摘要:
The invention relates to a method for adjusting the position of a mandrel (10), which is situated in a hydraulic punch consisting of a cylinder and a ram that form a mandrel cylinder (8), in an extrusion press for producing pipes (2), which are extruded from blocks (4) that are loaded into a receiving device (5) situated upstream of the extrusion press (3) and are punched using the mandrel (10). The invention is characterised in that the mandrel cylinder (8) is driven directly by pumps (11), which are set for a pre-calculated throughput that is dependent on the press speed, and that an additional throughput is added to the pre-calculated pump throughput. To adjust the position of the mandrel (10), a control valve (16) that acts on the ring side (12) of the mandrel (8) is connected to a tank (17).
摘要:
In a method for blowing out and/or for spraying dies (3, 5), arranged at the top and/or bottom, of forging presses, in particular drop forging presses, comprising automatic workpiece transport by means of a transport lifting beam (8) provided with gripping devices (9) and comprising a mechanical blow-out and spray device (11; 10) which is introduced into the tool space (1) of the forging press and is withdrawn again from the latter, a spray lifting beam (11) provided with spray devices (10) is moved into the tool space (1) synchronously with the lifting and removal movement of the transport lifting beam (8), but independently of the latter, while the transport lifting beam (8) lifts a workpiece (6) produced in a preceding forging operation and removes it from the tool space (1), wherein the spray devices (10) are actuated within the tool space and the forging dies (3, 5) are lubricated and/or cooled close to the contour. An apparatus used for this purpose is distinguished by the fact that a separate spray lifting beam (11) formed with spray devices (10) that can be actuated temporarily is assigned to the transport lifting beam (8), wherein the drives of the two lifting beams (8; 11) are synchronized with opposed sequences of movement via an automatic lifting beam mechanism and the lifting beams (8; 11) are connected for their activation to a common open-loop and closed-loop control device (12).
摘要:
A metal extrusion press has a pair of fixed crossheads spaced along a press axis from each other and a plurality of elongated upper and lower members extending axially between and rigidly connected to the crossheads. Each member includes a rod axially tensioned between the crossheads and a beam axially compressed between the crossheads. A movable crosshead is between the fixed crossheads, and a container is between the movable crosshead and one of the fixed crossheads. Respective crosshead and container guide units support the movable crosshead and container on the members and engage around the members. Rollers are engaged between each of the guide units and the members.
摘要:
A coupling has a low-torque/high-slip clutch connected between a drive output and an input constituted by a press, shear, or stamper, and a high-torque/low-slip clutch also connected between the output and the input. In a startup phase the low-torque/high-slip clutch is engaged and the high-torque/low-slip clutch is disengaged to bring the load input up to a predetermined rotary threshold speed. Thereafter in a working phase the low-torque/high-slip clutch is disengaged and the high-torque/low-slip clutch is engaged to drive the load at a rotary speed at least equal to the rotary threshold speed.
摘要:
A coupling apparatus has a stationary housing and a pair of parts inside the housing and rotatable about a common axis. One of the parts normally rotates continuously. Coupling elements between the parts are engageable together to rotationally couple the parts to each other and are separable for free relative rotation of the parts relative to each other. A row of teeth on the one part mesh with a drive pinion of a pump mounted on the housing for circulating coolant and lubricating oil through the coupling elements.
摘要:
The invention relates to an extruder and pipe extruder (1), comprising a press frame (3) consisting of a cylinder bar and a counter bar (2) connected thereto, wherein a linear displaceable receiver carriage (5) is arranged, said carriage consisting of a receiver holder (6) which concentrically encompasses a block receiving element (7) and transports a block, which is charged with a charging device and which is to be pressed in a press position in front of a die associated with the counter bar (2), wherein the receiver holder (6) is maintained therein in a self-supporting manner in relation to the receiver carriage by means of air (2). The receiver holder (6) is provided with carrier webs (13) which are arranged on two sides in the middle of the press (12) and which project in a diametrically outward manner, being suspended in the recesses (14) of retaining blocks (15) of the receiver carriage (5).
摘要:
Disclosed is an extruding press (1) for billets and tubes, comprising a press frame (2) which is composed of a cylinder-type bar (3) and an opposite bar (6) that is connected thereto. A movable running bar (6) and a movable receiving device (7) are disposed within said press frame (2), the receiving device (7) displacing a block (9) that is introduced with the aid of a charging apparatus and is to be pressed in front of the opposite bar (5) encompassing a matrix. A multifunctional robot (12) which can be moved on a linear guide (11), acts independently of the movements of the press, and is equipped with a receptacle head (13) is assigned to the press frame.
摘要:
The invention relates to a method for extruding curved extruded profiles. The extruded profile (9) is formed in a matrix (4) mounted upstream in a counter beam (6) of an extruder system (1) and is subsequently curved or bent due to the effect of external forces and separated, supported and arranged into partial lengths in the extrusion flow by means of a separating robot connected to a higher control mechanism (12) and is discharged to a storage area (15) with the aid of a handling robot. The handling robot (14) is coupled to the separating robot (10) by means of the control mechanism (12) and, like said separating robot, is moved into a starting position in front of an extrusion press (1), wherein it assumes a maintenance position downstream from the separating robot (10), whereupon it moves together with the separating robot (10) into a final separating position (13) in a synchronous manner with respect to the beginning of the separating process, whereupon it supports and assumes the pressed extruded profile section (9) following the predetermined pressway thereof, whereupon the separating robot (10) returns to its original position for renewed synchronisation with the pressed extruded profile (9) and the handling robot (14) transports the separated partial length, deposits it (15) and subsequently returns to its maintenance position. A handling robot (14) is arranged downstream from the separating robot (13) in such a way that it covers the working area from at least the final separating position (13) to a depositing device (15). Said handling robot (14) comprises means (17) used to support a separated partial length of the extruded profile section.
摘要:
Wire rings or coils in tubs pass from a cooling conveyor onto a rotatable framework in which the tub carrier can be raised toward a transfer conveyor. The framework is then tilted to deposit the wire ring on the transfer conveyor, whereupon the tub is raised to liberate the wire ring which is displaced onto a conveyor for a subsequent processing station. The framework is rotated again through 180.degree. to align the empty tub with the return conveyor.
摘要:
A press cylinder for an extrusion press having a cylinder beam has a cylinder housing fixed on the beam and a piston shiftable along an axis in opposite forward and rearward directions in the housing and defining with a rear end of the housing a pressurizable cylinder chamber. A rod projecting axially rearwardly through the rear wall of the housing is formed with an axially extending bore. A connection block is fixed on the housing rearward of the piston. An axially extending tube in the bore fixed to the block is surrounded by an axially extending sleeve forming with the tube an annular gap, forming with an inner surface of the bore an annular compartment, and also fixed to the block. This is formed with respective passages opening into the tube and into the annular gap.