DE316174C

DE316174C -

Info

Publication number: DE316174C
Application number: DENDAT316174D
Authority: DE

Description

Die gebräuchlichen Häckselmaschinen haben meist spiralförmige Messer, welche an den Speichen eines Schwungrades befestigt sind und bei der Drehung des Schwungrades an der Öffnung des Schneidkasterts vorbeigeführt werden. Das bei Häckselmaschinen häufig erforderliche Nachschleifen der Messer ist umständlich und zeitraubend.. Die Messer müssen zum Schleifen jedesmal abgeschraubt und nach dem Abschleifen wieder angeschraubt werden. Die Abnutzung der Messer ist an den verschiedenen Stellen je nach der Entfernung der betreffenden Schneidstelle von der Achse des Schwungrades eine verschiedene. Infolgedessen ist auch ein richtiges Nachschleifen schwierig. Man hat deshalb schon vorgeschlagen, statt der spiralförmigen Messer umlaufende Kreismesser zu verwenden, welche leichter genau herzustellen sind, sich gleichmäßiger abnutzen und leichter nachgeschliffen werden können.The common chopping machines usually have spiral-shaped knives, which are attached to are attached to the spokes of a flywheel and when the flywheel rotates be guided past the opening of the cutting box. That with chopping machines Frequently required regrinding of the knife is cumbersome and time consuming .. The Knives have to be unscrewed each time for sharpening and again after sharpening be screwed on. The wear and tear of the knives depends on the different places after removing the relevant cutting point from the axis of the flywheel a different one. As a result, correct regrinding is also difficult. It has therefore already been proposed to use circular knives instead of spiral knives to use which are easier to manufacture precisely, wear out more evenly and are more easily reground can.

Die Befestigung und die Bewegung dieser Kreismesser hat man in ähnlicher AVeise ausgeführt wie die Befestigung und Bewegung der sonst üblichen spiralförmigen Messer, d- h. man hat die Achse der Kreismesser in den Armen eines Schwungrades oder einer Riemenscheibe befestigt und hat die Kreismesser mit der Riemenscheibe umlaufen lassen. Zur Erzeugung der Drehbewegung der Kreismesser um ihre eigene Achse war ein verwickelter Antrieb mittels Planetenräder o. dgl. erforderlich. Es trat auch hier neben der Schneidbewegung eine sehr beträchtliche ■Schlagbewegung ein, die darum noch ungünstiger wirkte, weil die Richtung des bei der Schlagbewegung auf das Messer ausgeübten Rückstoßes bald auf der einen Seite an der. Drehachse des Messers vorbei, bald durch die Drehachse hindurch und bald auf der anderen Seite an der Drehachse vorbei ging. Das Schneiden selbst wurde nur auf einem kleinen Drehwinkel des Umlaufes des Messers ausgeführt, während das Messer auf dem großten Teil seines Umlaufs keine Arbeit leistete, also nur einen »toten Weg« zurücklegte.The attachment and movement of these circular knives has been carried out in a similar manner like the attachment and movement of the otherwise usual spiral-shaped knives, i.e. you have the axis of the circular knife in the arms of a flywheel or a Belt pulley attached and has rotated the circular knife with the belt pulley. To generate the rotary motion of the circular knife around its own axis was a Complicated drive by means of planetary gears or the like. Required. It also appeared here alongside the cutting movement has a very considerable ■ impact movement, which is therefore even more unfavorable worked because the direction of the recoil exerted on the knife during the striking movement was soon on one side on the. Axis of rotation of the knife over, now through the axis of rotation and now on the other Side went past the axis of rotation. The cutting itself was only done on a small one Rotation angle of the circumference of the knife performed while the knife is on the largest Part of its orbit did not do any work, so it only covered a "dead path".

