EP1076101A2 - Procédé et dispositif pour plier des piles de feuilles - Google Patents
Procédé et dispositif pour plier des piles de feuilles Download PDFInfo
- Publication number
- EP1076101A2 EP1076101A2 EP00112062A EP00112062A EP1076101A2 EP 1076101 A2 EP1076101 A2 EP 1076101A2 EP 00112062 A EP00112062 A EP 00112062A EP 00112062 A EP00112062 A EP 00112062A EP 1076101 A2 EP1076101 A2 EP 1076101A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- conveyor
- pile
- machine
- belt
- objects
- 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- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/02—Folding limp material without application of pressure to define or form crease lines
- B65H45/04—Folding sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/26—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles
- B65H29/36—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles from tapes, bands, or rollers rolled from under the articles
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/42—Piling, depiling, handling piles
- B65H2301/422—Handling piles, sets or stacks of articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/42—Piling, depiling, handling piles
- B65H2301/422—Handling piles, sets or stacks of articles
- B65H2301/4227—Deforming piles, e.g. folding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/178—Hide, leather or skin
Definitions
- This invention relates to a method for folding piles of flexible objects in sheet form, in particular skins, to form bunches, and a machine for implementing the method.
- the term "bunch of skins” generally means a pile of skins folded into two or four parts, depending on requirements.
- a pile is firstly formed on a conveyor belt using skins leaving an upstream machine, generally a measuring machine, and is then transferred onto an underlying moving collection belt. After one half of the length of the pile of skins has been deposited on the collection belt the direction of movement of this latter is reversed, so folding the second half of the pile onto the first half, If the piles is to be again folded, it is transferred onto a further collection belt, which is operated in the same manner as the preceding.
- each folding passage is completed after the entire length of the pile of skins to be folded has passed beyond the edge of the upstream belt, to be collected on the downstream belt, this requiring a time which has to be added to the time normally set by the required working rate for forming the pile, and can never be reconciled with the need to achieve high production rates.
- the piles must firstly be folded into two parts, after which the pile already folded into two parts has to be again folded, with further working time increase.
- One of these drawbacks is the large overall size of the machine, which besides comprising a skin pile-forming belt conveyor, of length at least equal to the maximum length of the skins to be piled, it must also comprise a collection belt conveyor by a distance at least equal to one half the maximum length of the skins.
- the invention also foresees a machine as described in claim 4.
- the folding machine of the invention is shown downstream of a further skin processing machine, indicated overall by 4 and consisting in the illustrated example of a traditional measuring machine comprising a series of skin surface measurement rollers 6, a stamper 8 for stamping the resultant measurement, and an exit belt conveyor 10.
- the folding machine 2 comprises, on a fixed frame 12, an auxiliary belt conveyor 14 with its belt drivable in both directions relative to its support structure, which can traverse longitudinally to the frame 12, along guides 13 provided on the frame of the measuring machine 4, between an advanced position in which it totally projects beyond the exit conveyor 10 of said measuring machine 4, and a retracted position in which it lies below said conveyor 10.
- the frame 12 of the folding machine 2 also supports, for forming the pile of skins, a belt conveyor 16 consisting of two mutually aligned portions 16' and 16 '' spaced apart to define between them a transverse gap 18 of width a least equal to double the maximum height of the pile of skins to be formed.
- the two portions 16' and 16'' of the forming conveyor 16 are fixed, in the sense of not being able to traverse, relative to the folding machine frame 12 and support two belts driven in opposite directions drivable forward the gap 18.
- the two belts are preferably in both directions in order to increase the range of performance obtainable by the machine, although for pile folding purposes it is sufficient for the belts of the two portions 16' and 16'' of the forming conveyor 16 to be able to be driven with simultaneous opposing advancement.
- That end part of the portion 16'' closer to the measuring machine 4 is preferably hinged to the remaining part and can pass from a position coplanar with it to a downwardly rotated position (see drawing).
- the frame 12 In a position below the forming conveyor 16 the frame 12 supports a collection belt conveyor 20.
- This comprises a structure fixed relative to the frame 12 and a belt drivable in both directions of advancement.
