EP0368769A1 - Verfahren und Vorrichtung zur Behandlung von Häuten oder Leder - Google Patents

Verfahren und Vorrichtung zur Behandlung von Häuten oder Leder Download PDF

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Publication number
EP0368769A1
EP0368769A1 EP89420426A EP89420426A EP0368769A1 EP 0368769 A1 EP0368769 A1 EP 0368769A1 EP 89420426 A EP89420426 A EP 89420426A EP 89420426 A EP89420426 A EP 89420426A EP 0368769 A1 EP0368769 A1 EP 0368769A1
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EP
European Patent Office
Prior art keywords
skin
leather
skins
line
handling
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.)
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Application number
EP89420426A
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English (en)
French (fr)
Inventor
Roger Allamanche
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Individual
Original Assignee
Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP0368769A1 publication Critical patent/EP0368769A1/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Withdrawn legal-status Critical Current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
    • C14B1/62—Winding or stacking hides or leather
    • 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
    • C14B17/06—Work feeding or clamping devices

Definitions

  • the present invention relates to the technical field of handling, in the general sense, of skins or hides, treated or not, and coming, mainly, from mammals, such as equines, bovines, sheep or goats.
  • the skins have, after their removal from the body of the animal, a face called “hair side” and another face called “flesh side” which shows residues of flesh and fat as well as numerous blood vessels.
  • hair side a face called “hair side”
  • farlesh side a face called “flesh side” which shows residues of flesh and fat as well as numerous blood vessels.
  • Such fresh skins which have a considerable weight and size, must undergo, in order to be transformed into leathers, various processing operations during which numerous manipulations are necessary.
  • This salting technique consists, after a brief cleaning of the fresh skins on the flesh side, of stacking the skins flat with the flesh side placed above them, while proceeding to salting the skin side of the skins, prior to flattening the next upper skin. Stacks of skins up to 1 meter to 1.50 meters are thus obtained and kept in this state for a time necessary for the dehydration of the skins, with a view to preventing or stopping microbial development.
  • Another skins treatment operation concerns the crouponnage technique.
  • This technique aims, after removing the salt covering the skins, to cut each skin into four parts, namely, a croup, a collar and two flanks.
  • the handling personnel must grab the skins and shake them to rid the skins of the salt. Then, the personnel folds each skin along the line of extra thickness corresponding to the part covering the vertebral column of the animal, so as to allow the simultaneous cutting of the two sides of the skins.
  • the prior art has also proposed, by patent application DE-A-24 07 665 , an apparatus for handling the skins before an exchange operation.
  • the proposed device comprises two clamps each connected to a cable, which is intended to be wound on a drum controlled in rotation.
  • the clamps are intended to be placed on the places of the legs of a skin.
  • the present invention therefore aims to propose a new process suitable for the handling of skins or leathers during the various treatment operations and making it possible to overcome the various constraints imposed on the handling personnel and to eliminate the causes of deterioration of the skins. or leathers.
  • the invention aims to offer a method of storing skins in a stack, suitable for limiting alterations or storage defects.
  • the handling method according to the invention comprising a median line of back thickness delimited by extreme parts, called tail and forehead, of the type consisting in moving the skin to a work station or leather by means of two clamps of a handling device is characterized in that it comprises the following steps: - put clamps on the tail and forehead parts of a hide or leather, - proceed with the relative spacing of the clips between them to obtain a tension of the skin or the leather according to the line of extra thickness on the back, - lift the skin or leather to ensure, by its free suspension, its folding along the line of extra back thickness, - move the hanging skin or leather to the workstation in the folded position, - lay the skin or leather stretched and folded flat, on a workstation reception plan, - and remove the pliers from the tail and forehead parts of the skin or leather.
  • the invention also aims to provide a handling device suitable in particular for implementing the techniques of crouponnage and salting of stacked skins.
  • the invention also aims to offer a handling device of simple design and at a reduced cost.
  • the apparatus for implementing the method comprises two slings each equipped with a clamp for clamping a skin or a leather depending on its thickness, two means for spacing the slings one relative to the another according to at least one substantially horizontal plane and at least one motor member acting on at least one of the slings to ensure a relative distance from the clamps, is characterized in that the means are adapted to be separated from one another of a value at least greater than the length of a skin or leather, to ensure the folding and suspension of the skin or leather tightened by the clamps, according to its line of back thickness and in that the motor element is controlled to at least ensure a spacing of the clamps of a value corresponding to the length of a skin or of a leather making it possible to tighten the skin or the leather along the line of back thickness.
