Abstract: A method and apparatus for handling preforms from an injection molding machine whereby an array of molded articles received from the mold is reconfigured into a single row to assist in downstream auxiliary processing.

Abstract: A heat exchange apparatus for a metal mold is provided, which includes a heat exchange passage provided for the metal mold, a first supply unit for supplying hot heat carrier to the heat exchange passage and a second supply unit for supplying cold heat carrier to the heat exchange passage. The heat exchange apparatus performs heat exchange for the metal mold by supplying the hot heat carrier and cold heat carrier to the heat exchange passage switching alternately. And the heat exchange apparatus has a feature that it includes an air supply unit for supplying air to the heat exchange passage so that the heat carriers are purged when the hot heat carrier and cold carrier are switched.

Abstract: A valve bushing assembly for use in an injection molding apparatus is provided. The injection molding apparatus includes a manifold block, a valve pin, and an actuator block. The manifold block has at least one melt channel therein. The manifold block has an exterior surface that faces the actuator block, and has a manifold pass-through extending from the exterior surface to the at least one melt channel. The manifold pass-through has a manifold sealing surface therein. The manifold pass-through permits the valve pin to pass therethrough. The actuator block has an actuator attached thereto, that is operatively connected to the valve pin. The valve bushing assembly includes a bushing and a spacer. The bushing is adapted to be received in the manifold pass-through. The bushing has a bushing pass-through that is adapted to align with the manifold pass-through and is adapted to slidably receive the valve pin.

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: The invention relates to an injection mould (1) for producing three-dimensional components. The mould has a system (2) for mould tempering having at least one groove (12) which is arbitrarily extended between two points in the available volume of the mould for conducting a tempering medium which is intended for tempering of modules (4, 8) included in the mould (1). Each groove (12) is along essentially its entire extent covered by a cover (15). The invention also concerns such a system (2) for mould tempering of injection moulds (1), as well as an injection moulding assembly comprising such an injection mould (1).

Abstract: Disclosed herein is a system for momentarily heating the surface of a mold and system thereof. The system comprises a casting material feeder, upper and lower molds, an injection molding control, an air and gaseous fuel mixture and supply unit, an interface and a control panel. The casting material feeder serves to supply molten casting material. The upper and lower molds serve to form a predetermined shaped cast. The injection molding control serves to control the upper mold and the lower mold. The air and gaseous fuel mixture and supply unit serves to supply compressed air and gaseous fuel simultaneously or selectively. The gaseous fuel mixture and supply control serves to control the operation of the air and gaseous fuel mixture and supply unit. The interface serves to interface the injection molding control and the gaseous fuel mixture and supply control. The control panel serves to visually display the control, condition and operation of the components of the system.

Abstract: A modular molding system having: an upper frame assembly configured for receiving a cavity module therein; a lower frame assembly configured for receiving a core module therein, the lower frame assembly including a two-stage master ejector system; a cavity module positioned within the upper frame assembly; and a core module positioned within the lower frame assembly, the core module including a two-stage ejector system having a plurality of ejection elements associated therewith; wherein the core and cavity modules together define a molding cavity for molding a workpiece therein, and wherein the master ejector system is operable to drive the ejection elements of the core module.

Abstract: A molten material supply unit includes a heating cylinder. The heating cylinder may receive and heat the material in a substantially vacuum condition. A molding apparatus may include a pressurizing and charging unit in addition to the molten material supply unit. The pressurizing and charging unit is adapted to receive the melted material from the molten material supply unit and to charge the melted material into a die under pressure.

Abstract: A modular flow cell having a high optical throughput, a long optical path length and a small cross-section. The modular flow cell configuration includes remote ports or connections for liquid and light input, and liquid and light output. The flow cell includes a flow cell body having two ends, each with a respective end interface secured thereto. The flow cell is configured to formn a part of a modular flow cell assembly. The flow cell body includes a channel having a through-aperture with an inner surface. A light guiding material, e.g. a transparent fluoropolymer material having a refractive index less than the refractive index of common chromatography solvents, is disposed proximate to the channel to form a light guiding through-aperture in the flow cell body.

Abstract: There is disclosed a molding die which can prevent or restrain a wedge-like deformation from being formed at an outer peripheral portion of an optical recording disk. The molding die is for molding a thin circular plate optical recording disk by injecting a molten thermosetting resin in a cavity, and an outer peripheral member coming in contact with a portion which becomes an outer peripheral surface of the optical recording disk is made of a material having a thermal conductivity lower than a thermal conductivity of a material of an opposite member coming in contact with a portion which becomes a main surface of the optical recording disk, that is, a stamper, a stationary mirror, and a movable mirror.

