Abstract:
Blow-molding machine for blow-molding plastic containers with at least one blow-molding unit for stretch blow-molding preforms by means of compressed air, wherein the blow-molding unit has a force equalization means, such that at least part of the compression force which occurs is compensated for, wherein the blow-molding unit comprises a pressure piston and pressure cylinder.
Abstract:
A device and method for moving a mold clamp assembly of a molding apparatus between and open and closed position when the molding apparatus is in a stationary position. The device includes a rotatable cam member. A first cam surface is provided on the rotatable cam member. The first cam surface cooperates with a cam follower of the mold clamp assembly to move the mold clamp assembly to the open position when the rotatable cam member is rotated. A second cam surface is also provided on the rotatable cam member. The second cam surface cooperates with the cam follower of the mold clamp assembly to move the mold clamp assembly from the open position to the closed position when the rotatable cam member is further rotated.
Abstract:
Machine for forming containers (3a), comprising a unit (2) for extruding tubes (3) made of plastic, associated with an electric extrusion motor (200), a blowing unit (5) associated with an electric blowing motor (500), a mould (4) for containing the containers (3a), formed by two half-moulds (4a,4b) movable, upon operation of an associated electric mould motor (400), in a longitudinal direction X-X, the unit formed by the mould (4) and by the associated mould operating motor (400) being displaceable, upon operation of an electric displacement motor (300), in a transverse direction (Y-Y) from a first position substantially aligned with the extrusion unit (2) into a second position substantially aligned with the blowing unit (5) and vice versa, comprising at least one base power supply/recovery module (2000) and at least one first control module (2300) connected to said displacement motor (400) for controlling the acceleration/deceleration thereof.
Abstract:
A container treatment machine with at least one gripper, which can be compulsorily transported along a predetermined transport section for handling a preform or container during transport and/or acceptance and/or delivery, and including, at a holder retaining at least two gripper claws, at least one controllable electric or magnetic drive for the gripper claws, where the gripper claws can be moved relative to each other in opening and closing directions and at least between defined gripping and release positions, and where each gripper claw can be individually separately actuated by the drive in the opening and/or closing direction relative to another gripper claw of the gripper. Alternately, both gripper claws can be actuated together in the same direction.
Abstract:
A fluid cylinder actuator assembly is provided. The assembly includes a cylinder tube and a cushion control needle assembly. The cushion control needle assembly is configured to extend into the fluid cylinder actuator assembly to control fluid that exits the cylinder tube and comprises: a threaded cushion control differential screw that selectively screws into a retainer having corresponding threads; a control needle that includes a stem selectively extendable through a bore in the retainer opposite of the cushion control differential screw; wherein the stem of the control needle is engageable with a threaded bore inside the cushion control differential screw that is complimentary to the threads formed on the stem so that rotating the threaded cushion control differential screw will selectively extend or retract the control needle back and forth; and wherein threads of the threaded cushion control differential screw is different than the threads in its threaded bore.
Abstract:
A machine (10) for blow molding containers (110). The machine (10) has a stationary flow head (26) located above a turntable (12) with molds (16) mounted on carriages (38). The carriages (38) are mounted on ramps (40) and are raised to remove containers (110) and are lowered from the flow head (12) using a closed loop hydraulic system actuated by a cam. A double rack-and-pinion assembly (78) guides opening and closing of the molds (16) and a locking system having locking shafts (94, 96) engaging apertures (98, 100) in a cross head (74) with pivoting locking keys (102, 104) movable into alignment with the apertures (98, 100) prevents inadvertent mold opening. A container transfer device (32) has inflatable bladders (140) which engage the interior of the containers (110) to prevent damage. Augmented cooling of the containers (110) in the mold (16) is provided by positioning the flow head (26) at an acute angle (28) to the transfer device (32). Different molds (16) may be positioned on the turntable (12) in an alternating arrangement to facilitate production changeover.
Abstract:
A mold-conveying device for an plastic blow-molding machines includes a machine base and an auxiliary mold base. The machine base is located under a main mold base for positioning the lower mold of a shaping mold thereon, provided with plural correcting rods fitted in correcting rod holes in the bottom base of the auxiliary mold base. Further, a power member is provided under the auxiliary mold base for raising or lowering the auxiliary mold base, and the auxiliary mold base is provided with a transmitting device having a transmitting member to match with a rack provided in the machine base for shifting the auxiliary mold base rightward and leftward in accordance with the blow-molding movements of the plastic blow-molding machines for carrying out mold conveying.
Abstract:
A blow molding system for a thermoplastic blank which is supported in a mold. The system includes a fixed tubular body connected to a high-pressure fluid source and, at the lower end thereof, supporting moveable equipment consisting of a tuyere, the tuyere being defined laterally by a terminal sleeve of the moveable equipment and the bottom thereof being the front wall of the body, wherein the lateral inner wall of the sleeve is configured in such a way that the pressure of a fluid inside the tuyere does not result in a reaction force component on the lateral wall, which is directed opposite to the wall of the mold.
Abstract:
A mold-conveying device for an plastic blow-molding machines includes a machine base and an auxiliary mold base. The machine base is located under a main mold base for positioning the lower mol d of a shaping mold thereon, provided with plural correcting rods fitted in correcting rod holes in the bottom base of the auxiliary mold base. Further, a power member is provided under the auxiliary mold base for raising or lowering the auxiliary mold base, and the auxiliary mold base is provided with a transmitting device having a transmitting member to match with a rack provided in the machine base for shifting the auxiliary mold base rightward and leftward in accordance with the blow-molding movements of the plastic blow-molding machines for carrying out mold conveying.
Abstract:
A rotary machine for producing recipients made of a thermoplastic material by drawing and blowing performs by a molding device which is provided with an openable mold and a movable drawing rod, a device for supporting and driving the drawing rod, which is embodied in such a way that it is mechanical and includes a power take-off device for generating, on the basis of a monodirectional rotary rotation, two rotary motions of given angular amplitudes of a rocker in two predetermined angular places of a merry-go-round path and a device for converting the two rotary movements of the rocker into two opposite linear alternately descending and ascending displacements of a drive unit connected to the drawing rod.