The present invention involves a fabrication of plastic-tube-screen-fill (PTSF) injection mold fabricating PTSFs using molten plastics injection molding machine. The PTSFs replace PVC-film-fills currently using in water evaporative cooling towers. The PTSFs have a higher water cooling efficiency compared to the efficiency of the PVC-film-fills and therefore the PTSFs reduce the operation and construction expenses of the cooling tower, and also the PTSFs reduce the production of plastic wastes due to the utilizing of high cooling efficient media in the cooling towers. In order to commercialize the PTSFs, a manufacturing tool of the PTSFs to fabricate a low-cost plastic-tube-screen-fill is needed. To achieve this end, the PTSF injection mold is invented by comprising four partial-molds, which is operated in three dimensional disassembling and reassembling processes using a vertical injection molding machine.

A tool for injection molding plastic parts includes a static overall frame and two structural units for forming a cavity. One of the structural units is arranged displaceably relative to the overall frame and the other structural unit in order to remove an injection-molded part from the cavity. The static overall frame is formed by at least two frame units, in particular a first ejector-side tool element and a second nozzle-side tool element, which are displaceable relative to one another, but in the production mode are displaceable within the scope of the elasticity, which is preferably less than a millimeter.

A resin material is injection-molded using an injection mold in which a resin flow channel is designed so that a plurality of gates are provided along a longitudinal direction at a position corresponding to an inner circumferential surface of a spacer, to obtain a molded product, the spacer having a shape that a plurality of arc-shaped circumferential surfaces are linked through a constricted part. The molded product is cooled in a state in which a runner that is connected to the gates is allowed to remain, and the runner is cut off thereafter. A water jacket spacer is produced by injection molding while achieving excellent moldability, the water jacket spacer being disposed in a water jacket, and controlling the flow of a coolant, the water jacket spacer including a plurality of segments, or having a shape that the water jacket spacer can be partially inserted into the water jacket.

A method including a first step of performing clamping of a mold, injection and dwelling in an injection molding machine, a second step of performing a conveyance and a cooling of the mold outside of the machine, and a third step of performing a conveyance of the mold into the machine, an opening of the mold and an ejection of a molded part in the machine. The second step is performed for a first mold, the third step and the next first step are performed for a second mold. The first mold is conveyed by a first conveyance apparatus which is arranged on one lateral side of the machine. The second mold is conveyed by a second conveyance apparatus which is arranged on the other lateral side and is independently driven from the first conveyance apparatus.

In composition of a heating cylinder cover that covers a heating cylinder 2 having a temperature control mechanism 3m in which at least a plurality of heating units 3a, 3b, 3c, . . . are provided on an outer circumferential surface 2ms of a heating cylinder body 2m along an axial direction Fs, the heating cylinder cover includes a heat-retaining cover part 5 that is integrally provided with a cover body part 5m and a plurality of partition parts 5a, 5bc, 5de, . . . ; the cover body part 5m is attached to the heating cylinder 2 thereby forming a predetermined covered space S between the cover body part 5m and the temperature control mechanism 3m and covers at least an upper half part 2u of the heating cylinder 2, and the partition parts 5a, 5bc, 5de, . . . project from an inner surface 5mi of this cover body part 5m toward the temperature control mechanism 3m and divides the covered space S into a plurality of closed spaces Sab, Scd, . . ..

In composition of a heating cylinder cover that covers a heating cylinder 2 having a temperature control mechanism 3m in which at least a plurality of heating units 3a, 3b, 3c, . . . are provided on an outer circumferential surface 2ms of a heating cylinder body 2m along an axial direction Fs, the heating cylinder cover includes a heat-retaining cover part 5 that is integrally provided with a cover body part 5m and a plurality of partition parts 5a, 5bc, 5de, . . . ; the cover body part 5m is attached to the heating cylinder 2 thereby forming a predetermined covered space S between the cover body part 5m and the temperature control mechanism 3m and covers at least an upper half part 2u of the heating cylinder 2, and the partition parts 5a, 5bc, 5de, . . . project from an inner surface 5mi of this cover body part 5m toward the temperature control mechanism 3m and divides the covered space S into a plurality of closed spaces Sab, Scd, . . ..

An apparatus (1) for handling and cooling plastic preforms comprising a rotatable handling station (2), provided with a plurality of retaining and cooling pins (3) for preforms and adapted to cooperate with an extraction plate (4) adapted to extract the preforms from an injection mold; an aeraulic circuit (5) connected to said station and comprising an aspiration duct (6) for aspirating air from the inside of the station; a delivery duct (7) for sending air to said station; cooling means (8) arranged along the delivery duct for cooling the air sent to said station; aspiration means (9, 19, 29) connected at least to the aspiration duct and to the delivery duct, and wherein switching means are further provided, to pass from a first circuit configuration, in which there is an air passage from the delivery duct to the inside of the station, to a second circuit configuration in which there is an air passage from the inside of the station to the aspiration duct, whereby, in the first configuration, air is blown by means of the plurality of pins, while, in the second configuration, air is aspirated by means of said plurality of pins.

A machine is disclosed for coating field joints of pipeline with a coating material. The machine includes an extruder, at least one accumulator, a mold, and pipework. The extruder is configured to melt the coating material into a molten coating material, and the at least one accumulator is configured to store the molten coating material. The mold is configured to fit around the field joints and is configured to mold the molten coating material to harden about the field joints. The pipework connects the extruder to the at least one accumulator and connects the at least one accumulator to the mold. The pipework is configured to conduct the molten coating material along the pipework. At least one heater has a fluid medium and is configured to heat the fluid medium to at least one temperature setpoint. Conduit work connects the at least one heater to the pipework and is configured to conduct the heated fluid medium with the pipework to keep the coating material molten in the pipework.

A dialyzer housing manufacturing system includes a molding device configured to mold a dialyzer housing, and a tool coupled to a robotic arm and configured to retrieve the dialyzer housing from the molding device after the dialyzer housing is molded. The tool includes a frame, a first suction cup connected to a first portion of the frame, and a second suction cup connected to a second portion of the frame, the second suction cup being oriented about 70 degrees to about 110 degrees relative to the first suction cup.

In a method for manufacturing a resin container, in the adjusting the temperature of the preform, the preform is accommodated in a cavity mold, a refrigerant introduction member is inserted into the preform, the refrigerant introduction member including a first flow path and a second flow path which are different in introduction or discharge position of a refrigerant, the preform is cooled by bringing the preform into close contact with an inner wall of the cavity mold at a pressure of the refrigerant introduced from the refrigerant introduction member. When the preform is cooled, cooling is performed by switching between a first cooling blow for introducing the refrigerant from the first flow path and discharging the refrigerant from the second flow path and a second cooling blow for introducing the refrigerant from the second flow path and discharging the refrigerant from the first flow path.