten und fadengeraden trennen von stoffbahnen
GB2147237A (en) * 1983-09-24 1985-05-09 Schmale Carl Gmbh & Co Kg Clamp bar
WO1986000349A1 (fr) * 1984-06-18 1986-01-16 Opelika Manufacturing Corporation Systeme d'alignement, de coupe et de bordage de serviette
US4771928A (en) * 1986-05-09 1988-09-20 Takanori Okada Towel fabric processing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998027260A1 (fr) * 1996-12-14 1998-06-25 Carl Schmale Gmbh & Co. Barre de tension
CN110451315A (zh) * 2019-02-14 2019-11-15 泰兴市双羊机械工程有限公司 一种胎面胶分切机衡张力稳压保距控制系统

Also Published As

Publication number Publication date
US5605266A (en) 1997-02-25
EP0684336B1 (fr) 2000-06-28
DE59508505D1 (de) 2000-08-03
EP0684336A3 (fr) 1995-12-27
DE4418241A1 (de) 1995-11-30

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