SE194103C1

SE194103C1 -

Info

Publication number: SE194103C1
Authority: SE
Publication date: 1964-01-01

Description

Uppfinnare: N Rantamo Foreliggande uppfinning avser en anordning vid ramsagar, och har till andam.A1 att forhindra saghladets fastskarning i virket viii dess uppdtgdende rorelse samt utjamna sdgbladets inskdrning yid den neddtgdende rbrelsen i det att sagbladets rorelse hlir langsammare dâ densamma kommer fram till sitt undre som till sitt ovre ldge, medan virket daremot r6r sig framat mot sdgbladet med konstant hastighet. Inventor: N Rantamo The present invention relates to a device for frame saws, and is intended to prevent the saw blade from getting stuck in the wood due to its upward movement and to even out the saw blade's incision by the lowering movement in that the saw blade's movement becomes slower to the front. as to its upper ldge, while the wood, on the other hand, moves forward towards the saw blade at a constant speed.

Med hjalp av anordningen enligt uppfinningen kan sdlunda sdgbladets inskarning i virket under den egentliga sagrorelsen instãllas sA, att den. blir direkt beroende av sagbladets rorelsehastighet, sa att sagbladet under sin langsammare rorelse skdr in i virket i mindre man och under den snabba rorelsen djupare, samtidigt som sagbladens ovre hang kan installas efter behov. With the aid of the device according to the invention, the notch of the saw blade in the wood during the actual sawing movement can thus be adjusted so that it. becomes directly dependent on the speed of movement of the saw blade, so that during its slower movement the saw blade slides into the wood in smaller man and during the fast movement deeper, at the same time as the upper slope of the saw blade can be installed as needed.

Anordningen enligt uppfinningen Janne- teeknas ddrigenom, att den sagbladen uppbdrande ramen är anordnad att under sin nedoch uppdtgdende rorelse styras av mot ramens inmatningssida verkande, kring en med ramens plan parallell axel roterbara formtrissor och med dessa samarbetande mot ramens utmatningssida verkande mottrissor, av vilka atminstone formtrissorna dro tvangsdrivna och synkroniserade i forhallande till veystaksrorelsen och salunda utbildade, att den ena halvan av trissornas omkrets styr ramens nedatgaende rorelse och tvingar sagbladen att intranga i virket, medan ater den andra halvan av trissornas omkrets tvingar ramen att under sin uppatgdende rorelse fOrskjutas i inmatningsriktningen sd., att sdgbladen frigoras frail virket. The device according to the invention is characterized in that the saw frame supporting the saw blade is arranged to be guided during its downward movement by rotating forming pulleys acting against the feed side of the frame, rotatable about a shaft parallel to the plane of the frame and cooperating with them. the form pulleys were forcibly driven and synchronized in relation to the veystaks movement and thus educated that one half of the circumference of the pulleys controls the downward movement of the frame and forces the saw blades to penetrate the wood, while the other half of the circumference of the pulleys forces the frame to move during its upward direction. sd., that the sdg leaves are released frail the wood.

En utforingsform av uppfinningen har askadliggjorts schematiskt sd.som ett exempel d de bifogade ritningarna, ddr fig. 1 visar en del av ramsagen sedd Iran sidan, varvid samtliga for uppfinningen ova.- sentliga delar uteldmnats. An embodiment of the invention has been illustrated schematically as an example in the accompanying drawings, in which Fig. 1 shows a part of the frame saw seen from the Iran side, all parts of the invention not essential to the invention being omitted.

