Abstract: The device for blow molding of a thermoplastic material contains a heating device for tempering preforms and a blow device for blow forming the preforms into a container. For controlling at least one blow station provided in the region of the blow device at least one preloadable control disk is provided. The control disk is preloaded relative to a carrier disk by at least one pneumatic spring and is connected to a pressure relief device allowing pressure free maintenance.

Abstract: A rotary plastic blow molding machine (20) including a base (22), a wheel (24) mounted for rotation on the base about a rotational axis A and a programmable logic controller (PLC) (100) mounted on the wheel for rotation therewith to control operation of a plurality of mold stations (40) on the wheel. The blow molding machine (20) as disclosed also has at least one sensor (62) mounted on the wheel (24) for rotation therewith to sense an operating parameter of each mold station and to generate an associated operation signal. The PLC (100) is coupled to the at least one sensor (62), processes the sensed operation signal and controls the machine (20) operation in response to the signal.

Abstract: A plastic blow molding machine (40) having a wheel (44) rotatable on a base (42) about a horizontal axis (A) includes a plurality of mold stations (90) mounted on the wheel about the rotational axis and having a pair of mold supports (94) movable toward and away from each other in a parallel relationship to the rotational axis at closing and opening stations (114,116). Operating cams (120,124) of the closing and opening stations cooperate with operating cam followers (110) of the mold stations to provide closing and opening mold movement, and locking cam followers (122,126) of the closing and opening stations cooperate with locking cam followers (112) of the mold stations to lock and unlock a lock mechanism (102) that operates directly between the mold supports (94) of each mold station so that there is no loading of the frame (46) of the wheel during the machine operation.

Abstract: The invention resides in a rotary blow molding machine in which under an extruder for extruding a parison, a turntable is arranged which has plural sets of molds mounted thereon for holding the parison therebetween and blow-molding the parison, the turntable is rotated by a motor, an annular driven gear is provided on the turntable, and one pair of idle gears are made to intervene between the driven gear and a driving gear for transmitting the rotation of the motor so as to intermesh with both the gears.

Abstract: Apparatus for separating a movable mold section from a fixed mold section includes a linkage of an elongate arm pivotally mounted at about its midpoint and having a first end pivotally secured to the movable mold section and a second end in engagement with a cam for pivoting the arm. An elongate link also has one end pivotally secured to a support and its opposed end pivotally secured to the movable mold section. The pivotal mounting points of the link are disposed between the mounting points of the arm and above them whereby upon pivoting of the arm, the movable mold section is first moved away from the fixed mold section in a straight line and then in an arcuate path.

Abstract: A rotary injection molding press having a rotatable platform with a plurality of mold blocks is disclosed, wherein a controller box containing individual temperature control units is mounted on the rotatable platform so as to reliably maintain independent temperature control of each mold block. The controller box includes a rotary coupler for providing a rotating electrical connection from the stationary frame to the controller box, wherein the rotary coupler comprises pairs of wetted electrodes connected through separated pools of mercury. Using this configuration, a highly reliable rotating connection is provided which is substantially frictionless and has a consistently low resistance. Furthermore, by locating the individual temperature control units in a single controller box positioned on the rotatable platform itself, the problem of routing the sensitive control loop signals through a rotating electrical connection is avoided.

Abstract: An injection blow molding machine construction utilizes pairs of C-shaped cut plate members to support clamps for the injection mold and for the blow mold, respectively. The injection molding frame members are angularly disposed at 60 degrees with respect to the blow molding frame members. The frame members are co-mounted at the ends of the C-shaped members to a pre-stressed central vertically disposed column or post. The respective injection mold and blow mold clamp forces are transmitted to the respective frame members and in turn to the column in a balanced manner to avoid flexure of the plate members. The present construction reduces the bulk of conventional injection blow molding machines, eliminates weldments and provides for ready assembly of the machine and ready access to the molds so as to reduce downtime.

