CA2122082A1 - Grinding apparatus - Google Patents

Abstract

Abstract A grinding apparatus (10), in particular for vibrating grinding of the surface of a pipe (25) or the like, exhibits a holding element (12), which is designed with at least an approximately semi-round, cylindrical opening (18), whose interior has attachment means for securing the grinding tool. A cavity (14), which forms the opening (18), is affixed to the holding element (12); and a Velcro fastener strip (16), by means of which sand paper that is also provided with a Velcro fastener, can be attached removeably, is attached as the attachment means for the grinding tool to the interior of the cavity (14). In addition, the holding element (12) is dimensioned in accordance with the grinding plate (23) of a hand grinder (20) and has on its underside a Velcro fastener strip (12'), which can be attached to the grinding plate (23). With this grinding apparatus according to the invention, workpieces, like pipes, profiles, squared timber or the like, can be ground, cleaned, polished or also roughened in a very simple and economical manner.

Figure i

Description

2122Q~2 ~in~ln~J ~pp~r~tu~

Thfl lrlVOn~lOn r~ ;/gg t~ A gxlnding PpP~ratu~, for ~inding thh ~urf~a~ o~ ~n apE~ro~lm~tely ~rlind~l or ~ sh~p~d worl~ c~
co~Dp~ y ~ ~lding 41~m~nt ~ a g~lndin~ too~, ~rhich i~
p~o~ t p~e~erabl~ a~ 6~n~ P~pe~ ~nd ca~ be ~t~ched t~
hol~1ng o~ment.
o d~te plp~, round or ~ng~l~r c~bJeat~ Wor~ P~ocoo~d, o~
exam~le to removo ~ t or ro~ldual p~nk, ~MnerAll~ ~OX hou~
lD~t~l}A~iora o~ other ~P~lic~t~ona ~i~h~x by h6~ r with ~on~ntion~l hand gr~nders, When ~ h~n~ srlnaex 1~ ~Ised~ 'ch~ ~an~
papa~ Att~ch~d to th0 bot~om ei~ ~ it~ b~ttom grin~ g pl~, whlah ~n b~ a~t vibr~ting, wh~rebY 8l~ ln~ pl~t~
~3~hl~t~ ~ ~lnt b~tom ~ur~ce ~nd, 'eh~ePor~, ~otm~ only n llh~a~ aon~a'c when p~ooo~ plpe or th~ e; nn~, thus, ~
~i~ornl txo~tm~ o~ th~ pi~ ~u~ace i~ di~Ealllt to ~ ln. In ~dltlon, it aQn h~pp~n th~t ri~i~ly l~t~lled pips~, wh~ch ~re ;~tt~he~ dlx~tly in fro~t ~ w~ ellins~, ~anno~ b~ ground ~n all ~ld~ wi'ch a band griDaa~ in ~he ~onY4t~tion~l BanE~ inc~
one ~nnot got t~ i~he ~aar pipe ~iCli With ~qld h~,nd grinder.

~n con~a~t, the obj~ct o:E the prs#~n~ ln~ tlol 1~ t:o ~r~ a grlnd~ng ~ppar~u~ acoox~l~ns t~ the abo~r~ da~abea ~la~, w~th whloh ~iPe~ ~r th~ e can ~e ground, ¢l~n~d, polishe~, or ~u~hnned in ~ very ~lnn?le and et~onomlc~l mann~, The probl~m 1~ ~olvad ~ordln~ ~o the inV~nl:lon by d~ g at th~ h~ldl~ lem~nt A~ 115t one Approxlmat~ly ~emi-r~ a, cylindri~al opan~ng o~ an o~nlns, ~rhos~ cro~ secti~n c~r~bspond~ tv ~h~ ~haPe o~ ~he ~x~plece ~n~ ~h~ nterlo~ ha~
att~=hn~n~ nn~ln~ to ~-c~r- th- gr~n~ trol.

.