Fig. 2 visar en detalj av en annan utforings form och fig. 3 ramens rorelse under ett arbetsslag. ritningarna avser 1 de med vevstaken 11 synkroniserade, tydngsdrivna formtrissorna, som med hansyn till oinkretsformen svarar mot den onskade formen hos den i fig. 3 askadliggjorda rorelsebanan for ramen. Vid ramen har fastgjorts vertikalstyrningar 3, som motsvara slagldngden och under formedling av vilka °eh i ramsAgens stomme horisontellt rOrliga barare 4 for rullar 5 och 6 den genom formtrissorna 1 fororsakade rorelsen overfores till ramen. Pa andra sidan am styrningarna 3 finnas likadana barare 4 med rullar 5 och 6 av vilka rullarna 5 samverka med mottrissorna 2, vilken omkrets är till sin form omkastad i jamfOrelse med omkretsen has trissorna 1. Mottrissorna 2 aro i likhet med trissorna 1 tvangsdrivna och synkroniserade. Pa detta sdtt bibringas hela ramen en. horisontell, fram- och atergaende rorelse och rorelsebanan hos ramen under en slagldngd svarar, sasom visas i fig. 3, mot formen av trissornas omkrets. I foljd Wray losgora sig sagbladen frail virket redan nagot innan ramen borjar sin uppatgaende rorelse och halles fria Iran virket fOr att viii sin Atergang till sitt ovre (Midge ater komma i skdrberoring med detsamma, vilken beroring bibehalles styrd av den motsvarande periferihalvan has trissorna 1 under hela den neddtriktade skarrorelsen. Fig. 2 shows a detail of another embodiment and Fig. 3 the movement of the frame during a working stroke. The drawings refer to the weight-driven mold pulleys synchronized with the connecting rod 11, which with a view of the non-circuit shape correspond to the desired shape of the path of movement of the frame which has been damaged in Fig. 3. Vertical guides 3 corresponding to the stroke length have been attached to the frame, and during the formation of which, in the frame of the frame saw, horizontally movable carriers 4 for rollers 5 and 6, the movement caused by the forming pulleys 1 is transmitted to the frame. On the other side of the guides 3 there are similar bars 4 with rollers 5 and 6, of which the rollers 5 cooperate with the counter-pulleys 2, which circumference is inverted in shape in comparison with the circumference of the pulleys 1. Like the pulleys 1, the counter-pulleys 2 are forcibly driven and synchronized. . In this way, the entire frame is imparted. horizontal, reciprocating motion and the path of motion of the frame during a stroke corresponds, as shown in Fig. 3, to the shape of the circumference of the pulleys. According to Wray, the saw blades detach from the wood already slightly before the frame begins its upward movement and are kept free of Iran wood in order to viii its Return to its upper the whole downward-directed scarring motion.

Trissorna 1 och 2 dro anbragta i stod i form av horisontellt forskjutbara barare 7 sâ att man genom en forskjutning av desamma kan variera ramens overhang. The pulleys 1 and 2 are mounted in a stand in the form of horizontally displaceable bars 7 so that by displacing them they can vary the overhang of the frame.

Vertikalstyrningarna 3 aro lampligen anordnade pa sa sail, att de kunna vridas omkring sin i ramen fastgjorda axel pa ett reglerbart satt, varigenom banan for ramens upp- och nedatgdende rorelse kan varieras. The vertical guides 3 are suitably arranged on such a sail that they can be rotated about their axis fixed in the frame in an adjustable manner, whereby the path of the upward and downward movement of the frame can be varied.

Konstruktionen enligt fig. 2 overensstammer i huvudsak med utforingsformen enligt fig. 1 farutom att mottrissorna 2 och de med 2— — dessa samverkande rullarna 5 och 6 ersatts genom en enda rulle 8, som av en fjader 9 pressas mot ena sidan av vertikalstyrningen 3. I stallet for rullar kunna glidstycken anvandas. The construction according to Fig. 2 substantially corresponds to the embodiment according to Fig. 1, except that the counter-pulleys 2 and the rollers 5 and 6 cooperating with these are replaced by a single roller 8, which is pressed by a spring 9 against one side of the vertical guide 3. Instead of rollers, sliding pieces can be used.

