DK175987B1 - Former head with rotating drum - Google Patents
Former head with rotating drum Download PDFInfo
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- DK175987B1 DK175987B1 DK200401185A DKPA200401185A DK175987B1 DK 175987 B1 DK175987 B1 DK 175987B1 DK 200401185 A DK200401185 A DK 200401185A DK PA200401185 A DKPA200401185 A DK PA200401185A DK 175987 B1 DK175987 B1 DK 175987B1
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- DK
- Denmark
- Prior art keywords
- drum
- bearing
- segments
- head according
- drums
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/736—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged characterised by the apparatus for arranging fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Tyre Moulding (AREA)
- Replacement Of Web Rolls (AREA)
- Paper (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Nonwoven Fabrics (AREA)
- Preliminary Treatment Of Fibers (AREA)
Description
DK 175987 B1 iDK 175987 B1 i
Den foreliggende opfindelse angår et formerhoved af den art, der omfatter mindst én roterende tromle, der ved hver ende er monteret i en lejegavl, og hvori en nålevalse er monteret, og som anvendes ved tørformning af fibrøst væv, hvor et fibermateriale op-blandet med luft tilføres ved indblæsning i nævnte roterende tromle.The present invention relates to a molding head of the type comprising at least one rotating drum mounted at each end in a bearing end and in which a needle roller is mounted and used for dry forming fibrous web, wherein a fiber material is mixed with air is supplied by blowing into said rotating drum.
55
Fra industrien kendes formerhoveder, hvor der i enderne af roterende perforerede tromler indblæses en blanding af fibre og luft. Inde i tromlerne er der monteret en nålevalse, der ligeledes er roterbar, og som holder de enkelte fibre svævende, så der ikke opstår klumper. Formerhovedet er anbragt oven over en endeløs løbende formervire 10 overfor en vakuumkasse, således at fibrene ved virkning fra vakuumet suges igennem perforeringen i tromlen og fikseres på den underliggende formerwire.Forming heads are known from the industry, where a mixture of fibers and air is injected into the ends of rotating perforated drums. Inside the drums is mounted a needle roller, which is also rotatable, which keeps the individual fibers floating so that no lumps occur. The forming head is positioned above an endless continuous forming wire 10 opposite a vacuum box, so that, by action from the vacuum, the fibers are sucked through the perforation in the drum and fixed to the underlying former wire.
I de kendte formerhoveder er der almindeligvis to tromler, hvor den ene roteres med formerwirens fremløbsretning og den anden imod. Alternativt kan der være et andet 15 antal tromler. Nålevalseme, der er forsynet med radialt forløbende pigge, roteres almindeligvis imod de respektive tromlers omløbsretning.In the known mold heads there are usually two drums, one rotating with the direction of the flow wire and the other against. Alternatively, there may be another 15 number of drums. The needle rollers provided with radially extending spikes are generally rotated against the direction of rotation of the respective drums.
Hidtil har tromlerne hidtil været lejret i lejegavle i en ramme, der understøtter formerhovedet samt almindeligvis også vakuumkassen og formerwiren. Nålevalseme har 20 været understøttet i lejekonsoller placeret udenfor enderne af tromlerne.So far, the drums have so far been mounted in bearing ends in a frame supporting the mold head as well as generally the vacuum box and mold wire. The needle rollers have been supported in bearing brackets located outside the ends of the drums.
Det er typisk, at formerhoveder har en bredde på ca. fire meter. 1 sådanne formerhoveder er det normalt, at nålevalseme skal roteres med en hastighed på op til 1200-1400 omdrejninger per minut for at opnå den ønskede kapacitet. Tromlerne roteres normalt 25 med en hastighed på ca. 200 omdrejninger per minut. Der stilles således krav til lejring af både tromlerne og nålevalseme.Typically, mold heads have a width of approx. four meters. In such forming heads, it is normal for the needle rollers to be rotated at a speed of up to 1200-1400 rpm to achieve the desired capacity. The drums are usually rotated at a speed of approx. 200 rpm. Thus, requirements are set for the storage of both the drums and the needle rollers.
Hvis et formerhoved skal have en aktiv bredde på ca. fire meter, kan nålevalseme ikke roteres med den ønskede hastighed uden risiko for at der opstår egensvingninger. Det-30 te forringer kvaliteten af det tørformede produkt.If a forming head is to have an active width of approx. four meters, the needle rollers cannot be rotated at the desired speed without the risk of intrinsic oscillations. This detracts from the quality of the dry product.
