Abstract: A disc-molding mold includes a first support plate disposed at the stationary side of the mold; a first mirror-surface disc attached to the first support plate; a first guide ring disposed radially outside the first mirror-surface disc and attached to the first support plate; a second support plate disposed at the movable side of the mold; a second mirror-surface disc attached to the second support plate; a second guide ring disposed radially outside the second mirror-surface disc and attached to the second support plate; a guide post attached to either the first or second guide ring and projecting toward the other guide ring; and a guide bushing attached to the other guide ring and adapted to guide the guide post. The first and second guide rings each have a temperature control medium passage formed therein in order to allow passage of a temperature control medium. Thus, the thermal expansion of the first guide ring is made equal to that of the second guide ring.

Abstract: A double row molding apparatus provides greatly increased production of food patty molding machines. The apparatus comprises a mold plate having front and back cavities in longitudinal and transverse alignment. When the mold plate is at a retracted position, front and back fill slots enable flow of the food product from a manifold simultaneously to all the cavities. At an extended position, all the patties are ejected simultaneously by a knockout mechanism. The front and back fill slots may be either one long fill slot, or multiple short fill slots in communication with respective mold plate cavities. In a modified embodiment, a single fill slot communicates only with the back cavities when the mold plate is in its retracted position. As the mold plate advances toward its extended position, the row of back cavities passes over the fill slot and enables the food product to flow into the back cavities.

Abstract: A plastic article is formed in an injection mold by injecting molten plastic into the injection mold at an elevated temperature, cooling the plastic from the molten condition to a solid condition, and crystallizing a portion of the plastic by slowing down the cooling of said portion.

Abstract: An injection mould which comprises at least five modules aligned with each other. The five modules correspond to a first mould module and a second mould module to form a product cavity, a drive module for driving of sliders, an engaging module adapted, by application of a force, to prevent dividing between the first and the second mould module when introducing product material into the product cavity, and an ejector module for ejecting a completed product from one of the first and the second mould module.

Abstract: A mold for use in an injection mold assembly. The mold includes a cast mold member or housing with an internal cooling chamber. The cooling chamber has at least one mold wall with a first surface on one side of the wall and a second surface on the opposite side of the wall from the first surface. The wall has a substantially uniform wall thickness. A central plug is located inside the cooling chamber and is spaced apart from the second side of the wall. A channel is located between the wall and the central plug. The channel extends sustantially from one end to the other end of the cooling chamber. Inlet and outlet conduits are formed in one end of the cooling chamber for channeling fluid into and out of the cooling chamber.

Abstract: A molding apparatus and molding method are provided for molding of small objects from a thermoplastic elastomer. The apparatus includes a heated transfer plate assembly, an insulation plate assembly adjacent the transfer plate assembly and a cooled cavity plate assembly. The transfer plate assembly is heated sufficiently to maintain a thermoplastic elastomer in a molten state. The cavity plate assembly is cooled sufficiently to solidify a thermoplastic elastomer injected into cavities of the cavity plate assembly.

Abstract: A cooling probe is provided for use with a mold section having an elongate blind passage extending therein. The cooling probe is made up of an axial spool having an outer peripheral surface and an internal inlet and outlet passage. The inlet tube connects to the spool and extends into the mold blind passage. An outlet and an inlet swivel fitting telescopically sealingly cooperate with the spool outer periphery and provide outlet and inlet fluid connectors which can be freely rotated relative to the spool to facilitate easy installation and removal of the cooling probe from the mold section.

Abstract: A method and apparatus for thermostatically controlling mold temperatures. The molding apparatus includes at least two die sections and a thermostatic control valve. At least one of the die sections has a cooling channel extending through portions of the die section. The cooling channel has an inlet end connected to a source of cooling fluid and an outlet end connected to an exhaust line. The thermostatic control valve is interposed in the exhaust line and has closed and open conditions. In the closed condition, the flow rate of fluid through the cooling channel is restricted causing the temperature of the die section to increase. In the open condition, the flow rate of fluid through the cooling channel is increased causing the temperature of the die section to decrease. The thermostatic control valve automatically moves between the open and closed conditions responding to the temperature of fluid through the cooling channel.

Abstract: A plastic article is formed in an injection mold by injecting molten plastic into the injection mold at an elevated temperature, cooling the plastic from the molten condition to a solid condition, and crystallizing a portion of the plastic by slowing down the cooling of said portion.