Abstract: Injection molding apparatus with robot device and mechanical pull-out device for removing preforms from the robot device, the robot device comprising a number of receiving tubes for preforms, the preforms being disposed in the tubes such that a collar and a screw thread portion of the neck of the bottles to be formed reach outside the receiving tubes, and the pull-out device comprising clamping elements which are positioned opposite the robot when it is in an ejection position, while first driving means for the clamping elements are provided, which can move the clamping elements towards the receiving tubes of the robot arm and away therefrom, respectively, and second driving means which can bring the clamping elements into a closed clamping position or an opened position, as well as control means for the first and second driving means. The control means are arranged to control the clamping elements.

Abstract: Plant for cooling preforms, comprising a collection and translation element provided with a plurality of receptacles adapted to accommodate respective preforms that are usually knocked out of an injection mould, a revolving-turret element with two opposite surfaces provided with a plurality of cups adapted to accommodate a respective preform; said turret revolves in a controlled manner about a horizontal axis so as to successively orientate the two surfaces upwards and downwards, and the collection and translation element can be displaced with a translational motion from a preform loading position selectively to a plurality of distinct positions, which lie above the surfaces of the turret when rotated upwards, and can engage and release the preforms from the respective receptacles. The distribution pattern of the receptacles is similar to the distribution pattern of the cups so as to enable the preforms to fall exactly into respective cups.

Abstract: Systems and methods for producing chocolate shells by immersing a core into a liquid filled mold cavity. The temperature of the core member is controlled. A mold cavity closure with shell rim molding surfaces extends peripherally around the core member and, together with outer surfaces of the core and inner surfaces of the mold cavity, the molding surfaces determine the full geometry of the chocolate shell. The cavity closure is axially movable in relation to the core member and has unobstructed travel in relation to the core member, when the mold cavity closure is engaged with the mold. The device includes a load for pressing the core member in direction against the mold cavity to achieve pressure build up in the mass.

Abstract: An injection molding cooling core 10 comprises an elongated, hollow core pin 15 having an inner surface 16 and an outer surface 17. The core pin 15 is open at one end, and has an end cap 18 at an opposite end. The core 10 also has an elongated, hollow insert 20 having an inside surface 21 and an outside surface 22. The insert 20 has a plurality of protrusions 25 on the outside surface 22, which extend radially outwardly from the insert 20. The insert 20 is designed to fit within the core pin 15 whereby the protrusions 25 contact the inner surface 16 of the core pin 15. The protrusions 25 are metallurgically joined to the core pin 15 whereby there is a continuous metallurgical path for heat transfer between the outer surface 17 of the core pin 15 and the insert 20. The protrusions 25 also provide strength to the core pin 15 and a greatly enhanced heat transfer surface.

Abstract: The present invention relates to an improved method and apparatus for injection molding and cooling molded articles such as preforms so as to avoid crystallinity. The apparatus and method make use of a take-off plate for removing articles from a mold, which plate may include heat transfer devices for cooling exterior surfaces of the molded articles or preforms, and a system for cooling in a controlled manner interior surfaces of the molded articles or preforms.

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: An injection press for molding pieces of elastomer comprises a fixed platen, a moving platen, and a turret carrying a plurality of molds, the turret and the molds being interposed between the two platens so as to be capable of being clamped between them in order to close the molds, and the turret being mounted to rotate so as to move each mold sequentially between an injection station, vulcanization stations, and an unmolding station. The press also comprises an injector device adapted to inject elastomer into each mold while it is in the injection station, heater devices adapted to heat the molds, and a control device adapted to move the moving platen and to cause the turret to turn.

Abstract: The present invention relates to an improved method and apparatus for injection molding and cooling molded articles such as preforms so as to avoid crystallinity. The apparatus and method make use of a take-off plate for removing articles from a mold, which plate may include heat transfer devices for cooling exterior surfaces of the molded articles or preforms, and a system for cooling in a controlled manner interior surfaces of the molded articles or preforms.

Abstract: The present invention relates to an improved method and apparatus for injection molding and cooling molded articles such as preforms so as to avoid crystallinity. The apparatus and method make use of a take-off plate for removing articles from a mold, which plate may include heat transfer devices for cooling exterior surfaces of the molded articles or preforms, and a system for cooling in a controlled manner interior surfaces of the molded articles or preforms.