- the fixed structure of the collection conveyor 20 has a length substantially equal to the total length of the forming conveyor 16, but is located within the frame 12 in a slightly more advanced position, so that its dowstream end projects beyond said forming conveyor 16.
- the collection conveyor 20 has a length less than, but equal to at least one half of, the overall length of the forming conveyor 16, its structure being able to traverse longitudinally relative to the support frame 12 in a manner such that a portion of said conveyor always faces the gap 18 defined by the two portions 16' and 16'' of the forming conveyor 16.
- the folding machine of the invention operates in the following manner:
- the skins leaving the measurement rollers 6 of the measuring machine 4 are collected by its exit conveyor 10 which transfers them to the auxiliary conveyor 14 which, by the effect of its traversing movement and belt advancement, form the pile ok skins in traditional manner on the forming conveyor 16 in the desired mutual arrangement.
- the piles is to be folded into four, it is sufficient to reverse the direction of advancement of the collection conveyor 20 during the middle of its deposition stage, to cause the second part of the pile, which is already folded into two during its descent through the gap 18, to fold onto its first part already deposited on the conveyor 20.
- the pile of skins folded into two or four can also be deposited onto the conveyor 20 by simply causing the belt support structure of the collection conveyor 20 to traverse in one of both directions without driving its belt.
- this embodiment would appear less advantageous than the preceding in that the conveyor 20 still has to be provided with belt drive means to enable the bunch of skins, ie the folded pile, to be discharged downstream.
- the method of the invention is very advantageous compared with traditional methods, and in particular:
- the folding machine of the invention is also very advantageous compared with traditional machines, and in particular:
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Knitting Of Fabric (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITVE990034 | 1999-08-10 | ||
IT1999VE000034 IT1311798B1 (it) | 1999-08-10 | 1999-08-10 | Procedimento di piegatura di pile di oggetti flessibili in foglio, inparticolare di pelli, per formare mazzi e macchina per attuare il |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1076101A2 true EP1076101A2 (fr) | 2001-02-14 |
EP1076101A3 EP1076101A3 (fr) | 2001-06-13 |
Family
ID=11424469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00112062A Withdrawn EP1076101A3 (fr) | 1999-08-10 | 2000-06-05 | Procédé et dispositif pour plier des piles de feuilles |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1076101A3 (fr) |
IT (1) | IT1311798B1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003066909A1 (fr) * | 2002-02-06 | 2003-08-14 | Ger Elettronica S.R.L. | Procede servant a constituer des paquets de peaux et machine servant a mettre ce procede en application |
WO2021254651A1 (fr) * | 2020-06-17 | 2021-12-23 | Ahlstrom-Munksjö Oyj | Procédé et appareil pour plier une pile de feuilles |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1186407B (de) * | 1962-03-07 | 1965-01-28 | Strojosvit Np | Vorrichtung zum Stapeln von flachem, weichem Material |
EP0198777A1 (fr) * | 1985-04-09 | 1986-10-22 | Charvo S.A. | Machine pour le pliage automatique des peaux tannées |
-
1999
- 1999-08-10 IT IT1999VE000034 patent/IT1311798B1/it active
-
2000
- 2000-06-05 EP EP00112062A patent/EP1076101A3/fr not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1186407B (de) * | 1962-03-07 | 1965-01-28 | Strojosvit Np | Vorrichtung zum Stapeln von flachem, weichem Material |
EP0198777A1 (fr) * | 1985-04-09 | 1986-10-22 | Charvo S.A. | Machine pour le pliage automatique des peaux tannées |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003066909A1 (fr) * | 2002-02-06 | 2003-08-14 | Ger Elettronica S.R.L. | Procede servant a constituer des paquets de peaux et machine servant a mettre ce procede en application |
WO2021254651A1 (fr) * | 2020-06-17 | 2021-12-23 | Ahlstrom-Munksjö Oyj | Procédé et appareil pour plier une pile de feuilles |
Also Published As
Publication number | Publication date |
---|---|
EP1076101A3 (fr) | 2001-06-13 |
IT1311798B1 (it) | 2002-03-19 |
ITVE990034A1 (it) | 2001-02-10 |
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