Abstract: The present invention relates to a rotary type injection molding machine including a base plate provided in its surface with a rotary disk having hold molds at three portions on the lower surface thereof and having required core insert holes bored at stop positions of the hold molds, a support post on a machine bed vertically movably supporting the base plate and the rotary disk in the central portion thereof, the support post being intermittently rotated together with the rotary disk, a vertical clamping device on the machine bed in which one of the stop positions of the hold molds serves as an injection molding section and a clamping plate having a core mold at the lower side thereof is connected by movable tie bars on opposite sides to be positioned upwardly of the base plate, and an injection mold secured to the machine bed of the injection molding section, the base plate being movably supported by the movable tie bars and linked to the clamping device, an upper portion of the support post being carried b

Abstract: The invention relates to a blow-extruder machine possessing a frame (4) having a plane support structure (6) and supporting a wheel (10) which can rotate about its axis (12) in a vertical plane and which is equipped with moulds (14) on its periphery, the moulds being, as a function of their positions in the plane of the wheel, closed in order to create a moulding cavity (16) or open in order to receive a tubular parison (42), and an extrusion head (40) located in an area in which the opposite mould is open and intended to supply the said parison (42) according to a direction (F) which is inclined relative to the support surface (6) and downwards, the machine comprising a support (60; 70; 80) possessing a plane (P) which is inclined relative to the horizontal and which supports the support surface (6), the inclined plane (P) forming, with a horizontal plane, an acute angle (b) which is approximately equal to 90.degree.

Abstract: Apparatus for applying labels in the molds of a plastic blow molding machine of the type wherein a plurality of sets of molds are mounted on a wheel rotatable about a horizontal axis. Mold sections are moved toward and away from one another to enclose a parison, and the parison is then blown to the confines of the cavity between the mold sections. The apparatus removes labels successively from one or more magazines, and deposits labels on an endless conveyor that transports the labels to a position adjacent an open mold. The apparatus laterally transfers the labels successively from the conveyor to a position within the mold section, such that when a mold closes about a plastic parison and the parison is blown, the labels become adhered to the blown plastic article.

Abstract: A rotating shaft for intermittent rotation through predetermined angles is located in parallel to a rotation shaft of a rotor holding a plurality of split mold units, and rubber cups for adhering labels are secured to the front ends of links which are swingable about pins secured to the rotating shaft. The label is positioned upon the inner walls of the split mold halves when the same are in their open state by the combination of the intermittent rotation of the rotating shaft and the swinging movement of the links. The split mold holds the label by vacuum suction and the label is fused to a product when a highly heated plastic material is applied under pressure to the inner wall of the mold. A split mold holder is constructed so that when a slider-crank mechanism in association with a cam follower is positioned to a dead position, the clamping force is applied.

Abstract: Apparatus for converting thermoplastic blanks into shaped articles has a wheel-shaped conveyor which carries an outwardly extending link for a coupling which can engage successive blanks of a series of blanks during advancement along a first portion of its endless path. The blank is transported through a heating unit and thereupon enters the cavity of a mold to be converted into a shaped article which is removed from the mold and is delivered to an article receiving unit. The blank heating unit, the mold and the article receiving unit are respectively adjacent to second, third and fourth portions of the endless path. The conveyor can be driven at a variable speed and in stepwise fashion to be decelerated during advancement of a blank through the heating unit and to come to a halt while the blank is being converted into a shaped article. Alternatively, the link can be pivoted in and counter to the direction of rotation of the conveyor to thus accelerate or decelerate the coupling relative to the conveyor.

Abstract: An injection blow molding machine construction utilizes pairs of C-shaped cut plate members to support clamps for the injection mold and for the blow mold, respectively. The injection molding frame members are angularly disposed at 60 degrees with respect to the blow molding frame members. The frame members are co-mounted at the ends of the C-shaped members to a pre-stressed central vertically disposed column or post. The respective injection mold and blow mold clamp forces are transmitted to the respective frame members and in turn to the column in a balanced manner to avoid flexure of the plate members. The present construction reduces the bulk of conventional injection blow molding machines, eliminates weldments and provides for ready assembly for the machine and ready access to the molds so as to reduce downtime.

