EP0303168A1 - Durchlauf-Abwelkpresse - Google Patents

Durchlauf-Abwelkpresse Download PDF

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Publication number
EP0303168A1
EP0303168A1 EP19880112613 EP88112613A EP0303168A1 EP 0303168 A1 EP0303168 A1 EP 0303168A1 EP 19880112613 EP19880112613 EP 19880112613 EP 88112613 A EP88112613 A EP 88112613A EP 0303168 A1 EP0303168 A1 EP 0303168A1
Authority
EP
European Patent Office
Prior art keywords
press
belt
felt
wilting
nip
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.)
Withdrawn
Application number
EP19880112613
Other languages
German (de)
English (en)
French (fr)
Inventor
Horst Dipl.-Ing. Zäpfel
Erich Gabelmann
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.)
TURNER MASCHINENBAU GMBH
Original Assignee
Turner 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 Turner Maschinenbau GmbH filed Critical Turner Maschinenbau GmbH
Publication of EP0303168A1 publication Critical patent/EP0303168A1/de
Withdrawn legal-status Critical Current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
    • C14B1/30—Pressing or rolling leather
    • C14B1/34—Pressing or rolling leather by rotating movement of the pressing or rolling elements

Definitions

  • the invention relates to a continuous wilting press with at least one press nip formed between an upper and a lower press roll and two felt belts passed through the press nip, a conveyor belt being provided for feeding and removing the material to be dewatered.
  • Such dewing machines are primarily used for dewatering leather, skins, halves, necks and croupons, but can also be used for other dewatering purposes.
  • a pass-off wilting press of this type is known from the brochure "Pass-through wilting press 594" from Moenus-Turner GmbH August 1982.
  • the lower felt belt also serves as a conveyor belt.
  • the upper felt belt is guided around the upper press roll. Both felt belts therefore pass through both press nips.
  • the invention is based on the object of specifying a continuous wilting press of the type described at the outset, with which the degree of dewatering is improved and the material to be dewatered can be treated more gently.
  • the conveyor belt is a sieve belt passed through the press nip between the felt belts and the lower felt belt around the lower press roller.
  • the splash water which arises when the layering is compressed from the two felt belts and the material to be dewatered at the inlet side of the press nip can run off unhindered by the sieve belt. This means that a large part of the water to be removed is easily removed.
  • the felt belts are able to absorb further water from the material to be dewatered and from the sieve belt at the outlet end of the press nip as a result of the pressure relief. Overall, there is a better degree of drainage. You can also increase the throughput speed and / or reduce the pressure under otherwise identical conditions. The latter leads to protection of the material to be dewatered and also to protection of the felt, so that there is a longer service life.
  • the screen belt has a surface that is similar to leather, felt and the like. has a lower friction resistance than felt. Compensatory movements can therefore take place between the two felt belts and the good or between parts thereof, if this is necessary. This is the case, for example, if there are different radii of the transport path and thus different transport speeds due to differences in thickness in the leather. As a result, the felt belts and the material to be drained are protected to a high degree.
  • the belt and the lower felt band lie on top of one another for a predetermined section following the press nip.
  • the screen belt and the material on it are further dewatered by the pressure-relieved lower felt belt for a certain period of time.
  • the screen belt and the upper felt belt are passed through an upstream press nip between an upper and a second lower press roll.
