SE127849C1

SE127849C1 -

Info

Publication number: SE127849C1
Authority: SE
Publication date: 1950-01-01

Description

KLASS 38 1:1 BEVILJAT DEN 2 FEBRUARI 19 PATENTTID FRAN DEN 6 JUNI 19 PUBLICERAT DEN 4 APRIL 19 Hartill en ritning. CLASS 38 1: 1 GRANTED ON 2 FEBRUARY 19 PATENT PERIOD FROM 6 JUNE 19 PUBLISHED ON 4 APRIL 19 In addition a drawing.

A. G. JOHANSSON, NALDEN oca S. BERGSTROM, STOCKHOLM. A. G. JOHANSSON, NALDEN oca S. BERGSTROM, STOCKHOLM.

HU Yid bearbetning av frail bark (och say) redan befriade stoekar, vilkas ved bliyit till visst djup impregnerad av garvsyra eller liknande samt harfor lampad anordning. HU Yid processing of frail bark (and say) already freed stokes, whose wood has been to a certain depth impregnated by tannic acid or the like and has a lamped device.

For att spara de stora kostnader som uppsta, om den vanligen for hand utforda barkningen av timmer sker i skogen brukar numera barkningen ske forst efter flottningen, d. -v. s. vid fabriken, dar barkningen kan utforas i clan Or sarskilt inrattade lampliga maskiner eller apparater. Nar det helt obarkade virket, sasom exempelvis är fallet vid flottningen, far ligga langre tid i vatten, blir emellertid ytveden narmast under barken och saver' impregnerad av garvsyra eller dylikt. Att delta skikt, som liar en tjocklek av nagon eller nagra millimeter, salunda blir impregnerat, saknar i manga fall betydelse, men om veden skall anvandas vid sulfitfabriker, och Allen i vissa andra fall, ãr det impregnerade skiktet mycket olagligt. Denna del av veden kan namligen svarligen kokas, utan bildar, out den medtages vid kokningen, en fOrorening, som for eller senare mhste avlagsnas och som farorsakar stort besvar under tillverkningsproceduren. Av nhmnda orsak ãr det av stor betydelse, att for sulfitfabriker avsedd ved befrias frail det salunda impregnerade vedskiktet, sä att det icke kommer med vid kokningen. Hittills liar det impregnerade skiktet vanligen avlagsnats frail stocken med hjalp av maskiner, vilka arbeta pa sadant satt, att samtidigt aven en betydande del av den underliggande, av garvsyran icke skadade veden bortarbetas. Detta innebar en direkt forlust av material, som for den totala produktionen vid en sulfitfabrik uppgar till valdiga mingder. Uppfinningen liar till syfte att sedan bark och say avlagsnats fran stocken mojliggora bortarbetning av enbart det av garvsyra eller dylikt inapregnerade vedskiktet, utan att av garvsyran oskadad ved avlagsnas. Sattet enligt uppfinningen kannetecknas i huvudsak darav, att for bortarbetande av det impregnerade skiktet skarorgan under framforande genom det impregnerade skiktet bringas att intranga I veden i stockens radiella riktning blott in-till dess en till skarorganen ansluten del bring-as till anliggning not det efter barkningen ännn kvarsthende ytskiktet av veden, varvid skarorganens intrangningsdjup ph f &hand bestammes efter det impregnerade skiktets tjocklek, sa att i mojligaste man endast det impregnerade vedskiktet genomtranges ay skarorganen, och att det shlunda uppluckrade impregnerade vedskiktet under anvandande av annat verktyg genom skrapning, skarDing, skjuvning eller liknande bortarbetas utan att av impregneringen oskadad ved avlagsnas. In order to save the large costs that arise, if it usually by hand challenges the barking of timber takes place in the forest, nowadays the barking usually takes place only after the flotation, i.e.. s. at the factory, where the barking can be performed in clan Or specially equipped lamp machines or appliances. However, when the completely unbarked wood, as is the case, for example, during flotation, is allowed to remain in water for a longer period of time, the surface wood becomes closest under the bark and is impregnated with tannic acid or the like. Participating layers, which are a thickness of a few or a few millimeters, are thus impregnated, is in many cases irrelevant, but if the wood is to be used in sulphite factories, and Allen in some other cases, the impregnated layer is very illegal. This part of the wood can namely be boiled responsibly, without forming, out it is included in the cooking, a contaminant, which sooner or later must be removed and which causes great difficulty during the manufacturing procedure. For the above-mentioned reason, it is of great importance that for sulphite factories intended for wood, the thus impregnated wood layer is freed from so that it is not included in the boiling. Hitherto, the impregnated layer has usually been removed from the log with the aid of machines which work in such a way that at the same time a considerable part of the underlying wood, not damaged by the tannic acid, is removed. This meant a direct loss of material, which for the total production at a sulphite factory amounts to huge quantities. The object of the invention is that after bark and sawdust have been removed from the log, it is possible to remove only the wood layer impregnated by tannic acid or the like, without the wood being removed undamaged by the tannic acid. The set according to the invention is mainly characterized in that for removal of the impregnated layer cutting means during advancement through the impregnated layer are caused to penetrate into the wood in the radial direction of the log only until a part connected to the cutting means is brought into contact with it after barking. the remaining surface layer of the wood, the depth of penetration of the cutting means being determined according to the thickness of the impregnated layer, so that as far as possible only the impregnated wood layer is penetrated into the cutting means, and that the thus loosened impregnated wood layer is used by cutting other tools. or the like are removed without removing undamaged wood from the impregnation.