Abstract: There are provided a disc-manufacturing mold capable of manufacturing a disc substrate having no irregularities in thickness in its circumferential direction and a disc manufacturing apparatus using the mold. The disc-manufacturing mold is used for forming a disc substrate by injection molding. A cooling water ditch is arranged on the mold. The cooling water ditch is configured such that a disc distorts substantially evenly in its circumferential direction when the disc is manufactured.

Abstract: A thermally regulated injection mold in which the tooling layer is a relatively thin layer supported by a rib structure disposed on the rear surface. The temperature of the mold is controlled by impinging the rear surface of the tooling layer with a heated fluid medium or a fluid cooling medium.

Abstract: A polyimide film F is brought into an intimate contact with a molding die 3 having a concave molding surface 3a so as to tightly close the open end thereof, and the polyimide film F is bent to deform only by the pressure difference of gas while being heated in a contactless manner. Molding is conducted by applying depressurization for a space 8 on the side of the molding die 3 relative to the polyimide film F while pressurizing the space 9 on the opposite side for the pressure difference at least in the final stage of the bending deformation so as to be in intimate contact with the concave molding surface 3a.

Abstract: A rotary disc valve is disclosed which generally includes a housing having an inlet side and an outlet side, and a disc rotatably mounted within the housing between the inlet side and the outlet side thereof. The disc includes an outlet bore which is generally aligned with the axis of rotation of the disc and extends from the outlet face of the disc partially through the disc. One or more inlet bores spaced radially outwardly from the axis of rotation of the disc extend from the inlet face of the disc partially through the disc and communicate with the outlet bore. The inlet bore or bores are located such that a bore may be selectively brought into communication with a single one of inlet side passages by rotating the disc until the bore is aligned with the desired passage. Since the outlet bore and an outlet passage are aligned along the center of rotation of the disc, the outlet bore stays in constant communication with the outlet passage in the outlet side of the housing as the disc is rotated.

Abstract: A form, fill and seal packaging machine for forming, filling and sealing a carton, molds a closure directly onto the carton. The machine includes a carton erection station adapted to receive a carton in a generally flat form and to erect the flat form carton into a tubular form defining an internal carton region. A direct injection molding station has an internal mold tool and an external mold tool. The internal mold tool is configured for receipt within the internal carton region and the internal mold tool and the external mold tool are configured to receive and clamp the carton therebetween. The direct injection molding station further includes a polymer injection system for injecting polymer from a location external of the carton to the internal mold tool. The closure is directly molded in place on the carton. A mold tool set, a method for carrying out the molding and a closure molded thereby are also disclosed.

Abstract: A core rod positioning device is provided. The core rod positioning device has a sleeve having an outer surface defining an interior surface of an article molded using the core rod assembly. The sleeve also has an interior surface and a mandrel is located within the sleeve. Portions of the mandrel define a first passageway therethrough and which terminates at a port located in the exterior surface of the mandrel. The exterior surface of the mandrel cooperates with the interior surface of the sleeve thereby defining a second passageway between the sleeve and the mandrel. An adjustment mechanism is operably coupled to the mandrel allowing the mandrel to be adjusted laterally relative to the sleeve.

Abstract: A mold assembly including moveable mold parts, one of which includes a plurality of hollow cavities. Each hollow cavity forms an outer wall of an elongated, generally annular portion of a molded part and the other mold part includes a corresponding plurality of core elements, which form an inner wall of the same portion of the molded part. Each core is disposed within a corresponding cavity to define a generally annular mold chamber portion for receiving molten material to be molded to form the shape of the portion of the molded part. Each core element includes a cooling apparatus and each cavity includes an outside cavity-cooling device. Each core element includes a first portion made of high strength material and a tip portion made of material having a greater heat diffusivity and heat transfer coefficient than said first portion.

Abstract: In a mold device for injection molding of synthetic resin having a cavity surface alternately heated and cooled and a bottoming structure for producing a product having a bored portion like a window, a bottoming portion for the production of a product having a bored portion is provided on a parting surface of the mold and a vacant space is provided in the bottoming portion. Thus, the contact area of the bottoming portion is reduced and a contact pressure of the bottoming portion and thermal strain due to a temperature difference between the cavity side mold and core side mold are reduced, so that it is possible to prevent occurrence of crack in a portion located immediately outside the window of the product.