  • This upstream press nip serves the main squeeze out a lot of water.
  • the water that builds up in front of the press nip simply runs down through the sieve. As a result, the residual drainage in the subsequent press nip is facilitated, so that overall a very dry material results.
  • the upper felt belt is guided around the upper press roll associated with the upstream press nip and the screen belt only touches the second lower press roll near the upstream press nip. Since the screen belt is at a distance from the lower press roll in front of the press nip, the water runs off particularly well.
  • two lower press rolls interact with a common upper press roll.
  • This structure corresponds to the known wilting press mentioned at the beginning. In the present context, however, it has the additional advantage that the water can run off well between the two lower press rolls.
  • the at least one press nip should be preceded by a spreading device in which the screen belt is passed between a spreading roll and a counter roll.
  • Spreaders are common to stretch the leather or other good to be drained and thereby remove wrinkles. This smoothing function was hampered by the fact that the material to be dewatered could hardly be moved on the felt belt. However, if the material is passed through the spreading device on the sieve belt, the friction values are so low that there is a substantially improved spreading effect.
  • the invention is explained below with reference to a preferred embodiment shown in the drawing.
  • the single drawing shows a schematic longitudinal section through a continuous wilting press according to the invention.
  • An upper driven press roll 2 and two lower press rolls 3 and 4 are mounted in a machine frame 1.
  • the two lower press rolls can be pressed against the upper press roll with the aid of pneumatic pressure pads, not shown. In this way there are two press nips 5 and 6.
  • An endless felt belt 7 is guided around the upper press roll 2, which also wraps around a deflection roll 8, which can be displaced in the horizontal direction by a tensioning device 9.
  • the lower press roll 3 carries an elastic cover 10, for. B. made of rubber.
  • a lower felt belt 11 is guided around the lower press roll 3 and also wraps around a deflecting roll 12.
  • a screen belt 13 is passed through a spreading device 14, the two press nips 5 and 6 and four deflection rollers 15, 16, 17 and 18.
  • the lower felt belt 11 and the sieve belt 13 can also be tensioned in a similar manner to the upper felt belt 7.
  • the guide roller 18 is assigned a support table 20.
  • the spreading device 14 has a spreading roller 21 and a counter roller 23 provided with an elastic coating 22.
  • the spreading roller 21 can be pressed against the counter roller 21 by means of a pneumatic servomotor 19. It has a spreading profile 24, which is generally formed by helically running knives with an opposite pitch in both halves.
  • the lower felt belt 11 remains in contact with the sieve belt 13 behind the press nip 6 over a section 30 of predetermined length.
  • the sieve belt 13 is not only used for transport and drainage, but also results in a low-friction separation layer.
  • the material can move in sections on the sieve belt 13 without difficulty under the influence of the spreading roller 21.
  • the screen belt separates the upper felt belt from the elastic cover 10 and in the second press nip 6 from the lower felt belt 11. Frictional wear between the parts mentioned is therefore no longer possible. This extends the lifespan.
  • each press nip can also consist of a pair of rollers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
EP19880112613 1987-08-12 1988-08-03 Durchlauf-Abwelkpresse Withdrawn EP0303168A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3726757 1987-08-12
DE19873726757 DE3726757A1 (de) 1987-08-12 1987-08-12 Durchlauf-abwelkpresse

