DE78332C

DE78332C - Feed and holding device for strip cutting machines

Info

Publication number: DE78332C
Application number: DENDAT78332D
Authority: DE
Original assignee: J. K. M. Meyer, Hamburg, Hopfenstr. 3
Anticipated expiration: 1913-10-22

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Den Gegenstand der Erfindung bildet eine Streifenschneidmaschine, z. B. zum Schneiden von Corsetstangen u. s. w., bei welcher das Festhalten des zu zerschneidenden Materials und der Vorschub desselben nach erfolgtem Schnitt selbsttätig erfolgen.The subject of the invention is a strip cutting machine, e.g. B. for cutting of corset rods and so on, in which the holding of the material to be cut and the feed of the same take place automatically after the cut.

Fig. ι bis 3 stellen die Streifenschneidmaschine in vorderer, hinterer bezw., seitlicher Ansicht dar. Fig. 4 erläutert die Einrichtung des Prefsbalkens. Fig. 5 zeigt die Bewegungsvorrichtung zum Bethätigen der Vorschubspindel. Fig. 6 bis 9 stellen den von der Vorschubspindel bethätigten Support zum Einspannen des Materials dar.Fig. Ι to 3 represent the strip cutting machine in front, rear and, respectively, side view. Fig. 4 explains the establishment of the Prefsbalkens. Fig. 5 shows the movement device for actuating the feed spindle. Fig. 6 to 9 represent the support activated by the feed spindle for clamping the material represent.

Die auf- und niedergehende Bewegung erhält das an einer federnd gelagerten Gleitbahn α¹ geführte Messer α mittelst der Kurbelstange <z² von einer auf der Antriebswelle £' sitzenden Kurbelsche.ibe b aus. Bei der Umdrehung wirkt die Kurbelscheibe b mit ihrem excentrischen Rande auf die Druckrolle c eines federnd im Maschinengestell geführten Prefsbalkens C ein, derart, dafs sie den Prefsbalken niederdrückt, um das von Neuem weiter vorgeschobene Material auf der Tischplatte T bezw. dem an dieser befestigten Messer t während des Schnittes unverrückbar festzuhalten. Nachdem das über t vorsteh ende Material abgeschnitten ist, geht der Prefsbalken wieder nach oben, um den Vorschub des Materials zu gestatten. Damit auch ungleich dickes Material mit der Maschine zerschnitten werden kann, ist der Prefsbalken auf seiner Druckkante mit besonderen, federnd angebrachten Druckstücken c¹ versehen.The up and down movement is received by the knife α ^{guided on a spring-mounted slideway α 1 by} means of the connecting rod <z ² from a crank disk b seated on the drive shaft £ '. During the rotation, the crank disk b acts with its eccentric edge on the pressure roller c of a resiliently guided Prefsbalkens C in the machine frame, in such a way that it presses the Prefsbalken down in order to move the newly advanced material on the table top T respectively. to hold the attached knife t immovable during the cut. After the material protruding above t has been cut off, the pref beam goes up again to allow the material to be advanced. So that material of unequal thickness can also be cut with the machine, the pressure bar is provided with special, spring-mounted pressure pieces c ¹ on its pressure edge.

Der Vorschub des Materials M erfolgt mit Hülfe eines von einer Vorschubspindel d bethätigten Supports e, in welchen das Material mittelst Federklemmen e¹ eingespannt wird. Das Oeffhen der Federklemmen e¹ kann durch Niederdrücken eines über den Klemmen an-. geordneten Bügels f gleichzeitig bewirkt werden. Der Support e führt sich mit Hülfe geeigneter Führungsrollen e² auf der Maschinenplatte und an besonderen Führungsleisten g, Fig. 7. Die Spindelmutter h des Supports ist getheilt, und die beiden Mutter- -hälften, welche die Vorschubspindel d umschliefsen, sind mit den unteren Enden einer in Form einer Nürnberger Scheere angeordneten Hebelverbindung h¹ verbunden. Ist der Support bis in seine vordere Endstellung vorgerückt, so schieben sich die oberen Enden der Hebelverbindung h¹ auf einen keilförmigen, am vorderen Lagerbock befestigten Ansatz /z². Hierdurch gehen die oberen und unteren Enden der Hebelverbindung h¹ aus einander und rücken die Mutterhälften h, die zweckmäfsig in dem Support e geführt werden, von der Spindel d ab, so dafs der Vorschub des Supports aufhört. Gleichzeitig hiermit drückt ein verstellbarer Anschlag i des Supports gegen den Ausrückhebel i¹, der die Maschine sofort ausrückt. Hierauf schiebt man den Support zurück, spannt neues Material ein, preist durch Zusammendrücken der Hebelverbindung h¹ die Mutterhälften h zusammen und auf die Vorschubspindel d auf und setzt dann die Maschine wieder in Bewegung, um nach Aufarbeiten des Materialstückes die Arbeit zu wiederholen.The feed of the material M takes place with the aid of a support e operated by a feed spindle d , in which the material is clamped by ^{means of spring clips e 1.} The opening of the spring ^{terminals e 1} can be applied by pressing down one of the terminals. ordered bracket f are effected at the same time. The support e guides itself with the aid of suitable guide rollers e ² on the machine plate and on special guide strips g, Fig. 7. The spindle nut h of the support is divided, and the two nut halves that enclose the feed spindle d are with the lower ones Connected ends of a lever connection h ¹ arranged in the form of a Nuremberg pair of scissors. If the support has advanced to its front end position, the upper ends of the lever connection h ¹ slide onto a wedge-shaped attachment / z ² attached to the front bearing block. As a result, the upper and lower ends of the lever connection h ¹ move apart and move the nut halves h, which are expediently guided in the support e , away from the spindle d , so that the advance of the support ceases. At the same time, an adjustable stop i of the support presses against the release lever i ¹ , which immediately releases the machine. Then sliding the support back biases new material a, factored by compressing the linkage h ^1, the nut halves h together and to the feed screw d, and then sets the machine in motion again in order to repeat the work after working-up the piece of material.

