ITMI940768U1 - DEVICE SUITABLE TO HIGHLIGHT THE ROTARY STATE OF A PRESSURE ROLLER, IN PARTICULAR OF A GROUP OF STAPLING MACHINES - Google Patents
DEVICE SUITABLE TO HIGHLIGHT THE ROTARY STATE OF A PRESSURE ROLLER, IN PARTICULAR OF A GROUP OF STAPLING MACHINES Download PDFInfo
- Publication number
- ITMI940768U1 ITMI940768U1 ITMI940768U ITMI940768U1 IT MI940768 U1 ITMI940768 U1 IT MI940768U1 IT MI940768 U ITMI940768 U IT MI940768U IT MI940768 U1 ITMI940768 U1 IT MI940768U1
- Authority
- IT
- Italy
- Prior art keywords
- layer
- roller
- pressure roller
- rubber
- rotary state
- Prior art date
Links
- 239000007779 soft material Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N7/00—Shells for rollers of printing machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/08—Pressure rolls
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0233—Soft rolls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P1/00—Safety devices independent of the control and operation of any machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2207/00—Location or type of the layers in shells for rollers of printing machines
- B41N2207/02—Top layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2207/00—Location or type of the layers in shells for rollers of printing machines
- B41N2207/14—Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Photographic Developing Apparatuses (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
Descrizione di un modello di utilità Description of a utility model
Forma oggetto del presente trovato un dispositivo secondo il preambolo della rivendicazione principale . The present invention relates to a device according to the preamble of the main claim.
Come è noto, nelle macchine per cartotecnica, per la stampa, per l'accoppiamento di films per imballaggio, per l'estrusione di films plastici, per la ribobinatura ed il taglio, il gruppo di pinzatura (a volte denominato anche gruppo di traino, gruppo stampante, gruppo di accoppiamento) è costituito da un rullo motore in materiale metallico contro il quale è mantenuto premuto un rullo pressore comprendente un albero su cui è disposto un elemento cilindrico rivestito superficialmente di uno strato in materiale morbido, tipicamente la gomma. Tale rullo pressore (che definiremo anche semplicemente rullo gommato) gira solidalmente a quello metallico ed ha lo scopo, grazie alla cooperazione con quest'ultimo, di trascinare e permettere l'avanzamento del film sul quale viene effettuata la lavorazione. As is known, in the machines for paper converting, for printing, for the coupling of films for packaging, for the extrusion of plastic films, for the rewinding and cutting, the pinching unit (sometimes also called pulling unit, printing unit, coupling unit) consists of a motor roller made of metal material against which a pressure roller is kept pressed, comprising a shaft on which a cylindrical element is disposed, coated on the surface with a layer of soft material, typically rubber. This pressure roller (which we will also define simply as rubberized roller) rotates integrally with the metal one and has the purpose, thanks to the cooperation with the latter, to drag and allow the advancement of the film on which the processing is carried out.
La pressione che si esercita tra i due rulli può raggiungere valori elevati tali da costituire rischio di grave infortunio per gli operatori. Tale rischio è reso ancor più reale dal fatto che lo strato di rotazione dei rulli, sia alle basse che alle alte velocità, non è facilmente rilevabile a causa dell'uniformità di colore dei rulli in gomma o gommati (generalmente di color nero). The pressure exerted between the two rollers can reach high values such as to constitute a risk of serious injury for the operators. This risk is made even more real by the fact that the rotation layer of the rollers, both at low and high speeds, is not easily detectable due to the color uniformity of the rubber or rubberized rollers (generally black).
Al fine di proteggere l'operatore, alcune macchine sono provviste di ripari e dispositivi di sicurezza per arrestare la macchina in caso di emergenza; tuttavia tali sicurezze vengono rimosse durante le fasi di allestimento della macchina, operazione che costituisce un momento critico per l'operatore che si trova in stretto contatto con il gruppo in lenta rotazione: sono numerosi infatti i casi di incidenti in tali fasi che hanno comportato lesioni gravi agli operatori. In order to protect the operator, some machines are equipped with guards and safety devices to stop the machine in an emergency; however, these safety devices are removed during the machine set-up phases, an operation that constitutes a critical moment for the operator who is in close contact with the slowly rotating unit: there are in fact numerous cases of accidents in these phases that have resulted in injuries serious to operators.