2l22n~

~tith thi~ de~l~n ~ t~ g~ln~ pp~nt~l~ A~Q~d;Ln~ t~ the inv~ntlor~ th~ ~yC~Al 0~ All nb~olutely ~impl~ cons~ruc~t~n is achl~vsd., by me~ v: Whl~h~ ~or ~x~m~le, ~3.~?e~ h~pad workp~c~ n b~ quit~ ~a~ily A~d 7~ ilY s~ourl~.

Pre~e~a~ly tlle aforementloneO. ~ttachm~nt mean~ are pro~ a:
Velcxo f ~tener ~trip~, whlch are at'cach~3d. to th~ exlc~r o~ the ro~ a~rlty ~n~ by rh*~n~ o~ whi a~ I3~n~ pal?e,r, whl~h i~ nl~
provid~d wi~h a Velcro ~t~n~r, oan h~ GI~ mc~eabl~.

The q~indln~ a~p~ra'cus ~cco~d~n~ 'co ~h~ l~V~ntiOh il: ~ultabl~
~pe~ or a han~l grinde~ w;~,th a vlbratins~ tool g~in~in~
plat~, to which end the, holdin~ elem~ t exhi~ a~ta~ mQnt n ~or ~t~achirJg ren~ov~bl~ to the ~rln~ln~ plR~ kh~ ~xln~e~.

The ~n~rantion ~nd ol~h~: advan'c~ th~ ~an~e ~e e~pl~ine~ ln ~ail w:L~h re~ex~n~e to ~he d~-rlng~ in the ~ollowingO

Fi~uro 1 læ a p~ o~ vlew o~ a 9 ~ nâlny ~ aratu5, ~hich ~ehibit~ ~he inv~rltion a~d w~lah pXoc~ 3 a wo~kp~e~ ~esigne~
a~ ~ pip~ b~ rnaans o2 a han~ grln~er.

~i~ur~ a p0r$p~ctl~re vlew o$ A grinding ~pPa~tu~ ac~ording to ~he inv~3ntion o~ Figura 1.

Figure 3 1~ a fron~ view o~ rl~ti~n of a grin~ ng aPParat ~o~ proc~lng a c~llin~x~ca1 workplsce, o~ ~hl~h a ~ro~ tiOI~
is ~l~own, o~r~r ~t~ ~n1;ire c~r~slmP~r~h~.

~i~ure 4 ~ nt ~ o~ ano~h~x ~,rA~iatio~ ~f ~ ~rirlding 01 ~pA ~ U E3 Figur~ ~ is a f~o2lt vlew o~ a va~iati~n of a yrindin~ appar~tu~
wl~h ~ c-lrvetl $h~po S A~d~

:~ .
' : ' .,!
:' 2~2~2 Flgur~ 6 1~ a p~r~p~ e vi~w of a Y~iatiOll of ~ yrindlng ~p~a~ ls w1~h a hAndl6~.

Fi~ure~ 1 and 2 ~h~w ~ ~rin~ g ~p~ar~;tu~ 10, whiah ~hlbit~ ln e~s6~rlce a pl~ sh~pe~ holdin~ m~nt la ~rld a ~63mi-round cavity 14, l~rhi~h ~ t~hed to ~id holditlg el~ment. l`he )loldlng ~l~men~ attR~hed detach~ly ~o n h~nd ~xin~r 20, wher~y the r~o;iproc~tin~ lin~ar or v~ii t~l v~ tlon~l mov~m~t pro~usbd by ~h~ la~er occurs in the lon~itu~inal directlon ana/or on t:~e p~lph~y o~ 'che wo~kpi,e~e, whlah i3 ~siyned ~15 a pipo 25 and 1 t~ be proce~ d. Thl~ h~na ~rlnd~r ZV 1~ in ~tr~ J~ wn an~
1~, there~re, not o~Pl~Lned in detail in th~ ~ollowing~

