摘要:
There is provided a press machine which can apply a large compression force to a mold as well as impart smooth vibration only in a rectilinear advancing direction to the mold, and thereby can improve the press-formability. A main slide and a sub-slide constitute a slide and at the same time a cylinder-piston mechanism. During press-forming, a compression force is transmitted to the sub-slide (an upper mold) through hydraulic pressure applied interlockingly with driving of the main slide, and the sub-slide is vibrated with the hydraulic pressure being periodically changed. Favorable press-forming can be performed even under relatively difficult press-forming conditions, by controlling the vibration such that a vibration frequency of the sub-slide (the upper mold) becomes 9 Hz or higher but 33.3 Hz or lower and a vibration amplitude of the sub-slide becomes 0.05 mm or larger but 0.5 mm or smaller.
摘要:
An apparatus for vertically moving a ram in a compression molding machine having a ram slidably fitted within an outer cylinder. The ram has a hollow portion which includes an oil reservoir. A piston is slidably fitted within this hollow portion. A source of air pressure is connected to a space between the piston and the top of the hollow portion. As air pressure is applied, the piston will move so as to displace oil from the hollow portion. A pilot check valve is positioned in the ram so as to pass oil into an area between the ram and the outer cylinder.
摘要:
A material handling apparatus is described comprising a material press body having an inlet and an outlet; a power source for generating an airstream into the inlet of the material press body and through the outlet of the material press body, wherein the airstream captures and feeds a supply material into the material press body; a plurality of press augers for capturing and manipulating the supply material into the material handling apparatus; and a drive system connected to drive and control the plurality of augers.
摘要:
The invention shows an apparatus for recycling bituminous material bodies by melting, in particular for recycling bituminous composite material bodies comprising a composite material and a bituminous material, in particular roofing materials, in particular in the form of bituminous covering layers of roofing sheets, the apparatus including: a vessel having a vessel wall surrounding an interior space of the vessel extending along a vertical axis of the vessel for receiving the bituminous material bodies, a bottom plate and a compression plate extending transverse to the vertical axis wherein at least the compression plate has a number of through flow orifices adapted to allow a through flow of molten bituminous material, wherein the plates are movable along the vertical axis such that in a first operating state the compression plate is in a middle position for forming a melting space of larger size between the compression plate and the bottom plate for melting bituminous material in the melting space wherein the bottom plate is in a melting position, in a second operating state the compression plate is in a lower position for forming a compression space of minor size between the compression plate and the bottom plate for compressing solid residues and/or solid composite material in the compression space, and wherein molten bituminous material is retained in a storing space above the compression plate for storing and/or discharging bituminous material, wherein the bottom plate is in a compression position, wherein the compression plate is movable from the middle position to the lower position.
摘要:
The invention shows an apparatus for recycling bituminous material bodies by melting, in particular for recycling bituminous composite material bodies comprising a composite material and a bituminous material, in particular roofing materials, in particular in the form of bituminous covering layers of roofing sheets, the apparatus including: a vessel having a vessel wall surrounding an interior space of the vessel extending along a vertical axis of the vessel for receiving the bituminous material bodies, a bottom plate and a compression plate extending transverse to the vertical axis wherein at least the compression plate has a number of through flow orifices adapted to allow a through flow of molten bituminous material, wherein the plates are movable along the vertical axis such that in a first operating state the compression plate is in a middle position for forming a melting space of larger size between the compression plate and the bottom plate for melting bituminous material in the melting space wherein the bottom plate is in a melting position, in a second operating state the compression plate is in a lower position for forming a compression space of minor size between the compression plate and the bottom plate for compressing solid residues and/or solid composite material in the compression space, and wherein molten bituminous material is retained in a storing space above the compression plate for storing and/or discharging bituminous material, wherein the bottom plate is in a compression position, wherein the compression plate is movable from the middle position to the lower position.
摘要:
For the purpose of pressurizing and holding the pressure in a pressurizing hydraulic cylinder is a hydraulic vulcanizing press, a pneumatic booster (more particularly, a pneumatically operated hydraulic pressure booster) for supplying a desired hydraulic pressure to the hydraulic cylinder is provided in a hydraulic circuit on a pressurizing actuation side of the pressurizing hydraulic cylinder. In addition, in the pneumatic input circuit for the pneumatic booster is provided a switching device for switching a pressurized air fed to the pneumatic booster between a high pressure air for boosting a hydraulic pressure to a desired hydraulic pressure and a low pressure air for holding the desired hydraulic pressure after the desired hydraulic pressure has been attained.