Scopo del presente trovato è quello di offrire un dispositivo che associato ad almeno uno dei rulli del gruppo di punzatura, in particolare a quello gommato, consenta di rendere facilmente visibile e rilevabile la rotazione dei rulli suddetti: The purpose of the present invention is to offer a device which, associated with at least one of the rollers of the punching unit, in particular with the rubberized one, allows the rotation of the aforementioned rollers to be easily visible and detectable:
Un altro scopo è quello di offrire un dispositivo di semplice realizzazione, ma di notevole efficacia ottica. Another object is to offer a device which is simple to manufacture but of considerable optical efficacy.
Un ulteriore scopo è quello di offrire un dispositivo che sia ottenibile con costi contenuti e che non incida in alcun modo sulla funzionalità del rullo gommato e quindi sul rendimento del gruppo di pinzatura. A further object is to offer a device which can be obtained with low costs and which does not in any way affect the functionality of the rubber-coated roller and therefore the performance of the pinch assembly.
Questi ed altri scopi che risulteranno evidenti all’esperto del ramo vengono raggiunti da un dispositivo secondo le rivendicazioni annesse. These and other purposes which will be evident to those skilled in the art are achieved by a device according to the attached claims.
Per una maggior comprensione del presente trovato si allega a titolo puramente indicativo, ma non limitativo, il seguente disegno, in cui: For a better understanding of the present invention, the following drawing is attached for purely indicative but not limitative purposes, in which:
la figura 1 rappresenta un rullo gommato provvisto di un dispositivo secondo il trovato; la figura 2 rappresenta un diverso esempio di realizzazione del trovato. Figure 1 is a view of a rubber-coated roller provided with a device according to the invention; Figure 2 represents a different example of embodiment of the invention.
Con riferimento alle citate figure, un rullo gommato è indicato genericamente con 1 e comprende un albero 2, un organo cilindrico 3 rivestito superficialmente da uno strato 4 in materiale morbido, generalmente gomma. Il colore di tale strato gommoso è generalmente di colore nero. With reference to the aforementioned figures, a rubber-coated roller is generally indicated with 1 and comprises a shaft 2, a cylindrical member 3 coated on the surface with a layer 4 of soft material, generally rubber. The color of this rubbery layer is generally black.
Secondo il trovato, il rullo gommato presenta, entro lo strato 4, un corpo elicoidale 5 avente un colore contrastante col colore dello strato gommoso 4. Ad esempio, se quest'ultimo è nero, il corpo 5 ha colorazione gialla. According to the invention, the rubber-coated roller has, within the layer 4, a helical body 5 having a color contrasting with the color of the rubbery layer 4. For example, if the latter is black, the body 5 has a yellow color.
Il corpo elicoidale 5 è posto in una sede 7 ricavata nello strato 4 in modo da non modificare lo spessore di tale strato. Tale corpo ha, preferibilmente, larghezza compresa tra 1 e 3 cm, in funzione del diametro D e della larghezza L del rullo; tale corpo è in materiale equivalente a quello dello strato 4 (ad esempio è in gomma) e presenta le stesse caratteristiche fisiche del materiale di quest'ultimo (ovvero la stessa levigatezza, durezza, ecc.). The helical body 5 is placed in a seat 7 obtained in the layer 4 so as not to modify the thickness of this layer. This body preferably has a width of between 1 and 3 cm, depending on the diameter D and the width L of the roller; this body is made of a material equivalent to that of layer 4 (for example it is made of rubber) and has the same physical characteristics as the material of the latter (ie the same smoothness, hardness, etc.).
Il corpo elicoidale 5 può descrivere una sola elica completa sul rullo (come in figura 1) oppure due o più eliche (come in figura 2); la sua inclinazione o passo, inoltre, dipende dal diametro D e dalla larghezza L del rullo. The helical body 5 can describe a single complete helix on the roller (as in figure 1) or two or more helices (as in figure 2); moreover, its inclination or pitch depends on the diameter D and the width L of the roller.
Grazie al trovato, durante la rotazione del rullo 1 l'effetto visivo del corpo elicoidale 5 è rilevante rappresentandosi sulla superficie del rullo 1 un'elica continuamente svolgentesi. Tale effetto è notevolmente visibile e permette di riconoscere anche a distanza la rotazione del rullo pressore e quindi lo stato di funzionamento del gruppo di pinzatura di cui esso fa parte. Thanks to the invention, during the rotation of the roller 1 the visual effect of the helical body 5 is significant since a continuously unwinding helix is represented on the surface of the roller 1. This effect is noticeably visible and allows the rotation of the pressure roller to be recognized even from a distance and therefore the operating status of the clamping unit to which it belongs.
