DK173094B1

DK173094B1 - Polishing disk with flexible sanding blades, especially for edge polishing and profile polishing

Info

Publication number: DK173094B1
Application number: DK55094A
Authority: DK
Inventors: Poul Erik Jespersen
Original assignee: Poul Erik Jespersen
Priority date: 1993-05-17
Filing date: 1994-05-16
Publication date: 2000-01-10
Also published as: DK55094A

Description

DK 173094 B1 lDK 173094 B1 l

Opfindelsen angår en pudseskive med fleksible slibelameller, især til kantpudsning og profilpudsning af profilerede møbelemner, rammeprofiler og lignende emner af træ, hvor pudseskivens radiært rettede slibelameller under skivens rotation overstryger emnet tangerende, og under virkning af centrifugalkraften, lamellernes egenstivhed og 5 eventuelle støttebørster monteret sammen med lamellerne frembringer det for bearbejdningen nødvendige slibetryk, hvorhos slibelamelleme er indfæstet i et nav, som i hovedsagen har form som en cirkulær skive forsynet med et antal radiære boringer eller lignende udsparinger.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a plasterboard with flexible abrasive lamellae, in particular for edge plastering and profile plastering of profiled furniture items, frame profiles and similar items of wood wherein with the slats produces the grinding pressures necessary for machining, wherein the grinding slats are fixed in a hub which is generally in the form of a circular disc provided with a number of radial bores or similar recesses.

10 Pudsning -hvilket i denne forbindelse især vil sige finish-slibning og lak-mellemslibning- af træ foretages for opnåelse af den bedst mulige overfladekvalitet. Pudsning af profilerede emner og andre formkomplekse emner stiller helt specielle krav til den anvendte pudseteknik, idet pudseværktøjeme nødvendigvis må være fleksible og selvtilpassende for at sikre en ensartet og ligelig bearbejdning af overfladen i 15 alle detaljer (fordybninger, fremspring, etc).10 Brushing - which in this connection in particular means finish-grinding and varnish-intermediate grinding - of wood is done to obtain the best possible surface quality. The polishing of profiled workpieces and other form-complex workpieces makes very special demands on the cleaning technique used, since the cleaning tools must necessarily be flexible and self-adjusting to ensure uniform and even machining of the surface in all details (recesses, projections, etc).

Man har forsøgt at løse problemet på flere forskellige måder. Blandt andet findes forskellige former for lamel-slibehoveder, hvor brede lameller af slibelærred kan trækkes frem fra et centralt nav efterhånden som lamellerne slides. Navet er samtidig forsynet 20 med støttebørster indsat mellem lamellerne. Et andet kendt pudsesystem er baseret på opslidsede slibelameller i skivefonn, der er indspændt mellem afstandsskiver på en fælles aksel (FLADDER-systemet). Fælles for de kendte pudsesystemer er imidlertid, at pudsningen enten er utilstrækkelig på grund af manglende slibetryk og for bløde lameller (FLADDER-systemet), eller at slibehovedet ikke i tilstrækkelig grad evner at 25 tilpasse sig den profilerede overflade på grund af ufleksible, stive lameller.Several attempts have been made to solve the problem. Among other things, there are various types of lamella grinding heads, where wide slats of grinding canvas can be pulled out from a central hub as the slats wear. At the same time, the hub is provided with support brushes inserted between the slats. Another known brushing system is based on slotted abrasive slats in disc molds, which are sandwiched between spacers on a common shaft (the FLADDER system). Common to the known brushing systems, however, is that the grinding is either insufficient due to lack of abrasive pressure and soft slats (the FLADDER system) or that the grinding head is not sufficiently able to adapt to the profiled surface due to inflexible, rigid slats .

Specielle emner -her tænkes især på enkeltkrumme møbelemner af formspændt træstiller særlige krav til pudseværktøjet på grund af de snævre krumninger og bøjninger, disse emner ofte er formet med. I disse tilfælde skal pudseværktøjet (pudseskiveme) 30 have minimal diameter. Dette krav sammenholdt med ønsket om en rimelig lang standtid for slibelamelleme opfyldes ikke af de hidtil kendte og på markedet værende pudseværktøjer.Special items - this is especially the case for single-curved furniture items made of strained wood, which makes special demands on the plaster tool due to the narrow curves and bends these items are often shaped with. In these cases, the plaster tool (plaster discs) 30 must have a minimum diameter. This requirement in conjunction with the desire for a reasonably long life of the abrasive blades is not fulfilled by the previously known and market cleaning tools.