Die Erfindung bezieht sich auf Häckselmaschinen mit umlaufenden Kreismessern, welche sich durch besonders einfache Bauart auszeichnet, und bei welcher die genannten Übelstände vermieden sind. Das Schneiden erfolgt auf dem größten Teile des Messerweges. Der »tote Weg« ist also verhältnismäßig klein. Die Schneide wird auf dem ganzen Umfang des Kreismessers gleichmäßig abgenutzt. ■The invention relates to chopping machines with rotating circular knives, which is characterized by a particularly simple design, and in which the mentioned Evil conditions are avoided. The cutting takes place over the largest part of the knife path. The "dead way" is therefore relatively small. The cutting edge is on the The entire circumference of the circular knife is worn evenly. ■

Das Kreismesser erhält seinen Antrieb in der bei Fleischschneidmaschinen und -sägen bekannten Weise durch Eingriff eines auf der Achse des hin ■ und her bewegten Kreismessers befestigten Zahnrades in eine feststehende Zahnstange, unterscheidet sich aber in seiner Wirkungsweise von der bekannten Einrichtung dadurch, daß es sowohl beim Hingang als beim Rückgang schneidet. Hier- durch wird gleichfalls die gleichmäßige Abnutzung der Schneide günstig beeinflußt,The circular knife gets its drive in the meat cutting machines and saws known manner by engagement of a circular knife moving back and forth on the axis attached gear into a fixed rack, but differs in its mode of action from the known Establishment in that it cuts on both going and going down. Through this the uniform wear of the cutting edge is also favorably influenced,

Claims

The knife receives a rotary movement corresponding to the respective cutting direction around its axis. The drive device for alternating in one and the other The direction of rotation is extremely simple. The regrinding the knife can be used in the simplest way and in the shortest possible time without unclamping it Time. .......

The invention is shown in the drawing in an exemplary embodiment. ' There the invention for chopping machines Belger type, so z. B. with any ", designed. Device for moving the straw, with any device for setting the chopping length etc. can be used by the chopping machine other than the the device forming the subject of the invention only the front end of the mouthpiece drawn on the drawer of straw.

Fig. Ι is a view of the device in section along the line AB of. Fig. 2.. Fig. 2 is the associated plan. FIG. 3 is a cross section along line CD of FIG. 1.

ι is the front part of the frame of the chopping machine. 2 is the mouthpiece of the straw drawer. In front of this mouthpiece 2 and slightly above it, a horizontal ^1- degree guide 3 is attached, in which a cross head 4 can be moved back and forth by means of a crank 6 driven by a rotating shaft 5 and a connecting rod 7. A shaft 8 is rotatably mounted in the cross head 4. On the end of the shaft 8 facing the mouthpiece 2, a circular knife 9 and a gear 10 are attached. The gear wheel 10 is in engagement with a rack 11 fastened in the degree guide 3. The extreme left end 13 of the latter is hinged to the rack and is held by a pawl 13 in the position shown in FIG. After releasing the pawl falls. the end 12 of the rack down into the position shown in dotted lines in FIG. The outer end of the cutter shaft 8 carries a square 14 onto which a hand crank (not shown) can be placed. Is' the circular knife 9 in his

50th position on the far left dotted line, then can do the same thing. the grinding wheel 15 is an electrically driven one Grinding machine 16 are pushed up. 'If' the rack end 12 is disengaged, Put a hand crank on the square 14 and the grinding wheel 15 is indented and in driven in the direction of the arrow, then it is only necessary by means of the to brake the circular knife 9 a little on the square hand crank (so that it is not carried along by the grinding wheel 15 at the same peripheral speed), in order to be able to sharpen the circular knife quickly, for which only a very short break in operation is required. When the regrinding is finished, the grinding wheel 15 is in the dotted position pushed back and thereby disengaged.

During operation, the circular knife is punctured between the drawn out and the drawn position pushed back and forth. It learns through the intervention of the Gear 10 with the rack 11 alternately in one and the other direction of rotation a twisting motion. .

The knife edge cuts alternately in one and the other cutting direction. The "dead way" is very small. The knife essentially leads against the straw just one-cutting motion and. no flapping motion.

Godfather τ-An Proverbs:

i. Chopping machine with rotating circular knife, characterized in that the circular knife (9) by means of a crank mechanism in a straight guide (3) in front of the mouthpiece of the straw drawer in this way and is moved so that it cuts both on going as well as on going back, where.es both at the entrance as at, Fall is rotated by a fixed rack.

• 2nd chopper. after . Claim 1, characterized in that one end (12) of the in a known manner ■ for To achieve the rotary movement used rack (11) can be folded down, so that the circular knife is freely rotatable in its one end position and re-sharpened can be.

1 sheet of drawings.