Accoxding ~o 'ch~ lnvention, an a~pxoxim~tely s~mi-rc~nd ~ylln~l~EIl op~ning 18 is de~igned ~ the ~l~h~h~ped ~vl~y 14;
~ttaah~3nt pls~aH~ ~or ~urln~ ~ gri~ding t:ool ~r0 p~ovld~3d in ~aid o~nin~. Xn t.he emb~dim~nl~ ~h~t i~ p~sent~, a Velsro ~t~n~r ~ ip 16, whi~h 0x~e~ over i'c~ ~emi-rolmd ~n~er cumf~r~n~c, i~ ~f~l~ed ~ 'cha attac~mlent m~An~. Th~ grlndin0 to~l us~d a~ tho s~nd p~r 1a can be pre~ed i~ th~ ~lmpl~t mas~nor into th~ ~vity 1~ and held thexoln. F~J~ 'chl~ p~lrpose, ~he entir~ ~0~r a~3 o~ 5ili~1 ~and pa~ prr:,vid-3d ~lth ~
co~sp~ndi~ Val~rc) l~t~nar. The uppar sur~ace o~ the holding elemen~ ~Z ha~ at'cAC}~m~nt me~ns, s~hlch ar~ also ~le~igned. a~
o ~tener ~3tr~p 1~ ald ~elcro ~ast~ene~ ~tXi~7 ~llow~ t~
hol~ling el~n~en'c i~ ~o ~e a~a~h~ to t~e grlndihg plate 23 of tbe hand g~lnder ZO. Thi3 g~ dins pla~ ~3 i~ attach~d to the3 ~ultabl~ n*~loned hold~ng q~ 37~ 1;!; an~, in ~o ao~ng, 'cb~
Yel~o ~t~no~ ~tXlp 1~ d~t~hable fa~t~niny elern~nt. SZ41~ ~trip can b~ ramoved quite! alm~ om khe g~inding plat~ 23 o~ t1:ached to it. Th~ said opening 18 exten~
~arallel to 'C~a ~:~alProcatlng llnea~ o~ oxbital vib3~a~ion tnovem~nt of ~he ~rinditl~ plate ~3 o~ kh~ gr~;~d~ h~us, the Ga~rltY ~4 with a~ixed sand papo~ c~n ]~8 Pra}33ed 0~' tha P~pe 25;
and ~h~ ~x~a~ o~ pip~, ~vr ~x~mpl4~ a mel~ pipo, i~ ~roun~l .

~2Q~2 extr~ordlnnril~ ulliormly withln ~ mln.~mum R~rlo~ c~x bu~ uslng suita~la ~nd p~per tpoll~hlr~ alok~ urt4ermore, w~th a sultable nonwo~n ~brlc th~re ~st~ the po~ y of roughenlng th~ workpl~c~ ~urface.

In prinaiple, o~ n imagine, in orde~ to ~chletre di~mat~
thq openln~ 18 that ar~ of ~l~arant ~lze$, providing th~3 cavi~y 14, attached to the ~lolfl.lng element lZ, w1th ~che la~e~t po~lbl~
dl~n\at~r; and for ~ro~ n~ ~malle~ workplea~ fliam~tors o~e ~an ~magine in~rtlnq ~ubular, seml-rouil~ ins~rts, which are sha~ed -qO ~ O m~ aid aa~lt~t bu~ hihlt a ~mall~ dimen~ion, wlth ln~Qrlor ana ~xtorl~ V~laro Y'asten~r strip~ int~ the ca~iti~.
6ald ~relcro ~ast~nin~ ~t~iP~ llr~ h~ld on th~ outs~de orl the cavity or bl~l tho out~r insert ~ and 42~ the insid~ th~y s~au~a ~he ~and pa~x ~ a ~maller ln~xt, ~ thermor~, tha holding ~lom~nt ~oulc1 ~ aim~n~ioned in a~rdan~e wi~h the ~rindin~ pl~e ~?~ th~
han~ ~rlnder and es~hibl~ ~alcro ~a te~ g band~ wh~ch ~rvo a~
th~s a~tenin~ m~An~ ~nd ~nv~lop ~:h~ sarinding pl~e ~rom the ~iae.