Abstract: An in-mold labeling method and apparatus for a blow molding machine having a primary circular multiple mold path. A continuous drive closed circuit is provided by a guide track means and forms a secondary path in which a carriage or trolley carrying an air actuated means for picking and holding a label for transport to a matched segmental transfer station at which the mold parts and the carriage move in unison at zero relative velocity during which the label is automatically deposited in a mold for application to the plastic part being formed by the mold. Thereafter, the carriage or trolley is conditioned to pick up another label. The continuous driving of both the blow molding machine and the in-mold label dispenser is synchronized for unison uninterrupted operation.

Abstract: An apparatus for feeding a label into a mold cavity of a bottom tool which can move up and down in a apparatus for thermoforming plastic containers from a film includes a feeder for the intermittent advancement of a strip of labels by a predetermined amount, a cutting means for cutting off a single label each time from the leading edge of the label strip, and transport means for transferring the single label to a final position in the mold cavity in which it lies against a side wall of the mold cavity and is held in place. The transport means is a transfer arm which grips the label strip and before the label is out off and, after it is cut off, carries it over the top edge of the mold cavity of the bottom tool while the latter is in its bottom, starting position, and lays it against one side wall of the mold cavity.

Abstract: A molding machine is provided comprising a rotary type molding machine (1) having an injection molding portion (3) for molding a preform, an orientation blow molding portion (5) provided with a blow mold (13) which receives the preform directly or after being subjected to temperature control for molding the preform into a hollow container such as a bottle by means of an orientation blow device and, a molded product removing portion (6), and a label insertion device (20) provided adjacent the orientation blow molding portion (5). The label insertion device (20) comprises a label supply device (26) positioned to the side of the blow mold, a drive device for moving the label supply device (26) forward and backward with respect to the blow mold, and a label magazine (42) disposed between the label supply device (26) and the orientation blow molding portion (5).

Abstract: Apparatus and method are provided for expanding an earlier-extruded portion (42) of extruded plastic tubing (38) or plastic parison (41) into a first container (96a), for expanding a later-extruded portion (43) of the extruded plastic tubing (38) or parison (41) into a second container (96b), for delaying exanding the second portion (43) with respect to expanding the first portion (42) into the first container (96a), and for subsequently separating the second container (96b) from the first container (96a).

Abstract: The blowing wheel and preferably the heating wheel as well as a large blow molding machine are rotatably supported in a centerfree peripheral bearing means. The heating and blow wheels are constructed as wheel rings to provide a profile free of distortion, wobbling motions or, respectively, peripheral vertical deviations of the wheels are thus prevented and the delivery of parisons of thermoplastic material for processing on the wheels takes place with high accuracy.

Abstract: The invention relates to a control means for actuating the valves for supplying pressurized blowing fluid and working fluid to the blow mold stations of the blow wheel of a blow mold machine. The blow wheel comprises a center-free wheel ring of which the outer periphery is rotatably supported on a base. Facing the inner periphery of the wheel ring there is a stationary rail on which carriages are adjustably mounted. The carriages accommodate cams for actuating the plungers of the valves mounted on the wheel ring through a yoke which provides a self-holding action. Thus, adjusting of proper valve operation is facilitated while the operation of the blow molding machine is continued.

Abstract: This invention relates to a rotary type blow molding machine which forms a working space between an intermittently rotatable transfer plate (14) above a machine bed having lip molds (15) at three locations on the lower surface thereof and the machine bed, the three locations on the machine bed of the working space forming three working stages, i.e.

Abstract: In a delivery apparatus in a machine for preparing hollow vessels by delivering mandrels supporting thereon preforms and vessels through a preform-heating zone and a draw-blow-forming zone, the downward movement of a mandrel-clamping mechanism is utilized for insertion of a preform into the mandrel and the rising movement of the clamping mechanism is utilized for withdrawal of a formed vessel. By this arrangement, insertion and fixation of preforms into mandrels and withdrawal of formed vessels from mandrels can be performed continuously, assuredly and smoothly in one apparatus while saving the waste in the blow-forming operation. If the operation of reversing the clamping mechanism is added, any particular device need not be disposed for reversing preforms.

