DE84043C

DE84043C -

Info

Publication number: DE84043C
Application number: DENDAT84043D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMTPATENT OFFICE

KLASSE 55: Papierfabrikation.CLASS 55: Paper manufacture.

DenThe

Gegenstandobject

vorliegenderpresent

Erfindunginvention

bildet ein Holzschleifverfahren, welches sich von dem gewöhnlichen Schleifverfahren dadurch unterscheidet, dafs an Stelle der periodisch zu füllenden Pressen ein Vorschubmechanismus tritt, welcher in Verbindung mit einer festen Führung des Holzes das Schleifen ganzer Holzstämme von beliebiger Länge gestattet.forms a wood grinding process, which differs from the usual grinding process distinguishes between the fact that instead of the presses to be filled periodically, a feed mechanism is used occurs, which in connection with a firm guidance of the wood, the grinding of whole logs of any length permitted.

Um das Holz nur in einer schmalen Fläche mit dem Stein in Berührung zu bringen und so das Todtmahlen der abgeschliffenen Fasern zwischen breiter Holzauflagefläche und Stein zu vermeiden und reichlichen Wasserzutritt an der eigentlichen Arbeitsstelle zu ermöglichen, wird das Holz während des Schleifern um seine Achse gedreht. Dabei wird, um der ersten Bedingung, der ununterbrochenen Holzzuführung , genügen zu können, das Holz so gegen den Stein geprefst, dafs seine Mittelachse in der Schleiffläche des Steines oder deren Verlängerung verläuft und so an das Holz eine kegelförmige Spitze angeschliffen wird. Statt des kegelförmigen Zuschliffs kann auch ein solcher von keilförmiger Gestalt stattfinden.In order to bring the wood into contact with the stone only in a narrow area and such as the death-grinding of the abraded fibers between the broad wooden surface and the stone to avoid and to allow abundant access to water at the actual work site, the wood is rotated around its axis during sanding. The first condition is the uninterrupted supply of wood to be able to suffice, the wood pressed against the stone so that its central axis runs in the grinding surface of the stone or its extension and so on the wood conical tip is ground. Instead of the conical cut, a those of a wedge-shaped shape take place.

Fig. ι und 2 zeigen für kegelförmigen Zuschliff die Ausführung eines Schleifers mit verticaler Achse bei Ausnutzung des Steinumfanges als Schleiffläche.Fig. Ι and 2 show a conical cut the execution of a grinder with a vertical axis when using the stone circumference as a grinding surface.

Das runde Holz wird in einer unten spitz zulaufenden Führung α gehalten, welche mit einem gegen den Stein liegenden Ausschnitt versehen und spitzwinklig zur Schleifbahn gerichtet ist.The round wood is held in a guide α which tapers to a point at the bottom, which is provided with a cutout lying against the stone and directed at an acute angle to the grinding track.

Eine gegen den Stein geneigt gelagerte Stachelwalze £, welche durch einen zweiten Ausschnitt in der Führung α das Holz fafst, erfolgtA spiked roller £ which is inclined against the stone and which grips the wood through a second cutout in the guide α takes place

dreht letzteres um seine Achse, während die obere waagrecht gelagerte Stachelwalze c durch den mit Gewicht belasteten Hebel d gegen das Holz gedrückt wird und den Vorschub des Holzes gegen den Schleifstein bewirkt.rotates the latter around its axis, while the upper horizontally mounted spiked roller c is pressed against the wood by the weight-loaded lever d and causes the wood to advance against the grindstone.

Der Antrieb der Walzen b und c
durch Räder und Schnecken von dem Kettenrade f aus, welches in Gemeinschaft mit den Kettenrädern f der übrigen Führungen a mittels einer Gliederkette bewegt wird, die ihren Antrieb von der Schleiferwelle erhält.The drive of the rollers b and c
by wheels and worms from the chain wheel f , which is moved in common with the chain wheels f of the other guides a by means of a link chain which receives its drive from the grinder shaft.

Die Führungen α tragen den gesammten Vorschub- und Drehungsmechanismus und sind einzeln in radialer Richtung nachstellbar, um bei Steihabnutzung dem Steinmittel entsprechend genähert werden zu können.The guides α carry the entire feed and rotation mechanism and can be individually adjusted in the radial direction in order to be able to be approached accordingly when the stone is used.

