AT91177B - Sheet feeder for rotary printing presses. - Google Patents

Sheet feeder for rotary printing presses.

Info

Publication number
AT91177B
AT91177B AT91177DA AT91177B AT 91177 B AT91177 B AT 91177B AT 91177D A AT91177D A AT 91177DA AT 91177 B AT91177 B AT 91177B
Authority
AT
Austria
Prior art keywords
sheet
rotary printing
sheet feeder
printing presses
feed rollers
Prior art date
Application number
Other languages
German (de)
Original Assignee
Automatic Printing Machines Ld
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Automatic Printing Machines Ld filed Critical Automatic Printing Machines Ld
Application granted granted Critical
Publication of AT91177B publication Critical patent/AT91177B/en

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  • Delivering By Means Of Belts And Rollers (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Bogenanleger für   Rotationsdruckpressell.   
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 so dass infolge des Voreilens des Bogens in der bei selbsttätigen Pressen bekannten Weise das Register genau eingehalten wird. 



   Nach vorliegender Erfindung stehen die oberen und unteren Anlegerollen ebenso wie der Bogen in dem Augenblick still, wo letzterer von den ersteren erfasst wird, wodurch jede Verschiebung des Bogens 
 EMI2.2 
 des Bogens können innerhalb weiter Grenzen abgeändert werden. Nach der Zeichnung ist die den Zahnbogen betätigende Kurvennut 4 so gestaltet, dass der Zahnbogen eine merkliche Zeit stillsteht, trotzdem das   Rad 3 ununterbrochen fortläuft. Durch die Wirkung   der   Kurvennut auf   den Zahnbogen werden 
 EMI2.3 
 Rolle aus der innersten Stellung in die in Fig. 4 angedeutete beendigt haben.

   Während des Stillstandes der Rolle 7 läuft die Rolle 23 des Armes 22 auf den Teil vom kleinsten Halbmesser des   Daumens S4 auf,   wodurch die auf die Hebel 17 wirkenden Federn 19 die unteren   Anlegerollen heben und   der Bogen 
 EMI2.4 
 Mitte der Strecke N, Y der Kurvennut 4 gelangt ; ist sie am   Ende dieser Strecke (Fig. 6), so hat   der Daumen   36   eben den Arm 34 gehoben, wodurch die Stifte 28   ausgeriiekt   werden und der Bogen bereit ist, zum   Dmckzylinder zu   gehen, wenn die Rolle 37 in den folgenden Teil der   Kurvennut   4 gelangt. 



  Sobald der Bogen die Anschläge am Drackzylinder überholt hat und   der erforderliche Vorschub bewerk-   
 EMI2.5 
 geteilt oder anderweitig regelbar gemacht, so dass die anlegerollen gerade dann a seinander weichen können, wenn der Rand des Bogens eben die   Führungen   erreicht, oder früher oder später, wie es eben gewiinseht 
 EMI2.6 
 beim Erfassen des Bogens etwas über die Ebene des Tisches empor. Bei der beschriebenen   Abänderung   der Anlegerollen ist keine einleitende Bewegung derselben notwendig, um die Anlegerollen in die richtige Stellung zu bringen, bevor sie den Bogen erfassen. Auch die Kurvennut   4'hat   eine zur Achse konzentrische Stelle. 



   Mit Hilfe der vorliegenden Erfindung wird jede Gefahr einer Verschiebung oder Zerknitterung des Bogens beim Erfassen desselben durch die Anlegerollen vermieden und ausserordentliche Sorgfalt beim Einstellen der Anlegerollen entbehrlich gemacht.



   <Desc / Clms Page number 1>
 



  Sheet feeder for rotary printing presses.
 EMI1.1
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 so that as a result of the sheet advancing in the manner known from automatic presses, the register is precisely maintained.



   According to the present invention, the upper and lower feed rollers, as well as the sheet, come to a standstill at the moment when the latter is caught by the former, whereby any displacement of the sheet
 EMI2.2
 of the arc can be modified within wide limits. According to the drawing, the curved groove 4 which actuates the dental arch is designed in such a way that the dental arch stands still for a noticeable time, despite the fact that the wheel 3 continues to run without interruption. Due to the action of the cam groove on the dental arch
 EMI2.3
 Have completed role from the innermost position in the indicated in Fig. 4.

   During the standstill of the roller 7, the roller 23 of the arm 22 runs on the part of the smallest radius of the thumb S4, whereby the springs 19 acting on the lever 17 raise the lower feed rollers and the arch
 EMI2.4
 The curve groove 4 reaches the middle of the line N, Y; when it is at the end of this distance (Fig. 6), the thumb 36 has just raised the arm 34, whereby the pins 28 are disengaged and the sheet is ready to go to the printing cylinder when the roller 37 is in the following part of the cam groove 4 arrives.



  As soon as the sheet has overtaken the stops on the printing cylinder and the required feed is achieved
 EMI2.5
 divided or made otherwise controllable, so that the feed rollers can give way to each other just when the edge of the sheet just reaches the guides, or sooner or later, as it happens
 EMI2.6
 when grasping the sheet a little above the level of the table. In the described modification of the feed rollers, no initial movement of the same is necessary in order to bring the feed rollers into the correct position before they grasp the sheet. The cam groove 4 'also has a point concentric to the axis.



   With the help of the present invention, any risk of displacement or crumpling of the sheet when it is gripped by the feed rollers is avoided and extreme care when setting the feed rollers is dispensed with.

 

Claims (1)

PATENT-ANSPRUCH : EMI2.7 PATENT CLAIM: EMI2.7
AT91177D 1915-08-06 1916-08-10 Sheet feeder for rotary printing presses. AT91177B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91177XA 1915-08-06 1915-08-06

Publications (1)

Publication Number Publication Date
AT91177B true AT91177B (en) 1923-02-10

Family

ID=21735674

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91177D AT91177B (en) 1915-08-06 1916-08-10 Sheet feeder for rotary printing presses.

Country Status (1)

Country Link
AT (1) AT91177B (en)

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