Rorelsehanan for ramen kan naturligtvis aven varieras genom att sidorna av vertikalstyrningarna 3 gives en varierande form. Regleringen av overhanget kan naturligtvis aven astadkommas om nagondera av trissorna 1 och 2 yore fast anbragt vid ramsagens stomme, sâsom ritningen visar. The movement of the frame can of course also be varied by giving the sides of the vertical guides 3 a varying shape. The adjustment of the overhang can of course also be effected if any of the pulleys 1 and 2 are fixedly attached to the frame of the frame saw, as the drawing shows.

Hojden av fig. 3 motsvarar slaglangden, den horisontella pilen 12 betecknar virkets inmatningsriktning. Den med nedatriktade pilar 13 visade banrorelsen motsvarar ramens nedatriktade sagningsrorelse, medan den med uppatriktade pilar visade hanrorelsen 14 motsvarar ramens atergangsr5relse. Sasom framgar av derma figur forflytta sig klingorna vid slutet air sagningsrarelsen i matningsriktningen och frigoras yid vandpunkten fiir att hallos fria fran virket under hela atergangsrorelsen och fifirst vid eller nara slutet av den uppatgaende r8relsen aterforas i sagkontakt. For-men am banrarelsen är beroende av profilformen hos trissorna 1 och 2 och av vertikalstyrningarnas 3 stallning i forhallande till vertikalplanet avensom en event, variation av formen has vertikalstyrningarnas 3 sidoytor. The height of Fig. 3 corresponds to the stroke, the horizontal arrow 12 denotes the feed direction of the wood. The path movement shown with downward arrows 13 corresponds to the downward sawing movement of the frame, while the male movement 14 shown with upward arrows corresponds to the return movement of the frame. As can be seen from this figure, the blades at the end of the sawing movement move in the feed direction and are released at the water point to be released from the wood during the entire return movement and only at or near the end of the ascending movement are returned into saw contact. The shape of the web is dependent on the profile shape of the pulleys 1 and 2 and on the position of the vertical guides 3 in relation to the vertical plane, as well as an event, variation of the shape has the side surfaces of the vertical guides 3.

Formtrissorna kunna vara antingen fast anbragta vid ramsagens stomme eller i en sarskild ram, som kan forskjutas fram och ater i forhallande till matningsriktningen. The forming pulleys can be either fixedly attached to the frame of the frame saw or in a special frame, which can be displaced back and forth in relation to the feeding direction.

Claims

Patent claim:

1. Device for frame saws provided with saw blades which, during the upward movement of the frame, free themselves from the timber under sawing, characterized in that the frame supported by the saw blade is arranged to be guided during its downward and upward movement against the feed side of the frame. , about a form pulley (1) rotatable parallel to the plane of the frame and with these cooperating counter-pulleys (2) acting on the discharge side of the frame, of which at least the form pulleys (1) are forcibly driven and synchronized in relation to the crank and thus formed, that one half of the circumference of the pulleys, the downward movement of the frame controls and forces the saw blades to penetrate the wood, while the other half of the circumference of the pulleys forces the frame to be displaced during its upward movement in the feed direction so that the saw blades are released from the wood.

Device according to claim 1, characterized in that the shape of the counter-pulleys (2) corresponds to the shape of the shaped pulleys (1).

Device according to patent claim 1 or 2, characterized by conveying means (4) with at their resp. spirits arranged rollers (5 and 6) resp. sliding pieces, which forming means (4) are arranged to move horizontally the frame of the frame saw between the mold (1) and the counter pulleys (2) while vertical guides (3) fastened to the saw frame.

Device according to patent claim 3, characterized in that the counter-pulleys (2) are replaced by rollers (8) resp. sliders, which are arranged to be pressed by a spring (9) against the side surface of the vertical guides (3).

Device according to one of the preceding patent claims, characterized in that the vertical guides (3) are controllably pivotable in the vertical plane. Cited publications: Patents from Sweden 121,556; Germany 683 92 3.