Perforeringen i tromlerne har en udformning, der er bestemt ud fra de fibre, som benyttes til fremstillingen af det fibrøse væv. Der er behov for at skifte tromlerne, således at der anvendes perforeringer med passende form, når der skal fremstilles fibrøse 2 DK 175987 B1 væv af forskellige typer fibre og/eller fiberblandinger. Eksempelvis bruges der til fremstilling af papirprodukter eller bleprodukter primært cellulosefibre, som kan være blandet med længere bindefibre.The perforation of the drums has a design which is determined from the fibers used in the preparation of the fibrous tissue. There is a need to change the drums so that perforations of appropriate shape are used to produce fibrous webs of various types of fibers and / or fiber blends. For example, paper products or diaper products are used primarily to produce cellulose fibers which may be blended with longer binder fibers.
5 Ved omstilling af formerhoveder fra en type fibre/fiberblånding til en anden type er det nødvendigt at udskifte tromlerne. Hidtil har denne udskiftning været langsommelig og pladskrævende. For at udskifte en tromle har det været nødvendigt at afmontere nålevalsen og trække den ud af enden af tromlen. Der har således været behov for en fri plads ved siden af formerhovedet svarende til formerhovedets bredde, idet nåleval-10 sen strækker sig over hele længden af tromlen og dermed også formerhovedets bredde.5 When changing mold heads from one type of fiber / fiber blend to another type, it is necessary to replace the drums. So far, this replacement has been slow and laborious. To replace a drum, it has been necessary to remove the needle roller and pull it out of the end of the drum. Thus, there has been a need for a free space next to the mold head corresponding to the width of the mold head, the needle roll extending over the entire length of the drum and thus also the width of the mold head.
Efter udtagning af nålevalsen kan tromlen afmonteres fra sine lejekonsoller og fjernes, hvorefter en ny tromle monteres. Derefter kan nålevalsen genmonteres i den nye tromle. Tidsforløbet for en sådan udskiftning har kunnet tage op til ca. 10 timer.After removing the needle roller, the drum can be removed from its bearing brackets and removed, after which a new drum is mounted. The needle roller can then be reassembled in the new drum. The time course for such a replacement could take up to approx. 10 hours.
15 Det er formålet med den foreliggende opfindelse at anvise et formerhoved, der er udformet på en måde, som muliggør en enkel udskiftning af tromlerne, og hvor der ikke stilles krav om betydelig plads ved siden af formerhovedet for at kunne foretage udskiftningen, og hvor det samtidig er muligt at reducere risiko for egensvingninger i nålevalsen.It is the object of the present invention to provide a forming head which is designed in a manner which allows for a simple replacement of the drums and where no substantial space is required next to the forming head in order to make the replacement and where at the same time it is possible to reduce the risk of intrinsic oscillations in the needle roller.
2020
Dette opnås ifølge den foreliggende opfindelse med et formerhoved af den indledningsvis nævnte type, som er særpræget ved, at tromlen er sammensat af mindst to let adskillelige i aksialretningen del cylindriske segmenter, der hver ved hver af deres ender er monteret på en lejering, der er fremspringende fra lejegavlen, og som rager ind i 25 tromlen, at tromlesegmenteme er sammenholdt på lejeringen af en tilsvarende segmentopdelt spændering, og at nålevalsen ved hver ende er monteret på en lejekonsol i lejegavlen.This is achieved according to the present invention with a molding head of the type mentioned in the introduction, which is characterized in that the drum is composed of at least two easily separable axial segments of cylindrical segments, each of which is mounted at each end on a bearing which is projecting from the bearing end and projecting into the drum, that the drum segments are bonded to the bearing ring of a corresponding segmented tension and that the needle roller is mounted at each end on a bearing bracket in the bearing end.
Idet tromlen er fremstillet af segmenter, er det muligt at lade nålevalsen forblive på 30 sine lejekonsoller ved udskiftning af tromlen. Det er blot nødvendigt at åbne spænderingen og frigøre tromlesegmenteme. Disse tromlesegmenter kan frit løftes op i mellemrummet mellem lejegavlene. Det eller de yderligere tromlesegmenter, som ikke løftes fri, og som er placeret på en nedefter vendende side af lejeringen, drejes opefter, hvorefter disse også løftes fri fra lejeringen. Efter fjernelse af tromlesegmenteme vil 3 DK 175987 B1 det være muligt at placere nye tromlesegmenter, idet disse løftes på plads på lejeringen imellem de to lejegavle. Når tromlesegmenteme er placeret på lejeringen, monteres spænderingen igen, hvorefter formerhovedet er klar til drift.As the drum is made of segments, it is possible to leave the needle roller on its bearing brackets when replacing the drum. It is only necessary to open the tension ring and release the drum segments. These drum segments can be freely lifted in the space between the bearing ends. The additional drum segment (s) which is not lifted free and which is located on a downwardly facing side of the bearing ring is rotated upwards, after which these are also lifted free of the bearing ring. After removing the drum segments, it will be possible to place new drum segments as they are lifted into place on the bearing ring between the two bearing plates. When the drum segments are located on the bearing ring, the clamping ring is mounted again, after which the mold head is ready for operation.
