ITVA20060027A1

ITVA20060027A1 - REMOVAL OF PLATINUM DIE CUTTERS

Info

Publication number: ITVA20060027A1
Authority: IT
Inventors: Alessandro Bardes
Original assignee: Titan Srl
Priority date: 2006-05-09
Filing date: 2006-05-09
Publication date: 2007-11-10

Description

Detto sistema, consiste principalmente di una fustella, costruita in modo da suddividere ogni rifilo in pezzi più piccoli, assolutamente non legati l'uno all'altro, abbinata a dispositivi per l'evacuazione automatica dei rifili all'esterno della macchina. Tali dispositivi possono includere alcuni (o tutti) i seguenti apparati: Said system mainly consists of a punch, constructed in such a way as to divide each trim into smaller pieces, absolutely not linked to each other, combined with devices for the automatic evacuation of the trimmings outside the machine. Such devices may include some (or all) of the following:

• Congegni per il distacco forzato dei rifili eventualmente ancora collegati al foglio, • Devices for the forced detachment of any trimmings still connected to the sheet,

• Congegni per la pulizia dei rifili caduti sul piano mobile, • Devices for cleaning trimmings fallen on the moving surface,

• Congegni per l'evacuazione di tutti i rifili dalla macchina • Devices for the evacuation of all trimmings from the machine

2.3) DESCRIZIONE: 2.3) DESCRIPTION:

Esso consiste principalmente (tavola 1) di una fustella A), di uno o più dispositivi di pulizia dai rifili Bl, B2) e C), e di un sistema d'evacuazione dei rifili sminuzzati D) It mainly consists (table 1) of a punch A), of one or more devices for cleaning the trimmings Bl, B2) and C), and of an evacuation system for the shredded trimmings D)

La fustella A), è costruita in modo da suddividere ogni rifilo in pezzi più piccoli, assolutamente non legati l'uno all'altro. Una forma costruttiva preferita, prevede filetti di taglio aggiuntivi, lungo tutto il bordo del foglio (per sminuzzare i rifili esterni), ed entro il corpo dei rifili interni, con lo stesso scopo (tavola 2, particolari A) e B)). Naturalmente la forma della fustella rappresentata nella tavola ha solo titolo esemplificativo. The punch A), is constructed in such a way as to divide each trim into smaller pieces, absolutely not linked to each other. A preferred constructive embodiment provides for additional cutting threads, along the entire edge of the sheet (to shred the external trimmings), and within the body of the internal trimmings, with the same purpose (table 2, details A) and B)). Of course, the shape of the die shown in the table is only an example.

Come risultato, non appena il piano mobile della platina si apre, detti rifili tendono a cadere per gravità separandosi dalle pose (il lavoro finito che s'intende conservare). As a result, as soon as the moving platen of the platen opens, said trimmings tend to fall by gravity separating them from the poses (the finished work that is intended to be preserved).

I dispositivi di pulizia dai rifili, possono essere di due tipi: The trimmings cleaning devices can be of two types:

Bl) di tavola 1. Dispositivi per il distacco degli eventuali residui di rifili rimasti entro il foglio dopo la fustellatura. Essi si applicano al caso in cui la fustellatrice a platina sia abbinata ad un mettilevafogli automatico (tavola 1, particolare E)). Hanno lo scopo di imprimere al foglio una brusca accelerazione momentanea, perpendicolare al suo piano. I ritagli di rifili, non essendo collegati al foglio, si staccano da esso cadendo sul piano mobile della platina. Bl) of table 1. Devices for detaching any trimmings residues left inside the sheet after punching. They apply to the case in which the platen die-cutter is combined with an automatic sheet feeder (table 1, detail E)). They have the purpose of imparting a sudden momentary acceleration to the sheet, perpendicular to its plane. The scraps of trimmings, not being connected to the sheet, detach from it and fall onto the movable plane of the platen.

Una forma costruttiva preferita per tale dispositivo, consiste in una camma aggiuntiva (particolare A) di tavola 3), posta sulla camma di comando (particolare B) di tavola 3) del braccio estrattore (particolare C) di tavola 3) relativo ai mettilevafogli abbinato alla fustellatrice a platina. Scegliendo con cura posizione, forma ed altezza di tale camma aggiuntiva, è possibile ottimizzare il momento in cui l'impulso di distacco viene applicato e la sua entità. Naturalmente le proporzioni del meccanismo descritto nella tavola hanno solo valore illustrativo. A preferred constructive form for this device consists of an additional cam (detail A) of table 3), placed on the control cam (detail B) of table 3) of the extractor arm (detail C) of table 3) relating to the combined sheet pickers to the platen die cutter. By carefully choosing the position, shape and height of this additional cam, it is possible to optimize the moment in which the detachment impulse is applied and its extent. Of course the proportions of the mechanism described in the table are for illustrative purposes only.

