EP0519414A2 - Dispositif de pressage d'éléments en feuilles comme des peaux, tissus, cuir ou similaires - Google Patents

Dispositif de pressage d'éléments en feuilles comme des peaux, tissus, cuir ou similaires Download PDF

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Publication number
EP0519414A2
EP0519414A2 EP92110200A EP92110200A EP0519414A2 EP 0519414 A2 EP0519414 A2 EP 0519414A2 EP 92110200 A EP92110200 A EP 92110200A EP 92110200 A EP92110200 A EP 92110200A EP 0519414 A2 EP0519414 A2 EP 0519414A2
Authority
EP
European Patent Office
Prior art keywords
pressing apparatus
movable base
movable
abutment plane
comb
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Withdrawn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
EP92110200A
Other languages
German (de)
English (en)
Other versions
EP0519414A3 (en
Inventor
Carlo Bianchini
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.)
VIPA Srl Studio Progettazione Rappresentanze Conciarie
Original Assignee
VIPA Srl Studio Progettazione Rappresentanze Conciarie
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 VIPA Srl Studio Progettazione Rappresentanze Conciarie filed Critical VIPA Srl Studio Progettazione Rappresentanze Conciarie
Publication of EP0519414A2 publication Critical patent/EP0519414A2/fr
Publication of EP0519414A3 publication Critical patent/EP0519414A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/007—Means for maintaining the press table, the press platen or the press ram against tilting or deflection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
    • B30B1/323—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure using low pressure long stroke opening and closing means, and high pressure short stroke cylinder means
    • 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