5 Hvor det med kendte formerhoveder kunne tage op til 10 timer at udskifte tromlerne, kan der nu ske en udskiftning af tromlerne på ca. 1 - 2 timer. Endvidere vil der ikke være behov for fri plads ved siden af tromlen, idet der ikke er behov for at trække nå-levalseme sideværts ud af tromlerne, før tromlens udskiftning.5 Where it was possible to replace the drums with known forming heads, up to 10 hours, it is now possible to replace the drums of approx. 12 hours. Furthermore, there will be no need for free space next to the drum, as there is no need to pull the lateral levers laterally out of the drums before replacing the drum.
10 For at frigøre tromlen kræves der blot, at spænderingen løsnes. Spænderingen vil typisk være fremstillet af et antal segmenter svarende til antallet af tromlesegmenter, og disse segmenter vil typisk være forsynet med sammenspændingsflader eller -flanger, hvor der er behov for 1 - 2 skruer til sammenspænding af spænderingssegmenteme.10 To release the drum, simply release the clamping ring. The clamping ring will typically be made of a number of segments corresponding to the number of drum segments and these segments will typically be provided with clamping faces or flanges where 1-2 screws are needed to clamp the clamping segments.
Der vil således blot være behov for at løsne fa skruer for at frigøre spænderingsseg-15 menterne og dermed tromlesegmenteme fra lejeringen, som strækker sig et stykke ind i hver ende af tromlen.Thus, there will only be a need for loosening screws to release the clamping segments and thus the drum segments from the bearing ring which extends some distance at each end of the drum.
Ifølge en særlig udførelsesform er formerhovedet særpræget ved, at spænderingsseg-menter, tromlesegmenter og lejeringe har organer for udløselig fastgørelse af spænde-20 ringssegmenteme og tromlesegmenteme til lejeringene. Sådanne organer kan fortrinsvis være tilvejebragt i form af skruer, der passerer gennem huller i spænderingssegmenteme og tromlesegmenteme, og som er fastskruet i lejeringene.According to a particular embodiment, the molding head is characterized in that clamping segments, drum segments and bearing rings have means for releasably attaching the clamping segments and drum segments to the bearing rings. Such means may preferably be provided in the form of screws passing through holes in the tensioning and drum segments and which are screwed into the bearing rings.
Idet spænderingssegmenteme og tromlesegmenteme er fastholdt på lejeringen, vil alle 25 spænderingssegmenter kunne adskilles fra hinanden uden risiko for, at nedefter ven dende tromlesegmenter og spænderingssegmenter falder ned. Under demontering og montering vil der således ikke være risiko for beskadigelse af tromlesegmenteme under montering og demontering. j 30 Ifølge en yderligere udførelsesform er formerhovedet ifølge opfindelsen særpræget ved, at lejeringen har en yderdiameter svarende til tromlens inderdiameter, at der på lejeringens yderside er en fremspringende ryg, og at tromlesegmentemes endedele er profileret for dannelse af et spor til optagelse af lejeringens ryg. Alternativt er det muligt at profilere tromlesegmentemes endedele, således at disse har en indefter venden- 4 DK 175987 B1 de ryg og udforme lejeringen med et spor til optagelse af en sådan profilering. Ved denne udformning vil det være muligt at undgå risiko for en aksial forskydning af tromlen i forhold til lejeringen. Samvirkningen mellem den fremspringende ryg og sporet vil samtidig tjene til en sikker og korrekt positionering af tromlesegmentet un-5 der montage.Since the clamping segments and drum segments are retained on the bearing ring, all 25 clamping segments will be able to be separated from each other without the risk of downward friending drum segments and clamping segments. Thus, during disassembly and assembly, there will be no risk of damage to the drum segments during assembly and disassembly. According to a further embodiment, the molding head according to the invention is characterized in that the bearing ring has an outer diameter corresponding to the inner diameter of the drum, that on the outside of the bearing there is a protruding back and that the end parts of the drum segments are profiled to form a groove for receiving the back of the bearing. Alternatively, it is possible to profile the end portions of the drum segments so that they have an inner back and shape the bearing ring with a groove to accommodate such profiling. In this embodiment, it will be possible to avoid the risk of axial displacement of the drum relative to the bearing. At the same time, the interaction between the protruding back and the groove will serve to ensure a safe and correct positioning of the drum segment during assembly.