Anstatt wie in Fig. 1 das Holz schräg gegen den Stein zu stellen, kann auch dieser selbst mit kegelförmiger Schleiffläche ausgeführt werden ;' die Hölzer stehen dann senkrecht um den Stein herum (Fig. 3).Instead of placing the wood at an angle against the stone, as in Fig. 1, the stone itself can also be designed with a conical grinding surface; ' the woods are then vertically around the Stone around (Fig. 3).

Oder es können auch die Stirnflächen des Steines als Schleifflächen benutzt werden, und zwar können entweder die Stirnflächen kegelförmig (Fig. 4) oder eben sein und die Hölzer schräg liegen (Fig. 5).Or the end faces of the stone can also be used as grinding surfaces, and Although either the end faces can be conical (Fig. 4) or flat and the woods lie obliquely (Fig. 5).

Bei der Anwendung nach Fig. 4 und 5 entspricht der kleinsten Umfangsgeschwindigkeit des sich drehenden Holzes auch die kleinste Umfangsgeschwindigkeit des Steines, so dafs bei dieser Ausführung das Product am gleichmäfsigsten sein wird.When used according to FIGS. 4 and 5 corresponds to the lowest circumferential speed of the rotating wood also the smallest peripheral speed of the stone, so that with this execution the product will be the most uniform.

Ferner kann bei diesen beiden Ausführungen der Winkel a, den das Holz mit einem nach der Schleifstelle gezogenen Radius bildet (Fig. 6), beliebig gewählt werden, und das Holz sowohlFurthermore, in these two versions, the angle α that the wood forms with a radius drawn towards the grinding point (FIG. 6) can be selected as desired, and both the wood

Claims

in the longitudinal direction of its fiber, as well as across it or diagonally.

The wood is held against the perimeter of the stone in order to create a pure long cut and turned (Fig. 7), but with the aim of grinding grooves in the stone avoid moving the latter in the direction of its axis.

Diagonal sanding using the stone circumference decreases depending on the position of the wood Generate Fig. 8.

The main condition for sanders of this type is the guide a, which is at an acute angle to the sanding path, which guides the wood safely and absorbs the contact pressure.

This guide α can have different cross-sections (Fig. 2). ■

One does not want to bring the wood into contact with the stone with a narrow surface and retain the broader grinding surface with its disadvantages, but such as all of them Grinder from the beginning of wood grinding to the invention of the so-called long grinder (Patent No. 45196, Schmidt), the wood does not need to be turned will. The wood of any length then only needs to be used at a certain angle to be guided against the stone with a guide, so that the wood becomes wedge-shaped grinds off.

The feed is again a steady and can lead trunk to trunk against the stone without having to loosen and lift a press.

The smaller the angle at which the wood is against the grinding surface of the stone is pressed, the more the product will be similar to the current cross-section and the less the unusable sanding of the end grain.

The angle 0. becomes smaller, the longer the sanding surface and the smaller the thickness of the sanding wood is assumed.

Split wood can also be processed on grinders without turning the wood, while the grinder with a turning device round and, if possible, straight sanding wood require.

Fig. Ι a and 2a show as an embodiment for wedge-shaped grinding with a grinder steady advance of the obliquely guided wood against the stone using the stone circumference.

The smooth guide α of the wood can, as Fig. 2a shows, have a round or angular cross-section. The spiked roller b presses the wood against the stone, while the counter roller c, loaded with weight by the lever d, presses the sanding wood against the feed roller b and against the back wall of the guide α directed at an acute angle to the sanding path.

The roller b is again driven by a common chain from the sprocket f by means of a worm.

The entire feed mechanism is located on the guide a, and this can be readjusted in the radial direction in order to be able to follow the wear of the stone. If the stone is designed with a conical grinding surface (Fig. 3a), the wood is vertical.

The end faces of the stone can again be used as grinding surfaces according to FIGS. 4a and 5a and, depending on the choice of angle α (FIG. 6a), long, transverse or diagonal grinding can be produced.

Long or diagonal grinding can be done using the stone's circumference as a grinding surface generate when the wood according to Fig. 7a and 8a is guided against the stone.

Patent claim:

A wood grinding process, characterized in that logs of any length by means of guides directed at an oblique angle to the grinding track for uninterrupted feed be guided at an angle against the grinding surface of the stone at a constant feed rate, either with simultaneous rotation of the wood about its longitudinal axis, so that this Grind the wood in a conical shape, or without turning, so that the wood grinds itself in a wedge shape.

For this purpose 2 sheets of drawings.