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 device for temperature adjustment of an object generally comprises means for providing a flow of a conditioning fluid, said flow of conditioning fluid being directed along a surface of said object, and at least one fin directed towards said surface of said object. The at least one fin is arranged in the immediate vicinity of said surface of said object so that an edge of said fin extends substantially normally with respect to said flow of said conditioning fluid, said conditioning fluid passing between said surface of said object and said edge of said fin.

Abstract: A device and method for cooling granules, in particular wax granules, for processing in an injection-moulding machine, which has a cavity for receiving the granules and having an inlet opening and an outlet opening, and at least one further opening is provided for supplying a gaseous medium. In the device of the invention, the outlet opening is arranged directly or indirectly at the feed region of the screw of an injection-moulding machine and the cavity is connected to a cold-gas production device. In the process of the invention, the inlet temperature and the outlet temperature of the gas is determined and by determining the temperature difference, the preset theoretical temperature in the cavity is controlled and/or regulated.

Abstract: The present invention relates to an innovative cooling pin for cooling molded articles, a system which incorporates same, and a method for cooling a molded article which utilizes the cooling pin. The cooling pin of the present invention has a central pin structure with a head portion, a cooling fluid channel within the central pin structure terminating in an outlet in the head portion, and a plurality of fins positioned along the length of the central pin structure. Adjacent ones of the fins are preferably separated by a spacer. Each of the fins is preferably formed from a flexible material such as a flexible plastic material. The fins force and maintain cooling fluid introduced into the interior of the molded article in close proximity to the interior surfaces of the molded article.

Abstract: The present invention relates to a method of producing an insert-molding product in which an insert product 2 is covered with a synthetic resin by arranging the insert product 2 in a cavity 11 of a mold 10, holding the insert product by a holding pin 12, pouring a molten synthetic resin 3 into the cavity 11, and retracting the holding pin 12. The moving pin 13 is provided adjacent to the holding pin 12. After the cavity 11 is filled with the synthetic resin 3, the holding pin 12 is retracted and the moving pin 13 is moved in the direction of the cavity 11 to extrude and introduce the synthetic resin 3 into the space where the holding pin 12 used to be positioned.

Abstract: There is provided a molding method of a thermosetting resin in which the formation of a flash can be prevented. This molding method comprises pouring or injecting the thermosetting resin into a mold, and then heating and molding it, and the method further comprises the step of locally heating an unnecessary gap and its peripheries of the mold, which are not concerned with the molding of the thermosetting resin into a desired article having a required shape, whereby the resin in the gap and its peripheries are promptly set to reduce the leakage of the resin into the unnecessary gap.

Abstract: An injection molding heater (38) having one or more melt bores (78) extending therethrough to be removably mounted between the melt distribution manifold (26) and each nozzle (10) in a multi-gate injection molding system. The heater (38) has a plate-like body (92) made of a thermally conductive material and heat is provided to it by a heating element (98) which can be electrical or a heat pipe or by a heated fluid flowing through a passage (126) in the plate-like body (92). Each one or more of the heaters (38) can be connected to separately controlled power sources to separately adjust the heat provided by the heaters (38).

Abstract: The invention relates to an injection molding device (1) having an elongated nozzle (3) and a valve pin (11) coaxially in a channel of the nozzle. The valve pin can be displaced by means of an actuating cylinder (15) and is guided through a bush (13) at the upper end (12) of the nozzle. Cooling means (14, 18) are associated with said bush (13).

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: A device for temperature adjustment of an object generally comprises means for providing a flow of a conditioning fluid, said flow of conditioning fluid being directed along a surface of said object, and at least one inner wall directed towards said surface of said object. The at least one inner wall is arranged in the immediate vicinity of said surface of said object so that an edge of said inner wall extends substantially normally with respect to said flow of said conditioning fluid, said conditioning fluid passing between said surface of said object and said edge of said inner wall.

Abstract: There is provided a hot runner system comprised of a cylindrical runner block (4) which has a hot runner (12) extending through a core portion thereof to communicate between a gate formed on a lengthwise central portion of a side surface of the runner block (4) and the interior of each of a plurality of nozzle members (3), the runner block (4) being enclosed by band heaters (15), blocking members for the hot runner (12), and support plates (6) standing on a base plate (8) and fitted to both end portions of the runner block (4). The blocking members (16) are fitted into both the end portions of the runner block (4). Heaters (22) and (23) are arranged into the core portion and around the periphery of each blocking member, respectively, for compensating for heat loss due to heat radiation and heat transfer to the support plates (6) and for keeping the temperature of each end portion of the runner block in a predetermined temperature range.