Såfremt spænderingssegmenteme er fremstillet med et indvendigt spor, der er indrettet for optagelse af tromlesegmentemes profilerede endedele, opnås en yderligere fordel ved en fast sammenspænding med tromlens endedele sikkert fastspændt imellem den 10 indvendige i tromlen placerede lejering og den uden på tromlen anbragte spændering.If the clamping segments are made with an internal groove arranged to receive the profiled end portions of the drum segments, an additional advantage is obtained by a fixed clamping with the end parts of the drum securely clamped between the inner ring located on the drum and the outside of the drum.
Det foretrækkes, at der anvendes et antal spænderingssegmenter, som svarer til antallet af tromlesegmenter. Imidlertid vil det også være muligt at anvende forskelligt antal spænderingssegmenter og tromlesegmenter.It is preferred to use a number of clamping segments corresponding to the number of drum segments. However, it will also be possible to use different numbers of clamping segments and drum segments.
15 Såfremt der anvendes formerhoveder med meget stor bredde, kan der være placeret yderligere segméntopdeltc spænderinge i en eller flere midterpositioner mellem tromlens ender. Det bemærkes, at sådanne yderligere spænderinge vil være placeret i indbyrdes forskudte positioner over tromlens længde på efterfølgende tromler. Herved bliver det muligt at fa en ensartet nedlægning af fibre, selv om der anvendes sådanne 20 yderligere spænderinge. Behovet for yderligere spænderinge vil afhænge af formerhovedets bredde/tromlens længde samt dimensionering af selve tromlesegmenteme.If very large width molding heads are used, additional segment dividing tension rings may be located in one or more center positions between the ends of the drum. It is noted that such additional clamping rings will be located in mutually displaced positions over the length of the drum on subsequent drums. This makes it possible to achieve uniform deposition of fibers, although such additional tension rings are used. The need for additional clamping rings will depend on the width of the mold head / drum length as well as the dimensioning of the drum segments themselves.
Ved at fremstille formerhovedet med lejekonsolleme for nålevalseme placeret inden i lejegavlene bliver det muligt at fa en kortere længde' for den frie del af nålevalsen.By manufacturing the mold head with the bearing brackets for the needle rollers located within the bearing ends, it is possible to get a shorter length 'for the free part of the needle roller.
2525
Dette er en fordel, da det hermed bliver muligt at rotere nålevalseme med højere hastighed uden risiko for, at de bringes i egensvingning, som kan påvirke fordelingskvaliteten af fibrene. Egensvingninger i nålevalser opstår, når nålevalsens omdrejningshastighed bliver for høj eller længden af nålevalseme bliver for stor. En tidligere løsning 30 på dette problem har været at fremstille nålevalseme og tromlerne med en større diameter, hvorved det bliver muligt at ændre det kritiske omdrejningstal for egensvingninger. Imidlertid var denne kendte løsning unødig pladskrævende og dyr. Ved placering af nålevalsemes lejekonsoller så tæt på hinanden som muligt, bliver det muligt at rotere nålevalseme med højere omdrejningstal og derved opnå en højere produktions- 5 DK 175987 B1 kapacitet samtidig med en bedre kvalitet af fordelingen af fibrene i et formerhoved, som har en stor effektiv aibejdsbredde.This is an advantage, since it makes it possible to rotate the needle rollers at a higher speed without the risk of being caused by intrinsic oscillation which can affect the distribution quality of the fibers. Self-oscillations in needle rollers occur when the rotational speed of the needle roll becomes too high or the length of the needle rolls becomes too large. An earlier solution 30 to this problem has been to manufacture the larger diameter needle rollers and drums, thereby making it possible to change the critical oscillation rpm. However, this known solution was unnecessarily space consuming and expensive. By placing the needle bracket bearing brackets as close to each other as possible, it becomes possible to rotate the needle rollers at higher rpm and thereby achieve a higher production capacity while providing a better quality of the distribution of the fibers in a forming head which has a large effective width of application.