  • Fig. 1 illustrates an embodiment of an apparatus for implementing the method according to the invention ensuring the handling of skins or leathers, in the various treatment operations intended to transform fresh skins into leather.
  • skins or leathers it should be understood those or those coming, mainly, from mammals, such as equines, bovines, sheep or goats.
  • the apparatus comprises two slings or cables 1 , made of any suitable material and each equipped, at one of its ends, with a clamp 2 adapted for tightening, depending on its thickness, a skin or of a leather P resting, for example, on a ground S.
  • each clamp 2 comprises two jaws 3, 4 articulated together and each having a clamping surface arranged to preferably include protruding imprints 5 .
  • the jaws 3, 4 are urged closer together by an elastic member, not shown, to exert a determined effort to tighten the skin while not damaging the leather.
  • the jaw, for example 5 is provided with a lever 6 ensuring the attachment of the sling and the opening of the clamp which can be locked in this position, for example, by means of an elastic ball cooperating with a complementary cavity, not shown.
  • the apparatus also comprises two means 8 for separating the slings 1 from one another, along at least one substantially horizontal plane and the function of which will be better understood in the following description of the process according to the invention.
  • the spacing means 8 are constituted, in the example illustrated, by two pulleys cooperating with the slings and each adapted to one of the ends of a heavy beam 11 extending substantially in a horizontal plane.
  • Each pulley 8 is preferably associated with a downstream counter pulley 12 and an upstream counter pulley 13 , making it possible to obtain suitable cooperation of the slings with the pulleys 8 .
  • the beam 11 is carried by a superimposed frame 14 , by means of at least two spaced rods 15 , integral with the beam and intended to be guided in vertical sliding by bearings 16 fixed on the frame 14 .
  • the rods 15 are provided, at their free end portion, with a stop stop 17 able to cooperate with the transverse face of the bearing to limit the vertical downward sliding of the beam 11 .
  • the frame 14 constituted in the form of a bar, carries, substantially in its median part, a plate 18 for adapting at least one controlled drive member 19 acting on at least one and, preferably, on the two slings 1 .
  • the driven motor member 19 is preferably constituted by a motor 19 a controlling in rotation a double drum 19 b on which are fixed the ends of the slings opposite to those carrying the clamps.
  • the slings 1 are mounted on the drum 19b , so that the two slings are wound or take place simultaneously, in relation to the direction of rotation of the motor 19a .
  • the frame 14 is preferably equipped with two return pulleys 21 mounted at each end of the frame to cooperate each with a sling.
  • the frame 14 carries two levers 22 each articulated to the frame in close relation with a return pulley 21 .
  • Each lever 22 is provided, at its free end, with a roller 23 cooperating with a sling allowing the tensioning of the sling.
  • the frame 14 is, for example, suspended from a rail 24 , by means of rollers 25 carried by extensions 26 of the plate 18 .
  • rollers 25 carried by extensions 26 of the plate 18 .
  • at least one of the rollers 25 is controlled in rotation by a motor 27 making it possible to move the device along the running rail 24 .
  • the frame 14 is provided with wheels 28 cooperating with a support structure 29 carrying the rail 24 and adapted on a ceiling 30 .
  • the apparatus described above makes it possible to implement the handling method according to the invention for a skin or a leather P having, as illustrated in FIG. 4 , a line L of extra thickness corresponding to the part of skin initially covering the vertebral column of the animal.
  • the extra thickness line L is delimited at its ends by so-called tail Q and front F parts , in relation to the corresponding regions of the animal's body initially covered by the skin.
  • the method according to the invention consists in placing the clamps 2 on the front F and tail Q parts of the skin or of the leather P to be handled.
  • the skin or leather P illustrated in fig. 4 , be shown fully unfolded, it should be considered that the method of the invention can be implemented with skins or leathers which can be in various forms and, in particular, in bulk, folded and / or superimposed regularly or not .
  • the clamps 2 are engaged, by their jaws 3, 4 , on the forehead F and tail Q parts of the skin or leather to keep the skins or the leathers firmly tightened.
  • the motor 19 a is then controlled to obtain the winding of the slings 1 on the drum 19 b .
  • the skin or leather P is thus stretched, folded in two parts and suspended freely under the beam 11 and between the pulleys 8 .
  • the pulleys 8 are distant from each other by a value at least greater than the length of the skins to be handled, so as to authorize the suspension, between the pulleys 8 , of skins or leathers having various sizes.
  • spacing means 8 of a different type and / or to move at least one of the means 8 in a substantially horizontal plane, directly or not, by a drive member. allowing to assume the same function, that is to say, a spacing of the clamps to stretch the skin or the leather.
  • the motor 27 is controlled in rotation to move the frame 14 along the rail 24 to a determined work station T ( fig. 6 ).