Publications (1)

Publication Number Publication Date
EP0303168A1 true EP0303168A1 (de) 1989-02-15

Family

ID=6333550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880112613 Withdrawn EP0303168A1 (de) 1987-08-12 1988-08-03 Durchlauf-Abwelkpresse

Country Status (4)

Country Link
US (1) US4888966A (en:Method)
EP (1) EP0303168A1 (en:Method)
DE (1) DE3726757A1 (en:Method)
YU (1) YU150788A (en:Method)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0384253A3 (fr) * 1989-02-22 1991-09-11 Tecnopelli S.R.L. Procédé pour l'étirage et le séchage des peaux à la sortie de l'opération de teinture
EP0501565A1 (fr) * 1991-02-25 1992-09-02 F.B.P. PLANNING S.r.l. Procédé pour presser, déshumidifier et conditionner des peaux detrempées, ainsi que machine à fonctionnement continu pour la mise en oeuvre de ce procédé

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT249448Y1 (it) * 2000-12-28 2003-05-07 Rizzi 1857 S P A Pressa-calandra per l'asciugatura di pelli.
ITPD20010063A1 (it) * 2001-03-16 2002-09-16 Rizzi 1857 Spa Macchina per stendere pellami in una linea di asciugatura e procedimento di stenditura.
US6854301B1 (en) * 2004-04-13 2005-02-15 Albany International Corp. Extended nip press for the leather industry
US7964105B2 (en) * 2008-08-07 2011-06-21 William Harris Moss Method for improving belt press dewatering
IT1395786B1 (it) * 2009-09-14 2012-10-19 Dal Lago S R L Dispositivo di stenditura di pelli per impianti per conceria.
WO2015160866A1 (en) 2014-04-14 2015-10-22 UCP International Co. Ltd Display structure with modular electrical connector
WO2015189238A1 (fr) * 2014-06-12 2015-12-17 Diopass Sprl Dispositif de perforation d'un film
CN106362972B (zh) * 2016-08-30 2018-10-12 山东新大陆橡胶科技股份有限公司 用于轮胎橡胶组件的履带式除水装置
IT201700101932A1 (it) * 2017-09-12 2019-03-12 Evolution Tech S R L Presse da stiro e da stampa
KR101993133B1 (ko) * 2018-11-08 2019-09-30 (주)코로나 습식 피혁 스트레칭 장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322201A1 (fr) * 1975-08-30 1977-03-25 Dokoupil Jiri Procede et dispositif pour essorer le cuir
EP0002739A1 (de) * 1977-12-22 1979-07-11 Louis Schweizer GmbH & Co. KG Lederfabrik Abwelkpresse
DE3427002A1 (de) * 1984-07-21 1986-01-23 BMD Badische Maschinenfabrik Durlach GmbH, 7500 Karlsruhe Abwelkmaschine fuer leder

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2358334A (en) * 1942-06-02 1944-09-19 United Shoe Machinery Corp Machine for treating sheet material
DE2010823A1 (de) * 1969-04-17 1970-11-05 Stätni vyzkumny üstav kozedelny, Gottwaldov (Tschechoslowakei) Vorrichtung für eine kontinuierliche Entwässerung von Plachmaterialien, insbesondere Ledern
US3613564A (en) * 1969-08-13 1971-10-19 Gen Am Transport Sludge-dewatering apparatus
SU569597A1 (ru) * 1973-01-02 1977-08-25 Харьковское Меховое Производственное Объединение N1 Машина дл глажени меховых шкур
IT1042273B (it) * 1975-09-03 1980-01-30 Rizzi & Co Spa Luigi Pressa a nastri continui per la asciugatura di pelli e simili con estrazione laterale dei nastri
US4427157A (en) * 1977-09-15 1984-01-24 Max Klein Preparation of styrene-polymer and polyolefin micro-bits
US4475453A (en) * 1981-02-17 1984-10-09 Envirotech Corporation Liquid-solid separation utilizing pressure rolls covered with elastomeric layers
US4697511A (en) * 1981-02-17 1987-10-06 Envirotech Corporation Composite roll covering for expressing machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322201A1 (fr) * 1975-08-30 1977-03-25 Dokoupil Jiri Procede et dispositif pour essorer le cuir
EP0002739A1 (de) * 1977-12-22 1979-07-11 Louis Schweizer GmbH & Co. KG Lederfabrik Abwelkpresse
DE3427002A1 (de) * 1984-07-21 1986-01-23 BMD Badische Maschinenfabrik Durlach GmbH, 7500 Karlsruhe Abwelkmaschine fuer leder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0384253A3 (fr) * 1989-02-22 1991-09-11 Tecnopelli S.R.L. Procédé pour l'étirage et le séchage des peaux à la sortie de l'opération de teinture
EP0501565A1 (fr) * 1991-02-25 1992-09-02 F.B.P. PLANNING S.r.l. Procédé pour presser, déshumidifier et conditionner des peaux detrempées, ainsi que machine à fonctionnement continu pour la mise en oeuvre de ce procédé

Also Published As

Publication number Publication date
YU150788A (en) 1989-12-31
DE3726757C2 (en:Method) 1989-12-28
US4888966A (en) 1989-12-26
DE3726757A1 (de) 1989-02-23

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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