2 DK 173094 B12 DK 173094 B1

Til grund for den foreliggende opfindelse ligger ønsket om at tilvejebringe en forbedret type af den kendte lamelpudseskive, som ikke er behæftet med de ovennævnte mangler og ulemper. Den nye pudseskive skal nærmere bestemt kunne fremstilles i den fornødne lille diameter, have en rimelig lang standtid og fremtræde med passende S fleksible slibelameller.The purpose of the present invention lies in the desire to provide an improved type of the prior art lamella disc, which does not suffer from the aforementioned shortcomings and disadvantages. Specifically, the new grinding wheel must be able to be manufactured to the required small diameter, have a reasonably long life and appear with suitable S flexible abrasive slats.

Det nye ved opfindelsen består i, at der i hver af boringerne er indfæstet en vifte af slibelameller, som alle vender med den virksomme side fremefter i skivens rotations-retning, og bag hvilke der endvidere er indfæstet et børstebundt, som dels tjener til 10 støtte for lamellerne, dels til udfyldning af boringen sammen med lamellerne, og at lamellerne er anbragt i delvis overlappende position i boringen.The new feature of the invention is that in each of the bores a variety of abrasive lamellae are fitted, all of which face the effective side forward in the direction of rotation of the disc, and behind which is also attached a brush bundle, which partly serves to support for the slats, partly for filling the bore together with the slats, and that the slats are placed in partially overlapping position in the bore.

Pudseskiven ifølge opfindelsen udmærker sig især ved uden større teknisk vanskelighed at kunne fremstilles med vilkårlig lille diameter. Grunden hertil er den specielle 15 udformning af navskiven og den måde, hvorpå slibelamelleme forankres i navet. Placeringen af pudselamelleme i vifteform og med indbyrdes overlapning sikrer optimal fleksibilitet og levetid af disse. Børstebundteme kan ved passende valg af børstedimension, børsteantal og -stivhed give lamellerne netop den støtte og stivhed, som er optimal for en given pudseopgave.The cleaning disc according to the invention is particularly distinguished by being able to be manufactured with any small technical difficulty of any small diameter. The reason for this is the special design of the hub washer and the way in which the abrasive blades are anchored in the hub. The placement of the fan blades in fan shape and with overlapping ensures optimal flexibility and longevity of these. The brush bundles can, by appropriate choice of brush dimension, brush number and stiffness, provide the slats with just the support and stiffness that is optimal for a given brushing task.

2020

Opfindelsen skal forklares nærmere i forbindelse med tegningen, hvor fig. 1 viser en pudseskive ifølge opfindelsen i sidebillede, delvis i snit, fig. 2 samme i tværsnit langs linien A-A i fig. 1, fig. 3 en tilsvarende pudseskive med to rækker slibelameller/børster, vist i tværsnit, 25 fig. 4 en pudseskive med tre rækker slibelameller/børster, fig. 5 et snit langs linien B-B i fig. 1, der i forstørrelse viser lamel- og børstemontagen i en enkelt navboring i pudseskivenavet, fig. 6 samme vist i snit langs linien C-C i fig. 1 fig. 7 navboringer i en sprøjtestøbt udgave af navet, 30 fig. 8 en af pudseskiver sammensat formpudsetromle beregnet til pudsning af bordplade-kantprofiler, vist i snit på langs, og 3 DK 173094 B1 fig. 9 en tilsvarende formpudsetromle beregnet til pudsning af karmprofiler, vist i sidebillede.The invention will be explained in more detail in connection with the drawing, in which fig. 1 is a side view, partly in section, of a brush disc according to the invention; FIG. 2 is the same in cross-section along the line A-A in FIG. 1, FIG. 3 shows a similar brush disc with two rows of abrasive lamellae / brushes, shown in cross section, FIG. 4 is a brush disc with three rows of abrasive lamellae / brushes; FIG. 5 is a section along line B-B of FIG. 1, which is an enlarged view of the lamella and brush assembly in a single hub bore in the brush disc hub; FIG. 6 is a sectional view taken along the line C-C in FIG. 1 FIG. 7 hub bores in an injection molded version of the hub; FIG. 8 shows a molding drum composite drum designed for polishing tabletop edge profiles, shown in longitudinal section, and 3 FIG. 9 shows a similar molding drum intended for polishing frame profiles, shown in side view.