  • the motor 19 a is then controlled in rotation to unwind the slings 1 , so that the beam 11 descends until the stops 17 cooperate with the transverse faces of the bearings 16 . Slings continue their descent until the motor stops 19a which occurs when skin or leather is laid flat, in the folded position on a receiving station plan, consisting, for example, by the ground.
  • the motor 27 can be controlled to return the device to its initial position and start another handling cycle.
  • the apparatus described above makes it possible to implement a new method of salting in pile fresh skins consisting of obtaining, during the lifting operation, the folding of the skins according to the line of back thickness L , with the flesh side placed externally and the hair side of the two strips of skins placed one against the other.
  • Such folding can be easily obtained by placing, before adapting the pliers, the flesh side directed towards the beam 11 and the bristle side towards the ground.
  • the movement of the skin in the hanging position can be used to carry out natural or forced cooling and / or cleaning of the flesh side of the fresh skin which shows residues of flesh and fat, as well as numerous blood vessels.
  • the cleaning and / or cooling of the skin can consist, for example, of subjecting the latter to jets of water.
  • the duration of movement of the skin, after cleaning is chosen to allow a natural flow of water, so as to obtain a drained skin at the work station.
  • a forced drying station between the cleaning station and the work station.
  • the reception area for the skins of the work station is subjected, prior to the deposition of the first skin, to salting which is also carried out after the deposition of the skin on the flesh side of the skin placed above.
  • the device can be controlled to bring, successively, other skins which are each deposited on the previously salted skin and laid flat.
  • the skins are preferably deposited to partially overlap and constitute a row R1 formed by a series of skins P between each of which is interposed a layer of salt s .
  • the salting of the skins can be carried out automatically by the machine provided, for this purpose, with a salt storage tank ( fig. 6 ) mounted, for example, on the beam 11 and controlled to deliver a quantity salt determined on the skin previously laid flat.
  • the skins are offset two by two by a value d between 10 and 50 cm. Furthermore, it can be carried out to form an upper row superimposed on the row R1 and so on, to constitute a pile P pile for storing skins allowing the dehydration of the skins.
  • the process for storing cleaned, folded and placed flesh against flesh limits the contact of the salt with the leather side, which avoids major storage defects.
  • the rail 24 can be provided, at its ends, with rolling members intended to cooperate with a suspended track 32 being established, for example, in a direction perpendicular to that of the rail, so as to authorize the formation of stacks of skins P2, P3 ... P n , formed side by side.
  • such an apparatus can be used in a slaughterhouse for handling fresh hides arriving from the slaughter line, by a feed chute 33 .
  • this device is controlled by a circuit making it possible to control, in particular, the motor member for winding the slings and the motors moving the device on the rail and the track.
  • the control circuit is associated, in particular, with sensors not shown, at the end and at the start of the stroke and with proximity detection to detect the distance between the reception plane and the beam.
  • the circuit can be of the programmable type, so as to control the device automatically according to a training and battery management cycle.
  • this device in the application of salting and storage of skins is particularly advantageous, insofar as this device eliminates, in particular, the main constraints of the handling personnel. Indeed, the personnel must, essentially, put in place and, if necessary, remove the pliers from the forehead and tail parts of the skins.
  • this device makes it possible to constitute stacks formed of perfectly overlapping rows, insofar as the skins or leathers are always positioned in the same place between the pulleys 8 . To synchronize the movement of these pulleys, provision may be made to connect the two pulleys 13 by a crossed belt 33 ( FIG. 5C ).
  • the apparatus described above also finds a particularly advantageous application in the technique of crouponnage which aims to cut skins previously salted and, in general, stored in stacks.
  • the device is particularly suitable for ensuring the movement of the skins from a storage stack to a reception plane constituted by a cutting table.
  • the suspension of the skins, during their movement, makes it possible to rid the skins of the salt which falls by gravity.
  • the skins are folded, for this technique, along the line of extra back thickness, by placing the hair side outwardly to allow it to be cut properly.
  • the skins are laid flat and folded perfectly according to the extra thickness line, allowing a precise cutting of the skin parts, allowing the obtaining of leather parts of homogeneous structure.
  • the apparatus according to the invention can be used to carry out various manipulations appearing during the various operations for transforming fresh skin into leather.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
EP89420426A 1988-11-07 1989-11-06 Verfahren und Vorrichtung zur Behandlung von Häuten oder Leder Withdrawn EP0368769A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8815187 1988-11-07
FR8815187A FR2638762B1 (fr) 1988-11-07 1988-11-07 Procede et appareil de manutention de peaux ou de cuirs

