DE161396C

DE161396C -

Info

Publication number: DE161396C
Application number: DENDAT161396D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

- JiS 161396 KLASSE 78a. - JiS 161396 CLASS 78a.

Den Gegenstand der Erfindung bildet eine Zündhölzer-Schneidevorrichtung, in welcher nicht, wie bei älteren Maschinen dieser Art, sämtliche Furnierstreifen von einem oder mehreren auf- und niedergehenden Messern auf einmal abgetrennt werden, sondern die Furnierstreifen, welche zwischen den am Zuführungstische in senkrechter Richtung befestigten Fingern gehalten werden, von einem ίο mit einer zwangläufig geführten Rückenplatte verbundenen, seitlich eindringenden Messer durchschnitten werden. Trotz leichterer Bauart der Maschinen werden so Betriebsstörungen vermieden, wie sie durch das stoßartige Arbeiten des gleichzeitig in alle Furnier streifen eindringenden Messers älterer Maschinen veranlaßt wurden. Die abgetrennten Hölzer werden nach dem Schnitt bis zu ihrer Überführung in den Beförderungsrahmen in Führungen gehalten, welche aus den Fingern, dem Messer und der letzteres tragenden Rückenplatte gebildet sind und welche nach dem Zurückgehen der das Messer tragenden Rückenplatte zur Entfernung etwa eingedrungener Fremdkörper leicht zugänglich sind.The subject of the invention is a match cutting device in which not, as with older machines of this type, all veneer strips from one or several rising and falling knives are cut off at once, but the Veneer strips, which are fastened between the on the feed table in a vertical direction Fingers are held by a ίο with a positively guided back plate connected, laterally penetrating knife are cut. Despite the lighter design of the machines are thus avoided breakdowns such as those caused by the jerky Work of the knife of older machines that penetrates all veneer strips at the same time were initiated. The cut pieces of wood are after cutting until they are transferred to the transport frame in Guides held, which from the fingers, the knife and the latter bearing Back plate are formed and which after the return of the carrying the knife The back plate is easily accessible to remove any foreign bodies that may have entered.

In den beiliegenden Zeichnungen zeigen:In the accompanying drawings show:

Fig. ι eine Seitenansicht undFig. Ι a side view and

Fig. 2 eine Endansicht einer mit der Schneidevorrichtung versehenen Maschine.Figure 2 is an end view of a machine provided with the cutting device.

Fig. 3 den Grundriß eines Teiles der Messerantriebvorrichtung,3 shows the plan view of part of the knife drive device,

Fig. 4 einen Schnitt nach Linie 4-4 der Fig. 2,Fig. 4 is a section along line 4-4 of Fig. 2,

Fig. 5 eine schaubildliche Ansicht eines Teiles der Abschneidevorrichtung,5 is a perspective view of part of the cutting device,

Fig. 6 einen Schnitt nach Linie 7-7 der Fig. 4.FIG. 6 shows a section along line 7-7 in FIG. 4.

Fig. 7 die obere Ansicht des Schnittmessers und seiner Führungsplatte,7 shows the top view of the cutting knife and its guide plate,

Fig. 8 eine besondere Ausführungsform der Abschneidevorrichtung mit zwei Messern.8 shows a particular embodiment of the cutting device with two knives.

Das Gestell der mit der neuen Abschneidevorrichtung versehenen Maschine besteht aus den Seitenteilen 10 mit ihren Auslegern 11 und den Ständern 12. Die in den Seitenteilen 10 gelagerte Welle 13 ist mit Fest- und Losscheiben 13" versehen und ihre Bewegung wird in beliebiger Weise auf die Welle 14 übertragen, deren Bewegungwiederum mittels der Kegelräder 15, 16 auf die an ihrem äußeren Ende in einem Hänger ι J" gelagerten Welle 17 übertragen wird. Die auf dem äußeren Ende der Welle 17 sitzende Kurbelscheibe 18 überträgt mit Hilfe der Pleuelstange 19 ihre Bewegung auf den an der Scheibe 21 der Welle 22 einstellbar befestigten Arm 20 derart, daß dieser eine schwingende Bewegung ausführt. Die Welle 22 ist in den Lagerrahmen 23, 24, sowie in dem Ständer 25 gelagert und trägt an dem anderen Ende eine zweite Scheibe 26 (Fig. 1), an welcher der lange Arm 27 einstellbar befestigt ist. Dessen oberes Ende trägt ein Gelenkstück 28, das an dem mittels einer Rippe 31 in einem Rahmen 35 (Fig. 2, 4 und 5) gleitenden, mit der Platte 30 aus einem Stück bestehenden Messer 29 drehbar befestigt ist. Der mittels Arme 37 an den Ständern 12 befestigte Rahmen 35 besitzt einen Schlitz 36, damit man nötigenfalls zu den zwischen den Fingern 33 (Fig. 5) liegenden Hölzchen gelangen kann. Das in der beschriebenen Weise angetriebene und geführte Messer tritt durch einen der Ständer 12 und führt seine hin- und hergehende Be-The frame of the machine provided with the new cutting device consists of the side parts 10 with their arms 11 and the uprights 12. The shaft 13 mounted in the side parts 10 is provided with fixed and loose disks 13 "and its movement is controlled in any way on the shaft 14, the movement of which is in turn transmitted by means of the bevel gears 15, 16 to the shaft 17 mounted at its outer end in a hanger ι J ″. The crank disk 18, which is seated on the outer end of the shaft 17, transmits its movement to the arm 20, which is adjustably fastened to the disk 21 of the shaft 22, with the aid of the connecting rod 19, in such a way that the arm 20 executes an oscillating movement. The shaft 22 is mounted in the bearing frame 23, 24 and in the stand 25 and at the other end carries a second disk 26 (FIG. 1) to which the long arm 27 is adjustably attached. Its upper end carries a joint piece 28 which is rotatably fastened to the knife 29, which is made of one piece with the plate 30 and slides in a frame 35 (FIGS. 2, 4 and 5) by means of a rib 31. The frame 35, which is fastened to the uprights 12 by means of arms 37, has a slot 36 so that, if necessary, the small pieces of wood lying between the fingers 33 (FIG. 5) can be reached. The knife, which is driven and guided in the manner described, passes through one of the stands 12 and carries out its to-and-fro movement