Claims

The transmission of the movement from the drive shaft i » ¹ to the feed spindle d is carried out by the following device. The k in the bearing piece mounted feed screw carries a gear d / which m is in engagement with the wheel, the wedge sleeve rotatably seated on the k in slot ¹ adjustable fixed axle η. On the same wedge bushing there is also a ratchet wheel ο, a gear wheel ρ and a star wheel q. Next to the axle bolt η there is a second axle bolt n ^l , which is carried by a fork r, which is also adjustable in the slot A: ¹ by means of pin n ^l. On the fork is an enclosing in ο ο ^ratchet] with compression spring ο ^{2 is} attached. The axle bolt n ^l respectively. the wedge bushing of the same carries in sequence a lifting disk s ^{actuating the pawl o 1} , a cord disk u, a segmented wheel ρ 'and

'the an-a cord u ² connects the cord to a driver q \ on its pin q
rod w driven by the eccentric ν
engages.

■2■ 2

disc u with the cord disc it ¹ on the drive shaft b ¹ .

If the machine is started, the connecting rod w, supported by the cord M ² , which is on the axle pin n ^l respectively. the can of the same seated part ^ ¹ p ¹ z * and s a turning motion. These parts are placed in relation to one another in such a way that first the lifting disk s, by pushing under a shoulder of the pawl o ^1, releases it from the ratchet wheel ο; The driver q ¹ then takes the star wheel q with it and thereby initiates the rotary movement, which is continued and completed by the segment wheel p ¹ engaging in the gear ρ. The rotation that is given to the wheel m and depends on the size of the segment wheel p ¹ and the locking device ο is transmitted from the wheel m to the wheel / and thus to the feed spindle d , which acts on the closed spindle nut h , the support and / or the support. gives the clamped material the desired feed rate.

The adjustability of the axle bolts η and n ^l respectively. The fork r, as well as its U-shaped shape, have the purpose of being able to use change gears m of different sizes, depending on whether this is due to a larger or smaller advance. The driver q ¹ thereby prevented, that he initiates the rotational movement and receiving the first Stofs, the rapid wear of the teeth of the Segmentradesp. ¹ The rope pulley ^{w 2} and the crank device ^{ν wq ä} are intended to complement and support each other in their effect. A reliable transmission of the rotary movement to the axle bushing of the bolt n ¹ could also be achieved by a suitable chain drive in place of the device shown.

Pateντ claim:

A feed and holding device for strip cutting machines, consisting of a pre-beam (C) actuated by the eccentric edge of the knife crank disk (b ) with spring-mounted pressure pieces (c ^l ). for reliably holding material of unequal thickness during the cut and from a material carrier (ee ¹ ), which contains a driver (q ^l ) turned by means of a connecting rod (w) and cord (u " ¹ ) or chain drive, which after triggering a locking device (oo ^} ) by means of ■ lifting disc (s) by pressing the star wheel (q) initiates the rotary movement of the change gear (m) engaging in the gear (I) of the feed spindle (d) , which is continued by the segment gear (p ¹ ) driving the gear (p) and is completed, with the axles carrying the parts (qp ο m) or (q ^x p ^l us) being adjustable in order to enable the engagement of differently sized change gears (m) .

For this purpose 2 sheets of drawings.