Th~ ~emi-round, di~h-~haP~a ~avl'cr 14 o~ th0 g~indln~ ~ppar~u~
lO ~an b~ ~ttach0d deta~h~blY~ ~or e~ampl~ by n~eans o~ screw~ ~ o~
UndstaOh~b1~ ~Or ~amP1e bY ma~ 0~ r1Ve~ Or ~emente~, ~0 ~ha h~1~ing e1e5n~nt 12. HOW~Ver~ th~ 1A~t~ e th2 c~vity 14, a~
fa~ri~a~e~ PX~~ab1Y ~r~m On~ ad~ 0~ P1~5tiC, bUt in p~incipl~ th~y ~ould ~ o bo made (;>~ a~oth~r Inate~lal ~ aluminum, 8teel Rt:~. ) . Tn a~ltion, tw~ or more caYlt~e~, whicll ar~
~rr~bd preforAb1y parallel ~o o~Aoh o~he~ exhib~t the f;am~
o~ dl~erent diame~e~, aould h~ assigned to a holding elem~n~.
I~ the ar~ang~rnenS ~a~ordiLn0 ~o Fi~ur~ 3, the ~ar~d p~per 45 il3 l~iA ~round a crlllldriaal workPi~ce ~1 and ~t~n~d det~çllably ~round ~chs workple~e 41 by ~ barld 40 enve~opi~ ~h~ nd ~al?er 45. Thi~ ban~ 45 18 pxovid~d in ~rn~lly ~nd exte~l~all~ with a Velcxo ~ n~r ~;k~ip, by mean~ of whLch ~ txlF~ ~ecur~ the san~ ~a~r 45 on th~ in~ide; A~d, ~ir~t of ~11, on the out~ide it ~122Q82 aan b~ a~ in th~ nlng ~B ~ the h~l~lng ~l~m~n~c 12 and ~e~nclly it ~or~ a e~lf ~ttachment. T~ ~roe~ the w~rkpleoe 41, th~ ~antl pup6~ 45 i~ ~ix~k lAi~ p~afe~a~lY apprb~lm~te~
~ouJl~. thl~ workplaa~3 with th~ ~bxaeive gxain on the ln~i~e; and then the l~nd 40 ~ attache~ d~tachabl~ by ov~lappis~ it~ tW~
and~. ~hen the ho~ding ~lemellt lZ ~a~ 3 Rre~3d l~rith ~ts ~m~-ro~ op~ningB ~ agai~F~t the bAnd 9~, ~trhe~e~ the vihrl~tln~
~rin~ln~ p1At~ of th~ han~ grinder 1B p~ ea ~aitl~t th~3 V~lcro ~a~tener ~tXi~ ~2 ' ~ ~nd ~hu~ the workpi~ca ~ gro~d or ~olish~â ov~ its ~llt~e cire~ r~n~ in l)De 1~10~king Eltep~
wh~reby ~h~ ~ana ~lnder ~a~rl~s out, on the ~ne h~nd, ~h~
~e~ipr~ ing l~sd motior~ hign 3:~te; ana, on th~ othex harld, it i3 guided b$~ ha~d ~lor~ th~ workpi~e pref er~bly al~ wlth a recipX~c~ting 3~71v~1 motlon, whioh m~,~ or m~ no'c ~o SLlp~o~o~
on ~al~ r~oipro~t~ng Tnotion. q'b~, abo~ v~ll p~p~, whloh 4~xto~ld ~long a wall and wh~3e rea~ ~ide can be poorl~ a~s~ed~
~an bo qround on a~l side~.
Fî~ 4 ~nd 5 ~pi~ two embodltn~nts of ~rinain~ Upp~ ltUf~
~13 or 50, Whi~h ea~hibit hi~Yeht ~ha~0~ an~ h oi~ WhiCh exhlbl~s one holding ~lern~nt 49, 5~ roviâ~d wlth a Vel~rO
~AIsten~ t~lp ~ 521 r ~n~ ~ne ~avl~7r 4~, 54, formln~ ~n openln~ 4~ 4 ' . l'he ~an~ paper ln ~urn can ~e al~mped in~o ~h~
r~p~ctl~a apohir~g 4~ ', 54 ' b~ ns ~f ~ Velcro ~a ten~x 46 , 5~ , ~ix~A to ~aid oporlin~.
Th~ gl:irJdl~ apparAt~ 43, who~e ~ro~ 8~C;!t~VII i~!: de':igh6~d ~B ~4 ~,ght Rn~le ~n~ whi~h 1~: ~ho~ in ~gu~e 4, i~ ~Rp~ci~llr ~uiltab~ ~or grlnaln~ ~ectangular ~lo~kPieces h~rln~ xounde~
~o~ner~. ~n~ther ad~an~a~ o~ ~hi~ ~r~ ins apparatu~ 43 ~i~B
in ~n~ ~act 'ch~'c the ~diU~ 47 ' form~d by ~he 6a~ paper 47, whlch c~n h~ ln~e;rte~ in~o th~ ~snins~ an be varied an~
A~ A]?t~ he a~tual ~uundn~ f th~ ~orkPl~