Det er muligt, at nålevalsemes lejekonsoller understøtter nålevalseme i en afstand fra S enderne deraf. Herved kan en del af nålevalseme befinde sig i lejegavlen eller uden for disse lejegavle i de forbindelsesrør, der forbinder efterfølgende tromler med hinanden for opnåelse af et cirkulerende flow af fibre gennem tromlerne.It is possible that the needle bracket bearing brackets support the needle rollers at a distance from the S ends thereof. Hereby, a portion of the needle rollers may be in the bearing end or outside of these bearing ends in the connecting tubes connecting subsequent drums to each other to obtain a circulating flow of fibers through the drums.
iin
Ved at anvende tromler, som er fremstillet af tromlesegmenter, er det muligt at sam-10 mensætte en tromle af segmenter, der har forskellige perforeringer for derved at påvirke produktegenskabeme. Således kan der foretages en variation i hulform og hulstørrelse. Imidlertid vil det også være muligt at sammensætte en tromle af tromlesegmenter, der har samme perforering.By using drums made of drum segments, it is possible to assemble a drum of segments having different perforations, thereby affecting the product characteristics. Thus, a variation in hole shape and size can be made. However, it will also be possible to assemble a drum of drum segments having the same perforation.
15 Opfindelsen vil herefter blive forklaret nærmere under henvisning til den medfølgende tegning, hvor fig. 1 viser et sidebillede af et formerhoved ifølge opfindelsen, fig. 2 et perspektivisk eksploderet billede af tromler og nålevalser til et formerho-20 ved ifølge opfindelsen, fig. 3 et forstørret partielt billede, der illustrerer en detalje i fig. 2, og fig. 4 et partielt snitbillede svarende til fig. 3.The invention will now be explained in more detail with reference to the accompanying drawing, in which fig. 1 is a side view of a mold head according to the invention; FIG. Figure 2 is a perspective exploded view of drums and needle rollers for a molding head according to the invention; 3 is an enlarged partial view illustrating a detail of FIG. 2, and FIG. 4 is a partial sectional view similar to FIG. Third
I de forskellige figurer vil identiske eller tilsvarende elementer blive betegnet med 25 samme henvisningsbetegnelse og vil derfor ikke blive forklaret i detaljer i forbindelse med hver enkelt figur.In the various figures, identical or similar elements will be designated by the same reference numeral and will therefore not be explained in detail in connection with each figure.
I fig. 1 ses et formerhoved 1 ifølge opfindelsen. Formerhovedet 1 er anbragt over en endeløs formervire 2, der fremføres ifølge pilen 3, således at der på oversiden af for-30 merviren 2 dannes et fibrøst væv 4. Neden under formerviren 2 i en position overfor formerhovedet 1 er der anbragt en vakuumkasse 5, som via en ledning 6 er forbundet med en vakuumkilde (ikke vist). Formerviren føres omkring omstyringsvalser 7. Det dannede fibrøse væv 4 fjernes fra formerviren ved hjælp af overføringsenheder, som er velkendte i faget.In FIG. 1 shows a molding head 1 according to the invention. The former head 1 is arranged over an endless former wire 2 which is advanced according to arrow 3, so that a fibrous web is formed on the upper side of the former wire 4. Below the former wire 2 in a position opposite the former head 1 a vacuum box 5 is arranged. which is connected via a line 6 to a vacuum source (not shown). The forming wire is passed around guide rollers 7. The formed fibrous web 4 is removed from the forming wire by means of transfer units well known in the art.
6 DK 175987 B16 DK 175987 B1
Fibermateriale opblandet med luft tilføres til formerhovedet 1 via et rør 8 for indblæs· ning i enden af den ene af to tromler 9, 10, der er tilvejebragt i formerhovedet. Tilførselsrøret 8 er forbundet med oprivningsorganer i form af hammermøller eller andet udstyr, som opriver fibermaterialet for dannelse af individuelle fibre eller individuelle 5 fibre indeholdende få agglomerater. Formerhovedet omfatter to roterende tromler 9, 10, som hver indeholder en nålevalse, der er indikeret ved 11, 12. Fibrene, som indføres i tromlen 8, cirkuleres igennem de to tromler 9,10, idet disse ved begge sider er forbundet med overføringsrør 13, der er velkendte i denne type formerhoved.Fiber material mixed with air is supplied to the mold head 1 via a pipe 8 for blow-in at the end of one of two drums 9, 10 provided in the mold head. The feed tube 8 is connected to tearing means in the form of hammer mills or other equipment which lists the fiber material to form individual fibers or individual fibers containing few agglomerates. The forming head comprises two rotating drums 9, 10, each containing a needle roller indicated at 11, 12. The fibers introduced into the drum 8 are circulated through the two drums 9,10, both of which are connected to transfer tubes 13 well known in this type of mold head.