Abstract: A plastic article is formed in an injection mold by injecting molten plastic into the injection mold at an elevated temperature, cooling the plastic from the molten condition to a solid condition, and crystallizing a portion of the plastic by slowing down the cooling of said portion.

Abstract: A glassware forming mold that includes a body of heat conductive construction having a central portion with a forming surface for shaping molten glass and a peripheral portion spaced radially outwardly of the central portion. A plurality of coolant passages extend in a spaced array through the peripheral portion of the mold body, and liquid coolant is directed through such passages for extracting heat from the body by conduction from the forming surface. A plurality of openings extend axially into the body radially between at least some of the liquid coolant passages and the forming surface for retarding heat transfer from the forming surface to liquid coolant in the passages.

Abstract: This invention provides a resin molding device, resin molding method and resin molded product capable of guiding a sink to an optional position to perform a precise molding.

Abstract: A mold device includes two mold pieces having a mold cavity for receiving a material to be treated, a heating member for heating the mold pieces, and a cooling casing selectively movable to engage with the mold pieces and to cool the material received in the mold pieces after the material has been heated and formed by the heating member. The heating of the mold pieces by the heating member thus will not be affected by the cooling casing. The heating member is received in one of the mold pieces piece. The casing has a conduit for receiving the cooling media.

Abstract: A cavity die (1) has a flange part (5), a body (7), and a cavity surface (9). An annular groove (11) is formed on a periphery of the body (7). A region surrounded with the annular groove (11) and a retaining plate forms a boundary flow path. An inner flow path (17) is formed inside the body (7). The inner flow path (17) is linear. Both ends of the inner flow path (17) are open on a peripheral surface of the body (7) to form openings (19) thereon. A heating medium flows into the boundary flow path and the inner flow path (17) through a flow path formed on the retaining plate. Thereby, the temperature of the cavity die (1) is adjusted.

Abstract: This invention relates to methods and apparatus for making articles made of polyester, preferably polyethylene terephthalate (PET), having coated directly to at least one of the surfaces thereof one or more layers of thermoplastic material with good gas-barrier characteristics. In one preferred method and apparatus, preforms are injection molded, barrier-coated immediately thereafter, and remain on a mold portion for a time to speed cooling of the completed preform. Preferably the barrier-coated articles take the form of preforms coated by at least one layer of barrier material and the containers are blow-molded therefrom. Such barrier-coated containers are preferably of the type to hold beverages such as soft drinks, beer or juice. The preferred barrier materials have a lower permeability to oxygen and carbon dioxide than PET as well as key physical properties similar to PET.

Abstract: A disc-molding mold includes a first support plate disposed at the stationary side of the mold; a first mirror-surface disc attached to the first support plate; a first guide ring disposed radially outside the first mirror-surface disc and attached to the first support plate; a second support plate disposed at the movable side of the mold; a second mirror-surface disc attached to the second support plate; a second guide ring disposed radially outside the second mirror-surface disc and attached to the second support plate; a guide post attached to either the first or second guide ring and projecting toward the other guide ring; and a guide bush attached to the other guide ring and adapted to guide the guide post. The first and second guide rings each have a temperature control medium passage formed therein in order to allow passage of a temperature control medium. Thus, the thermal expansion of the first guide ring is made equal to that of the second guide ring.

Abstract: A core for molding apparatus includes inner surface configurations for improving the cooling of injected plastic material.

Abstract: A mould for manufacturing disc-like objects including at least two mould parts which are mutually movable between a closed position in which they bound a mould cavity, which mould cavity is connected to an injection conduit for admitting heated, plasticized plastic under pressure into said mould cavity, and an opened position in which a disc-like object can be removed. The mould also has a device for removing a central portion from a disc-like object to form a central hole present therein, which device comprises a cylindrical part which is movable in axial direction in the closed situation of the mould cavity. The mould has the feature that at least one of the two mould parts is tempered only in the middle zone of the mould cavity for tempering the inflowing plastic during the inflow thereof via the pressure line and thus during the filling of the mould cavity.

Abstract: A mold for injection compression molding, in which an elastic inner cavity with low rigidity and expandable in a direction perpendicular to the mold opening direction is provided in a rigid outer cavity, and when resin is filled in this inner cavity, the inner cavity expands due to a filling pressure of this resin, and when the mold is kept and cooled in a pressurized state, the inner cavity shrinks and a molded product with a desired thickness in a direction perpendicular to the mold opening direction can be obtained.