The ~rlndin~ a~p~rat~ 50 ~c~ln~ to Figu~e ~ lo ~peclally 2 12~0~

~uit~blo ~ a toc~l for proce~ing woo~ ~or ~e pllrpo~o hf pr~as~6in~ ~ woxkp~o that 1~ ~haped Jco m~t:Gh tlle ~-p~nln~ 5~1 ' .
Natu~ally o~hex con~ou~e or oxnam~ntal ~hap~ than tho~a th~t a~e ~hown ~an be provided in th~ c~it~ !;4.

r~ 6 ~now~ a ~rinding az~Par~kun 30 tl~at exhibit~ only os~
ca-rlty 34 as~d a holdih~ nt 32 ~ whi~lh is ~ d ~ a handlo and 1~ cc~nn~cted to ~ rlty, V~h~wl~, tne o~lt~r 34 el1~o has ~n app~o~eima~elr ~mi-round, ayl~n~ric~l openln~ 35; and Velcro $a3te~Aer ~rip 36, whioh serv~3 a~ ~h~ at~at;hm~at me~n~
for th~ ~and P~pes~ lxsd lrl ~aid ~avity. With ~chi~ y3;i-ldin~
ap~ratu~ 30 a ~ylindr~al w~kpi~co c~n b~ P~ d, cl0an0d or ~ro~n~ ~y h~nd. ~'h~ h~ eloment 32 ~ h~ aavl~y ~4 with the op~ning ~5 e~ al~o be mRd.e, ~n p~ iPle, R~ on~3 pi~ce; or a ~p~rat~ hand~e cuuld be ~rovid~ whic~h a holdi~g element, ~q shown, ~or ~Ample, in Figure q o~ ~igure 5, could b~ ~tt~ch~.
5'h0 iJIY~rltiOt~ 1~ not ~:~hQusted, of cour~, ln ~he ex~ ned 0mb~ n~ hu~, ~vr oxample, ~h~ c~v11:~ coula be ~rovld~d ln gll~h ~ m~ner th~t i~ lnt~ior ~ ~e~ign~d dir~3atly a~ th~ tool, ~or e~mple I by ~o~lny 1~ w~th an ~br~siv~ . Al60 th~ prcividea a~achment me~n~ do not h~ve to be ex~lu~i.Yelr velcrcl ~A~ er~.
~el~-A~he~ve 'C~8 or the lik~ woul~ also be concelvabl0. Thero e~;i t h~ rinder~ that are n~uipp~d ~ h a ~lelcro f~stene~
~t~' p pr4~vlded on the bottom ~id~ of th~ grindln~ plate and, ~che~ef ore, ~ ~in~ing app~ u~ acaoraing to th~ rentir~ll can l;
~uit~ a'c'caahed 'co ~t. ~he a:EPremen~l~ned Valcro ~ eL8 ~re tlno~e th~t aro commerciallY aY~ilabla and u~u~lr ~xhibit, on the one han~, strip~ ~ro~rid~d w~h a pl~lralit~r o~ loop~hape~
thr~s ar~d, on ~h~ other h~d, exh~bit mu~hroom-EIhaPed t~r hook-~h~ped ~hre~d~ o$ ~:rip o~ non-wovan ~bri~s that m~sh wi'ch d ~t~ipE~ .

