EP0078528A2 - Dispositif pour enlever un matériau plat, mou et flexible, en particulier le cuir, de la surface de travail d'un rouleau à repasser - Google Patents

Dispositif pour enlever un matériau plat, mou et flexible, en particulier le cuir, de la surface de travail d'un rouleau à repasser Download PDF

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Publication number
EP0078528A2
EP0078528A2 EP82110041A EP82110041A EP0078528A2 EP 0078528 A2 EP0078528 A2 EP 0078528A2 EP 82110041 A EP82110041 A EP 82110041A EP 82110041 A EP82110041 A EP 82110041A EP 0078528 A2 EP0078528 A2 EP 0078528A2
Authority
EP
European Patent Office
Prior art keywords
flat material
scraper
stripping
end edge
contact surface
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
EP82110041A
Other languages
German (de)
English (en)
Other versions
EP0078528B1 (fr
EP0078528A3 (en
Inventor
Frantisek Flekac
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.)
Kela Spezialmaschinen GmbH
Original Assignee
Kela Spezialmaschinen 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 Kela Spezialmaschinen GmbH filed Critical Kela Spezialmaschinen GmbH
Publication of EP0078528A2 publication Critical patent/EP0078528A2/fr
Publication of EP0078528A3 publication Critical patent/EP0078528A3/de
Application granted granted Critical
Publication of EP0078528B1 publication Critical patent/EP0078528B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/44—Mechanical treatment of leather surfaces
    • C14B1/54—Ironing
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
    • C14B17/14—Auxiliary devices for leather-working machines, e.g. grinding devices for blading cylinders or dust-removal devices combined with the working machines

