The invention relates to a filtering device for filtering a fluid, and in particular a liquefied plastic. The filtering device includes a control unit to control the position of a screen carrier by generating control signals such that the fluid pressure in a fluid inlet channel and/or in a fluid outlet channel remains within definable pressure ranges while a cavity is being filled.

The present disclosure relates to the technical field of adhesion property improvement, particularly to a process and device for improvement treatment of a polyester cord and a rubber adhesive. By filling an extremely few amount of calcined gypsum powders into chloroprene rubber to be secondarily stirred and extruded while adding fatty acid calcium and an anti-aging agent and uniformly mixing a stirring and mixing component using a specific solvent, the adhesion behavior between the rubber adhesive and the polyester cord is increased, and the bonding strength between the rubber adhesive and the polyester cord is improved; furthermore, through mutual connection and installation of the extrusion modification component, stirring and mixing component and the compounding modification component, continuous operation of modification treatment of the polyester cord and the rubber adhesive, the structure is simple, and use is convenient.

The present invention relates to a technical field of 3D printing, and more particularly to a 3D printer spray nozzle structure and a method thereof for controlling speed and precision. According to the present invention, a feeding pipeline is embedded in an external shell, the feeding pipeline and an extruder are coaxially connected; the extruder is driven by a driving device, so as to rotate relative to the feeding pipeline. A rotation angle of the extruder relative to the feeding pipeline is controlled by rotation of a motor, for controlling a filament area actually sprayed by the extrude, in such a manner that printing speed and precision is controlled for suiting different requirements of different printing area. The present invention controls the printing speed and precision, for improving overall printing speed with precision requirements satisfied, and is applicable to 3D printer spray nozzle structure and controlling.

The present disclosure relates to the technical field of adhesion property improvement, particularly to a process and device for improvement treatment of a polyester cord and a rubber adhesive. By filling an extremely few amount of calcined gypsum powders into chloroprene rubber to be secondarily stirred and extruded while adding fatty acid calcium and an anti-aging agent and uniformly mixing a stirring and mixing component using a specific solvent, the adhesion behavior between the rubber adhesive and the polyester cord is increased, and the bonding strength between the rubber adhesive and the polyester cord is improved; furthermore, through mutual connection and installation of the extrusion modification component, stirring and mixing component and the compounding modification component, continuous operation of modification treatment of the polyester cord and the rubber adhesive, the structure is simple, and use is convenient. .

The present invention relates to a technical field of 3D printing, and more particularly to a 3D printer spray nozzle structure and a method thereof for controlling speed and precision. According to the present invention, a feeding pipeline is embedded in an external shell, the feeding pipeline and an extruder are coaxially connected; the extruder is driven by a driving device, so as to rotate relative to the feeding pipeline. A rotation angle of the extruder relative to the feeding pipeline is controlled by rotation of a motor, for controlling a filament area actually sprayed by the extrude, in such a manner that printing speed and precision is controlled for suiting different requirements of different printing area. The present invention controls the printing speed and precision, for improving overall printing speed with precision requirements satisfied, and is applicable to 3D printer spray nozzle structure and controlling.

An extruder for making meat analogue products, where the extruder comprises a product outlet (22), and a longitudinal barrel (8) comprising an inner surface (14) and an outer surface, and where the extruder further comprises heating means for heating at least a part of said inner surface, where said barrel (8) interconnects with said product inlet (5) and outlet (22), where the extruder further comprises a rotor (16) arranged coaxially inside said barrel (8), where said rotor (16) comprises drive means (19) for rotating said rotor (16) in relation to the barrel (8).

A hybrid extrusion press is provided with electric motors and hydraulic assist cylinders to cause a container holder to slide, wherein connecting rods are fastened to a container holder, the hydraulic assist cylinders have piston rods and gate devices connecting or disconnecting the connecting rods and the piston rods, and the gate devices are provided with hollow members fastened to the piston rods, enlarged diameter parts provided at single ends of the connecting rods and moving back and forth inside hollow parts of the hollow members, and locking parts provided at the hollow members and locking the enlarged diameter parts.

An interchangeable unit adapted to couple to a computer numerical control (CNC) machine is disclosed comprising a holder that couples to a spindle of the CNC machine, a controller, wherein said controller is configured to receive the rotational speed of the spindle as an input, and a material processing unit, wherein said material processing unit executes a first function in response to a first rotational speed range of the spindle and executes a second function in response to a second rotational speed range of the spindle.

It is possible to provide a transmission gear system of a multi-screw extruder or kneader, distributedly receiving loads applied on driven shafts without complicating the device configuration. The transmission gear system of a multi-screw extruder or kneader having a plurality of screw shafts, includes a driving shaft to which a driving gear is fixed, rotationally driven by a driving device; a driven shaft to which a driven gear engaged with the driving gear is fixed, the driven shaft being coupled to the screw shaft so as to allow the screw shaft to be rotationally driven and a load distribution shaft disposed in a region opposite to the driving shaft with respect to the driven shaft. A radial load generated on the driven shaft is transmitted via the driven gear and the load distribution gear to the load distribution shaft to distribute the load.

An apparatus changes the temperature of thermoplastic material in an extruder head to reduce the time for producing an object. The apparatus includes a cooling device located near the one or more nozzles of the extruder head to change the temperature of the thermoplastic material extruded by the extruder head. The apparatus cools the thermoplastic material to enhance the formation of exterior object features. A heater can also be positioned near the nozzle zone to heat the thermoplastic material to reduce the time for raising the viscosity of the thermoplastic material for forming interior regions of the object.