Publications (1)

Publication Number Publication Date
EP0368769A1 true EP0368769A1 (de) 1990-05-16

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ID=9372098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420426A Withdrawn EP0368769A1 (de) 1988-11-07 1989-11-06 Verfahren und Vorrichtung zur Behandlung von Häuten oder Leder

Country Status (3)

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US (1) US5050409A (de)
EP (1) EP0368769A1 (de)
FR (1) FR2638762B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108103248A (zh) * 2017-12-26 2018-06-01 阜阳市卓创科技服务生产力促进中心 一种用于挂晾羊皮的自动装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5412889A (en) * 1993-04-06 1995-05-09 Giftec, Ltd. Ornamental display assembly having reciprocating and rotating decorative elements
US20050278905A1 (en) * 2004-02-05 2005-12-22 Eagle Ottawa, Llc Toggle clamp assist tool
US8091390B2 (en) * 2006-08-16 2012-01-10 Cargill, Incorporated Hide folding system and method
ITVI20120182A1 (it) * 2012-07-26 2014-01-27 Feltre Srl Impianto di raffreddamento per pelli scuoiate

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2407665A1 (de) * 1974-02-18 1975-08-21 Dokoupil Jiri Verfahren zur manipulation von schweren haeuten in gerbereien

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1682356A (en) * 1928-08-28 solomon
US4040278A (en) * 1976-12-17 1977-08-09 Northern Conveyor & Manufacturing Corporation Method of and apparatus for removing brine from hides
DE2711647A1 (de) * 1977-03-17 1978-09-21 Arenco Bmd Maschfab Verfahren zum entfleischen von haeuten und vorrichtung zur durchfuehrung des verfahrens
IT1093383B (it) * 1977-03-17 1985-07-19 Arenco Bmd Maschfab Procedimento per scarnire pelli e dispositivo per l'esecozione del procedimento
EP0044898A1 (de) * 1980-07-30 1982-02-03 C.C.E. s.r.l. Commissionaria Costruzioni Elettroniche Verfahren und Einrichtung zum raschen Trocknen insbesondere von Fellen
FR2579995B1 (de) * 1985-04-09 1987-05-29 Charvo Sa
SU1280013A1 (ru) * 1985-07-09 1986-12-30 Алма-Атинское Проектно-Конструкторское Технологическое Бюро Минмясомолпрома Казсср Агрегат дл посола шкур

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2407665A1 (de) * 1974-02-18 1975-08-21 Dokoupil Jiri Verfahren zur manipulation von schweren haeuten in gerbereien

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108103248A (zh) * 2017-12-26 2018-06-01 阜阳市卓创科技服务生产力促进中心 一种用于挂晾羊皮的自动装置

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Publication number Publication date
FR2638762A1 (fr) 1990-05-11
US5050409A (en) 1991-09-24
FR2638762B1 (fr) 1991-05-03

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