Den i fig. 1 og 2 viste pudseskive er sammensat af en cirkulær navskive 1, et antal 5 slibelameller 2 og støttebørster 3. Slibelamelleme og børsterne er bundtvis indfæstet i radiære boringer 4 i navskiven 1, og er fastholdt i boringerne ved klæbning eller ter-mosvejsning. Alternativt kan de også fastholdes ved mekanisk forankring eller en anden egnet befæstigelsesteknik. I hver boring er indsat ialt fire lameller 2, som vender med deres virksomme slibesider 2a fremefter i pudseskivens rotationsretning. Denne 10 er på tegningen angivet med en pil 5. Lamellerne er anbragt i spænd op mod indersiden i boringen 4 under virkning af børsternes 3 klemmende/udfyldende funktion bag lamellerne i boringen, jvf fig. 5. Udenfor boringen breder lamellerne sig delvis ud i sideretningen (se fig. 2), dog således, at lamellerne fortsat vender med de aktive slibesider fremad i rotationsretningen. Lamellerne befinder sig i delvis overlappende stil-15 ling. Børsterne 3, som fortrinsvis er lidt kortere en lamellerne 2, tjener som støtte for lamellerne, idet børsterne nærmere bestemt skal give lamellerne det for pudsningen nødvendige slibetryk.The FIG. The abrasive disc shown in Figures 1 and 2 is composed of a circular hub disc 1, a plurality of 5 abrasive blades 2 and support brushes 3. The abrasive blades and brushes are bundled into radial bores 4 in the hub disc 1 and are retained in the bores by adhesive or surface welding. Alternatively, they may also be retained by mechanical anchoring or other suitable fastening technique. In each bore a total of four slats 2 are inserted, which face their effective abrasive sides 2a forward in the direction of rotation of the brush disc. This 10 is indicated in the drawing by an arrow 5. The slats are arranged in tension against the inside of the bore 4 under the effect of the squeezing / filling function of the brushes 3 behind the slats in the bore, cf. 5. Outside of the bore, the slats extend partially in the lateral direction (see Fig. 2), however, so that the slats continue to face the active grinding sides forward in the direction of rotation. The slats are in partially overlapping position. The brushes 3, which are preferably slightly shorter than the slats 2, serve as support for the slats, the brushes having to give the slats the grinding pressure needed for the grinding.

Navskiven 1 kan have boringerne 4 -og dermed lamellerne- anbragt i én eller flere 20 parallelle rækker ved siden af hinanden langs omkredsen, jvf fig. 3 og 4. Antallet af lameller i hver boring kan være større eller mindre end fire. Navskiven er forsynet med en central udboring la til brug ved pudseskivens opspænding på en aksel. Anvendt til modulopbyggede formpudsetromler opspændes flere pudseskiver ved siden af hinanden på samme aksel 6, jvf fig. 8 og 9. Pudseskiveme kan have forskellige 25 diametre.The hub washer 1 may have the bores 4 - and thus the slats - arranged in one or more 20 parallel rows side by side along the circumference, cf. 3 and 4. The number of slats in each bore may be greater or less than four. The hub washer is provided with a central bore 1a for use in clamping the pulley on a shaft. Used for modular molding drum rollers, several brush discs are clamped side by side on the same shaft 6, cf. 8 and 9. The discs may have a variety of 25 diameters.

Navskiven 1 er formåls^enligt fremstillet af et egnet plastformstof, eksempelvis POM eller PVC. Navskiven kan fremstilles ved spåntagende bearbejdning eller ved sprøjtestøbning. I sidstnævnte tilfælde udformes boringerne 4 som støbte udsparinger 7, ek-30 sempelvis i den form, der er vist i fig. 7.The hub washer 1 is intended to be manufactured from a suitable plastic resin, for example POM or PVC. The hub washer can be made by machining or by injection molding. In the latter case, the bores 4 are formed as molded recesses 7, for example in the form shown in FIG. 7th

Claims

1. Abrasive disc with flexible abrasive blades, in particular for edge plastering and profiling of 5 profiled furniture items, frame profiles and similar wooden items, where the radially oriented abrasive blades of the plasterboard overlap the subject tangentially and, under the action of the centrifugal force, the brackets of the lamellar with its own stiffness the slats produce the abrasive pressure necessary for machining, wherein the abrasive slats (2) are mounted in a hub (1) which is generally 10 in the form of a circular disc provided with a plurality of radial bores (4) or similar recesses, characterized in that in each of these bores is inserted a variety of abrasive lamellae, all of which face the effective side (abrasive side 2a) forward in the direction of rotation of the disc (5), and behind which is also attached a brush bundle (3) which partly serves to support the slats (2), partly for filling the bore (4) 15 together with the slats, and the slats e. is placed in a partially overlapping position in the bore.

Brush disk according to claim 1, characterized in that the number of slats (2) in each bore (4) is of the order of 3-5. 20

Abrasive disk according to claim 1, characterized in that the bores (4) are arranged in several parallel rows side by side on the same disk (1), preferably with a row number from 1 to 3 on each disk. 25

Brush disk according to claim 1, characterized in that the abrasive blades (2) are longer than the brushes (3).