EP0994211A1 - Cylindre tondeur - Google Patents

Cylindre tondeur Download PDF

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Publication number
EP0994211A1
EP0994211A1 EP99120126A EP99120126A EP0994211A1 EP 0994211 A1 EP0994211 A1 EP 0994211A1 EP 99120126 A EP99120126 A EP 99120126A EP 99120126 A EP99120126 A EP 99120126A EP 0994211 A1 EP0994211 A1 EP 0994211A1
Authority
EP
European Patent Office
Prior art keywords
shear
cylinder
distances
blades
individual
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
EP99120126A
Other languages
German (de)
English (en)
Other versions
EP0994211B1 (fr
Inventor
Robert Dr. Ing. Knein-Linz
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.)
Sucker Mueller Hacoba GmbH and Co
Original Assignee
Sucker Mueller Hacoba GmbH and Co
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 Sucker Mueller Hacoba GmbH and Co filed Critical Sucker Mueller Hacoba GmbH and Co
Publication of EP0994211A1 publication Critical patent/EP0994211A1/fr
Application granted granted Critical
Publication of EP0994211B1 publication Critical patent/EP0994211B1/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
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C13/00—Shearing, clipping or cropping surfaces of textile fabrics; Pile cutting; Trimming seamed edges

Definitions

  • the invention relates to a shear cylinder of a shearing machine with on the outer surface multi-helical shear blades arranged at least a counter knife for shearing is assigned to a moving fabric web.
  • the known shear cylinder works with a counter knife arranged parallel to the shear cylinder axis. This defines a spatially fixed cutting line. The pile of the moving fabric web runs into this cutting line while the shear cylinder rotates .
  • the shear knife When cutting, the shear knife can grasp and separate fibers that - seen in the direction of transport of the fabric - anchored one behind the other in the base fabric are. According to the rules of geometry, this can lead to two cut off Fibers have different lengths, even though they were cut at the same time. Such different cutting lengths become grave with knobbed goods, in other words, for a product whose pile is not made from individual standing fibers, but from fibers formed in tufts or rows.
  • the resulting one Cutting length or cutting height this is the one that remains after shearing Pile height depends on the position (during cutting) of the individual Tufts in relation to the lower knife.
  • the so-called moirée effect Effect can occur regardless of transport speed and cutting frequency, if the cutting frequency (product of cylinder speed and number of Cutting knife) in a ratio typical of the respective pile density to (through the transport speed) impact frequency of the pile fibers or Knobs (on the counter knife) stands.
  • the unfavorable frequency relationships can only be seen from the shear result, i.e. only determined by larger shear samples. If the moirée effect is to be excluded, the individual fabric panel sheared twice or more.
  • the invention has for its object the moiré effect for practically everyone Relationship between cutting frequency and impact frequency of the pile from the outset to exclude.
  • the solution according to the invention is for the shear cylinder described above indicated in the characterizing part of claim 1.
  • a random distribution of the shear knife distances is preferred. Sufficient However, if the distances alternate in the circumferential direction of the shear cylinder, i.e. if e.g. closer and further (mutually equal) distances alternating successive.
  • the distribution of the shear blades on the circumference of the Shear cylinders should also be selected so that the cylinder is balanced overall remains.
  • An essential feature of the invention is that there are areas on the shear cylinder in which the shear knives of adjacent pairs of shear knives do not have the same distance from shear knife to shear knife, but - within a certain range of variation - have a clearly unequal distance.
  • Significantly unequal "or clearly not equidistant "etc. means, in the context of the invention, a deviation far outside the permissible manufacturing tolerances with the conventionally desired equidistance of the shear knives.
  • the inequality of the distances measured in the cylinder circumferential direction should preferably also be irregular.
  • the should preferably in the circumferential direction varying distances can be selected with the help of a random generator.
  • the shear knife distances preferably with random distribution, only determined according to the invention on one half of the cylinder circumference and on the other Half of the cylinder circumference as well as be distributed on the first half.
  • the shear cylinder according to the invention has the same smoothness as a conventional one Shear cylinders with shear blades distributed equidistantly around the circumference of the cylinder.
  • the imbalance can also be encountered, for example, if two or more distance variations be regularly provided on the circumference.
  • shear cylinder of a shearing machine With several on the outer surface described helically arranged shear blades.
  • the shear knives on the circumference of the shear cylinder with at least partially unequal mutual Intervals distributed.
  • the distribution according to the invention achieved with unequal distances between the shear blades that the Shear knife attachments on the longitudinal ends of the shear cylinder accordingly be determined.
  • shear cylinder 1 are on the axis 1 of the overall designated 2 shear cylinder Fixed shear helix or shear knife 3. Generally serve as an attachment on the longitudinal ends of the cylinder 1 provided receiving plates 4, the locking means, e.g. Bores at the mutual distance provided according to the invention of the individual shear blades.
  • the shear cylinder 2 at Operation rotates in direction of rotation 5.
  • the cutting or cutting 6 work Shear knife 3 together with a fixed counter knife 7.
  • a fabric panel 8, the pile 9 is to be sheared, is in the transport direction 10 over a shear table 11 in the cutting area, that is, on the cutting edge 12 of the counter knife 7 brought up.
  • There the pile - as shown in Fig. 2 - by the movement in the direction of transport 10 on the one hand and by the rotation of the shear cylinder 2 in the direction of rotation 5 on the other hand with the single shear knife to the Cutting edge 12 brought up and separated.
  • FIGS. 3 and 4 Some phases in shearing are shown enlarged in FIGS. 3 and 4.
  • the knobs come only by chance individually (separately) in the shear gap 14 between cutting edge 12 and cut 6.
  • Fig. 3 Cutting phase are a knob 13a and part 15 of the following Nub 13b at the same time in the shear gap 14.
  • subsequent phase is that which has remained after cutting Part 15 'of the knob 15 longer than the sheared part 13' of the knob 13a.
  • the measure according to the invention namely the non-equidistant distribution of the mutual distances between the individual shaving knives 3, does not prevent the effect described with reference to FIGS. 3 and 4, namely a slightly unequal length of the individual adjacent knob parts.
  • the inequalities are distributed irregularly or randomly on the surface of the shorn fabric, which leads to a kind Image disorder "regarding the moirée effect, so that it disappears and the fabric looks evenly shorn.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Food-Manufacturing Devices (AREA)
EP99120126A 1998-10-12 1999-10-08 Cylindre tondeur Expired - Lifetime EP0994211B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19846727 1998-10-12
DE19846727A DE19846727C1 (de) 1998-10-12 1998-10-12 Scherzylinder

Publications (2)

Publication Number Publication Date
EP0994211A1 true EP0994211A1 (fr) 2000-04-19
EP0994211B1 EP0994211B1 (fr) 2003-03-26

Family

ID=7884039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99120126A Expired - Lifetime EP0994211B1 (fr) 1998-10-12 1999-10-08 Cylindre tondeur

Country Status (3)

Country Link
EP (1) EP0994211B1 (fr)
DE (2) DE19846727C1 (fr)
ES (1) ES2194410T3 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2404837A1 (de) * 1974-02-01 1975-08-07 Severin Fa Heusch Spiralschermesser

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2404837A1 (de) * 1974-02-01 1975-08-07 Severin Fa Heusch Spiralschermesser

Also Published As

Publication number Publication date
ES2194410T3 (es) 2003-11-16
DE59904708D1 (de) 2003-04-30
DE19846727C1 (de) 2000-05-04
EP0994211B1 (fr) 2003-03-26

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