B2) di tavola 1. Ulteriori dispositivi per il distacco dei eventuali residiui di rifili rimasti entro il foglio dopo la fustellatura. Anch'essi si applicano al caso in cui la fustellatrice a platina sia abbinata ad un mettilevafogli automatico. Si tratta di congegni posti sulla struttura del mettilevafogli in posizione opportuna lungo il percorso del foglio, e tali da intercettare i ritagli di rifili allon tanandoli dal foglio stesso. Una forma costruttiva preferita per tali dispositivi prevede l'uso di soffianti ad aria, simili a quelli descritti al punto 3) qui sotto, cui si rimanda per ulteriori dettagli. B2) of table 1. Additional devices for detaching any residual trimmings left inside the sheet after punching. They also apply to the case in which the platen die-cutter is combined with an automatic sheet feeder. These are devices placed on the structure of the sheet feeder in a suitable position along the path of the sheet, and such as to intercept the scraps of trimmings moving them away from the sheet itself. A preferred constructive form for such devices provides for the use of air blowers, similar to those described in point 3) below, to which reference should be made for further details.

C) di tavola 1. Dispositivi di vero e proprio allontanamento dei ritagli di rifili dal piano mobile. Dato che il piano mobile passa dalla posizione quasi verticale a quella quasi orizzontale, i rifili non tendono a cadere per gravità ma piuttosto ad appoggiarsi su di esso. Essi potrebbero così intralciare il nuovo foglio in arrivo (per essere lavorato) e causare inconvenienti vari. È quindi necessario allontanare i ritagli di rifili dal piano mobile, ed una forma costruttiva preferita di tale dispositivo consiste in dispositivi soffianti (C) di tavola 1), posti lungo il bordo anteriore del piano mobile, ed azionati tramite aria compressa. Ovviamente, tramite appropriato organo di comando (valvola pneumatica) essi vengono comandati unicamente nel momento in cui sono necessari. C) of table 1. Devices for the actual removal of the scraps of trimmings from the mobile surface. Since the moving table passes from an almost vertical to an almost horizontal position, the trimmings do not tend to fall by gravity but rather to lean on it. They could thus interfere with the new incoming sheet (to be processed) and cause various inconveniences. It is therefore necessary to remove the scraps of trimmings from the movable plane, and a preferred constructive form of this device consists of blowing devices (C) of table 1), placed along the front edge of the movable plane, and operated by compressed air. Obviously, by means of an appropriate control device (pneumatic valve) they are only controlled when they are needed.

Il sistema d'evacuazione dei rifili sminuzzati (D) di tavola 1), ha lo scopo di allontanarli con regolarità dalla platina, onde garantire al sistema un funzionamento continuo ed economicamente conveniente. Una forma costruttiva preferita, prevede l'uso di un piano inclinato che convoglia i ritagli entro una coclea, azionata in continuo tramite apposito comando, e posta nella parte inferiore della platina. The evacuation system of the shredded trimmings (D) of table 1), has the purpose of removing them regularly from the platen, in order to guarantee the system a continuous and economically convenient operation. A preferred constructive embodiment provides for the use of an inclined plane which conveys the scraps into an auger, operated continuously by means of a suitable command, and located in the lower part of the platen.

Claims

2.4) CLAIMS: 1) Platen die-cutting machine combined with sheet feeder, characterized by the removal (for example by automatic shredding) of the trimmings in the processed sheets by means of a suitably shaped punch, and their automatic removal by means of special devices. 2) Platen punching machine as per claim 1), characterized in that the special punch is made by means of additional cutting blades suitable for shredding the internal, external trimmings or both. 3) Platen punching machine as per claim 1), characterized in that the special punch comprises punches, pins, ejectors or any other tool able to completely detach the trimmings from the processed sheet. 4) Platen die-cutting machine as per claim 1), characterized by the fact that the removal of the trimmings from the machine is carried out by means of an auger (whether or not combined with devices conveying said trimmings therein) placed in the lower part of the platen. 5) Platen die-cutting machine as per claim 4), characterized by the fact that the removal of the trimmings is carried out by means of a pneumatic device, generating vacuum or air pressure, whether it works continuously or with intermittent operation. 6) Platen die-cutting machine as per claim 4), characterized by the fact that the removal of the trimmings is carried out by means of a mechanical system, operating continuously or intermittently. 7) Platen die-cutting machine as per claim 1), characterized in that the removal of the trimmings from the sheet is carried out by shaking the extractor arm of the sheet feeder device (or a part thereof). 8) Platen die-cutting machine as per claim 7), characterized in that the shaking of the extractor arm of the sheet feeder device (or of a part thereof) is carried out by means of an auxiliary cam or modification of the control cam of said arm, or other mechanical device. 9) Platen die-cutting machine as per claim 7), characterized in that the shaking of the extractor arm of the sheet feeder device (or of a part thereof) is carried out by means of a pneumatic, electric, hydraulic or electronic device. 10) Platen die-cutting machine as per claim 1), characterized in that the removal of the trimmings from the movable platen of the platen is carried out by means of compressed air blowing devices, suitably placed on the movable platen itself and controlled to act at the most appropriate moment. 11) Platen die-cutting machine as per claim 10), characterized in that the removal of the trimmings from the movable platen of the platen is carried out by means of blowing devices, operated by a fan or other pressure-generating device, and working intermittently or continuously. 12) Platen die-cutting machine as per claim 10), characterized by the fact that the removal of the trimmings from the movable platen of the platen is carried out by mechanical devices, with metal foil or other construction, whether they act due to the elasticity of the material, or controlled by a mechanism or other device. 13) Platen die-cutting machine as per claim 1), characterized in that it is not combined with any sheet feeder device, but is completely manual.