Anordningen enligt uppfinningen kannetecknas i huvudsak darav, att f Or bearbetning av veden inrattade skarorgan aro kombinerade med en anliggningsdel, som är anordnad att komma till anliggning mot ett efter barkningen annu kvarstatende ytskikt av veden som samtidigt bearbetas av skarorganen, for att begransa skarorganens intrangningsdjup i veden, varvid skarorganen stracka sig endast flagon eller na.gra mm radiellt utanfOr anliggningsdelen, och att organ for ayskrapning eller -skjuvning av det med knivorganen uppluckrade vedskiktet forefinnas, vilka kniyorgan aro anordnade att ph i och for sig kant satt fOras i omkretsriktningen relativt den i maskinen befintliga stocken. The device according to the invention is mainly characterized in that for processing of the wood aligned cutting means are combined with an abutment part, which is arranged to come into abutment against a surface layer of the wood still remaining after the barking which is simultaneously processed by the cutting means, to limit the depth of penetration of the cutting means. the cutting means, the cutting means extending only the flake or a few mm radially outside the abutment part, and that means for scraping or shearing the wood layer loosened by the knife means are present, which cutting means are arranged so that the ph per se is set in the circumferential direction relative to the in the machine existing log.

Uppfinningen beskrives nedan narmare under hanvisning till ett a bifogade ritning visat utforingsexempel av en anordning for sattets utforande, Fig. 1 visar i andvy ett skarverktyg for uppskarning ay skaror i veden i en stock till ett forutbestamt djup. Fig. 2 visar skarverktyget i sidovy. Fig. 3 visa" ett modifierat utforande av skarverktyget och fig. 4 visar en partiell sektion genom detsamma i stone skala, I fig. 1 betecknar 1 en stock, vilken redan befriats frau bark och say. Stocken antages ford framat i pilens p riktning genom en maskin, i -vilken ar anordnad en roterande trumma, genom vilken stocken passerar. I trumman är pa en tapp 2 sviingbart lagrad en arm 3, vilken -yid den yttre fria anden uppvisar lager 4 for ett pa en axel 5 anordnat skarverktyg. Detta bestar av en vals 6, utanfor Tars cylindriska yta 7 stracker sig ett i skruvlinjeform anordnat, sag- eller knivartat skarorgan 8. Kni-vorganets hojd Over mantelytan 7 avpassas efter den beraknade tjockleken av det av garvsyra impregnerade ytskiktet i stockens ved. Tjockleken av skiktet, vilken upp- 2— — gar till mellan 1 °eh 3 mm, ibland mera, är beroende av den tid under vilken stocken obarkad legat i vatten. Da man for olika virkespartier val kanner denna blotliggningstid kan den 15.mpliga hajden av kniven latt bestammas for ett virkesparti som skall behandlas. Under det stocken frammatas genom den verktyget 3-8 uppbarande roterbara trumman ansattes skarverktyget mot stocken, t. ex. genom att armen 3 är fjaderbelastad. Harvid kan skarverktyget rulla Over stockens omkrets, men det kan i stallet ocksa med fordel vara positivt drivet genom t. ex. linor eller remmar 10, lopande Over en a axeln 5 anordnad linskiva 9. Remmarna drivas av en pa tappen 2 lagrad skiva 11, som drives pa lampligt satt, t. ex. Over en kuggtransmission, vars drivande hjul liar annan hastighet an. trumman. Vid skarverktygets rullning stocken intranger kniv- eller sagbladet i -veden i radial riktning av stocken till dess mantelytan 7 konnner till anliggning mot veden. Man vet saledes da, att snitten 15 i veden trangt igenom det impregnerade skiktet, men icke liingre. Genom de salunda upptagna sparen avskaras de i stockens langdriktning gaende vedfibrerna, varigenom det blir latt att bortarbeta det pa sá satt uppluckrade ytskiktet. Denna bortarbetning kan ske genom skrapning, skarning, skjuvning eller liknande. Harfor kan anvandas en skarnings-, skjuvningseller skrapanordning av principiellt samma slag som anvandes yid barkning av timmer. The invention is described in more detail below with reference to an exemplary embodiment of a device for carrying out the set shown in the accompanying drawing, Fig. 