Abstract: An apparatus and method for injection molding including at least one nozzle capable of injecting a molten material, and a shuttling system with a first mold part and a second mold part. The first mold part has at least one injection cavity for receiving molten material that is aligned and in communication with the at least one nozzle. The first mold part also has at least a pair of cooling chambers flanking the at least one injection cavity. The second mold part has a laterally moveable shuttle plate with a first mold core and a second mold core. The first and second mold cores are capable of being aligned with and inserted into both the at least one injection cavity and the cooling chambers.

Abstract: A plastic molding for use in an optical device, a method of producing the molding by injection molding, and an apparatus for practicing the method are disclosed. Only a part of a molding expected to sink is surely caused to sink while, e.g., a mirror surface is surely transferred to a desired part of the molding.

Abstract: A plastic article is formed in an injection mold by injecting molten plastic into the injection mold at an elevated temperature, cooling the plastic from the molten condition to a solid condition, and crystallizing a portion of the plastic by slowing down the cooling of said portion.

Abstract: Preforms are produced by injection molding in an injection molding machine, allowing enough pre-cooling time within the mold to create a temporary rigid skin on the preforms, and transporting the preforms to a separate cooling device. In the preferred embodiment, the step of transporting the preforms to a separate cooling device includes the steps of removing the preforms into a carrier mounted as an end-of-arm tool on a robot, the carrier having a plurality of orifices to receive the preforms, and using the robot to transport the carrier and the preforms to a cooling device interface. The cooling device interface has a plurality of hoses connected thereto for pneumatically transporting the preforms from the carrier to the cooling device. The preferred apparatus thus includes a robot, and an end-of-arm tool for the robot having a plurality of orifices alignable with mold cavities in the injection molding machine once the mold halves are opened.

Abstract: Hard to fill large-surface-area parts and/or thinwalled configurations of optical lenses and reflective optical elements are among the difficult-to-mold thermoplastic products which require precision replication of the molding surfaces, in micro detail. We combine multiple opposing gates (to reduce the meltflow pathlength) with non-isothermal steps of firstly, heating these mold surfaces (with circulating heat transfer fluids supplied by a hot side supply system, to a temperature setpoint sufficiently high to retard solidification), then secondly, injecting the melt through these opposing gates, then thirdly, rapidly cooling to solidification (by circulating heat transfer fluids of much lower temperature, supplied from a cold side supply system).

Abstract: A plastic article is formed in an injection mold by injecting molten plastic into the injection mold at an elevated temperature, cooling the plastic from the molten condition to a solid condition, and crystallizing a portion of the plastic by slowing down the cooling of said portion.

Abstract: An injection-molding apparatus for molding containers made of thermoplastic material for fluid products, is of the type that comprises a frame for supporting a mold constituted by a female mold part and a corresponding male plug which can be coupled axially, an interspace for molding at least one container being formed between the female mold part and the male plug, a feeding circuit for feeding the thermoplastic material which is associated with the mold and is provided with an injection device for injecting the material into the interspace, a circuit for cooling the mold for the setting of the injected material so as to obtain the container, and automatic centering elements for centering the male plug with respect to the female mold part, which are associated with the mold and operate alternatively.

Abstract: The technical field of the invention broadly relates to injection molding systems and more particularly to cooling of a core used in a mold of an injection molding machine. Cooling a core involves supplying coolant through a lengthwise supply tube that extends within a hollow bore formed in the core. The coolant flows through the supply tube, exiting as a stream of fluid at an open end of the supply tube where the stream contacts a substantially perpendicular inner surface of the core. The stream of fluid is initially deflected by this inner surface on an axis perpendicular to an axis of the original flow producing a stagnation zone in the stream having zero or relatively low velocity. The stagnation zone is adjacent to a high heat gate area and results in poor cooling of the core tip. The invention solves the problem of stagnation by application of a fluid velocity inducer.