Abstract: A device for temperature adjustment of an object generally comprises means for providing a flow of a conditioning fluid, said flow of conditioning fluid being directed along a surface of said object, and at least one fin directed towards said surface of said object. The at least one fin is arranged in the immediate vicinity of said surface of said object so that an edge of said fin extends substantially normally with respect to said flow of said conditioning fluid, said conditioning fluid passing between said surface of said object and said edge of said fin.

Abstract: A device for temperature adjustment of an object generally comprises means for providing a flow of a conditioning fluid, said flow of conditioning fluid being directed along a surface of said object, and at least one inner wall directed towards said surface of said object. The at least one inner wall is arranged in the immediate vicinity of said surface of said object so that an edge of said inner wall extends substantially normally with respect to said flow of said conditioning fluid, said conditioning fluid passing between said surface of said object and said edge of said inner wall.

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: In order to eject resin leaked from an injection chamber (13) toward the shaft side of an injection plunger (31) away from an injection cylinder (30), a plunger-type injection molding machine injection device is equipped with an ejection guide (151, 251) at the rear edge of an injection cylinder which is thermally isolated from the injection cylinder main body. A band heater (53), which heats the ejection guide, is controlled independently of the band heater (38) which heats the injection cylinder. One embodiment of this injection guide (151) causes the ejected resin to fall from the ejection opening (151h) while retaining its molten state. In another embodiment, the ejection guide (251) has ejection channels (251f) which cause the resin to harden and be ejected in a fine strand state.

Abstract: An optical disk exhibiting no detrimental thickness increase (edge wedge effect) that arises at the outer diameter of an optical disk substrate during an injection molding manufacturing process, and an apparatus and method for making such a disk. The optical disk of the present invention is designed for use with an optical disk player, especially where the data on the optical disk is stored air incident. This optical disk includes a disk substrate made from a molded polymeric material. The disk substrate has a first major surface, a second major surface, and an outer edge. The first major surface of the optical disk includes a data region having an intermediate portion and an outer portion. The outer portion extends to the outer edge of the optical disk. The disk substrate has a thickness defined by the distance between the first major surface and the second major surface. The optical disk also includes an information layer covering the data region.

Abstract: A mold for producing a resin molded article. The mold comprises a molding cavity with a member having a recessed surface which defines the shape of the article being molded. Between the molding cavity wall and the member is a thin plate body having a heat capacity such that when a resin having a temperature higher than its transfer starting temperature is introduced into the recessed surface of the member, the resin near the recessed surface is cooled to a temperature lower than its transfer starting temperature, and then the temperature of the resin is increased to a temperature exceeding its transfer starting temperature after the resin fills the recessed surface.

Abstract: A device for temperature adjustment of an object comprises a conditioning tube with at least one temperature conditioning means, said conditioning tube having an open front end for receiving said object at least partially, wherein a conditioning sleeve is slideably arranged inside said conditioning tube, said conditioning tube having an open front end for receiving said object at least partially and an inner cooling surface for leaning against an outer surface of said object, said conditioning sleeve being biased towards the front end of said conditioning tube by an elastic means.

Abstract: A thermal expansion compensation support and method are used in a hot runner injection mold for maintaining liquid-tight relationships between parts that define a flow passageway. The support includes an annular housing having an annular recess that receives a spring, such as a Belleville washer, and a cover that overlies the annular recess in the housing. The housing and the cover are spring biased from each other to maintain a pressure force on the surfaces that are in contact with the outer faces of each of the cover and of the annular housing. The support imparts a holding force on the several parts of the machine that define the molding material flow passageway to prevent leakage. The method involves holding the parts together at a first holding force level for an initial portion of a warm-up temperature range and holding the parts together at a second holding force level for the remainder of the temperature range.

Abstract: A substantial barrier to flow of liquid in a circumferentially-extending liquid conduit groove of a mold insert is provided by forming recesses or undercuts by undercutting the sidewalls of the liquid conduit groove, inserting a plate-like liquid dam within the liquid conduit groove, and clamping the dam in the liquid conduit groove by the use of a pair of locking screws or pins that extend through bores in the dam into engagement with inwardly-facing surfaces of the undercuts. The relationship between the inwardly-facing undercut surfaces and the locking members is preferably such that there is a progressively increasing interfering engagement of the locking members with the undercut surfaces resulting in increasing clamping pressures applied to the dam assemblies.

