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Spazzole ad anello

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Spazzole ad anello

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Sono spazzole costituite da filamenti disposti attorno ad un anello metallico interno, e pressati tra due ghiere anch’esse metalliche (vedi Figura). Ne risulta una spazzola dalla forma di disco sottile con flangiatura e foro circolare. La caratteristica principale degli anelli è la modularità. Infatti essi possono essere utilizzati singolarmente, ma più spesso vengono montati su albero uno a fianco dell’altro fino a formare una spazzola a rullo. La densità del rullo può essere modificata interponendo tra i singoli anelli opportuni distanziali. Gli anelli sono elementi semplici e molto leggeri, utili quando si necessiti di un rullo di piccolo diametro e particolarmente compatto. Va comunque rilevato che l’operazione di pressatura non consente di ottenere tolleranze meccaniche strette né un’assoluta uniformità del filamento. La precisione dimensionale dell’anello è pertanto inferiore a quella di un analogo elemento punzonato.

Le spazzole ad anello sono utilizzate per :

  • Elementi spazzolanti sottili (4-7 mm)
  • Piccoli rulli compatti
  • Rulli dove è richiesta l’intercambiabilità degli elementi spazzola

[/vc_column_text][vc_tta_accordion title_tag=”h3″ shape=”square” color=”blue” gap=”10″ c_position=”right” active_section=”0″ css_animation=”fadeIn” no_fill=”true” css=”.vc_custom_1655846468763{margin-top: 30px !important;}”][vc_tta_section title=”Dimensioni dell’anello” tab_id=”1642964972413-70722eb6-1e35ae46-74b7″][vc_row_inner][vc_column_inner width=”1/3″][vc_column_text css=”.vc_custom_1646946328777{margin-left: 8px !important;}”]Il diametro esterno degli anelli teoricamente non è limitato. Occorre però tenere conto che, avendo l’anello un nucleo metallico relativamente piccolo, filamenti molto lunghi tendono a flettersi. In pratica si può considerare che il diametro massimo sia attorno a 500 mm con filamenti molto grossi.

Il diametro minimo è funzione della dimensione D3 della ghiera, che si può rilevare dalla Tabella con riferimento alla Figura. I valori dello spessore S sono indicativi.[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_single_image image=”1368″ img_size=”300×300″ alignment=”center”][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text css=”.vc_custom_1646946354367{margin-left: 8px !important;}”]Dimensioni spazzole ad anello (mm)

D21016252830
D32433506060
S45677
D1<100<200<300<400<500
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GALLERIA

[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column offset=”vc_hidden-sm”][vc_masonry_media_grid gap=”20″ item=”390″ grid_id=”vc_gid:1655846340125-5b753b7a90752ed7b2303eb0f586fb20-7″ include=”1330,1341,1338,1342,1339″ css=”.vc_custom_1646831154572{border-radius: 15px !important;}”][vc_empty_space height=”60px”][/vc_column][/vc_row][vc_row][vc_column offset=”vc_hidden-lg vc_hidden-md vc_hidden-xs”][vc_masonry_media_grid element_width=”6″ gap=”20″ item=”390″ grid_id=”vc_gid:1655846340178-480d566a970bb577ac8d2c1adf189d99-7″ include=”1330,1338,1341,1339,1342″ css=”.vc_custom_1646831133989{border-radius: 15px !important;}”][vc_empty_space height=”60px”][/vc_column][/vc_row][/vc_section][vc_row][vc_column offset=”vc_hidden-sm vc_hidden-xs”][vc_empty_space][/vc_column][/vc_row][vc_section content_placement=”middle” parallax=”content-moving” css_animation=”fadeIn” css=”.vc_custom_1644267394219{margin-top: 0px !important;margin-right: 0px !important;margin-bottom: 0px !important;margin-left: 0px !important;padding-top: 10px !important;padding-right: 40px !important;padding-bottom: 10px !important;padding-left: 40px !important;background-color: #fbf3b8 !important;border-radius: 15px !important;}”][vc_row gap=”20″ equal_height=”yes” content_placement=”middle” css=”.vc_custom_1644267110047{margin-bottom: 0px !important;padding-bottom: 0px !important;}”][vc_column width=”2/3″ css=”.vc_custom_1644957306598{margin-bottom: 0px !important;padding-bottom: 0px !important;}” offset=”vc_hidden-xs”][vc_column_text]

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Richiedi ora la tua offerta[/vc_column_text][vc_btn title=”Compila il modulo” style=”custom” custom_background=”#e30713″ custom_text=”#ffffff” shape=”round” css=”.vc_custom_1649799288647{margin-bottom: 0px !important;padding-bottom: 0px !important;}” link=”url:https%3A%2F%2Fwww.yurimimmi.it%2Fsimoni%2Fspazzole-ad-anello%2Frichiesta-offerta%2F|target:_blank”][/vc_column][/vc_row][/vc_section][vc_section css_animation=”fadeIn” css=”.vc_custom_1644176462777{margin-top: 30px !important;margin-bottom: 60px !important;}”][vc_row][vc_column][vc_column_text]