Abstract: An apparatus for molding composite articles includes a pair of opposed matched-tool mold sections, each having a rigid housing and a thin, semi-rigid membrane removably and sealably mounted on the housing so as to define a fluid-tight chamber therein. The chamber of each mold section is filled with a noncompressible heat-conductive fluid to provide fluid backing to the portions of each membrane defining the molding surfaces of each mold section. A system of temperature control coils extending within each chamber are connected to an external heater/chiller unit to permit circulation therethrough of a suitable temperature control fluid, whereby positive control of the temperature of the backing fluid and, correlatively, the molding surfaces of the membranes.

Abstract: Injection molding apparatus having an elongated cooled mold core (10) which forms an inner side (90) of the cavity (66). The elongated mold core (10) extends through an opening (92) through a core lock member (94). The outer surface (80) of the mold core (10) and the inner surface (120) of the opening (92) through the core lock member (94) have matching parts (118, 122) which taper inwardly towards the rear core (84) of the mold core (10). A nut (126) secures the mold core (10) to the core lock member (94) with the tapered parts (118, 122) abutting against each other. The reverse taper of these parts (118, 122) prevents injection pressure impact opening any space between them and thus prevents lateral core shift.

Abstract: A water jacket assembly for use in injection mold systems, and particularly with heterocavity injection mold systems. The water jacket assembly comprises a sleeve construction of material with high heat-transfer properties. A conduit is beveled into the outside perimeter of the sleeve forming a circulation channel. The inside perimeter of the sleeve is fashioned to receive an individual injection mold. A mold base slideably received the water jacket and cooling fluid is circulated from the mold base through circulation channel in the water jacket, and then back to the mold base. A fluid input plug and fluid output plug extend from the mold base and are received by the apertures in the individual mold for additional cooling.

Abstract: A machine for injection molding of plastic articles comprising a rotatable wheel having a plurality of molds mounted along the periphery thereof with spacers mounted therebetween, wherein each mold comprises two opposing sections pivotally attached to each other such that the mold opens radially towards the periphery of the wheel. The periphery of the molds and spacers are machined to a precise radius to collectively form a continuous circle. Each mold comprises a plurality of cavities wherein each cavity communicates with the exterior of the mold along the periphery thereof through an opening formed at the mold parting line. A stationary injection nozzle is machined to precisely conform to the periphery of the circular structure and to ride along the surface thereof as the wheel is rotated.

Abstract: An injection molding method, an injection mold and a valve gate device, in which a movable pin moves easily, without excess force being exerted thereto, to properly open and close a gate. Closing a gate 10B by a cylindrical movable pin 27 allows excess resin to easily return back to a resin conveying path side through an outer edge portion at the end of the movable pin 27, so that even a large-diameter gate 10B can be reliably closed by the movable pin 27 which can be easily moved due to reduced resin resistance on the movable pin 27.

Abstract: Injection molding apparatus having a cavity insert (10) with integral inner and outer portions (136, 138) having a cooling fluid flow channel (166) extending therebetween. In a preferred embodiment, the cooling fluid flow channel (166) is formed by a groove (164) machined in the outer surface (162) of the inner portion (136). This brings the cooling fluid flow closer to the cavity (66) and improves cooling efficiency and reduces cycle time.

Abstract: A mold insert for an injection molding machine has a circumferential liquid conduit groove and a plurality of liquid-receiving bores extending inwardly from the groove. Baffles are removably inserted into the liquid-receiving bores and have heads located in locking engagement with the sidewalls, including the undercut portions thereof, to retain the baffles in their respective liquid-receiving bores. Each baffle has a blade that fits snugly within a liquid-receiving bore to separate the liquid-receiving bore into a liquid inlet passageway and a liquid outlet passageway. Fins project outwardly from opposite faces of the blade to create turbulence in liquid flowing into and out of the liquid-receiving bore, which enhances cooling (or heating) of the mold insert. The baffle is also useful with other solid components having a liquid conduit for cooling purposes and a transverse liquid-receiving bore intersecting the liquid conduit.

Abstract: A mold assembly for molding a thermoplastic resin, which comprises; (a) a first mold member and a second mold member for manufacturing a molded article of a thermoplastic resin, (b) an insert block provided in the first mold member, said insert block constituting part of a cavity, having a thickness of 0.1 mm to 10 mm and being formed of a material having a thermal conductivity of 2.times.10.sup.-2 cal/cm.multidot.sec.multidot..degree.C. or less, and (c) a molten thermoplastic resin introduction portion provided in the second mold member, wherein an insert block covering portion is formed in the second mold member, and when the first mold member and the second mold member are clamped to each other, (A) a clearance between the insert block and the insert block covering portion is equal to, or less than, 0.03 mm, and (B) an amount of overlapping of the insert block and the insert block covering portion is equal to, or greater than, 0.5 mm.