1 shows in the view a splicing tool for cutting splices in the wood in a log to a predetermined depth. Fig. 2 shows the splice tool in side view. Fig. 3 shows a modified embodiment of the joint tool and Fig. 4 shows a partial section through it on a stone scale. In Fig. 1 1 denotes a log, which has already been freed from bark and saw. The log is assumed to move forward in the direction of the arrow through a machine, in which a rotating drum is arranged, through which the log passes in. In the drum, an arm 3 is pivotally mounted on a pin 2, which - in the case of the outer free spirit has bearing 4 for a splicing tool arranged on a shaft 5. consists of a roller 6, outside the cylindrical surface 7 of the tar extends a helical, knife- or knife-shaped cutting member 8. The height of the knife member Above the mantle surface 7 is adapted to the calculated thickness of the surface layer impregnated by tannic acid in the log wood. , which amounts to between 2 ° and 3 mm, sometimes more, depends on the time during which the log has been in the bark undisturbed.When one can choose this exposure time for different batches of wood, the 15 mp height of the knife can easily determined for a batch of wood to be treated. While the log is being fed through the rotatable drum carrying the tool 3-8, the splice tool is applied to the log, e.g. in that the arm 3 is spring-loaded. In this case, the joint tool can roll over the circumference of the log, but in the stable it can also advantageously be positively driven by e.g. ropes or belts 10, running Over a rope pulley 9 arranged on the shaft 5. The belts are driven by a pulley 11 mounted on the pin 2, which is driven in a suitable manner, e.g. Over a gear transmission, the driving wheels of which have a different speed. the drum. During the rolling of the joint tool, the log penetrates the knife or saw blade into the wood in the radial direction of the log until its mantle surface 7 can abut against the wood. It is thus known then that the cuts 15 in the wood penetrate through the impregnated layer, but no less. Due to the grooves thus taken up, the wood fibers running in the longitudinal direction of the log are cut off, as a result of which it becomes easy to work off the surface layer thus loosened. This removal can be done by scraping, shearing, shearing or the like. For this purpose, a cutting, shearing or scraping device of basically the same type as used for barking timber can be used.

I den ovan angivna trumman, genom vilken timret passerar kan anordnas dels den i samband med fig. 1 och 2 ovan beskrivna uppslitsningsanordningen och dais en skrapanordfling eller liknande, som avlagsnar den uppluckrade veden. Givehis kan darvid tva eller flera uppslitsningsorgan anbringas i trumman, t. ex. fordelade runt omkretsen och/eller forskjutna i axiell riktning relativt varandra. De skrapande eller skjuvande organen kunna vara fasta, men man kan i stallet anvanda roterande skrap- eller skjuvningsorgan, t. ex. ett skjuvningsorgan, bestaende av en med gangartad skjuvyta forsedd roterande rulle, vars skjuvyta avskalar den av sparen 15 uppluckrade veden. .1yen vid dessa skraporgan kan man tanka sig att anordna anslag, som pa beskrivet satt bestamma intrangningsdjup et. In the above-mentioned drum, through which the timber passes, the slitting device described above in connection with Figs. 1 and 2 above can be arranged and there is a scraper device flake or the like, which removes the loosened wood. Givehis can then be fitted with two or more splitting means in the drum, e.g. distributed around the circumference and / or offset in the axial direction relative to each other. The scraping or shearing means may be fixed, but rotating scraping or shearing means may be used in the stable, e.g. a shear member, consisting of a rotating roller provided with a gait-like shear surface, the shear surface of which peels off the wood loosened by the spar 15. In the case of these scraper means, it is conceivable to arrange stops, which in the manner described determine the depth of penetration.

