Abstract: An apparatus for shaping plastics material pre-forms into plastics material containers has a conveying device which conveys the plastics material pre-forms along a pre-set conveying path. The conveying device has a movable station carrier arranged at least indirectly on a stationary base carrier and on which a plurality of shaping stations are arranged. The shaping stations have blow moulding devices which form cavities inside which the plastics material preforms are shaped to form plastics material containers. The blow moulding devices are arranged on blow mould carriers. The apparatus has a changing device suitable for removing at least the blow moulding devices from the blow mould carriers and/or arranging blow moulding devices on the blow mould carriers. A changing device has a gripping device for gripping the blow moulding device, wherein this gripping device is movable in at least two different directions and is pivotable about at least three different axes.

Abstract: A blowing mould array includes a blowing mould unit forming a cavity, inside of which plastic preforms are expanded to plastic containers. The blow mould unit includes a blowing mould retainer having at least two mould retainer elements for accommodating parts of the blowing mould unit, and a locking mechanism to arrest at least one part of the blowing mould unit against at least one mould retainer element. The locking mechanism includes an engagement element that can be pivoted and/or shifted relative to a default axis, which in an arrested state abuts a segment of a part of the blowing mould unit. The locking mechanism has an actuating element to loosen the arrest between the mould retaining element and the blowing mould unit. Actuation of the actuating element is coupled with actuation of the engagement element.

Abstract: What is described is a blow-molding machine for plastic containers, comprising a plurality of platens for supporting blow mold halves, wherein at least two of the platens are in the form of movable multi-carriers for simultaneously supporting at least two blow mold halves which are assigned to different blow-molding cavities. Since the multi-carriers are driven in such a manner that at least one of the blow-molding cavities can be opened and at the same time at least one other of the blow-molding cavities can be closed by means of a continuous movement of the multi-carriers, acceleration and deceleration ramps can be reduced upon opening and closing and it is possible to gain process time for the blow molding.

Abstract: A multi shot injection molding apparatus comprising: a stationary machine platen, a first mold plate, a first injection unit connected to a first mold plate for delivering a first molding material to a plurality of first molding cavities, a movable machine frame, a carrier coupled to a movable machine platen, a second mold plate, a second injection unit for delivering a second molding material to a plurality of second molding cavities, a rotary handling unit having a first plurality of rotary handling unit mold cavity portions n and a second plurality of rotary handling unit mold cavity portions, wherein the rotary handling unit is positionable in a first position and is configured to remove the first portions of the molded parts, a first locking mechanism, a second locking mechanism, a processing station and an ejection station.

Abstract: A machine (10) for blow molding containers (100). The machine (10) has a stationary flow head (26) located proximate a turntable (12) on which molds (16) are mounted. A dwell cam mechanism (110, 120, 132) on the turntable causes the molds to accelerate ahead of the turntable, stop under the flow head to receive a parison (31), then accelerate to catch up with the turntable. This sequence allows the turntable to rotate continuously. Blow pins (30) mounted on the turntable inject gas into the molds to blow mold the parison while traveling a first path (144). Paddles (142) grip the molded containers and travel a second path (146) radially outward from the first path. The containers blow-molded from the parisons at a first station (18) are retained on the turntable after the turntable completes one full revolution and again passes the first station.

Abstract: A device for transforming parisons into containers with a plurality of transforming stations which are disposed on a movable carrier, wherein the transforming stations each have blow molds, within which the parisons can be transformed into containers by a supply of a flowable medium, and blow mold supports for holding these blow molds, wherein the blow mold supports have at least two blow mold support parts which are movable relative to one another for opening and closing the blow molds, with a clean room which is demarcated with respect to the surroundings by means of at least one wall and which at least partially surrounds the individual transforming stations, so that the transforming stations are movable within this clean room, and with at least one supply unit in order to supply flowable sterilising medium to at least one region of the transforming stations which are movable within the clean room.