Sono state descritte due varianti del trovato. Altre ancora sono possibili (come ad esempio quella ove sullo strato 4 è presente un fregio ondulato anulare disposto in corrispondenza di una o più zone anulari del rullo 1); tuttavia tali altre varianti sono da considerarsi ricadere nell 'ambito del presente trovato. Two variants of the invention have been described. Still others are possible (such as for example the one where on the layer 4 there is an annular corrugated frieze arranged in correspondence with one or more annular areas of the roller 1); however, these other variants are to be considered as falling within the scope of the present invention.
Claims (5)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI940768 IT234233Y1 (en) | 1994-11-21 | 1994-11-21 | DEVICE SUITABLE TO HIGHLIGHT THE ROTARY STATE OF A PRESSURE ROLLER, IN PARTICULAR OF A GROUP OF STAPLING MACHINES |
DE29518877U DE29518877U1 (en) | 1994-11-21 | 1995-11-15 | Device for determining the state of rotation of a pressure roller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI940768 IT234233Y1 (en) | 1994-11-21 | 1994-11-21 | DEVICE SUITABLE TO HIGHLIGHT THE ROTARY STATE OF A PRESSURE ROLLER, IN PARTICULAR OF A GROUP OF STAPLING MACHINES |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI940768V0 ITMI940768V0 (en) | 1994-11-21 |
ITMI940768U1 true ITMI940768U1 (en) | 1996-05-21 |
IT234233Y1 IT234233Y1 (en) | 2000-02-23 |
Family
ID=11368683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI940768 IT234233Y1 (en) | 1994-11-21 | 1994-11-21 | DEVICE SUITABLE TO HIGHLIGHT THE ROTARY STATE OF A PRESSURE ROLLER, IN PARTICULAR OF A GROUP OF STAPLING MACHINES |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE29518877U1 (en) |
IT (1) | IT234233Y1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5907998A (en) | 1995-12-29 | 1999-06-01 | Howard W. Demoore | Anti-static, anti-smearing pre-stretched and pressed flat, precision-cut striped flexible coverings for transfer cylinders |
WO2005031207A1 (en) * | 2003-08-28 | 2005-04-07 | Rankin David Daniel Sr | Rotatable cutting tool with colored visual warning |
-
1994
- 1994-11-21 IT ITMI940768 patent/IT234233Y1/en active IP Right Grant
-
1995
- 1995-11-15 DE DE29518877U patent/DE29518877U1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ITMI940768V0 (en) | 1994-11-21 |
DE29518877U1 (en) | 1996-01-18 |
IT234233Y1 (en) | 2000-02-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1108042A (en) | Pressure roll and method for jacketing steel pipes with thermoplastic strip | |
US3433429A (en) | Film winding apparatus | |
JPH05125687A (en) | Press cover | |
US3727856A (en) | Torque control method and apparatus | |
US5172871A (en) | Apparatus for guiding a web of material across a driven drum | |
EP0222621B1 (en) | A roller for stretching or imparting shrinkage to sheeting | |
ITMI940768U1 (en) | DEVICE SUITABLE TO HIGHLIGHT THE ROTARY STATE OF A PRESSURE ROLLER, IN PARTICULAR OF A GROUP OF STAPLING MACHINES | |
US4409777A (en) | Web threading apparatus | |
US4477036A (en) | Method of winding strip material and lining strip | |
US4905455A (en) | Stretch wrapping | |
EP1209083A3 (en) | Method and device for manufacturing wrapped packages and bobine | |
KR880006110A (en) | Continuous strip winding device of elastic medium pressure material | |
US5518201A (en) | Method and apparatus for preventing air entrapment in a rolled web | |
EP0194948A1 (en) | Load-absorbing device for a guiding idler of an overhead conveyor | |
CN211998296U (en) | Wire arranging device of wire winding and unwinding machine | |
US3901479A (en) | Traction type hoist | |
JPS6245855Y2 (en) | ||
EP0458139A3 (en) | Die for the extrusion of a cable guidance device | |
JPS6348623Y2 (en) | ||
JPH0520945Y2 (en) | ||
KR20030056195A (en) | Belt Jointless Winding Apparatus of Green Tire | |
KR840007836A (en) | Heat exchanger roll manufacturing method and device | |
JPH0138118Y2 (en) | ||
JPS5890961A (en) | Driving device for beltlike body of sheet material in rotary printing-press | |
JP2988642B2 (en) | Bag making, filling and packaging equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted |