DK165495B

DK165495B - WALTZ

Info

Publication number: DK165495B
Application number: DK183190A
Authority: DK
Inventors: Morten Kristensen
Original assignee: Morten Kristensen
Priority date: 1990-07-31
Filing date: 1990-07-31
Publication date: 1992-12-07
Also published as: DK183190A; DK165495C; DK183190D0; AU8321191A; WO1992002362A1

Description

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- i -- i -

Opfindelsen angår en valse af den i krav l's indledning angivne art.The invention relates to a roller of the kind specified in the preamble of claim 1.

Sådanne valser anvendes generelt til fremstilling af hule 5 emner ud fra papir, pap, tekstilvæv, plast og lignende, idet en bane af et egnet materiale trækkes gennem en limopløsning og vikles omkring valsen, indtil et passende tykt lag er nået, måske 5-10 mm, hvorefter emballageemnet trækkes fri af valsen, og fremstillingen af næste emne kan 10 påbegyndes. Der kan på denne måde bl.a. fremstilles emballage i form af kasser eller tromler, også koniske eller med i aksial retning varierende tværsnit i det hele taget, ved anvendelse af en valse med et yderlegeme, der har kantet henholdsvis cirkulært tværsnit. Bl.a. kan 15 såkaldte fibertromler på basis af papir samt kufferter og dele til sofaer af "fiber" fremstilles ved anvendelse af sådanne valser. I det følgende omtales yderlegemet af overskuelighedsgrunde som et rør, og emnet undertiden cylindrisk.Such rollers are generally used to make hollow 5 items from paper, cardboard, textile fabric, plastics, and the like, a web of a suitable material being pulled through an adhesive solution and wrapped around the roll until a suitable thick layer is reached, perhaps 5-10 mm, after which the packing blank is pulled free from the roll and the manufacture of the next blank can be started. In this way, For example, packaging is made in the form of boxes or drums, also tapered or with axially varying cross sections overall, using a roller having an outer body having angular or circular cross sections, respectively. Among other things. For example, 15 so-called paper-based fiber drums as well as suitcases and parts for "fiber" sofas can be made using such rollers. In the following, for the sake of clarity, the outer body is referred to as a tube, and the subject is sometimes cylindrical.

2020

For at få et ensartet og stærkt emne er det vigtigt, at banen vikles ret stramt om valsen, og hermed vanskeliggøres den afsluttende fjernelse af emnet fra valsen.In order to obtain a uniform and strong workpiece, it is important that the web be wrapped fairly tightly around the roller, thereby making the final removal of the workpiece from the roller more difficult.

25 Dette problem løses ifølge den kendte teknik, som anført i NO patentskrift nr. 9332 derved, at valsens yderrør er forsynet med en klap, der kan åbnes indad, når emnet skal trækkes af. Efter åbning af klappen må man presse det udenpå omviklede emne ind i den dannede åbning for at 30 frigøre det over kanten, hvor klappen er åbnet, og herefter må man med neglene trykke, trække og skubbe emnet fri fra valsen hele vejen rundt for tilsidst at trække det helt af valsen. Denne arbejdsoperation er yderst besværlig, anstrengende og omstændelig og medfører ofte ska-35 der på emnerne, der deformeres betydeligt ved indpres-ningen i åbningen. Desuden har netop dette trin været - 2 -This problem is solved according to the prior art, as stated in NO Patent No. 9332, in that the outer tube of the roller is provided with a flap which can be opened inwardly when the workpiece is to be pulled off. After opening the flap, the exterior wrapped blank must be pressed into the formed opening to release it over the edge where the flap is opened, and then with the nails press, pull and slide the blank free all the way around to eventually pull it completely off the roller. This work operation is extremely cumbersome, strenuous and cumbersome and often causes damage to the workpieces which are significantly deformed by the compression in the opening. Furthermore, this particular step has been - 2 -

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årsag til, at hele processen trods ønsker herom ikke har kunnet automatiseres.reason that despite the wishes, the whole process could not be automated.

Disse ulemper elimineres ved anvendelse af en valse, som 5 angivet i krav 1's kendetegnende del. Om ønsket kan snitfladen, der i kravet angives navnlig at være orienteret i valsens længderetning, forløbe skråt eller være bølget, alt efter anvendelsen.These disadvantages are eliminated by using a roller as set forth in the characterizing portion of claim 1. If desired, the cut surface, which is claimed to be oriented in particular in the longitudinal direction of the roller, may be inclined or wavy, depending on the application.

10 Valsen ifølge opfindelsen anvendes som følger: Ved om vikling med f.eks. en papirbane benyttes valsen med ikke helt lukket yderrør. Ved omviklingen eller opspolingen fastholdes papirbanen alene ved en snæring. Efter afsluttet omvikling skubbes rørskallerne så tættere sammen, 15 hvorved det omviklede materiale automatisk slipper valsen hele vejen rundt langs den drejelige ydre rørskal, der dækker omkring halvdelen (180°) af yderrørets krumme overflade. Herefter kan emballageemnet trækkes fri med et snuptag. Det omviklede emne glider selv af, og spændingen 20 eller snæringen elimineres. Fuldstændig frigørelse og fjernelse af emnet er ganske let og enkel. I praksis er selv et meget tykvægget omviklet rørformet emne efter frigørelsen ved sammenskubningen til at fjerne med en enkelt finger.The roll of the invention is used as follows: For winding with e.g. a paper web uses the roller with not fully closed outer tube. When wrapping or rewinding, the paper web is only held by a cut. After winding is completed, the tube shells are then pushed closer together, whereby the wrapped material automatically releases the roller all the way around the rotatable outer tube shell, which covers about half (180 °) of the curved surface of the outer tube. After that, the packaging item can be pulled free with a snap. The wrapped work piece slides off itself and the tension 20 or string is eliminated. Complete release and removal of the item is quite easy and simple. In practice, even a very thick-walled, tubular workpiece is, after release, at the push-together to remove with a single finger.

2525

Med valsen ifølge NO patentskrift nr. 9332 er det i praksis umuligt at få et slip af materialet på tilnærmelsesvis 180° rundt langs den krumme røroverflade. Dels begrænser nemlig yderrørets godstykkelse bevægeligheden mod hinanden 30 af to rørskaller, som tænkes tilnærmelsesvis lige store, og dels vil materialet reelt, selv med en bevægelig skal, der fra omdrejningspunktet til snitfladen dækker eksempelvis 150°, kun slippe valsen langs måske 50°, da det skal presses fri over den skarpe snitflade og derved 35 bringes til at tangere den bevægelige rørskal efter frigørelse af et til et langt kortere stykke rørskal end hele den bevægelige skal svarende stykke af emnet. Det er des-With the roll according to NO Patent No. 9332, it is practically impossible to get a slip of the material at approximately 180 ° around the curved pipe surface. On the one hand, the thickness of the outer tube limits the movement towards each other of two tubular shells, which are thought to be approximately equal, and on the other hand, the material will, even with a movable shell covering from the center of rotation to the cut surface, for example, only release the roll along perhaps 50 °. it must be pressed free over the sharp cutting surface and thereby caused to tang the moving pipe shell after releasing one to a much shorter piece of pipe shell than the entire moving shell corresponding to the workpiece. It's des-

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- 3 - uden i praksis umuligt at fremstille en valse ifølge NO patentskriftet med en klap større end 90°, som kan modstå belastningen og snæringen ved spolingen.- 3 - without practically impossible to produce a roller according to the NO patent with a flap greater than 90 ° which can withstand the load and the string during the flushing.

5 I krav 2's kendetegnende del anvises en særligt fordelagtig udførelsesform for valsen ifølge opfindelsen, hvor mindst to af valsens ende- eller skotplader er delt svarende til den bevægelige ydre rørskal, nemlig nærmest diametralt, og fungerer som sæde for spyddet og åbne-/lukkestyresystemet.In the characterizing part of claim 2, a particularly advantageous embodiment of the roller according to the invention is disclosed, wherein at least two of the end or bulkhead plates of the roller are divided corresponding to the movable outer tube shell, namely almost diametrically, and act as a seat for the spear and open / close control system.

1010

Styresystemet kan udformes på mange måder, som vil være nærliggende for fagfolk. Der skal blot være et forbindelsesorgan mellem de to rørskaller, som dels har en stopfunktion svarende til den ønskede maksimale spalte mellem 15 de to rørskaller, og dels kan påvirkes til en forskydning af de to rørskalier imod eller væk fra hinanden. Styresystemet anbringes mest hensigtsmæssigt i tilknytning til ende- og skotpladerne, jvf. krav 2.The operating system can be designed in many ways that will be obvious to those skilled in the art. There simply has to be a connecting member between the two pipe shells, which partly has a stop function corresponding to the desired maximum gap between the two pipe shells, and partly can be actuated to displace the two pipe shells towards or away from each other. The control system is most conveniently placed adjacent to the end and bulkhead plates, cf. claim 2.