Abstract: A rotary blow molding machine includes a plurality of mold stations on a rotary carousel. Each mold station includes a pair of mold sections movable toward and away from one another to close or open the mold sections. When closed, the mold sections define a mold blowing cavity and a mold mouth communicating with the blowing cavity and opening external of the closed mold sections. A blowing/neck finishing mechanism preferably is mounted on one of the mold sections for movement between a retracted position where the blow pin is offset from the mold mouth so as not to hinder capturing of the parison in the mold station and a blowing position where the blow pin is inserted in the mold mouth. A pivotal linkage moves the blow pin in an arcuate path toward the mold mouth to insert the blow pin therein to blow a parison received in the blowing cavity and away from the mouth to extract the blow pin from the mouth after parison blowing.

Abstract: The blow molding machine includes a rotary carousel having a plurality of mold stations thereon with each mold station including a pair of openable and closeable mold sections. A rotary take-out mechanism removes a blown article from each pair of mold sections as they pass the take-out mechanism. In particular, the take-out mechanism includes a take-out member inserted into the blown article to grip same while the mold sections are closed. The take-out member is carried on a turret arm rotated in oscillatory manner about the axis of revolution of the carousel and in synchronism therewith to cause the inserted take-out member to follow rotation of the mold sections as they are opened. When the mold sections are sufficiently opened, the take-out member is rotated about another axis so as to remove the blown article from between the opened mold sections. The take-out member is carried on a spindle that is rotatably indexable on the turret arm about the other axis.

Abstract: This relates to an apparatus for applying labels to inner and outer mold halves of a Ferris wheel type blow molding machine. Most particularly, it relates to the substitution of extensible fluid motors for rotary motors wherein a saving of transverse dimensional spacing results, thereby permitting the two label transfer apparatuses to be in closer circumferentially adjacent relation and thereby permitting the proper timing of the applications of labels to relatively short blow molds. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of the application.

Abstract: In the method of making hollow plastic articles wherein a label is positioned in each of a plurality of spaced partible molds in a predetermined array, preforms are positioned in each set of partible molds and the molds are closed and the preforms are blown outwardly to the confines of the molds to apply the label to the resultant hollow plastic article, the method which comprises providing labels on a roll of labels, successively die cutting the labels from the web of the roll and simultaneously delivering each label directly to an endless vacuum conveyor, indexing the endless vacuum conveyor to provide an array of labels on the conveyor which corresponds in spacing to the spacing of the array of molds, engaging the array of labels on the conveyor and removing them from the conveyor and depositing the array of labels in the array of molds.

Abstract: An apparatus for preparing a drawn heat-set plastic hollow vessel, which comprises a rotary member having a plurality of openable-closable blow-forming and heat-setting molds and preform-supporting mechanisms corresponding to said molds, a preform supply mechanism for supplying a preform maintained at a drawing temperature into the mold of the rotary member at the opening position and a vessel withdrawal mechanism for withdrawing a drawn and heat-set vessel from the mold of the rotary member at the opening position, wherein the rotary member comprises a mold-heating mechanism for maintaining the molds at a heat-setting temperature through the entire rotation course of the rotary member, an opening and closing mechanism for closing the molds after passage through the position of the preform supply mechanism and opening the molds before arrival at the position of the vessel withdrawal mechanism, a sealing member capable of reciprocating relatively to the preform supported by the preform support mechanism while

Abstract: An in-mold labeling apparatus is disclosed for a blow molding machine having a primary circular multiple mold path. A continuous drive closed circuit is provided by a guide track means and forms a secondary path in which a carriage or trolley carrying an air actuated means for picking and holding a label for transport to a matched segmental transfer station at which the mold parts and the carriage move in unison at zero relative velocity during which the label is automatically deposited in a mold for application to the plastic part being formed by the mold. Thereafter, the carriage or trolley is conditioned to pick up another label. The continuous driving of both the blow molding machine and the in-mold label dispenser is synchronized for unison uninterrupted operation.