Abstract: A device for producing blowmolded container products (11) from plastic material, using single mold parts (7) movable along a production line (5) and in pairs toward one another and away from one another to close or open a production mold. The container products (11) are molded and exit after the demolding procedure in the form of a container chain (9) moved along the production line (5). A demolding unit (3) engages the exiting container chain (9) outside the production mold to support the demolding procedure. The demolding unit (3) has a force drive (17) deflecting the container chain (9) out of the production line (5) into back and forth movement.

Abstract: An apparatus for cooling preformed articles, which is capable of very effectively cooling the preformed articles and is, further, capable of sufficiently suppressing or preventing the preformed articles from being locally damaged as a result of coming in contact with each other as they are conveyed neighboring one another in a state of not yet fully cooled. A spray is blown onto the preformed articles 34 conveyed passing through a predetermined conveyer passage 42, a cooling liquid is blown next thereto, and a gas stream is further blown thereto.

Abstract: The invention relates to a method and a device for blow-moulding containers from preforms which are previously heated in the region of a heating section and consist of a thermoplastic material. The preforms are transferred to a blowing device following the heating thereof, in which they are shaped to form containers by the application of a blowing pressure inside blow moulds. Said blow moulds respectively consist of at least two blow mould segments. The preforms are transported together with the blow moulds at least along part of a peripheral path of a rotating blow wheel. A separating plane of the blow mould segments is positioned at least in an opened state of the blow station in a rotational direction of the blow wheel, facing forwards, with an angle of inclination in relation to the radial direction of the blow wheel. The blow station is positioned at least in two parts during a transfer process.

Abstract: A blowing assembly is connected to a body of a blowing mechanism and has a bracket, a driving device, a mold assembly and a peripheral-supplying device. The bracket is connected to the body of the blowing mechanism and has a frame, an actuating device and a transmitting device. The frame is connected to the body of the blowing mechanism and has multiple mounting shafts, a mounting board, a second moving board and a primary moving board. The driving device is mounted on the second moving board and has a motor, a driven device and a threaded rod. The mold assembly is connected to the bracket and has a primary mold and two second molds. The peripheral-supplying device is connected to the body of the blowing mechanism over the bracket and has two mounts located at two sides of the second moving board.

Abstract: A blowing mechanism has a body, a moving device and a supplying device. The body has an annular track, a mold assembly and a mounting frame. The moving device is connected to the body and has a mounting bracket, an upper rail device, a lower rail device and a transmitting device. The mounting bracket is connected to the body. The upper rail device is connected movably to the mounting bracket and has a rail, a connecting board, a belt and two rail seats. The lower rail device is connected to the upper rail device and has an inner rail and a bottom board. The transmitting device is connected to the mounting bracket and the lower rail device and has an upper rack, a lower rack and a turning gear. The supplying device is mounted on the body and has a case, a supplying guide and a supplying arm.

Abstract: A blow molding method includes steps of moving a split mold to a parison receiving position where a parison is supplied and receiving a parison, closing the split mold, performing blow molding at a blow molding position, and opening the split mold at a product discharge position and thereby discharging a product. The method further includes steps of: sequentially reciprocating each split mold in trains of split molds provided opposed to each other across the parison receiving position to and from a position opposed to the parison receiving position; and sequentially reciprocating the split mold disposed at the position where the split mold is opposed to the parsion receiving position to and from the parison receiving position for performing blow molding. There is also provided a blow molding apparatus for carrying out this blow molding method.

Abstract: A ribbed pipe molding apparatus has a die with a plastic flow passage which carries molten plastic from an extruder to a mold for making the ribbed pipe. The plastic flow passage has a downstream flow region which exits at an acute angle through the external surface of the die. The inner wall of the end region which locates downstream of the outer wall of the flow passage in the downstream flow region of the passage has a transition wall part which is also inclined relative to the exterior surface of the die but which is sloped at a angle less than the main part of the downstream flow region of the passage. The transition wall part of the inner wall shapes the mouth of the passage so as to produce a wedging of the plastic flowing through the passage into the mold for extremely efficient production of the ribs on the pipe.