Claims

movement transversely to the longitudinal direction of the machine.

On the table 32 guide strips 32 ″ (FIG. 4) are arranged around which the material for the sticks supplying veneer strips to hold vertically, which in any Way can be advanced at the appropriate moments. In the present case, soft rubber covers 80, 81 provided food rolls 78, 79 selected.

. The end of the table 32 facing the knife 29 carries a sturdy bar on which vertically standing fingers 33 are arranged so that they are ^{exactly opposite the guide strips 32 s} , and that the gaps between the fingers 33 hold the veneer strips between them during feed be able to record. The feed of the veneer strips is now so

ao regulates that its outer edge protruding between the guide strips 32 ^ only protrudes until it is level with the outside of the fingers 33, whereupon the veneer strips come to rest. As soon as this point in time occurs, the free end of the guide plate 30 advances so that when the cutting edge of the knife moving in the horizontal direction penetrates the first veneer strip to cut off a stick parallel to the grain of the veneer strip, the cut stick out of the now on all four sides limited gap cannot escape. Since the knife edge passes hard on the back of the fingers 33, the veneer strips have no opportunity to bend or move under the action of the knife. An extremely smooth cut is therefore achieved, even if the fibers of the veneer strip are somewhat curved, in contrast to machines in which the sticks are cut off by the knife in the manner of a plane. A smooth cut is as good as impossible with these, because the thin veneer strips simply tear open when the knife penetrates in front of the cutting edge, so that the small pieces of wood in question are split and are therefore of inferior quality. The same process that takes place on the first veneer strip is now repeated when the knife 29 passes through each of the other veneer strips, so that when the knife has reached the end of its movement, all the gaps 34 between the fingers 33 are filled with sticks, which, before the return of the knife and its guide plate, are pressed in the following manner into the conveyor frame 6j sliding on tracks 70 below the table 32.

On both sides of the machine 14 cams 44 are arranged on the shaft, The rollers 43 of the push rods 42 run in their grooves. The upper ends of the rods 42 are connected to the cross arm 39, to which the bumpers 38 are fastened by means of the plate 40 (FIG. 4) and the screws 41. Each of the bumpers 38 is of course attached so that its free end with the upper end of the stick held in one of the gaps 34 can come into contact. If the push rods 42 are now pulled down, press the bumpers down the little pieces of wood sitting under them in the gaps 34 until their lower end between the bars 68 of the transport framework occurs; the bumpers are then returned to their initial position and the frame 67 by means of the wheels 60, 62 which reach over the rods 68 shifted by one division. At the same time, the knife 29 and its guide plate 30 returned to the initial position, so that the advance of the veneer strips take place can.

In Fig. 8, a particular embodiment of the cutting device is shown in which two knives 94 which point from opposite sides in the middle meet, are provided. These knives are moved by the planers 95 and 96, which are connected to the Crank disk 97, which runs on the shaft 98, are in connection. The disk 97 receives their reciprocating movement by a roller 99, which is arranged at the end of an arm and in the groove of a Cam 100 is performed.

Pate ν τ-Α ν SPRU c η:

Match cutting device, characterized in that the veneer strips held between the vertical fingers (33) attached to the feed table (32) and inevitably by one with one guided back plate (30) connected, laterally penetrating knife (29) are cut so that the Timbers after cutting are held in guides until they are transferred to the transport frame (67, 68), which consists of the fingers (33), the knife (29) and the latter supporting back plate (30) are formed.

1 sheet of drawings.