[/vc_column_text][vc_separator css=”.vc_custom_1643578248789{margin-top: 0px !important;margin-bottom: 16px !important;padding-top: 0px !important;padding-bottom: 0px !important;}”][vc_toggle title=”Qual è il vantaggio di usare una spazzola invece di un altro oggetto deformabile?” style=”arrow” custom_font_container=”tag:h3|text_align:left|color:%23001240″ custom_google_fonts=”font_family:Nunito%3A300%2Cregular%2C700|font_style:400%20regular%3A400%3Anormal” use_custom_heading=”true”]La caratteristica peculiare della spazzola è che la superficie di lavoro è costituita da milioni di elementi singoli, che sono l’estremità dei singoli filamenti. 

Questo conferisce alla spazzola una adattabilità che nessun altro elemento, per quanto deformabile, può avere.[/vc_toggle][vc_toggle title=”Quanto deve interferire la spazzola sul pezzo da lavorare?” custom_font_container=”tag:h3|text_align:left|color:%23001240″ custom_use_theme_fonts=”yes” use_custom_heading=”true”]Dipende da vari fattori. In estrema sintesi si può dire che 2 mm è un buon compromesso. L’importante è che i filamenti della spazzola lavorino “di punta” e non sul fianco.[/vc_toggle][vc_toggle title=”Un mazzetto di filamento si può staccare dal corpo spazzola?” custom_font_container=”tag:h3|text_align:left|color:%23001240″ custom_use_theme_fonts=”yes” use_custom_heading=”true”]A seconda dei materiali usati e delle dimensioni, esiste un carico limite a trazione che un singolo mazzetto può sopportare. 

Oltre questo limite il mazzetto si stacca, quindi la spazzola va calcolata a seconda dell’utilizzo. Si può aumentare moltissimo questo limite costruendo spazzole “cucite” o “legate” a mano, dove invece che un elemento di ancoraggio singolo si mette un filo di acciaio continuo.[/vc_toggle][vc_toggle title=”Che potenza devo prevedere per motorizzare una spazzola cilindrica?” custom_font_container=”tag:h3|text_align:left|color:%23001240″ custom_use_theme_fonts=”yes” use_custom_heading=”true”]A pagina 23 del nostro catalogo si trovano i diagrammi che rispondono a questa domanda.[/vc_toggle][vc_toggle title=”È possibile che un singolo filamento si sfili dal mazzetto contaminando il prodotto?” custom_font_container=”tag:h3|text_align:left|color:%23001240″ custom_use_theme_fonts=”yes” use_custom_heading=”true”]Può succedere solo se la spazzola ha un difetto di fabbricazione, come d’altra parte ogni altro tipo di oggetto (ad es. un rullo fatto con lamelle di silicone di cui una è difettosa e si spezza).

Quando è importante che non avvenga alcuna contaminazione è opportuno utilizzare fibre sintetiche (non naturali) con diametro maggiore o uguale a 0.15 mm.[/vc_toggle][vc_toggle title=”Quale morbidezza o durezza di spazzola posso ottenere?” custom_font_container=”tag:h3|text_align:left|color:%23001240″ custom_use_theme_fonts=”yes” use_custom_heading=”true”]Praticamente si possono avere tutti i gradi di durezza, da morbidissima a durissima. Infatti la durezza è data dalla combinazione tra il diametro del filamento, la sua lunghezza libera e la densità dei mazzetti.[/vc_toggle][vc_toggle title=”È possibile avere una spazzola certificata “alimentare”?” custom_font_container=”tag:h3|text_align:left|color:%23001240″ custom_use_theme_fonts=”yes” use_custom_heading=”true”]Certamente, possiamo fornire certificazioni FDA o FOOD GRADE e rintracciabilità del filamento.[/vc_toggle][vc_toggle title=”È possibile avere una spazzola certificata ATEX?” custom_font_container=”tag:h3|text_align:left|color:%23001240″ custom_use_theme_fonts=”yes” use_custom_heading=”true”]Purtroppo no, in quanto è l’insieme macchina + spazzola a dover essere certificata ATEX, non la sola spazzola.

E’ comunque possibile fornire i materiali che il certificatore richiede, ad es. basi conduttive, filamenti conduttivi ecc…[/vc_toggle][vc_toggle title=”È possibile “rigenerare” una spazzola consumata?” custom_font_container=”tag:h3|text_align:left|color:%23001240″ custom_use_theme_fonts=”yes” use_custom_heading=”true”]In linea generale è possibile, bisogna però valutare se è economicamente conveniente, e non sempre lo è. Inoltre, nel caso di una spazzola punzonata, è sconsigliabile rigenerare la spazzola più di due volte per non ridurre la tenuta dei mazzetti.[/vc_toggle][/vc_column][/vc_row][/vc_section]