Definitions

  • the invention relates to a device for stripping soft, flexible flat material from contact surfaces, in particular leather from the working surface of an ironing roller, with stripping means engaging in the region of the contact surface on an end edge of the flat material.
  • Scraper devices of this type are known, rigid, knife-like members or suction devices being used as the scraper means.
  • An embodiment of the scraper device has been found to be particularly effective in which the scraper member has a movement path which is curved convexly or in sections towards the contact surface and the flat material end edge in the region of the flat material end edge.
  • the radius of curvature of the path of movement of the stripping member is particularly advantageously kept in the order of magnitude of the flat material thickness, preferably even less than this.
  • Such a curved path of movement results in a comparatively steep direction of action of the lifting forces transmitted from the stripper to the flat material at the point of contact between the stripper and the flat material end edge, i.e. a particularly intensive and reliable wiping.
  • a rotationally driven friction or coating element comes into consideration, for example in the form of a brush roller of small diameter.
  • a brush roller of small diameter In many cases, however, it is difficult to make the brush diameter and thus the radius of curvature of the movement path in the area of the flat material end edge so small that the lifting force transmitted from the scraper member to the end edge is directed sufficiently steeply with respect to the contact surface and therefore not too large Front edge movement opposite force component occurs with a corresponding compression effect.
  • a scraper belt running over a supporting body is therefore provided as the scraper member.
  • a section of the support body located in the area of the flat material end edge can be designed in such a way that it forms a sufficiently strongly curved and for the function of lifting off from the strip.
  • this support body When used for an ironing roller or the like, this support body is expediently used as an extension that extends parallel to the roller axis, last or knife-shaped element which is arranged with a cutting-like deflecting edge with a strongly curved cross-section along a roll surface line and at a short distance from the roll circumference or in contact with the roll surface.
  • the desired dimensioning of the radius of curvature of the movement path in the area of the material thickness can be achieved comparatively easily.
  • the leather ironing machine shown in FIG. 1 comprises a transport roller 1 mounted below the material pass path, which is provided in a conventional manner and therefore not shown with a suitable rotary drive and a pressing device 1 a acting vertically upwards on the bearings of the transport roller.
  • a heating device for example a liquid internal heater 2a.
  • the two axially parallel-mounted rollers are in mutual pressure contact on their circumference during the rotation according to the indicated direction of the bearing, so that the leather pieces 3, after the feed has been spread out, are grasped via an input table 4 in the roller pack and passed through the pressure and heat treatment zone.
  • a stripping device AV is therefore provided in the exit region of the ironing roller with stripping means AM acting in the region of the circumference of the ironing roller 2, just behind the treatment zone.
  • these stripping means are formed by a scraper belt SB with a support body TR, which is formed at its lower end facing the ironing roller 2 as a bar L with a knife-like, strongly curved deflection edge UK that extends across the width of the ironing roller.
  • the strip SB also extends over the width of the ironing roller 2 and runs in the manner shown in FIG. 1 over the deflection edge.
  • the scraper belt SB is wound on both sides of the supporting body TR and is supported on the rollers W1 and W2, respectively, with a belt length that allows a belt passage at the deflection edge UK sufficient for at least one stripping process.
  • the rollers Wl and W2 are each coupled with a reversible winding motor WMl or WM2.
  • the drive of the belt is carried out with the help of these motors and a suitable, known, for example, electronic control and optionally additionally with the aid of tensioning rollers in such a way that sufficient belt tension and flawless system is guaranteed when running over the deflection edge UK.
  • the two winding motors are switched on in each case before a leather front edge passes through the treatment zone in a direction of rotation in accordance with the direction of belt travel according to arrow P1.
  • a leather front edge passes through the treatment zone in a direction of rotation in accordance with the direction of belt travel according to arrow P1.
  • adhering to the ironing roller leather front edge of the winding motors are switched to opposite directions of rotation, so that added to the original stock length on the roller W2 again will '.
  • the scraper is now ready for the next operation.
  • the stripping device AV is adjusted between a working position A and a rest position R by pivoting the entire supporting body TR with the rollers W1, W2 and the associated winding motors WM1, WM2 by one to the roller arrangement parallel horizontal axis X is provided.
  • the pivoting takes place with the aid of, for example, a pneumatic servomotor SM, as is schematically indicated in FIG. 1.
  • This servomotor engages on the one hand on the machine frame and on the other hand on an extended lever arm of the supporting body TR.
  • the support body TR assumes its rest position R, which is indicated in FIG. 1 only by a dash-dotted center line, the deflection edge UK of the bar L of the support body Surface of the ironing roller 2 is lifted. In this state, the run-off length of the strip SB intended for the stripping process is wound on the roller W2. Now the support body TR is moved into its working position A according to the associated dash-dot center line with the aid of the servomotor SM. In this position, the stripping device AV is shown in Fig. 1.
  • the deflecting edge UK lies against the surface of the ironing roller 2 with the scraper belt SB or takes up an extremely small distance from the roller surface.
  • the drive of the rollers W1 and W2 is switched on in the direction of the belt running direction P1.
  • the leather front edge adhering to the ironing roller 2 reaches the deflecting edge UK and comes into contact with the continuous strip SB.
  • the end edge is immediately lifted off the roller surface and is deflected downward on the underside of the strip L of the support body or on the section of the strip SB running here.
  • the emerging piece of leather can thus be picked up and stored by an operator or with additional aids not belonging to the subject matter of the invention.
  • the support body TR is returned to its rest position R by appropriate control of the servomotor SM and thus the deflecting edge UK is lifted off the hot surface of the ironing roller 2 with the continuous wiping tape.
  • the wrapper is therefore only exposed to the heat from the ironing roller for a short time interval.
  • the drive of the rollers W1 and W2 is then reversed, so that the length of the wiping tape that has expired is wound up again on the roller W2 in the direction of passage P2.
  • the stripping device is again in the initial state for the next operation.
  • FIG. 2 the device elements that are involved in the stripping process can be seen in detail, in particular the deflecting edge of the bar L of the support body TR with the streak SB running over it.
  • the front edge SK of the leather piece 3 located in the initial phase of the pass between the rollers 1 and 2 is indicated in FIG. 2 in its contact point with the deflection edge UK or the stripping band SB lying there.
  • the stripping process can be seen in detail from the illustration in FIGS. 3 and 4, which is kept on an even larger scale.
  • the working position shown in FIG. 3 corresponds to that according to FIG. 2.
  • the scraper belt SB running according to arrow P1 is tangential to the curved movement path B of the scraper belt, in the example at right angles to the surface of the ironing roller 2, ie Contact surface AF of the leather piece 3, directed lifting force Ks exerted.
  • the end edge SK runs up against the deflection edge UK a compressive force component Kc directed parallel to the contact surface AF on the leather. This compressive force is comparatively low, however, because the time interval between the start-up on the end face and thus the upsetting process until the take-off has taken place is extremely short.
  • the compressive force corresponds to the length of the leather piece that has run up to the completion of the lifting process and thus to the time interval of the lifting process.
  • the conditions indicated in the force parellogram according to FIG. 3 result, whereby the resulting force Kr at the front edge SK is only slightly inclined against the normal to the contact surface AF against the leather movement direction according to arrow P3, i.e. still very steep with respect to the Contact surface runs.
  • the end phase of the lifting process is indicated with the leather front edge SK already radially removed from the contact surface AF.
  • the front section of the leather piece 3 assumes its position indicated by the dashed lines on the underside of the bar L, with which the deflection from the ironing roller has already been initiated.
  • FIG. 5 schematically shows a wiper in an enlarged representation according to FIGS. 3 and 4 process with a bristle-like stripping roller SR instead of the stripping belt SB of the embodiment described above.
  • the scraper roller SR has a comparatively small diameter and is rotated about its axis of rotation Y parallel to the roller arrangement 1, 2 with the aid of a drive unit, not shown.
  • the bearing of the stripping roller SR is provided on a support body TR, which is designed essentially like the corresponding element of the embodiment according to FIG. 1.
  • the radius of curvature of the path of movement B of the stripping means can at most be brought approximately into the order of magnitude of the material thickness.
  • a curvature corresponding to the deflection edge UK of the bar L of the support body TR of the previous embodiment cannot be achieved.
  • a comparable freedom from upsetting of the leaking leather cannot be achieved with the embodiment according to FIG. 5.
  • the use of a scraper with a sharp-edged deflection in the lifting area of the flat material represents an optimum.
  • a stiffening roller provided that it is not too small Diameter must have certain advantages in terms of simplicity of the drive and space requirements.
  • a particularly intensive, practically form-fitting attack of the lifting force on the flat material can be achieved with such a stripping roller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
EP82110041A 1981-10-30 1982-10-30 Dispositif pour enlever un matériau plat, mou et flexible, en particulier le cuir, de la surface de travail d'un rouleau à repasser Expired EP0078528B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3143167 1981-10-30
DE19813143167 DE3143167A1 (de) 1981-10-30 1981-10-30 Abstreifvorrichtung fuer weichflexibles flachmaterial, insbesondere leder von der arbeitsflaeche einer buegelwalze