Abstract: A preform transfer assembly for continuously transferring preforms from a pair of injection assemblies to a blow molding machine comprising a base supporting the mold assemblies, a frame assembly on the base, a slide plate slideably mounted on the frame, first actuator means mounted on the frame for raising and lowering the slide plate, a swing bracket assembly pivotally mounted on the slide plate and actuated by second actuator means also mounted on the slide plate rotating the swing bracket, an arm having one end attached to the swing bracket and the other end of the arm attached to a preform carrier assembly, third actuator means mounted on the arm for extending and retracting the arm in a horizontal direction, and grasping means attached to the carrier for engaging and releasing preforms whereby as the preforms are released out of the molds they are grasped and transferred to a blow molding machine.

Abstract: An arrangement for opening and closing mold halves of a blow mold is disclosed. The blow mold generally forms part of a stretching and blowing machine for blow-molding hollow bodies from thermoplastic plastics materials.The mold halves are coupled to driven rocker arms, which are driven by driving rocker arms of a four-link gear, the pivot of the four-link gear being disposed immediately at the end of the common pivotal axis of the mold halves.The driving rocker arm of the four-link gear is formed by cylinders, which are provided with cam tracks on their external curved surfaces in which rollers mounted on a sliding cam controller travel.

Abstract: A rotary blow molding machine includes a base, a turntable on the base rotatable about a vertical axis and a number of mold units spaced around the turntable. Each mold unit includes a pair of mold halves which close on and capture a growing vertical parison at an extrusion station and then fall away from the parison as the parison is severed. The captured parison is blow molded and cooled as the blow unit is rotated around the turntable. The finished article, commonly a bottle, is ejected from between the mold halves before the mold halves return to the extrusion station.

Abstract: A mold device for molding a preform in which a lip mold is provided on the lower surface of a transfer plate rotatably mounted above a machine bed, and the lip mold is moved up and down together with a core mold to carry out opening and closing a mold without vertically moving the cavity mold with respect to the lip mold or without vertically moving the transfer mold together with the lip mold with respect to the fixed cavity mold.

Abstract: An apparatus for preparing a drawn heat-set plastic hollow vessel.

Abstract: This relates to a blow molding machine of the type for blow molding large articles such as containers of the one gallon to five gallon size from a parison in the form of an extruded plastic material tube. The machine is of the rotary type and has a plurality of stations each carrying a mold unit of which one half is fixed and the other is mounted for radial movement between open and closed positions. The main shaft of the machine is of a large diameter and is tubular so that the necessary manifolding for gas and coolant supplies may be readily incorporated in the main shaft in an entirely different manner from that heretofore utilized. Also, among other features of the machine, is the provision of hollow spokes which serve not only to support outer mold halves for radial movement, but also serve as manifold accumulators for the necessary operating gases.

Abstract: An improved take-out assembly for removing workpieces from a blow molding machine particularly adapted for blow molding machines having a continuously rotating turn table which rotates about a horizontal axis. The take-out assembly includes a turntable with a plurality of extending pick-up units having suction cup type engaging pads at their ends. Rotation of the take-out assembly turntable is coordinated with the blow molder turntable such that a suction cup pick-up unit is positioned to engage a workpiece at the desired work station. The pick-up units are radially movable to extend and retract to provide clearance during rotation and to properly engage the workpiece at the discharge station. A rotary timing valve is used to conduct a vacuum source to the individual pick-up heads at the desired point in the operating cycle of the take-out assembly.

Abstract: The present invention provides a new injection stretching blow molding machine in which supporting of a base plate is made possible from both peripheral edge portion and central portion of the base plate merely by chaning the shape of a rotary disk, and the number of tie bars for a mold clamping device may be increased to execute high pressure mold clamping.

Abstract: A molder for molding double-layered preforms in an injection, stretching and blow molding machine wherein a plurality of neck molds which also serve as a member for holding preforms and molded articles are mounted at given intervals on the undersurface of a transferring platen provided above a machine base and which is intermittently rotated so that the neck molds can be opened and closed, and devices required from injection molding of preforms to stretching and blow molding are disposed at stopping positions of said neck molds.