10 Fig. 2 viser et eksploderet billede af visse dele fra formerhovedet 1. Det ses, at tromlerne 9, 10 er fremstillet af to halvcylindriske segmenter 9A, 9B, 10A, 10B. Tromlerne 9, 10 er monteret på lejeringe 14 (kun én er synlig), der er fremspringende fra lejegavle 15, 16 ved hver ende af tromlerne 9, 10. Nålevalseme 11, 12 er ved hver ende monteret på en lejekonsol 17 (kun én er synlig), som er placeret i eller umiddelbart på leje-15 gavlene 15, 16. Tromlesegmenteme 9A, 9B, 10A, 10B er fastholdt på lejeringene 14 ved anvendelse af spænderingssegmenter 18, der ligeledes er tilvejebragt som halvcir-I kelformede spænderingssegmenter. Hvert af spænderingssegmenteme har et hul 19, der kan liniestilles med et hul 20 i det tilknyttede tromlesegment for modtagelse af en skrue, som benyttes til at holde tromlesegmenteme og spænderingssegmenteme fast 20 på lejeringen 14.FIG. 2 shows an exploded view of certain parts of the mold head 1. It is seen that the drums 9, 10 are made of two semi-cylindrical segments 9A, 9B, 10A, 10B. The drums 9, 10 are mounted on bearing rings 14 (only one is visible) projecting from bearing end 15, 16 at each end of the drums 9, 10. The needle rolls 11, 12 are mounted at each end on a bearing bracket 17 (only one is visible) located in or immediately on the bed end 15, 16. The drum segments 9A, 9B, 10A, 10B are held on the bearing rings 14 using tensioning segments 18 which are also provided as semi-circular tensioning segments. Each of the clamping segments has a hole 19 that can be aligned with a hole 20 in the associated drum segment for receiving a screw used to hold the drum segments and clamping segments 20 on the bearing ring 14.
Fig. 3 viser et forstørret billede, som illustrerer sammenspændingen af tromlesegmentet 9B og spænderingssegmenter 18 på lejeringen 14.FIG. 3 is an enlarged view illustrating the clamping of the drum segment 9B and clamping segments 18 on the bearing ring 14.
25 Det ses, at lejeringen 14 har en fremspringende ryg 21, og at tromlesegmentets endedel er profileret for dannelse af et spor 22 til optagelse af ryggen 21. Det ses endvidere, at spænderingssegmentet 18 er profileret med et spor 23, som tjener til optagelse af den fremspringende ryg 21 med tromlesegmentet 9B’s profilering 22 placeret derimellem. Spænderingssegmenteme er forsynet med huller 24 for modtagelse af skruer til 30 sammenspænding af spænderingene.It will be seen that the bearing ring 14 has a protruding back 21 and that the end portion of the drum segment is profiled to form a groove 22 for receiving the back 21. It is further seen that the clamping segment 18 is profiled with a groove 23 which serves to receive the protruding back 21 with the drum segment 9B's profiling 22 located therebetween. The tensioning segments are provided with holes 24 for receiving screws for tightening the tensioning rings.
I fig. 3 er der i en sammenspændingsflade vist to huller 24, der er gevindhuller, der tjener til optagelse af skruer, som placeres i gennemgående huller (ikke vist) i det samvirkende spænderingssegment. Med denne udformning kan der anvendes forsæn 7 DK 175987 B1 kede skruer, således at der ikke optræder udragende dele på den cylindriske spænde-ring. Alternativt er det muligt at tilvejebringe flanger med skruehuller for sammenspænding af spænderingssegmenteme 18.In FIG. 3, two holes 24 are shown in a clamping surface, which are threaded holes for receiving screws which are placed in through holes (not shown) in the cooperating clamping segment. With this design, screws 7 DK 175987 B1 can be used so that no protruding parts appear on the cylindrical clamping ring. Alternatively, it is possible to provide flanges with screw holes for clamping the clamping segments 18.
5 Det ses, at de dannede spænderinge vil klemme tromlen fast om lejeringen 14 for rotation sammen med denne. Lejeringen 14 vil på en i sig selv kendt måde være lejret i lejegavlen 14 for at blive drevet i rotation med ønsket omdrejningshastighed.It is seen that the tension rings formed will clamp the drum about the bearing ring 14 for rotation with the latter. The bearing ring 14 will, in a manner known per se, be mounted in the bearing end 14 to be driven in rotation at the desired speed of rotation.
Fig. 2 viser, at nålevalseme har et spor 25, hvori de hviler på lejekonsollen 17. Leje-10 konsollen 17 er monteret på sidepladen af lejegavlen 16. Der er ligeledes tilvejebragt lejekonsol for nålevalsemes anden ende samt drivorganer for disse, således at de på kendt måde drives med et ønsket omdrejningstal.FIG. 2 shows that the needle rollers have a groove 25 in which they rest on the bearing bracket 17. The bearing-10 bracket 17 is mounted on the side plate of the bearing end 16. A bearing bracket is also provided for the other end of the needle roller and drive means for these, operated at a desired speed.
