摘要:
A barrel main body, a sleeve, and a fixing mechanism (a fastening hole and a fastening device) are provided. The barrel main body includes a barrel hole having a cylindrical shape and a slit dividing an inner circumferential surface of the barrel hole. The sleeve having a hollow cylindrical shape is removably incorporated into the barrel hole. The slit includes two cutout surfaces facing each other with a space between. The fixing mechanism brings the inner circumferential surface of the barrel hole into close contact with the sleeve without any gap by narrowing the space between the cutout surfaces and deforming the barrel main body.
摘要:
A method for producing a twin screw cylinder provided with or having a wear-resistant coating, in which two bores, which extend essentially parallel to each other and overlap each other, are produced in a cylinder and then two liners are inserted into the bores, the liners having an essentially C-shaped cross-section, continuing from each other in the overlapping region of the bores, forming the inner surface of the bores, and serving as a wear-resistant coating. First, a tubular liner is inserted into a first bore and then is cut to form the C-shaped cross-section in accordance with the diameter of the other bore and after this, a second tubular liner is inserted into the second bore and then is cut to form the C-shaped cross-section in accordance with the diameter of the inner surface in the first bore formed by the first liner.
摘要:
A temperature probe, particularly for thermoplastic mix extrusion machines, which comprises at least one casing, which is adapted to be inserted in an extrusion cylinder substantially at right angles to the extrusion direction with one end thereof facing into the internal cavity of the extrusion cylinder so that it is in direct contact with the extrusion material contained in the internal cavity, and at least one thermocouple, which is accommodated in the casing and is adapted to detect the temperature of the extrusion material by thermal conduction through the casing, the temperature probe comprising thermally insulating elements which are interposed at least partially between the casing and the extrusion cylinder so as to reduce the thermal influence of the extrusion cylinder on the measurement made by the thermocouple.
摘要:
An extruder screw includes a screw main body, conveyance portions, barrier portions, and paths. The raw materials, the conveyance of which is limited by the barrier portions, flow in from the entrance. The raw materials flowing in from the entrance flow through the paths in an opposite direction to a conveyance direction of the conveyance portions. The exit is opened in the outer circumferential surface of the screw main body at a position on an upstream side in the conveyance direction in the conveyance portions in which the entrance is opened.
摘要:
The invention relates to an extruder (1) for processing relatively small quantities of pharmaceutical and/or biomedical materials, which extruder (1) comprises an extruder frame (7), a barrel (9, 10), a pair of extruder screws (3), and a drive for rotating the extruder screws (3), wherein the barrel (9, 10) is formed by a pair of separable housing blocks that are positioned in a closed position against each other during processing, each housing block having a barrel liner (13, 15), wherein in the closed position of the pair of separable housing blocks the barrel liners define an interior volume, a feed opening (30), a discharge opening (45) and an opening (31a, 33a) for receiving the pair of extruder screws (3) in the interior volume.
摘要:
Disclosed herein are new injection molding-coating devices for the continuous manufacturing of coated pharmaceutical tablets comprising one or more active pharmaceutical ingredients and one or more excipients. Also disclosed herein are methods for the continuous manufacture of coated pharmaceutical tablets using these new devices for the purpose application in the pharmaceutical and drug manufacturing industries.
摘要:
An extruder screw includes a screw main body, conveyance portions, barrier portions, and paths. The raw materials, the conveyance of which is limited by the barrier portions, flow in from the entrance. The raw materials flowing in from the entrance flow through the paths in an opposite direction to a conveyance direction of the conveyance portions. The exit is opened in the outer circumferential surface of the screw main body at a position on an upstream side in the conveyance direction in the conveyance portions in which the entrance is opened.
摘要:
First screw (11) and second screw (12) each have small diameter portion (17a) having a diameter smaller than that of flight tip (11a, 12a), an axial position of small diameter portion (17a) of first screw (11) being the same as that of second screw (12), the present invention including first screw supporting portion (15a) having first supporting surface (25a) and second supporting surface (25b) that rotatably support small diameter portions (17a) of first screw (11) and second screw (12), and flow path (25c) through which resin material, which is transported by first screw (11) and second screw (12), passes.In the radial direction of first screw (11) and second screw (12), clearance Δ, which is formed between small diameter portion (17a) and each of first supporting surface (25a) and second supporting surface (25b), is equal to or less than the clearance, which is formed between flight tip (11a, 12a) and an inner surface of cylinder (13).
摘要:
A screw machine includes an inductive heating device for the processing of material to be processed. The inductive heating device is used to heat the material in a heating zone. In the heating zone, at least one housing portion is made of an electromagnetically transparent material at least partly, the material being non-magnetic and electrically non-conductive, whereas at least one treatment element shaft is made of an electrically conductive material at least partly. During the processing of the material, the inductive heating device generates an alternating magnetic field that produces eddy current losses in the at least one treatment element shaft, the eddy current losses leading to a temperature increase of the at least one treatment element shaft. The material is heated on the at least one heated treatment element shaft, in particular until it melts. The screw machine allows a simple and efficient melting of the material, with the result that a mechanical energy input and a resulting wear of the screw machine can be reduced significantly.
摘要:
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).