Abstract: A shuttle blow molding machine having two groups of mold units located on opposite sides of a series of workstations spaced along a horizontal workstation path. Each mold unit includes a mold that reciprocates in a direction transverse to the workstation path between a retracted position that is spaced from the workstation path and an extended position aligned with the workstation path. The mold units within each group are located in side-by-side relation adjacent each other and each group is indexed as a single unit along a path parallel to the workstation path. The transverse motion of the molds between their retracted and extended positions allows one group to be retracted out of the way while the other group advances through the workstations.

Abstract: An apparatus for the manufacture of profiled plastic pipes comprises a machine bed (1) that half shells (2, 2′) are guided on, forming a molding path (9). A driving pinion (17) is provided above the molding path (9). At least one lower driving pinion (41) is provided on the machine bed (1) along the molding path (9). A lower indentation (39, 39′) is formed in the area of the lower side (30, 30′) of the half shells (2, 2′), with the at least one lower driving pinion (41, 41′) engaging therewith.

Abstract: Shuttle blow molding apparatus having an extruder or a blow head for substantially continuously emitting a thermoplastic material in tubular or parison form at a moldable temperature downwardly along a vertical axis. A finite length of the thermoplastic material is grasped by a first mold set, which then moves downwardly with respect to the extruder or blow head to provide clearance for a second mold set to move to a position to grasp a second finite length of the emitted thermoplastic. The first mold set is then moved horizontally away to permit the emitted thermoplastic length therein to be blown into a hollow article, and thereafter removed from the first mold set that is permitted to return and engage an other finite length of the thermoplastic material. The second mold set follows the first mold set in a path of travel traced by the first mold set.

Abstract: An apparatus for producing containers with a film made of thermoplastic synthetic material, having elements for advancing, along an advancement direction, two facing strips of film made of thermoplastic synthetic material; a thermal bonding station including thermal-bonding half-molds which face said two strips of film on opposite sides thereof along the advancement direction of the two strips of film, the thermal-bonding half-molds being adapted to thermally bond the strips of film to each other at preset regions thereof so as to form thermal bond regions delimiting between the two strips of film, a plurality of pouches that are each open at a longitudinal edge end of the two strips of film; a cooling station arranged downstream of the thermal bonding station along the advancement direction and including cooling half-molds being shaped so as to carry out a film strip cooling which is limited only to the thermal bond regions; a thermoforming station, arranged downstream of the cooling station and including a

Abstract: A method and an apparatus are provided for blow-molding hollow articles. The blow-molding apparatus includes a carrousel mounted to rotate within a support frame. The carrousel carries four molds around a circular mold path. Two blow-molding work stations are disposed next to the mold path in fixed positions relative to the frame. The carrousel is indexed to cause each mold to pause by each work station one time during each carrousel revolution. The molds pause by each work station to allow blow-molding operations to be performed in conjunction with each mold at each work station. At one blow-molding work station, located at the 12:00 position of the mold path, an extruder injects parison into each mold. At the other work station, located in the 9:00 position of the mold path, a take-out mechanism extracts blow molded articles from the molds and places them upright on a conveyor.

Abstract: A method and an apparatus are provided for blow-molding hollow articles. The blow-molding apparatus includes a carrousel mounted to rotate within a support frame. The carrousel carries four molds around a circular mold path. Two blow-molding work stations are disposed next to the mold path in fixed positions relative to the frame. The carrousel is indexed to cause each mold to pause by each work station one time during each carrousel revolution. The molds pause by each work station to allow blow-molding operations to be performed in conjunction with each mold at each work station. At one blow-molding work station, located at the 12:00 position of the mold path, an extruder injects parison into each mold. At the other work station, located in the 9:00 position of the mold path, a take-out mechanism extracts blow molded articles from the molds. The carrousel is additionally indexed, i.e.

Abstract: A section of an I.S. machine for manufacturing glass containers. A gob of molten glass is delivered to a blank mold to be formed into a parison. The formed parison is then transferred to a blow mold so that an initial blowing operation can be performed to stabilize the parison. The blow mold with the stabilized parison is then transferred linearly to a final station where the parison is blown into the container.