Definitions

  • the present invention relates to a pressing apparatus particularly for sheet-like elements such as hides, fabrics, leather and the like.
  • the aim of the invention is indeed to solve the problems described above by providing a pressing apparatus particularly for sheet-like elements such as hides, fabrics, leather and the like, which allows to combine the typical advantages of hydraulic presses and mechanical presses without having their disadvantages.
  • a particular object of the invention is to provide a pressing apparatus wherein it is possible to use, for the press surface, one or more cylinders having an extremely large cross-section without however having to control a considerable flow of incoming or outgoing oil.
  • Another object of the present invention is to provide a pressing apparatus wherein the time required to move the press surface is extremely short, thus significantly reducing the dead times of the process.
  • a further object of the present invention is to provide a pressing apparatus which allows to have a distribution of the load on the press surface which is extremely uniform so as to obtain the best treatments.
  • Not least object of the present invention is to provide a pressing apparatus which allows to obtain high working pressures without thereby having to use high pressures in the hydraulic circuit.
  • Not least object of the present invention is to provide a pressing apparatus particularly for sheet-like elements such as hides, fabrics, leather and the like which can be easily obtained starting from commonly commercially available elements and materials and is furthermore highly competitive from a merely economic point of view.
  • a pressing apparatus particularly for sheet-like elements such as hides, fabrics, leather and the like, which comprises, inside a supporting frame, a fixed abutment plane and a movable abutment plane translatable with respect to said fixed abutment plane, the sheet-like element to be pressed being interposable between said abutment planes, characterized in that it comprises a movable base which supports said movable abutment plane, by the interposition of piston means, and is connected to said frame through translatory means for positioning it in an upper or working position and in a lower or loading and unloading position, supporting means being furthermore provided, said supporting means being interposed between said movable base and said frame and being engageable with said movable base in said upper position in order to support said movable base during the actuation of said piston means for pressing the sheet-like element interposed between said planes.
  • the pressing apparatus particularly for sheet-like elements such as hides, fabrics, leather and the like, according to the invention, comprises a supporting frame, generally designated by the reference numeral 1, which is of a substantially conventional type and has a lower cross-member 2 which is joined by means of uprights 3 to an upper cross-member 4.
  • a fixed abutment plane 5 is supported inside the frame 1, is usually connected to the lower face of the upper cross-member 4 and generally supports a plate which bears the impression of the pattern or the like to be impressed on the sheet-like element being treated.
  • a movable abutment plane 6 is arranged opposite to the fixed abutment plane 5, can translate with respect to the fixed abutment plane and supports, as usual, a layer made of felt or the like on which the sheet-like element to be pressed is applied.
  • an automatic conveyor-belt loader for moving the sheet-like element to be treated below the press planes.
  • the movable abutment plane 6 is supported by a movable base 10 with the interposition of piston means, generally designated by the reference numeral 11, which will be described in greater detail hereinafter.
  • the movable base 10 is supported by the frame 1 and more precisely by the lower cross-member 2 through translatory means constituted by hydraulic pistons 15.
  • the pistons 15 are arranged so that one is located at each corner of the movable base and have the function of producing the stroke for the approach and spacing of the movable abutment plane 6 toward or away from the fixed abutment plane 5.
  • Supporting means are interposed between the movable base 10 and the frame 1 and are advantageously defined by an upper comb 20, which is connected to the lower face of the movable base, and by a lower comb 21, which is associated with the lower cross-member 2.
  • the combs 20 and 21 are mutually intercalatable, when the movable base is in its lower or loading and unloading position, whereas they can be mutually superimposed, thus constituting a mechanical supporting element for the movable base, when said movable base is in its upper or working position and the pressing action is in progress.
  • the lower comb 21 can move transversely with respect to the upper comb 20 in order to arrange it in its two different working positions.
  • the pistons 15 are actuated by means of a pump 30 for feeding oil or a working fluid which, by means of a first distribution unit 31, feeds the pressurized oil into the pistons 15 until the movable base moves the abutment plane 6 proximate to the fixed abutment plane 5.
  • An ascent sensor 32 is furthermore provided which detects the approach of the movable abutment plane to the fixed abutment plane and activates a brake so as to slow down the last step of approach.
  • a descent sensor 33 is also provided which detects the retraction or lowering of the movable base, activating a descent brake on the last distance.
  • the ascent of the pistons 15 occurs until a device for sensing the position of the movable base, which can be constituted by a photocell or by a microswitch, both designated by the reference numeral 40, indicates that the combs 20 and 21 have moved away from one another, i.e. that the upper comb 20 has exceeded the height of the lower comb.
  • the microswitch 40 intervenes and activates a second distribution unit 41 which feeds the pressurized fluid to a transverse translatory motion cylinder 42 which acts on the lower comb, translating it until the teeth of the comb 20 are located at the teeth of the comb 21.
  • a first transverse translatory motion sensor 43 is activated and stops the translatory motion.
  • the cross-member 50 for supporting the lower comb 21 is mounted on rollers 51 with a horizontal axis which are supported, below said cross-member, by pairs of vertical pivots 52 with the interposition of elastic means 53 constituted, for example, by Belleville springs which, when no pressure bears on the movable base, in practice allow the rollers 51, which act as sliding means, to protrude, whereas when pressure is present the rollers retract into the cross-member 50 which rests on the frame 1.
  • lateral guiding bearings designated by the numeral 55, are provided and guide the translatory motion of the lower comb 21.
  • the intervention of the first vertical translatory motion sensor 43 activates a third distribution unit 60 which feeds oil to the piston means interposed between the movable base and the movable abutment plane.
  • piston means which have an extremely large useful cross-section which approximately corresponds to the useful area of the movable abutment plane.
  • the distribution unit 60 connects the piston means to the discharge until it is halted by the position detector, schematically designated by the reference numeral 40 in figure 7, and at this point the pumping means 30 deliver oil to the translatory motion cylinder 42 until its actuation is interrupted by the second translatory motion sensor 44.
  • the single-action pistons 15, inside which pressure had been maintained discharge their pressure, activating the first distribution unit 31 and allowing a fast spacing-apart of the movable abutment plane until the second descent sensor 33 intervenes and brakes the last portion of the stroke.
  • the materials employed, as well as the contingent shapes and dimensions may be any according to the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
EP19920110200 1991-06-19 1992-06-17 Pressing apparatus particularly for sheet-like elements such as hides, fabrics, leather and the like Withdrawn EP0519414A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI911667A IT1248499B (it) 1991-06-19 1991-06-19 Apparecchiatura pressante particolarmente per elementi lastriformi quali pelli, tessuti,cuoio e simili.
ITMI911667 1991-06-19