Abstract: The present invention provides an injection and blow molding machine which comprises a machine bed having five operating sections, i.e., an injection molding section, a temperature control section, a stretching and blow section, a secondary working and releasing section and a releasing section, a base plate mounted in a peripheral portion above and parallel to said machine bed, a rotary disk rotatably mounted on the under-surface of said base plate and having neck molds of the same number as that of the operating sections, and a drive means fixedly mounted on the central portion of the base plate to intermittently turn the rotary disk with respect to the respective operating sections. It is of course that between the rotary disk and the machine bed, there are provided an injection mold disposed movably up and down, a temperature control member, a blow mold and a mechanism for opening and closing the blow mold, which are disclosed in U.S. Pat. No.

Abstract: A blow-molding apparatus for molding hollow articles is disclosed, which comprises a base member, and a platform mounted thereon. An extruder is provided which has a nozzle located above the platform. Bearings are attached to the upper surface of the platform, and support a shaft. A mold opening/closing device is pivotable mounted on the shaft, and comprises a main body, a pair of mold halves supported by the main body, and a mold-moving unit for moving the molds toward and away from each other. The apparatus further comprises a device for rotating the mold opening/closing device around the shaft, thereby to incline the device at an angle, within a predetermined range, to the horizontal plane. Thus, both mold halves can be inclined, thereby forming an inclined cavity when they are clamped together. A parison can be supplied smoothly from the nozzle into the inclined cavity, under its own weight.

Abstract: The present invention provides an injection stretch blow molding apparatus in which a peripheral edge of a flat preform forms the edge or lip portion of a cup-like container. A securing or grip mold and a core mold are brought together to form the lip. The securing or grip mold is carried on the underside of a rotary transfer disk. The peripheral edge of the preform is sandwiched in between a shoulder formed at the lower end of a blow core and the securing or grip mold when stretch blow molding is performed, resulting in a cup-like container. The finished container is then removed upwardly from the securing or grip mold.

Abstract: A continuous molding machine comprises a rotatable wheel that carries a plurality of fixed dies, each of which is aligned with an axially movable die within a peripheral surface to form pairs of molding dies. A strip of uncured material is movable between each pair of molding dies at a molding station. As the wheel rotates each pair of molding dies through a molding station, the molding dies are closed upon the uncured material to form a molded article. A shoe is fixedly-mounted adjacent the molding station and is slidable with respect to the peripheral surface of the rotating wheel to communicate with passages which lead from the peripheral surface of the rotating wheel to the insides of the molding dies. During die closing, vacuum is applied to the shoe to remove air from the molding dies.

Abstract: This invention discloses an injection blow molding machine comprising a circular rotary disk rotatably mounted on the underside of a base plate, the rotary disk being connected to an intermittently rotating and driving device installed on the central portion of the base plate, the required number of hold molds also serving as a mold for molding a mouth portion of a container being molded, the hold molds being provided at regular intervals on the undersurface of the rotary disk, a clamping device for an injection mold and a clamping device for a blow mold provided at stop positions of the hold molds so that the clamping devices are located vertically above and below the base plate. The base plate holding the rotary disk is secured to the peripheral edge of the machine bed, and the interior of the machine bed is formed into a molding operating space.

Abstract: A temperature control blow molding equipment which has a temperature control mold and a blow mold on one seat body and which is used in an injection stretch blow molding machine comprising a disk-like moving plate intermittently rotatably disposed above a base disk, a plurality of neck molds provided at regular intervals under the carrying plate, and operation zones disposed at stop positions of the neck molds, the operation zones being necessary for a series of treatments from an injection molding of a parison to a removal of a molded article.

Abstract: A multi-station rotary blow molding machine having a plurality of separable blow molds angularly arranged in a serial fashion in a circular array within the machine. Each mold is comprised of two mold sections mounted for simultaneous movement toward and away from one another in a direction generally parallel to the rotational axis of the machine. An air supply manifold is provided for supplying air for both blowing articles and controlling certain portions of the molding machine for predetermined portions of a revolution of the molding machine. The mold sections are cooled in groups, each of the sections having an internal fluid path with adjacent mold sections being interconnected so that cooling fluid is passed serially between adjacent mold sections of each group.