Abstract: The present invention relates to corrugated protective sleeves (10) and for enclosing lengths of conducting equipment, such as cables, wiring and tubing, and more particularly to corrugated sleeves (10) and formed of a single piece of plastic. The corrugated protective sleeve includes an inner surface (14) and an outer surface (20) which is slit open to form male (36) and female (26) locking members which are adjoined once the conducting equipment has been inserted therein. Various methods for providing the locking areas as a part of the corrugated tubing are shown.

Abstract: An injection molding apparatus in which a hot-runner mold is moved with respect to the injection nozzle of an injection unit is disclosed. In a position in which the injection nozzle comes into contact is provided a first fixed link with a runner formed therein. A second fixed link with a runner formed therein is fixed to the hot-runner mold, and moves integrally with the hot-runner mold. Between these links is provided an intermediate runner block system, with runners formed therein. The intermediate runner block system is constructed from a first intermediate link supported rotatably by the first fixed link and a second intermediate link supported rotatably by the second fixed link, and these two intermediate links are also rotatably coupled together. This plurality of links forms a link construction, so that regardless of the movement of the hot-runner mold the resin path between the injection nozzle and the hot-runner mold is maintained.

Abstract: An apparatus for the manufacture of pipes having transverse profile features has a machine bed, on which half shells, which can be combined to form a mold, are rotatably and displaceably drivable. The half shells are pressed together on a molding path by guide rails, of which one is displaceable at right angles to the direction of production by hydraulically actuatable drives. Interlockings may be provided in addition, a locking member of which engaging with an associated locking recess.

Abstract: An annular block (3) and an annular housing (23) are arranged in a lower portion of a head unit (1). A plurality of cylinder bores (27) are arranged within the housing (23) in along its outer periphery. The cylinder bores (27) are opened inwardly and acclivously in an inner peripheral surface (26) of the housing (23). At the time of clamping actuation, pistons (28) inserted into the respective cylinder bores (27) are adapted to be advanced inwardly and acclivously. Thereupon, a flange (15) provided in the upper portion of a die (5) is pressed to a bottom surface of a receiving hole (14) provided in the block (3) by clamping members (42) of the pistons (28).

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: A corrugated mold block for a vacuum machine for molding corrugated tubes is formed of a plurality of sub-blocks rigidly secured end to end. Each sub-block has an arcuate face which is corrugated with not more than one complete wavelength of circumferential grooves and lands, and two longitudinally spaced end surfaces. A vacuum channel is provided about one of the end surfaces of each sub-block, and openings in each sub-block connect the channel and the face. When the sub-blocks are secured together into a mold block (and when mold blocks abut during molding), the vacuum channels and openings together define vacuum passages for each of the corrugation grooves, which passages are all connected to a vacuum source for drawing a vacuum during molding.

Abstract: A foamable plastic material is introduced to an extruder to produce a tubular parison of the material that is subsequently clamped between mold halves moving both axially and radially inwardly to form cavities for open mounted containers. Cavities for two containers are provided with each set of mold haves clamped together around the parison at the middle of the mold set to provide individual container cavities extending on either side of the clamped portion, said individual cavities terminating in the mouth portion of the container cavity which is joined in a mouth to mouth relationship with an individual container cavity of the next set of mold halves.

Abstract: The invention relates to an apparatus for feeding labels to a mold for plastic parts. An object of the invention is to having a pair of tie bars associated therewith for opening and closing the mold, can feed into the mold cavity labels larger than conventional labels, can also feed labels to various molds having different sizes and different heights, and which is also arranged such that the label-attachment locations and the position of labels relative to a mold can be changed when the labels are attached.

Abstract: The present invention is directed to an apparatus for extrusion blow molding polyethylene terephthalate articles. Articles produced according to this invention may be monolayer or multilayer; they may be circumferentially or biaxially oriented; and they may be heat set.