Publications (2)

Publication Number Publication Date
EP0519414A2 true EP0519414A2 (fr) 1992-12-23
EP0519414A3 EP0519414A3 (en) 1993-04-21

Family

ID=11360143

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920110200 Withdrawn EP0519414A3 (en) 1991-06-19 1992-06-17 Pressing apparatus particularly for sheet-like elements such as hides, fabrics, leather and the like

Country Status (2)

Country Link
EP (1) EP0519414A3 (fr)
IT (1) IT1248499B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103895251A (zh) * 2014-03-12 2014-07-02 陕西科技大学 一种湿法制革用真空压榨系统
CN107119152A (zh) * 2017-06-14 2017-09-01 嘉善龙翔人造毛绒有限公司 一种拉紧式皮革挤压装置
CN108750241A (zh) * 2018-07-13 2018-11-06 榆林学院 一种沟槽凸轮垃圾压缩打包装置及方法
CN110835658A (zh) * 2019-11-07 2020-02-25 蔡必建 一种自动皮带压花机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1309330A (fr) * 1961-10-02 1962-11-16 Perfectionnements aux presses d'injection
GB1030433A (en) * 1962-02-12 1966-05-25 Giuseppe Triulzi Press for closing a mould
FR2033442A5 (fr) * 1969-02-25 1970-12-04 Stephan Rech Meca Centre
US4038015A (en) * 1976-01-09 1977-07-26 Cincinnati Milacron, Inc. Hydraulic injection molding machine with compression ram
GB2025310A (en) * 1978-07-11 1980-01-23 Giusti Lino & C Europress Press having two diesdefining a mould cavity
WO1990009877A1 (fr) * 1989-03-03 1990-09-07 The Dow Chemical Company Presse de reaction et moulage par injection
EP0428792A2 (fr) * 1989-11-24 1991-05-29 Fico B.V. Appareil de moulage pour bande unique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1309330A (fr) * 1961-10-02 1962-11-16 Perfectionnements aux presses d'injection
GB1030433A (en) * 1962-02-12 1966-05-25 Giuseppe Triulzi Press for closing a mould
FR2033442A5 (fr) * 1969-02-25 1970-12-04 Stephan Rech Meca Centre
US4038015A (en) * 1976-01-09 1977-07-26 Cincinnati Milacron, Inc. Hydraulic injection molding machine with compression ram
GB2025310A (en) * 1978-07-11 1980-01-23 Giusti Lino & C Europress Press having two diesdefining a mould cavity
WO1990009877A1 (fr) * 1989-03-03 1990-09-07 The Dow Chemical Company Presse de reaction et moulage par injection
EP0428792A2 (fr) * 1989-11-24 1991-05-29 Fico B.V. Appareil de moulage pour bande unique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RESEARCH DISCLOSURE no. 267, July 1986, HAVANT GB page 443 ANONYMOUS 'MEANS FOR RUBBER PAD PRESSES' *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103895251A (zh) * 2014-03-12 2014-07-02 陕西科技大学 一种湿法制革用真空压榨系统
CN103895251B (zh) * 2014-03-12 2016-01-20 陕西科技大学 一种湿法制革用真空压榨系统
CN107119152A (zh) * 2017-06-14 2017-09-01 嘉善龙翔人造毛绒有限公司 一种拉紧式皮革挤压装置
CN108750241A (zh) * 2018-07-13 2018-11-06 榆林学院 一种沟槽凸轮垃圾压缩打包装置及方法
CN108750241B (zh) * 2018-07-13 2024-01-26 榆林学院 一种沟槽凸轮垃圾压缩打包装置及方法
CN110835658A (zh) * 2019-11-07 2020-02-25 蔡必建 一种自动皮带压花机

Also Published As

Publication number Publication date
EP0519414A3 (en) 1993-04-21
IT1248499B (it) 1995-01-19
ITMI911667A1 (it) 1992-12-19
ITMI911667A0 (it) 1991-06-19

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