Fig. 4 viser et snitbillede gennem lejeringen ved en position ud for samlingen af spæn-15 deringssegmenteme og tromlesegmenteme, således som illustreret i fig. 3. Det ses, at lejeringen 14 placerer ind i lejegavlen 15, hvor den er lejret.FIG. 4 shows a sectional view through the bearing ring at a position next to the joint of the tensioning segments and the drum segments, as illustrated in FIG. 3. It can be seen that the bearing ring 14 places into the bearing end 15 where it is mounted.
Ovenstående figurer illustrerer en udførelsesform for opfindelsen, men andre udformninger er mulige, når blot disse anvender opfindelsens grundidé med segmentopdeling 20 af tromlerne 9,10.The above figures illustrate an embodiment of the invention, but other embodiments are possible if they only apply the basic idea of the invention with segment splitting 20 of the drums 9,10.
Således kan yderligere spænderinge være placeret en eller flere steder over tromlernes længde. Ligeledes bemærkes det, at tromlerne kan være fremstillet med anden perfore- ring end de cirkulære åbninger, som er vist. Således kan enhver form og størrelse være i 25 mulig for tromlemes perforering. ;Thus, additional tension rings may be located at one or more locations over the length of the drums. It is also noted that the drums may be made with a different perforation than the circular apertures shown. Thus, any shape and size may be possible for drum perforation. ;
Endvidere vil det være muligt at fremstille lejegavlene som en integreret del af en ma-skinramme og/eller som en integreret del af vakuumkassen 5. Endvidere er det muligt at fremstille lejegavlene tryktætte og forbinde disse med en trykkilde via en studs 26, 30 således at der sikres opretholdelse af et overtryk i lejegavlene.Furthermore, it will be possible to produce the bearing end members as an integral part of a machine frame and / or as an integral part of the vacuum box 5. Furthermore, it is possible to make the bearing end members pressure-proof and connect them to a pressure source via a stud 26, 30 so that an overpressure is maintained in the bearing ends.
i ii i
Claims (9)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK200401185A DK175987B1 (en) | 2004-08-05 | 2004-08-05 | Former head with rotating drum |
JP2007524178A JP2008508443A (en) | 2004-08-05 | 2005-07-02 | Former head with rotating drum |
MX2007001522A MX2007001522A (en) | 2004-08-05 | 2005-07-02 | Former head with rotary drum. |
PCT/DK2005/000459 WO2006012898A1 (en) | 2004-08-05 | 2005-07-02 | Former head with rotary drum |
CNA2005800323882A CN101027441A (en) | 2004-08-05 | 2005-07-02 | Former head with rotary drum |
CA002575879A CA2575879A1 (en) | 2004-08-05 | 2005-07-02 | Former head with rotary drum |
US11/659,385 US20070292547A1 (en) | 2004-08-05 | 2005-07-02 | Former Head With Rotary Drum |
EP05756476A EP1799900A1 (en) | 2004-08-05 | 2005-07-02 | Former head with rotary drum |
NO20071178A NO20071178L (en) | 2004-08-05 | 2007-03-02 | Rotating drum forming head. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK200401185 | 2004-08-05 | ||
DK200401185A DK175987B1 (en) | 2004-08-05 | 2004-08-05 | Former head with rotating drum |
Publications (1)
Publication Number | Publication Date |
---|---|
DK175987B1 true DK175987B1 (en) | 2005-10-31 |
Family
ID=35229548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK200401185A DK175987B1 (en) | 2004-08-05 | 2004-08-05 | Former head with rotating drum |
Country Status (9)
Country | Link |
---|---|
US (1) | US20070292547A1 (en) |
EP (1) | EP1799900A1 (en) |
JP (1) | JP2008508443A (en) |
CN (1) | CN101027441A (en) |
CA (1) | CA2575879A1 (en) |
DK (1) | DK175987B1 (en) |
MX (1) | MX2007001522A (en) |
NO (1) | NO20071178L (en) |
WO (1) | WO2006012898A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2078769A1 (en) * | 2008-01-11 | 2009-07-15 | Portico Ldt. | A forming head for dry forming a fibrous web |
US8474737B2 (en) | 2010-09-24 | 2013-07-02 | Owens Corning Intellectual Capital, Llc | Rotary forming apparatus |