Publications (3)

Publication Number Publication Date
EP0078528A2 true EP0078528A2 (fr) 1983-05-11
EP0078528A3 EP0078528A3 (en) 1984-09-12
EP0078528B1 EP0078528B1 (fr) 1987-05-20

Family

ID=6145249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110041A Expired EP0078528B1 (fr) 1981-10-30 1982-10-30 Dispositif pour enlever un matériau plat, mou et flexible, en particulier le cuir, de la surface de travail d'un rouleau à repasser

Country Status (2)

Country Link
EP (1) EP0078528B1 (fr)
DE (2) DE3143167A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3051018A3 (fr) * 2015-01-27 2016-08-10 Herbert Kannegiesser GmbH Procédé et dispositif de repassage de linge
US10145058B2 (en) 2015-01-27 2018-12-04 Herbert Kannegiesser Gmbh Method and device for ironing items of laundry

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3939461A1 (de) * 1989-11-29 1991-06-27 Kela Spezialmaschinen Gmbh Durchlaufeinrichtung fuer die behandlung von leder und aehnlichen materialien

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2018719A (en) * 1934-05-23 1935-10-29 Baker Perkins Co Inc Device for cleaning and greasing conveyer bands
US3578151A (en) * 1968-11-29 1971-05-11 Leading Plywood Sheet conveyor system
DE2420901A1 (de) * 1974-04-30 1975-11-06 Hoffmann Herne Kg Reinigungseinrichtung von antrieben und umkehren an bandfoerderanlagen
DE2445933A1 (de) * 1974-09-26 1976-04-15 Selbeck & Co Warenzufuehrung an kaemmaschinen fuer pelzfelle und fellaehnlichem material
US3983888A (en) * 1975-02-07 1976-10-05 Omni-Lift, Inc. Method and apparatus for cleaning conveyor belts, with inclined flexible fingers
US3957155A (en) * 1975-05-29 1976-05-18 Enchelmaier Harvard W K Conveyor cleaning device
GB2053120A (en) * 1979-07-06 1981-02-04 Coal Industry Patents Ltd Conveyor belt cleaning equipment
CH641118A5 (de) * 1979-10-23 1984-02-15 Grapha Holding Ag Verzweigungsvorrichtung fuer einen schuppenstrom.
DE2950346C2 (de) * 1979-12-14 1985-04-04 Drees, Christina Waschanlage für ein endloses Förderband

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3051018A3 (fr) * 2015-01-27 2016-08-10 Herbert Kannegiesser GmbH Procédé et dispositif de repassage de linge
EP3192918A1 (fr) * 2015-01-27 2017-07-19 Herbert Kannegiesser GmbH Procédé et dispositif de repassage de linge
US10145058B2 (en) 2015-01-27 2018-12-04 Herbert Kannegiesser Gmbh Method and device for ironing items of laundry

Also Published As

Publication number Publication date
EP0078528B1 (fr) 1987-05-20
DE3143167A1 (de) 1983-05-11
EP0078528A3 (en) 1984-09-12
DE3276375D1 (en) 1987-06-25

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