A device for producing a dyed plastic melt and an undyed plastic melt includes a multi-shaft screw extruder, a first metering installation, a second metering installation, and a control installation for selecting between a first operating mode for producing the dyed plastic melt and a second operating mode for producing the undyed plastic melt. The first metering installation serves for feeding an undyed plastic material through a first infeed opening into a housing of the multi-shaft screw extruder, and the second metering installation serves for feeding at least one dyeing agent through a second infeed opening into the housing. In order for the undyed plastic melt to be produced, the plastic material is fed exclusively via the first infeed opening such that residual dyeing agent which is still located in the second metering installation or in the region of the second infeed opening does not contaminate the undyed plastic melt.

The invention relates to a method for the indirect determination of a specific formulation with an extrusion process in an extrusion device (10) comprising the following steps: determination of measurement data of at least one processing parameter of the extrusion process of the extrusion device (10), comparing the determined measurement data with saved data saved in relation to the specific formulation of the same processing parameter, determination of the deviation of the measurement data from the saved data of the same processing parameters and comparing of the deviation with a predefined deviation threshold.

An assembly for use in an additive manufacturing system to print a three-dimensional part that includes an extruder comprising a gear and a motor that turns the gear, wherein rotation of the gear regulates a flow of material out of the extruder. A controller, provides a control signal to the motor to control the rate at which the motor turns the at least one gear and incorporates a time-varying signal into the control signal to reduce ripples in the material output by the extruder.

A computer program causing a computer to execute processing of detecting an abnormality of an industrial machine having a movable part is provided. The computer executes the processing oft acquiring physical quantity data on a time-series basis output from a sensor detecting a physical quantity related to a motion of the movable part; converting the physical quantity data on a time-series basis acquired to a time-series data image representing the physical quantity data; inputting the time-series data image converted to a learning model to calculate a feature of the time-series data image, the learning model being trained with a feature of the time-series data image related to the movable part in a normal condition; and determining a presence or an absence of an abnormality of the industrial machine based on the calculated feature.

A nozzle, a tundish arrangement used for the production of granulated material, and a method and apparatus for the production of a granulated material with an improved size distribution are provided. The grain size and grain size distribution is controlled by a nozzle having a specific design. The nozzle comprises an upper inlet opening, sidewalls forming a channel, a bottom and at least one outlet opening or at least one row of outlet openings at the lower end of the channel. The outlet opening(s) in the channel have a size of at least 5 mm in the smallest dimension. A cross sectional area of the channel at the inlet A.sub.C is at least 3 times bigger than the total area of the outlet openings A.sub.T.

A method of manufacturing a tire tread includes extruding a rubber strip and conveying the rubber strip through an opening of a roller die. The opening is defined by an upper die and a lower die, wherein the upper die and lower die contact the rubber strip and define a cross-section of the rubber strip as the rubber strip is conveyed through the opening. The method also includes adjusting a distance between the upper die and the lower die as the rubber strip is conveyed through the opening. The method further includes applying the rubber strip from the roller die onto a receptacle that rotates about a receptacle axis. The method also includes translating the roller die in a first direction parallel to the receptacle axis while applying the rubber strip, thereby forming a spiral of the rubber strip about the receptacle.

A liquefier assembly (20) for use in an additive manufacturing system (10) to print three-dimensional parts (22), which includes an upstream pressure-generating stage (52) and downstream flow-regulating stage (52). The upstream pressure-generating stage (52) includes a drive mechanism (46), a liquefier configured (52) to melt a consumable material (48) receive from the drive mechanism (46) to produce a molten material in a pressurized state. The downstream flow-regulating stage (52) includes a gear assembly (52) having a casing assembly (64,66,68) and a pair of gears (74,76) disposed within the interior cavity (78,80) and engaged with each other to regulate a flow of the pressurized molten material (48) through the gear assembly (52) for controlled extrusion.

A method and system for optimizing a match between the color of an in-line part manufactured by a plastic product production machine and the color of a reference part by adjusting the concentration of masterbatch in the mixture of raw material fed to the plastic product production machine. The optimization of the color is based on spectra of the in-line part and reference part obtained within a short time interval using the same spectrometer, thereby eliminating the requirement for high accuracy spectrometer calibration and allowing the method, which determines the rates at which the base masterbatches are added to the raw material, to be carried out in real time on the manufacturing floor while the plastic product production machine is being operated to manufacture in-line parts.

A method of cleaning a powder coating production line, the method including: providing a powder coating production line including equipment, an automatic cleaning tool, and a monitoring device; receiving, by the equipment, an instruction of automatic cleaning, and allowing the equipment to enter an automatic cleaning mode; cleaning, by the automatic cleaning tool, the equipment of the powder coating production line; monitoring, according to a preset monitoring condition and by the monitoring device, whether the automatic cleaning is completed; stopping the automatic cleaning when the monitoring device indicates the automatic cleaning has been completed, or continuing the automatic cleaning of the equipment; and turning off the automatic cleaning mode of the equipment.

Disclosed is a system for optimizing a match between the color of an in-line part manufactured by a plastic product production machine and the color of a reference part by adjusting the concentration of masterbatch in the mixture of raw material fed to the plastic product production machine. The optimization of the color is based on interlaced spectra of the in-line part and reference part obtained using the same spectrometer, thereby eliminating the requirement for high accuracy spectrometer calibration and allowing a controller of the system to determine the rates at which the base masterbatches are added to the raw material in real time on the manufacturing floor while the plastic product production machine is being operated to manufacture in-line parts.