Abstract: A reheat blow mold machine includes a preform loader, an oven, a mold station and a preform transfer mechanism for transporting preforms from the oven to the mold station. A loader defines a plurality of lanes within which the preforms are supported. A reciprocal jaw assembly moves the preforms from a receiving end to a load end of the oven. The oven includes a plurality of tandemly arranged abutting pallets which rotatably support the preforms. The pallets are stepped through the oven and moved between a receiving end and a discharge end by a pair of elevators and a return conveyor. The transfer mechanism includes two sets of jaw assemblies, a pair of slidable actuators and a compensation mechanism to automatically adjust for tolerance variations in the diameter of the preforms. A mold station includes a pair of opposed platens which support mold halves. A bottom platen is positioned by a cam arrangement mounted on the opposed platens.

Abstract: An extrusion die for externally annularly ribbed seamless plastic tubing has an elongated nozzle within which a hollow mandrel is placed. The nozzle and mandrel define an annular extrusion orifice for extrusion of a parison. The orifice has a coaxial conical portion with its generatrix forming an angle of more than 45.degree. with the longitudinal axis of the nozzle for efficient filling of mold cavities corresponding to annular ribs of the formed tube. The diameter of the inner conical portion at its delivery end may be at least that of the outer portion.

Abstract: Pipe made from thermoplastic polymeric material and comprising a transversely corrugated outer wall and a smooth inner wall of constant diameter fusion welded to the inner crests of the corrugations of the outer wall is produced by an improved method involving simultaneous extrusion of two tubes, blow molding of the outer wall and fusion of the two walls while the inner wall is supported by an internal shaping and cooling mandrel. Even when the polymeric material is polyvinyl chloride, good fusion welds and lack of brittleness are achieved by the manner in which extrusion is carried out, control of the location at which the fusion welds are established, and the extrusion formulation. The finished pipe is characterized by the fact that, when the fusion welded areas have been cut for inspection, no line of demarcation between the materials of the two walls can be observed.

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: An in-mold labeling device for blow molding machines which includes a carriage assembly which moves a labeling head between a position in registry with a label storage magazine to a displaced position in registry with a cavities of molds. The labeling head includes a pick-up arm which is pivotable and supports a self aligning pick-up pad which carries one or more vacuum cups. In operation, the carriage assembly moves to a first position where the pick-up arm is pivoted to place the vacuum cups in contact with a label carried by the storage magazine. The pick-up arm is then pivoted back to pull off a label, and a slide is moved to position the labeling head into registering with an open mold. The pick-up arm is again pivoted to deposit the label in position onto the inside surface of the mold cavity and is maintained in that position through vacuum ports within the mold.

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

Abstract: A corrugator for molding externally ribbed and corrugated thermoplastic pipes, including two trains of moldblock halves circulating respectively in two endless paths and cooperating with each other to form a travelling mold for the thermoplastic pipes. The halves of one train are biased in relation to and overlap those of the second train along the travelling mold and are provided with intermeshing elements hooking the halves of the two trains together.

Abstract: Apparatus for making a bottle carrying handle comprising a substantially irregular elongated body which is tubular-shaped configurated at its middle part, the body having at least two ends, each end defining a hook carrying portion formed by a planar surface which is cut in a "U" shape configuration. The cut forms two supporting legs and each lug includes bottle neck retaining means. The apparatus for manufacturing the handle comprises a plurality of moulds and countermoulds, each mould includes a "U" shaped central cavity and each lug of the "U" has a "U" shaped recess. One of the lugs includes an "L" shaped recess which is aligned with respective projections provided in the associated countermould of the set, these projections are spaced apart by small spaces.