Abstract: Apparatus is provided for straightening a parison tube (58b) in an apparatus of the type in which thermoplastic tubing (48) is extruded into open halves (24 and 26) of a blow mold (22) and a parison tube (58b) is severed from the thermoplastic tube (48) concurrently with the blow mold being rotated around an axis (28). The present invention orients the curvature of the parison (58b) in a predetermined plane (52) by accelerating the parison tube (58b) transversely to the axis (90) of the parison tube (58b); and then the parison tube (58b) is straightened by applying jets of air (76) against the neck and moil portion (68) of the parison tube (58b), thereby straightening the parison tube (58b), and thereby preventing the neck and moil portion (68) of the parison tube (58b) from being pinched between the mold halves (24 and 26) in the area of the neck and moil cavity (38).

Abstract: Apparatus for applying labels in the molds of a plastic blow molding machine of the type wherein a plurality of sets of molds are mounted on a wheel rotatable about a horizontal axis and the molds are moved toward and away from one another to enclose a parison and the parison is then blown to the confines of the cavity between the mold sections which comprises removing labels successively from one or more magazines, depositing the labels on an endless conveyor which transports the labels to a position adjacent an open mold and laterally transferring the labels from the conveyor to a position within the molds such that when a mold closes about a plastic parison and the parison is blown, the labels become adhered to the blown plastic bottle.

Abstract: Apparatus for extruding and reshaping plastic tubes including cooperating circulating molds attached to continuous belts or chains. The molds circuits at generally constant level. A wheeled carriage is provided to support the molds and to permit axial adjustment of the molds relative the extruder nozzle. Means also is provided for vertical adjustment of mold support means.

Abstract: This invention relates to a rotary type injection molding machine in which plural sets of molds are set on a turntable provided on a machine bed, and molding of articles by injection of synthetic resins and releasing of molded articles are carried out at different positions. The molding machine is designed so that even if the mold is provided with a runner passage, the injection apparatus can be opposed to the clamping direction to cast the resins without being affected by the runner passage, and even in molding articles having threads internally thereof, a releasing means need not be provided for each mold.

Abstract: Apparatus and method are provided for straightening a parison tube (58b) in an apparatus of the type in which thermoplastic tubing (48) is extruded into open halves (24 and 26) of a blow mold (22) and a parison tube (58b) is severed from the thermoplastic tube (48) concurrently with the blow mold being rotated around an axis (28). The present invention orients the curvature of the parison (58b) in a predetermined plane (52) by accelerating the parison tube (58b) transversely to the axis (90) of the parison tube (58b); and then the parison tube (58b) is straightened by applying jets of air (76) against the neck and moil portion (68) of the parison tube (58b), thereby straightening the parison tube (58b), and thereby preventing the neck and moil portion (68) of the parison tube (58b) from being pinched between the mold halves (24 and 26) in the area of the neck and moil cavity (38).

Abstract: This relates to a blow molding machine of the type for blow molding large articles such as containers of the one gallon to five gallon size from a parison in the form of an extruded plastic material tube. The machine is of the rotary type and has a plurality of stations each carrying a mold unit of which one half is fixed and the other is mounted for radial movement between open and closed positions. The main shaft of the machine is of a large diameter and is tubular so that the necessary manifolding for gas and coolant supplies may be readily incorporated in the main shaft in an entirely different manner from that heretofore utilized. Also, among other features of the machine, is the provision of hollow spokes which serve not only to support outer mold halves for radial movement, but also serve as manifold accumulators for the necssary operating gases.

Abstract: A blow molding apparatus wherein a plurality of circumferentially spaced sets of molds are provided for rotation about a horizontal axis and plastic material is extruded in tubular form between the mold sections of each set of molds and the molds are closed and the portion of the plastic within each mold section is blown to form a hollow article, a slide assembly for mounting the radially outermost mold section of each set of molds comprising a base, a slide on the base providing a mold support for one mold section and adapted to move radially toward and away from the other mold section associated with the section supported by the slide, a cam follower slidable upon the base and linkage between the cam follower and the slide operable to provide a rapid movement of the mold support radially inwardly and radially outwardly as the cam follower follows an annular cam in the machine.