I fig. 3 visas ett andra utforingsexempel av ett skarorgan enligt uppfinningen. Har aro anordnade ett antal cirkularknivar eller -sagar 8, vilka Oro upptradda pa axeln 5 och atskilda av lampligen utbytbara ringar 16, varvid ringarnas 16 och klingornas 8 diameter avpassas efter det for ett virkesparti faststallda djupet ay det impregnerade skiktet. TydIigt är, att man for att bestamma intrangningsdjupet av klingorna I veden kan anvanda sidledes om valsen eller gruppen av klingor belagna ringar eller skivor, avsedda att kom ma till anliggning mot veden, sa att mellanringarna 16 ej behova utbytas, utan blott de namnda skivorna, nar annat intrangningsdjup erfordras. Skarorganen 8 kunna utforas mer eller mindre skarpslipade. Om de uppvisa sagtander vid omkretsen kunna de ha en bredd om nagra mm, sá att skarorna 15 bliva t. ex. 2 till 4 mm breda. Avstandet a mellan cirkularknivarna 8 (fig. 4), d. v. s. avstandet mellan skarorna 15, kan varieras t. ex. mellan 5 och 30 mm. Lampligen Or aystandet mellan 5 och 15 mm. Den. beskrivna anordningen for avlagsnande av det impregnerade ytskiktet av veden kan med fordel anbringas i direkt anslutning till en barkningsmaskin, varvid skraporna eventuellt Oro utbytta mot roterande skjuvningsorgan. Fig. 3 shows a second embodiment of a cutting member according to the invention. Arranged there are a number of circular knives or saws 8, which are arranged on the shaft 5 and separated by lamp-replaceable rings 16, the diameter of the rings 16 and the blades 8 being adapted to the depth determined for a piece of wood in the impregnated layer. It is clear that in order to determine the depth of penetration of the blades into the wood, rings or discs coated with the roller or group of blades, intended to come into contact with the wood, can be used laterally, so that the intermediate rings 16 need not be replaced, but only the said discs. when another penetration depth is required. The cutting means 8 can be made more or less sharp-sharpened. If they have saw teeth at the circumference, they can have a width of a few mm, so that the crowds 15 become e.g. 2 to 4 mm wide. The distance a between the circular knives 8 (fig. 4), i.e. the distance between the grooves 15, can be varied e.g. between 5 and 30 mm. Lampligen Or aystandet between 5 and 15 mm. The. The device described for removing the impregnated surface layer of the wood can advantageously be applied in direct connection to a debarking machine, the scrapers possibly being replaced by rotating shear means.

Claims

Patent claim:

Salt in the processing of already liberated logs from bark (and say), the wood of which has already been impregnated to a certain depth by tannic acid or the like, can be characterized in that for processing the impregnated layer, cutting means during penetration through the impregnated layer are caused to penetrate into the wood in the radial direction of the log only until a part connected to the cutting means is brought into abutment against the remaining surface layer of the wood after barking, the depth of penetration of the cutting means being determined in advance according to the thickness of the impregnated layer, so that only the impregnated wood layer is penetrated by the cutting means, and that the thus loosened impregnated wood layer using another tool is scraped off by scraping, cutting, shearing or the like without removing undamaged wood from the impregnation.

2. Set according to patent claim 1, characterized in that grooves or slits are placed around the log in the wood relatively close to each other with a spacing of between 5 and 30 mm, suitably between 5 and 15 mm.

3. A device for carrying out the set according to any one of patent claims 1 and 2, characterized in that for processing the wood, saw- or knife-like cutting means are provided combined with an abutment part, which is arranged to come into abutment against the surface layer of the wood, which is simultaneously processed in the cutting means, in order to limit the depth of penetration of the cutting means into the wood, the cutting means extending only a few or a few mm radially outside the abutment part, and that means for scraping or shearing the wood layer loosened by the knife means are present. means and scraping means Arranged to carry on and in front of the edge salt in the circumferential direction relative to the log present in the machine. - —3

4. A device according to claim 3, characterized in that the cutting means bead of circular knives or saws, which are separated from each other by cylindrical cylinders arranged on the same axis, the intermediate pieces in the knife roll formed by this salt being drawn by a radius which is sh much smaller than the radius of the knife, as the desired depth of the spades, which are to be absorbed into the wood.

Modification of a device according to patent claim 4, characterized in that the knife or saw means arc arranged in helical shape around the roller.

6. Device according to any one of the patent claims, 3-5, characterized in that the specified device for removing the partially impregnated surface layer is arranged in direct connection with a barking device in front of the machine. Stockholm 1950. Kungl. Boldr. P. A. Worstedt Zoller 500080