US8882965B2 (en) | 2011-01-12 | 2014-11-11 | Seiko Epson Corporation | Paper recycling system and paper recycling method |
JP6354154B2 (en) * | 2013-12-25 | 2018-07-11 | セイコーエプソン株式会社 | Sheet manufacturing equipment |
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US2738557A (en) * | 1952-10-24 | 1956-03-20 | Dick Co Ab | Apparatus for the air deposition of fibers in the manufacture of fibrous structures |
US2940418A (en) * | 1959-03-27 | 1960-06-14 | Black Clawson Co | Paper machinery |
US3145430A (en) * | 1960-12-14 | 1964-08-25 | Weyerhaeuser Co | Felter head and agitator |
US3914080A (en) * | 1970-07-02 | 1975-10-21 | Union Carbide Corp | Apparatus for the high speed production of non-woven fabrics |
US3874831A (en) * | 1973-08-09 | 1975-04-01 | Fibre Formations Inc | Machine for producing pulp bats |
JPH0322281B2 (en) * | 1980-01-18 | 1991-03-26 | Sukyan Uebu Ai Esu | |
US4640810A (en) * | 1984-06-12 | 1987-02-03 | Scan Web Of North America, Inc. | System for producing an air laid web |
DK151482C (en) * | 1985-08-30 | 1988-05-24 | Scan Web | DISTRIBUTOR UNIT FOR DISTRIBUTION OF FIBERS, PREFERRED TO RUBBER PAPER |
US4995141A (en) * | 1990-07-16 | 1991-02-26 | Paper Converting Machine Company | Method and apparatus for facilitating product changeover in the manufacture of fluff pads for disposable diapers |
US5226991A (en) * | 1991-10-09 | 1993-07-13 | Mike Svaighert | Method of fabricating airlaid articles and apparatus for performing the method |
CA2199358C (en) * | 1994-09-06 | 2010-11-30 | John Harly Mosgaard Christensen | A method and a system for manufacturing broad airlaid paper webs containing an absorbing powder |
US5445777A (en) * | 1994-12-08 | 1995-08-29 | The Procter & Gamble Company | Air laying forming station with baffle member for producing nonwoven materials |
US6203654B1 (en) * | 1998-02-20 | 2001-03-20 | The Procter & Gamble Company | Method of making a slitted or particulate absorbent material |
DK172432B1 (en) * | 1997-12-23 | 1998-06-15 | Carsten Andersen | Former box for apparatus for dry forming a fibrous tissue. |
FI105837B (en) * | 1999-04-09 | 2000-10-13 | Bki Holding Corp | Distribution unit for use in dry forming of web material |
US6726461B2 (en) * | 1999-05-27 | 2004-04-27 | Bki Holding Corporation | Screen pipe for dry forming web material |
JP2003520912A (en) * | 2000-01-28 | 2003-07-08 | スキャン−ウェブ・アイ/エス | Equipment for dry dispersion of fiber materials |
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AU2002336068B2 (en) * | 2001-08-20 | 2007-12-20 | Dan-Web Holding A/S | High speed former head |
EP1440197B1 (en) * | 2001-08-20 | 2005-01-05 | Dan-Web Holding A/S | Former head with adjustable needle rollers |
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EP1554430B1 (en) * | 2002-10-15 | 2008-03-19 | A. CELLI NONWOVENS S.p.A. | Device for dry forming a web of fibers |
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-
2004
- 2004-08-05 DK DK200401185A patent/DK175987B1/en not_active IP Right Cessation
-
2005
- 2005-07-02 CA CA002575879A patent/CA2575879A1/en not_active Abandoned
- 2005-07-02 WO PCT/DK2005/000459 patent/WO2006012898A1/en active Application Filing
- 2005-07-02 JP JP2007524178A patent/JP2008508443A/en active Pending
- 2005-07-02 US US11/659,385 patent/US20070292547A1/en not_active Abandoned
- 2005-07-02 CN CNA2005800323882A patent/CN101027441A/en active Pending
- 2005-07-02 EP EP05756476A patent/EP1799900A1/en not_active Withdrawn
- 2005-07-02 MX MX2007001522A patent/MX2007001522A/en not_active Application Discontinuation
-
2007
- 2007-03-02 NO NO20071178A patent/NO20071178L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
WO2006012898A1 (en) | 2006-02-09 |
CA2575879A1 (en) | 2006-02-09 |
MX2007001522A (en) | 2007-05-23 |
CN101027441A (en) | 2007-08-29 |
EP1799900A1 (en) | 2007-06-27 |
NO20071178L (en) | 2007-03-29 |
US20070292547A1 (en) | 2007-12-20 |
JP2008508443A (en) | 2008-03-21 |
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