Abstract: A substantial barrier to flow of liquid in a circumferentially-extending liquid conduit groove of a mold insert is provided by forming recesses or undercuts by undercutting the sidewalls of the liquid conduit groove, inserting a plate-like liquid dam within the liquid conduit groove, and clamping the dam in the liquid conduit groove by the use of a pair of locking screws or pins that extend through bores in the dam into engagement with inwardly-facing surfaces of the undercuts. The relationship between the inwardly-facing undercut surfaces and the locking members is preferably such that there is a progressively increasing interfering engagement of the locking members with the undercut surfaces resulting in increasing clamping pressures applied to the dam assemblies.

Abstract: An apparatus and method for providing targeted cooling to a pre-molded article, such as a preform. A cooling pin is inserted into the preform such that it makes contact with targeted area, such as the mold gate area. This permits conductive cooling of the targeted area. The apparatus and method are particularly suited to post-mold cooling in conjunction with a robotic take-out plate.

Abstract: An insert is held in a cavity within a die set by a movable hold member. Molten resin is injected into the cavity when the insert is held by the hold member. The hold member is separated from the insert at a given timing. A surface of the hold member is heated to a temperature higher than a temperature of an inner surface of the die set. The hold-member surface contacts the molten resin. The die-set inner surface is exposed in the cavity.

Abstract: In a first aspect, a process for forming deodorant or antiperspirant sticks by continuously forming a mobile composition for dispensing into containers or molds at a rate matched with the rate at which it is dispensed, and in other aspects a process in which a mobile deodorant or antiperspirant composition is dispensed by injection molding, i.e. a process in which the deodorant or antiperspirant composition is dispensed under pressure. The composition at the time of injection moulding is preferably either in the vicinity of its regular set temperature, particularly in the range of about 0-3° C. below the regular set temperature and/or partially structured at the time of its delivery it into a container or mold.

Abstract: An apparatus and method for providing targeted cooling to a pre-molded article, such as a preform. A cooling pin is inserted into the preform such that it makes contact with targeted area, such as the mold gate area. This permits conductive cooling of the targeted area. The apparatus and method are particularly suited to post-mold cooling in conjunction with a robotic take-out plate.

Abstract: A generic mold base for an injection molding machine to permit the production of multiple parts from the same mold base. The mold base has mold insert receiving sections in which the mold insert sections are removably mounted. The mold insert sections are held in position by tapered wedges. Multiple sprue openings are provided in the upper mold base section to accommodate different mold insert designs. Accessability openings are provided in each mold base section to accommodate different water passage designs of different mold inserts.

Abstract: A container closer (10) particularly for use on screw top containers such as carbonated beverage containers, the container closure (10) having a generally cylindrical continuous tamper evident band (11) joined by a plurality of frangible bridges (13) to the free edge of a skirt (16) of the closure (10). The band (11) has a segmented internal rib (18) which engages an external retaining flange of the container when the closure (10) is applied to the container so that on removal of the closure (10) the tamper evident band (11) remains on the container or is visually clearly damaged by removal of the closure (10) from the container. The band (11) is provided with longitudinal reinforcement by projections (25 and 28) or other areas of thickening (26) to provide the band (11) with longitudinal stiffness while still permitting it to expand over the retaining flange on the container.

Abstract: An injection apparatus which can reduce frictional resistance which acts on resin during an injection step to thereby prevent variation in a reference position and improve quality of molded products. The injection apparatus comprises a heating cylinder; a screw disposed within the heating cylinder to be rotatable and reciprocatable, the screw having a flight portion in which a flight is formed on an outer circumference of a screw body, and a screw head disposed at a front end of the flight portion; a first drive unit for rotating the screw; a second drive unit for advancing and retracting the screw; a screw-advancement control unit for driving the second drive unit in an injection step in order to advance the screw at a predetermined screw speed; and a flight speed control unit for driving the first drive unit in the injection step in order to advance the flight at a flight speed that is apparently lower than the screw speed.

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: Machine for the manufacture of preforms (2) for plastic containers, comprising at least one station (10) for molding the preforms and at least one apparatus (30) for injection of the plastic into the molding station, comprising at least two stations (20) for cooling the preforms (2), symmetrically arranged with respect to the molding station (10), there also being provided conveying means (50;150) movable with an alternating movement from the molding station (10) to one of the two cooling stations (20) and vice versa for conveying the preforms (2) to the said cooling stations.

Abstract: A conduction means having conduction path for injecting molten molding material within a mold space is fitted to one of a pair of mold bodies which form the disc-shaped mold space. A first heat suppressing means for suppressing heat within the conduction path from being transmitted to the one of the mold bodies is disposed between the conduction means and the one of the mold bodies. Further, a second heat suppressing means is disposed at a position opposing to the first heat suppressing means at the time of mold-clamping the pair of the mold bodies.