20 I krav 3 anvises et særligt enkelt og funktionsdygtigt styresystem omfattende to nærmest aksialt anbragte skinner, som er fastgjort til hver sin del af de delte ende- og skotplader, og en mellem disse anbragt tilsvarende skinne, idet disse skinner med passende 25 aksiale mellemrum via bevægelige forbindelsesled er forbundet på tværs. Ved bevægelsen af disse forbindelsesled vil skinnernes indbyrdes afstand ændres, og valsens yderrør åbnes eller lukkes. Mange forskellige typer forbindelsesled vil kunne anvendes af fagfolk, f.eks.In claim 3, a particularly simple and operable control system comprising two almost axially arranged rails, which are attached to each part of the split end and bulkhead plates, and a corresponding rail are arranged, these rails being provided at suitable axial intervals via movable connectors are connected transversely. As these joints move, the spacing of the rails will change and the outer tube of the roller will be opened or closed. Many different types of connectors may be used by those skilled in the art, e.g.

30 fjederled, hængselled, drejeled, kædeled og saksled.30 spring joints, hinge joints, swivel joints, chain links and scissors.

Med dette simple styresystem, hvor forbindelsesleddene navnlig er anbragt ud for skotpladerne og den ene endeplade, opnås tillige, at valsen kan fremstilles i et meget 35 tyndt materiale og alligevel have en kolossal styrke. Der er ingen skæve påvirkninger ved åbne-/lukkefunktionen, som ellers kunne give slør i systemet.With this simple control system, where the connecting joints are arranged in particular next to the bulkhead plates and one end plate, it is also obtained that the roll can be made of a very thin material and yet have a tremendous strength. There are no distorted effects on the open / close function, which could otherwise cause a blur in the system.

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Navnlig foretrækkes en udførelsesform som angivet i krav 4, hvor de to faste skinner er parallelle og fastholdes til de delte ende- eller skotplader ved hjælp af yderligere spyd, og hvor der som forbindelsesled til midter-5 skinnen anvendes to kædeled, eventuelt flere sæt pa rallelle kædeled. Dette saksesystem er eh bærende enhed, som garanterer parallelliteten i denne udførelsesform for valsen. Når de faste skinner fastholdes med spyd er hele systemet let at udskifte, f.eks. til et system med en 10 anden tolerance (spaltebredde), og med kædeled opnås en meget simpel og velfungerende indbyrdes forskydning af skinnerne. Når nemlig kædeleddenes tre fastgørelsespunkter ligger på linie, kan de ikke, selv med en stor kraftpåvirkning, forskydes i retning mod eller fra hinanden, men 15 så snart f.eks. midterpunktet forskydes en anelse fra den rette linie mellem de to andre punkter, kan konstruktionen "sakse" og skubbe skinnerne mod eller fra hinanden, svarende til lukning, hhv. åbning af valsens yderrør- .Particularly preferred is an embodiment as claimed in claim 4, wherein the two fixed rails are parallel and secured to the split end or bulkheads by additional skewers, and where two chain links, optionally several sets of links, are used as the connecting link to the center rail. rallel chain links. This scissor system is a supporting unit which guarantees the parallelism in this embodiment of the roller. When the fixed rails are retained with skewers, the whole system is easy to replace, e.g. for a system with a 10 second tolerance (gap width), and with chain link, a very simple and well-functioning mutual displacement of the rails is achieved. Namely, when the three points of attachment of the chain links are aligned, they cannot, even with a large force effect, be displaced in the direction towards or apart, but as soon as e.g. if the center point is shifted slightly from the straight line between the other two points, the construction can "scissor" and push the rails towards or apart, corresponding to closure, respectively. opening the outer tube of the roller.