Abstract: A method and apparatus for molding composite articles can include a pair of opposed hollow mold sections having first and second molding membranes which define a mold plenum therebetween. Each mold section can be filled with a substantially noncompressible, thermally conductive fluid. The temperature of the mold plenum can be controlled by regulating the temperature of the thermally conductive fluid. Sensing of various parameters during the injection and curing processes of the molding fluid, for example pressure, flowrate, temperature and filling of the plenum can be used to optimize the molding process.

Abstract: The present invention relates to a device for cooling and removing molded parts, which device has particular utility with an index molding machine having a rotary turret block with at least two movable mold halves thereon. The device includes a carrier plate having a plurality of tubes for receiving and cooling at least one molded part mounted to a first surface thereof and a plurality of blowing tubes for applying a cooling fluid to external surfaces of at least one molded part, while the at least one molded part is positioned on one of the faces of a rotary turret block, mounted to a second surface of the carrier plate. The device further has an actuation system for moving the carrier plate between a first position where the receiving and cooling tubes are aligned with the at least one molded part and a second position where the at least one molded part is being cooled within the receiving and cooling tubes and the cooling fluid applying blowing tubes are positioned adjacent a respective turret block face.

Abstract: The present invention relates to a device for cooling molded parts and for transporting the molded parts from a receiving position to a holding/ejecting position. The device of the present invention has particular utility with an index molding machine having a rotary turret block with at least two movable mold halves thereon. The cooling device includes a cooling station assembly having a plurality of blowing tubes for applying a cooling fluid to external surfaces of molded parts, a take-off plate having a plurality of holders for receiving cooled molded parts and a connecting plate connecting the take-off plate and the cooling station assembly. The connecting plate is connected to the take-off plate by a pivotable connection and is connected to the cooling station assembly by a rigid connection. The connecting plate is movable along an axis substantially parallel to one of the faces upon which the molded parts to be cooled and removed are positioned.

Abstract: Injection molding apparatus with each elongated cooled mold core (10) having a hollow elongated inner part (78) inside a hollow elongated outer part (80) and an integral dome shaped front cap (132). The outer surface (120) of the inner part (78) and the inner surface (126) of the outer part (80) each having cooling fluid conveying grooves (122, 128) which spiral in opposite direction. This provides very uniform cooling and forces the cooling fluid flow through the grooves (122, 128) to be very turbulent which increases cooling efficiency. It also gives the mold cores (10) additional structural strength to withstand higher injection pressures.

Abstract: Injection molding apparatus with each elongated cooled mold core (10) having a number of cooling fluid bores (118) or grooves (134) extending around a central cooling fluid duct (104). An integral dome shaped front cap (76) encloses the open front end (78). The inner surface (130) of the dome shaped cap (76) has curved ribs (132) which form curved cooling fluid grooves (134) aligned with the cooling fluid bores (118) or grooves (134). The curved ribs (132) give the dome shaped front cap (76) more strength which allows it to be thinner with the curved cooling fluid grooves (134) being closer to the cavity (66) to improve cooling efficiency.

Abstract: A method and apparatus for injection moulding thermoplastic polymers wherein a layer of pressurised gas is provided between at least selected moulded parts (11) and the cooling polymer (28). The gas takes up shrinkage as the polymer cools and allows visual sink marks to be substantially eliminated. Furthermore, cycle times are reduced, fast cooling being permitted by urging the polymer (28) against the outer mould (27) and cooling the outer mould (27).

Abstract: The present invention relates to a cooling device to be used with an index molding machine having a rotary turret block with at least two movable mold halves thereon. The cooling device includes a frame attached to a support for the rotary turret block, cooling tubes for receiving and cooling at least one molded part, which cooling tubes are mounted to a surface of a carrier plate connected to the frame, and an actuation device for moving the carrier plate between a first orientation where the cooling tubes are aligned with the at least one molded part and a second orientation where the at least one molded part cooled within the cooling tubes. In a preferred embodiment of the present invention, the cooling device also includes at least one blowing tube for blowing cool air onto the at least one molded part.