A mechanical lower forging extrusion and ejecting device for a forging mechanical press

Abstract

A mechanical lower forging extrusion and material ejection device of a forging mechanical press comprises a crank shaft arranged on a machine body; one end of the crank shaft penetrates through the machine body and is provided with an eccentric sleeve; a connection rod is installed on the eccentric sleeve, an upper pull rod is hinged to the lower end of the connection rod, and the lower end of the upper pull rod is connected with a lower pull rod through a belleville spring; the lower end of the lower pull rod is hinged to one end of a lever; the upper pull rod and the lower pull rod are installed on a bracket, and the bracket is connected with the machine body; a long hole is formed in the middle of the lever and internally provided with a third pin shaft, and the third pin shaft is arranged on a support fixedly connected with the bottom of the machine body; and the other end of the lever is provided with a rolling wheel making contact with the bottom of a material ejection seat, an ejection plate is arranged at the upper end of the material ejection seat, the two sides of the ejection plate are provided with air cylinders correspondingly, and a plurality of upper ejection rods are arranged at the upper end of the ejection plate and are installed in a workbench. The mechanical lower forging extrusion and material ejection device has the advantages of having a synchronous forging extrusion function or a drawing function or a asynchronous ejection function, and being diversified in purpose, adjustable in lower forging extrusion force or ejection force, capable of preventing overload, long in service life, high in product quality and the like.

Description

Technical field: [0001] The invention relates to the technical field of forging machine tools, in particular to a mechanical lower forging extrusion and ejecting device of a forging machine press. Background technique: [0002] The lower jacking device is one of the main components of the mechanical press. At present, most of the lower ejecting devices of forging presses on the market are cam type, and there are also a few pneumatic types. The above two lower ejector devices are mainly used for forging of forging machinery presses and ejection of forged parts. They have the characteristics of high-quality ejection, easy clamping of parts and automatic production. The above characteristics become the main functional requirements of forging machinery presses. [0003] But now, with the rapid development of the manufacturing industry and fierce market competition, manufacturing companies have put forward higher requirements for the purchased equipment-meeting complex processes...

AI Technical Summary

Problems solved by technology

The above-mentioned mechanism converts force too many times (up to 3 times), the energy loss is large, the structure is more complicated, and the manufacturing cost is high; and after the cam-type mechanical lowering device and the ejection are completed, the impact is large when resetting, and the cam, resetting The spring wears quickly, the upper swing rod is easy to wear, break, and the cam is stuck, and the maintenance cost is high, which increases the production cost and reduces the production efficiency, which does not meet the current manufacturing enterprises' requirements for green and energy-saving production.

The most important thing is that when the forging (multi-station) mechanical press needs to exceed the nominal force by more than 30% of the lower forging extrusion or tensile force requirements before lowering and ejecting, the cam-type mechanical lowering and ejecting device cannot be realized; and the cam The mechanical lower ejecting device cannot adjust the ejecting force of the mechanical ejector, which may easily cause overload and cause damage to the machine tool and forgings

[0004] like image 3 As shown in the figure, the pneumatic lower ejecting device hangs the cylinder under the base, the piston rod is directly connected with the ejector rod, and directly ejects the material through the movement of the cylinder. The mechanism is simple in structure and reliable in operation, but the ejection force is relatively small It is used to eject the parts from the mold after the parts are stamped, which cannot meet the requirements of forging and extrusion work

At present, it is only used on a small number of small mechanical presses that do not require high material ejection force.

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