20 Da valsens yderrør ved den ovenfor beskrevne fremstilling af f.eks. fibertromler under omviklingen skal være lidt åbent, mens det ved tromlens frigørelse fra valsen skal lukkes lidt sammen, er man i praksis ved denne anvendelse meget interesseret i at kunne fastholde konstant spalte-25 bredde under omviklingen. Man kan ved en let ændring af det lige beskrevne princip opnå et bedre, selvlåsende styresystem, idet man mekanisk forhindrer den midterste skinne i at kunne bevæges længere end en vis afstand til den ene side, f.eks. ved hjælp af en spærrebjælke i en 30 afstand, der under omviklingen medfører 0,1 mm's forskydning til venstre af det midterste fastgørelsespunkt i forhold til linien mellem de to andre punkter. Så sker der helt sikkert ingen ændring af spaltebredden, før midterskinnen til slut manuelt eller automatisk trækkes 35 til højre.Since the outer tube of the roller in the above-described production of e.g. fiber drums during the winding should be slightly open, while in the release of the drum from the roller should be slightly closed together, in practice, in this application, it is very interested in being able to maintain constant gap width during winding. By a slight change of the principle just described, a better self-locking control system can be obtained, by mechanically preventing the middle rail from being able to move further than a certain distance to one side, e.g. by means of a locking bar at a distance of 30, which during the winding causes 0.1 mm of displacement to the left of the middle attachment point relative to the line between the other two points. Then there is certainly no change in the gap width until the middle rail is finally manually or automatically pulled 35 to the right.

Afstanden mellem skinnerne, som er en funktion af længdenThe distance between the rails, which is a function of the length

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- 5 - af forbindelsesleddene, er fortrinsvis valgt således, at der er en vis ønsket afstand, f.eks. 2 mm, mellem de to yderrørskalier, når forbindelsesleddene er i den upåvirkede position (kædeleddene ligger på linie, eller det 5 midterste punkt en anelse forskudt, jvf. ovenfor), mens de to rørskaller nærmest ligger an mod hinanden langs snitfladen, når forbindelsesleddene er påvirkede (kædeleddene vinklede), jvf. krav 5.- 5 - of the connecting links is preferably selected such that there is some desired distance, e.g. 2 mm, between the two outer pipe shells when the connecting links are in the unaffected position (the chain links are aligned, or the middle point slightly offset, cf. above), while the two pipe shells are almost opposite to each other along the sectional surface when the connecting links are affected (the chain links angled), cf. claim 5.

10 Forskydningen af den midterste skinne, så kædeleddene ikke ligger på linie, og spalten lukkes, kan som nævnt ovenfor foretages manuelt eller automatisk, bl.a. med trykluft eller med et hydraulisk stempel, der påvirker midterskinnen.10 The displacement of the middle rail so that the chain links are not aligned and the gap is closed can, as mentioned above, be done manually or automatically, i. with compressed air or with a hydraulic piston affecting the center rail.

1515

Valsen ifølge opfindelsen kan anvendes til mange industrielle formål udover de her nævnte i forbindelse med fremstilling af hule emner, bl.a. også til fastholdelse og/eller centrering af hule emner i forbindelse med en 20 bearbejdning af disse.The roll according to the invention can be used for many industrial purposes besides those mentioned in connection with the manufacture of hollow blanks, i.a. also for retaining and / or centering hollow articles in connection with machining thereof.

Opfindelsen skal i det følgende nærmere beskrives ved hjælp af tegningen, hvor 25 fig. 1 viser et perspektivbillede af en valse ifølge opfindelsen, uden styresystem, fig. 2 et endebillede af valsen med en særlig udførelsesform for et styresystem, og 30 fig. 3 et detailbillede af skinner og forbindelsesled i styresystemet fra fig. 2, set ovenfra.BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail with reference to the accompanying drawings, in which: FIG. 1 is a perspective view of a roller according to the invention, without a control system; FIG. 2 is an end view of the roller with a particular embodiment of a control system; and FIG. 3 is a detailed view of rails and connectors in the control system of FIG. 2, viewed from above.

Valsen i fig. 1 og 2 omfatter et inderrør 1 og et hermed 35 koaksialt og parallelt yderrør 2. Disse to rør fastholdes i deres indbyrdes position af endeplader 8 og eventuelt skotplader 11 et passende antal steder i valsens længderetning,The roller of FIG. 1 and 2, an inner tube 1 and a coaxial and parallel outer tube 2 are provided therein. These two tubes are held in their mutual position by end plates 8 and optionally bulkheads 11 a suitable number of places in the longitudinal direction of the roller,

