41results about How to "Increase extrusion pressure" patented technology

A vacuum extruder for making bricks and tiles is composed of stirring unit, extruding-out unit and a vacuum chamber between them. The stirring shaft passes through said stirring unit, vacuum chamber and extruding-out unit. The stirring teeth in stirring box and vacuum chamber can perform the stirring, feeding and quatitative transmission functions. Its advantages are simple structure and high extruding out effect.

The invention relates to an extruder for a hot melt adhesive rod. A spire propel discharging device (6) is arranged under a hopper (4), wherein, a propel screw is drive jointed with an agitating shaft of the hopper (4); a cooling water circular water jacket of a water inlet (1) and a water outlet (5) are arranged around the spire propel discharging device (6); an extruder (10) with a heating unit is connected with lower part of the spire propel discharging device (6), outer end of an extrude screw (9) of the extruder (10) is drivingly connected with a extruded power unit (7); output of the extruder (10) is connected with the extruder head (12) and output of the extruder head (12) is connected with a cooling water groove (13), and a discharge end of the cooling water groove (13) is in serried connected with a first traction roll (14) and a second traction roll (16). The mixed material is enforcedly pushed into the extruder by the spire propel discharging device under momentum function, so quality and productivity of the hot melt adhesive rod are improved.

The invention relates to the technical field of extrusion molding machining, in particular to an extrusion molding device and method for metal seamless pipes. The device comprises a concave mold; the concave mold comprises blank cavities and pipe extrusion channels which communicate with each other; the device further comprises a pipe core, a supporting assembly and an extrusion device for extruding materials from the blank cavities into the pipe extrusion channels; the supporting assembly is arranged in the blank cavities; the extrusion device is arranged on the supporting assembly in a reciprocating sliding manner; and the pipe core is arranged in the pipe extrusion channels. The device is simple in structure, the operation cost is low, and power provided by a hydraulic press can be used, so that the extrusion device can provide the relatively high extrusion pressure.

The invention provides a compact type control system for a vacuum brick extruding machine. The signal output end of a data collecting module and the signal output end of a manual input module are connected with the signal input end of a central process and control module respectively. The central process and control module outputs a control signal through the signal output end after being processed to control a rotating speed control unit of a motor in the brick extruding machine in an executing module, a rotating speed control unit of a motor of a multi-hopper soil taking machine, a frequency converter of a brick raw material warehouse type feeding machine, a frequency changer of a motor of a double-shaft mixer and a frequency changer of an automatic water-adding motor to conduct corresponding rotating speed adjustment. According to the compact type control system for the vacuum brick extruding machine, automatic control is achieved by designing a computer expert software, a function of automatically improving equipment running rate, reminding, warning and recording is possessed, at the same time, remote control is conducted through the network, the purpose of improving equipment running rate and lowering the consumption is achieved, the quality of a clay lath is comparatively high, the quality of a semi-finished product of a hollow brick is guaranteed, the rejection rate is lowered in the drying and sintering process, and the yield and the quality are improved.

The invention discloses an internal exhaust type parallel counter-rotating multi-screw extruder and relates to extrusion molding equipment using at least two screw rods which are not meshed with each other. The internal exhaust type parallel counter-rotating multi-screw extruder has the advantages of high extrusion pressure, enhanced plasticizing capacity, reduced energy consumption, remarkable energy saving effect, good feeding performance, exhaust performance and material overflowing prevention performance, and convenience in screw machining, and is suitable for various plastic and rubber machining. The internal exhaust type parallel counter-rotating multi-screw extruder is structurally characterized in that the left end of a main screw rod has a hollow structure, the built-in left end is fixed on an inner screw rod on an end cover, the direction of threads on the inner screw rod is opposite to that of threads on the main screw rod, the right end of the main screw rod is internally provided with an exhaust channel which is communicated with an exhaust channel in the inner screw rod, threads on the main screw rod corresponding to an auxiliary screw rod are single threads, other threads on the main screw rod are double threads, a first through hole connected with the exhaust channel is arranged in the main screw rod between two screw arrises of the double threads, a plurality of second through holes are arranged between the two screw arrises of the double threads on the main screw rod outside the inner screw rod, the end cover is provided with a melt outlet communicated with a cavity between the main screw rod and the inner screw rod, and the center of the end cover is provided with an exhaust port connected with the exhaust channel.