DE38347C - Stroke limitation for hydraulic shears - Google Patents

Stroke limitation for hydraulic shears

Info

Publication number
DE38347C
DE38347C DENDAT38347D DE38347DA DE38347C DE 38347 C DE38347 C DE 38347C DE NDAT38347 D DENDAT38347 D DE NDAT38347D DE 38347D A DE38347D A DE 38347DA DE 38347 C DE38347 C DE 38347C
Authority
DE
Germany
Prior art keywords
hydraulic shears
knife
stroke limitation
valve
shears
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DENDAT38347D
Other languages
German (de)
Original Assignee
kalker werkzeugmaschinenfabrik L. W. Breuer, Schumacher & Co. in Kalk bei Köln a. Rh
Publication of DE38347C publication Critical patent/DE38347C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/12Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
    • B23D15/14Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)
  • Shearing Machines (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Wird bei einer gewöhnlichen Scheere mit Excenter oder Hebelbewegung ein Schnitt durch einen zu trennenden Stab ausgeführt, so wird dabei das nach dem Untermesser bewegte Obermesser nach vollendetem Schnitt direct von derselben Kraft wieder zurück in seine Anfangsstellung bewegt. Anders ist dies jedoch bei Scheeren mit einseitig wirkendem hohen hydraulischen oder Dampfdruck. Hier wird immer, da der Druck bis zum letzten Moment des Abscheerens gleich hoch bleibt, ein weiteres Vorwärtsgehen des Obermessers über die Schnittgrenze stattfinden.A cut is made with ordinary scissors with an eccentric or lever movement carried out by a rod to be separated, so that moved after the lower knife After the cut has been completed, the upper knife is directly moved back to its starting position by the same force. This is different however, for shears with unidirectional high hydraulic or steam pressure. here will always, since the pressure remains the same until the last moment of shearing, the upper knife can move forward further over the cutting boundary.

Um dieses zu verhindern und den Messerhalter zu zwingen, genau auf einer vorher einstellbaren Stelle stehen zu bleiben, dient die auf der Zeichnung dargestellte Neuerung. In die Leitung A des Druckwassers nach dem Druckcylinder B wird ein Ventil eingeschaltet, welches die Leitung abschliefst, sobald das bewegte Messer auf einem bestimmten Punkte angekommen ist.To prevent this and to force the knife holder to stop exactly at a previously adjustable position, the innovation shown in the drawing is used. In line A of the pressurized water after pressure cylinder B , a valve is switched on, which closes the line as soon as the moving knife has reached a certain point.

Zu diesem Zwecke wird das Ventil α durch eine Steuerung bewegt, welche von der Bewegung des Obermessers abhängig ist. Es hält zunächst eine Feder b das Ventil α geöffnet, während ein Hebel c, sobald er gegen die Richtung des Federdruckes bewegt wird, das Ventil schliefst. Dieses geschieht nun bei jedem Schnitt dadurch, dafs eine mit dem Messerhalter d verbundene Zugstange e mit einem einstellbaren Knaggen / den Hebel c beim Vorwärtsgehen fafst, gegen die Feder drückt und somit das Ventil bezw. die Zuleitung des Druckwassers schliefst.For this purpose, the valve α is moved by a control which is dependent on the movement of the upper cutter. A spring b initially holds the valve α open, while a lever c, as soon as it is moved against the direction of the spring pressure, closes the valve. This happens with each cut in that a pull rod e connected to the knife holder d with an adjustable catch / lever c grips when walking forward, presses against the spring and thus the valve resp. the supply line for the pressurized water closes.

Claims (1)

PaTENT-ANSPRDCH :PATENT CLAIM: Bei hydraulischen Scheeren mit einseitigem hohen Druck die Anordnung eines Ventils in der Druckwasserleitung, welches selbstthätig geschlossen wird, sobald das bewegte Messer an einem bestimmten Punkte angekommen ist, infolge dessen der Wasserzuflufs abgeschlossen und der Hub des Messers begrenzt wird.In hydraulic shears with one-sided high pressure, the arrangement of a valve in the pressurized water line, which is automatically closed as soon as the knife moves has arrived at a certain point, as a result of which the water inflow is closed and the stroke of the knife is limited.
DENDAT38347D Stroke limitation for hydraulic shears Expired - Lifetime DE38347C (en)

Publications (1)

Publication Number Publication Date
DE38347C true DE38347C (en)

Family

ID=314054

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT38347D Expired - Lifetime DE38347C (en) Stroke limitation for hydraulic shears

Country Status (1)

Country Link
DE (1) DE38347C (en)

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