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- 6 - bl.a. afhængigt af valsens længde og rørenes stivhed. Yderrøret 2 er langs en aksial snitflade 6 delt i to rørskaller, en såkaldt fast rørskal 3, som står i forbindelse med det indre rør 1, og en bevægelig rørskal 4, der kan 5 dreje omkring et spyd 5, der forløber aksialt og står i forbindelse med den faste rørskal, især via ende- og/eller skotpladerne 8,11. Ende- og skotpladerne er vist delt svarende til yderrørets deling i en fast del 9, som er fæstnet, f.eks. svejst, til den faste rørskal 3, og en del 10 10 fæstnet til den bevægelige rørskal 4. Udskæringer i disse ende- og skotpladedele danner sæde for åbne-/lukkestyre-systemet, der f.eks. kan være udformet som vist i fig. 2 og 3. Her er vist to skinner 15,16, som fastholdes af spyd 20 henholdsvis 21 til den faste henholdsvis bevægelige 15 rørskal via ende- og skotpladerne, og en midterskinne 17, der er knyttet til de to faste skinner ved hjælp af forbindelsesled 18, navnlig kædeled 22,23, eventuelt flere parallelle sæt af kædeled 22,22^23,231.- 6 - i.a. depending on the length of the roller and the rigidity of the tubes. The outer tube 2 is divided along an axial sectional surface 6 into two tube shells, a so-called solid tube shell 3 which communicates with the inner tube 1, and a movable tube shell 4, which can rotate about a spear 5 which extends axially and stands in connection with the solid tube shell, especially via the end and / or bulkhead plates 8,11. The end and bulkhead plates are shown divided corresponding to the dividing of the outer tube into a fixed portion 9 which is attached, e.g. welded to the fixed pipe shell 3, and a part 10 10 attached to the movable pipe shell 4. Cutouts in these end and bulkhead parts form a seat for the open / close control system, e.g. may be designed as shown in FIG. 2 and 3. Here are shown two rails 15,16, which are held by spears 20 and 21 respectively to the fixed and movable pipe shells via the end and bulkhead plates, and a middle rail 17 which is attached to the two fixed rails by means of connecting joints. 18, in particular chain link 22.23, optionally several parallel sets of chain link 22.22 ^ 23.231.

Claims

A roller for making or machining hollow blanks comprising an inner tube (1) and an outer body, in particular an outer tube (2) arranged parallel and coaxial to the inner tube having at least two radial end or bulkhead plates ( 8,11) in between, and intended to rotate, the outer tube (2) comprising a fixed tube shell (3) and a movable tube shell (4) rotatable about a spear 10 (5) connected with the fixed tube shell (3) and for stepwise extending parallel to the longitudinal axis of the roller, which outer tube can be opened and closed along a sectional sheet (6), which is oriented in particular in the longitudinal direction of the roller, with a roller system attached to it. cause the opening and closing of the outer tube to be characterized in that the two tube shells (3,4) have curved surfaces which are almost equal, the longitudinal axis of the spear (5) and the sectional surface (6) of the fixed tube shell together defining a nearly diametrical plane (7). ). 20

A roller according to claim 1, characterized in that at least two end (8) or bulkhead plates (11) are divided into two parts (9,10) which are fastened to a section corresponding to the movable pipe shell, namely almost diametrically. to the 25 fixed (3) and movable (4) pipe shells respectively, these parts (9,10) forming the seat of the spear (5) and of the control system.

Roll according to claims 1-2, characterized in that the control system for the opening and closing of the outer tube comprises two rails (15, 16), which are mainly extended in the longitudinal direction of the roller and fixed to each part (9, 10) of the parts. plates (8,11), and at least one further rail (17) disposed between these rails, the rails being interconnected transversely via movable connecting links (18) so that the rails are activated by activating these moving links (18). ) can change their spacing, thereby removing or moving the movable tube shell (4) from the fixed tube shell (3) and opening or closing the roller. - 8 - DK 165495 B

Roll according to claim 3, characterized in that the control system comprises three parallel rails, the two outer rails (15,16) being fixed at appropriate axial intervals to each additional spear (20, 21) through the end and / or bulkhead portions ( 9,10), and thus fixedly anchored 10 to each tube shell (3,4), while the middle third rail (17) at appropriate axial intervals via two chain links (22,23), in particular two sets of chain links (22,22 '). (23,23 ') is in movable communication with the two fixedly anchored rails (15,16). 15

Roll according to claims 3-4, characterized in that the pipe shells (3,4) are in the position of the rails, where the connecting links (18; 22-23) are in the unaffected or self-locked position, in particular in the line or close to 20 lines. , exhibit a desired distance, while, when the connectors are in a non-self-locking, affected, in particular angular position, adjacent to one another along the section surface (6).

Roll according to claims 1-5, characterized in that it is used for the manufacture of hollow articles of textile, cardboard, paper, plastic and similar materials.