Claims (10)

1. Grinding apparatus, for grinding the surface of an approximately cylindrical or a shaped workpiece, comprising a holding element and a grinding tool, which is provided preferably as sand paper and can be attached to said holding element, wherein at least one approximately semi-round, cylindrical opening (18, 48', 54') or an opening, whose cross section corresponds to the shape of the workpiece and whose interior has attachment means to secure the grinding tool, is designed at the holding element (12, 49, 52).

2. Grinding apparatus as claimed in claim 1, wherein there is a holding element (12, 49, 52) and one or several cavities (14, 48, 54), which form the opening (18, 48' 54') and are attached to said holding element, and Velcro fastener strips (16, 46, 55), affixed as attachment means to the internal ends or to the entire interior of the cavity (14, 48, 54), and by means of which the sand paper, whose rear side is also provided with a Velcro fastener, can be attached removeably.

3. Grinding apparatus as claimed in claim 1, wherein the holding element (12, 49, 52) exhibits attachment means for affixing removeably to a vibrating hand grinder (20), whereby the latter produces the reciprocating linear or orbital vibrational movement.

4. Grinding apparatus as claimed in claim 3, wherein the holding element (12) is dimensioned in accordance with the grinding plate (23) of the hand grinder (20) and exhibits a Velcro fastener strip (12'), which serves as the attachment means and is attached to the grinding plate (23).

5. Grinding apparatus as claimed in claim 1, wherein the sand paper (45) is laid around a cylindrical, oval, rectangular or other shaped workpiece (41) and fastened detachably to said workpiece; and the holding element (12) with a cavity (14) forming a semi-round opening (18) is attached at the circumference of the sand paper; and thus the workpiece (41) can be ground, polished, cleaned or roughened over its entire circumference in one working step.

6. Grinding apparatus as claimed in claim 5, wherein the sand paper (45) is fastened detachably around the workpiece (41) by a band (40) enveloping said sand paper, whereby the band (40) forms internally and externally an interacting Velcro fastener, by means of which said band secures the sand paper (45) on the inside; and, first of all, on the outside it can be affixed in the opening (18) of the holding element (12) and secondly it forms a self-attachment by overlapping its two ends.

7. Grinding apparatus as claimed in claim 1, wherein there is a grinding apparatus (43), which exhibits a cavity (48), whose cross section is angular and in whose opening (48) sand paper (47) can be inserted, whereby the radius (47') formed by said sand paper, can be varied and adapted exactly to the actual roundness of the workpiece.

8. Grinding apparatus as claimed in claim 1, wherein two or more openings (18), which stretch in the direction of movement of the grinding feed, are assigned to the holding element (12).

9. Grinding apparatus as claimed in claim 1, wherein for processing smaller workpiece diameters, tubular, semi-round inserts, which can be inserted into the cavity and are shaped so as to match said cavity, are provided with interior and exterior Velcro fastener strips that are held on the outside on the cavity or on the outer insert; and on the inside they secure the sand paper or a smaller insert.

10. Grinding apparatus as claimed in claim 1, wherein the holding element (32) is designed as a handle for manual grinding, cleaning or polishing of pipes or rods that are provided as workpieces or can be attached to a handle.