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: 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: 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: 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: 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: In accordance with the present invention, there is provided an injection stretching blow molding machine comprising a base secured onto a machine bed, a top plate positioned above said base and connected to said base by means of a plurality of tie rods in the peripheral edge, a movable plate slidably inserted through said tie rod and disposed movably up and down between the base and the top plate, a clamping plate above the movable plate, a transfer plate at the undersurface of said movable plate and rotable at predetermined intervals by a drive device provided in the central portion above the movable plate, the required number of hold molds consisting of split molds mounted on the undersurface of the transfer plate, said hold molds being opened and closed in a radial direction, an injection cavity and a blow cavity on the base closed in connection with said hold molds, an injection core and a blow core mounted at the lower side of said clamping plate and closed in connection with the hold molds from openings

Abstract: An in-mold label dispenser (22) for a blow molding machine is disclosed as including a dispensing head (56) mounted for rectilinear movement along a first axis A between a label magazine (48) and an open mold (28) and having a label carrier (58) mounted on the dispensing head for rectilinear movement between retracted and extended positions along a second axis B transverse to the first axis A. Rectilinear movement of the dispensing head (56) along the first axis A and coordinated extending and retracting rectilinear movement of the label carrier (58) along axis B transfers a label (50) from the magazine (48) to the mold (28) in preparation for the blow molding operation. The label dispenser (22) has particular utility when provided with a pair of the label carriers (58) to simultaneously transfer a pair of labels (50) to the open mold (28) within the confined space limitations involved.

Abstract: An in-mold label dispenser (10,10') for supplying labels to a plastic blow molding machine (12) is disclosed as having a dispensing head (36) on which a first locator (40) is mounted so as to be moveable from a withdrawn position at one side of the mold to an inserted position between open mold sections (16) and into engagement with a second locator (42) mounted at the other side of the mold. The engagement of the first and second locators from opposite sides of the mold provides accurate location of the dispensing head (36) during movement from a mold aligned position to a label transfer position to provide transferring of the labels (34) to the mold from one or more label magazines (30). First and second supports (48, 50) on which the locators are mounted are moved by first and second actuators (52,54) to provide the movement between the mold aligned and label transfer positions.

Abstract: Blow molding apparatus wherein halves of a split mold are carried by mold carriers. The mold carriers normally include one fixed mold carrier and one movable mold carrier which is positioned by way of a cam follower and associated cams. When the mold closes, the mold carriers come into closed relation with respect to one another. The mold carriers are provided with locking flanges which are engaged by C-shaped retaining members so as to prevent the material separation of the mold carriers. Then a pressure pack within the mold carriers is expanded so as to clamp the mold halves together. A simplified linkage is provided for, in conjunction with a cam follower and cams, to move the retaining members between retaining positions and release positions. The cams are mounted for adjustment normal to the direction of movement of the mold carriers and may be adjusted in that normal position to compensate for adjusted positions of the mold carriers in accordance with different size molds.

Abstract: Disclosed is an improved hand-over-hand blow molding machine and the method for forming a chain of hollow, shaped article bodies of biaxially oriented, normally highly crystalline thermoplastic material from a tube of said material in substantially unoriented condition, but at an orientation temperature. The machine and method are characterized by an additional blow mold in tandem with one of the blow molds of the prior art two mold machine and method. The machine is operated so that each longitudinally stretched portion of the tube on which the mold pieces of each blow mold closes has substantially the same extent of longitudinal stretch or elongation. This is done by arresting the travel of the tube into the machine according to the distance of travel of the blow mold pulling it into the machine.

Abstract: An in-mold label dispenser (10) for a plastic blow molding machine (12) is disclosed as including a base (24) on which label magazines (26) are mounted along with a subbase (34) which is moved by a first actuator (40) between aligned and transfer positions with respect to open mold sections (16) of the mold (14). A shuttle (42) of the dispenser has label carriers (44) thereon and is movable with the subbase movement as well as being movable toward and away from the mold (14) by a second actuator (46) that moves with the subbase under the operation of the first actuator (40). An enlongated support (36) preferably mounts the shuttle (42) for sliding movement under the impetus of the second actuator (46) between a withdrawn position adjacent the label magazines (26) and an inserted position where the labels received by the label carriers (44) are aligned with cavity sections (18) of the mold to deposit the labels upon operation of the first actuator (40).