摘要:
A printing machine comprises a print line along which at least one object support can move and a printhead overlying said print line at at least one printing station and twinned with another printhead disposed on standby away from said print line and with which it is interchangeable.
摘要:
An automatic bottle handling machine comprises a storage hopper for bottles in random orientation, a plurality of conveyor channels having conveyors extending between the hopper and a corresponding plurality of drop chutes and selective reversing devices for turning around neck first bottles before reaching the drop chutes. A sensor in each drop chute detects the prolonged presence of a bottle therein to stop the corresponding conveyor. A yoke member below each sensor indefinitely arrests the downward movement of an incorrectly oriented bottle or a defective bottle having a spur or flash on the bottom thereof to stop traffic in the corresponding drop chute and thereby stop the supply of bottles by the corresponding conveyor until the offending bottle has been removed by the operator. Another sensor for detecting a crushed bottle may be provided at the upper end of each drop chute for similarly stopping the corresponding conveyor.
摘要:
A `flat` silk-screen printing machine is disclosed wherein the table is reciprocably displaced along an inclined table support between a raised, advanced, printing position wherein the table is parallel to and immediately below a horizontal screen and a lowered, retracted, access position in which the table is inclined and extends forwardly of the inclined table support so that the greater part of the table protrudes outwardly of the machine, thereby providing enhanced access for positioning and removing the substrate to be printed. The table is pivotally mounted on the inclined table support and pivoted by a combination of a linkage and fluid cylinder and is attached to a belt running along the inclined table supported for translation up and down the same.
摘要:
A transfer device for a printing machine transfers an object to be printed, for example a bottle, from a feed conveyor to a printing station. The device comprises a transfer member carried by a sleeve mounted on a shaft, and means for moving the sleeve and thereby the transfer member in a movement which is partially along the shaft and partially rotational about the axis of the shaft. The transfer device may be provided on a machine for printing a succession of objects, comprising a printing station, such as a silk-screen printing station, and a feed conveyor adapted to present the objects to be printed in sequence to the printing station. The transfer device transfers the objects one by one from the feed conveyor to the printing station.
摘要:
A silkscreen printer machine (8) includes: a support structure (48); and at least one printing station (54) secured to the structure (48) and including at least one screen support (68) presenting a reception area adapted to receive a screen texture (70) having a pattern for printing placed thereon. The screen support (68) is carried by at least three support elements (78) secured to the structure (48), the support elements (78) not being in alignment and being positioned on either side of the reception area (69). The invention also provides associated printer apparatus.
摘要:
A printing machine comprises a printing station at which two shells are adapted to enclose the object to be printed, the shells being subject to a drive mechanism which acts directly on one of them, whereas it acts on the other through the intermediary of at least two movement reverser columns. The machine further comprises a conveyor equipped with at least one object-carrier support and which is mobile in order to move the support between the shells of the printing station. The conveyor is a turntable rotating about one of the movement reverser columns. Applications include the printing of synthetic material bottles.
摘要:
An offset printing head includes, mounted to rotate parallel to each other and spaced from each other on a common carriage that is itself mounted to be mobile in translation on a frame, an inking roller and a blanket cylinder. As it moves to and fro, the carriage sweeps across a plate support which receives a plate and an object support which receives an object to be printed. The inking roller and/or the blanket cylinder are each driven by an individual drive system specific to it and independent of the movement of the carriage. Applications include printing machines combining an offset printing head with a silkscreen printing head.
摘要:
An ultraviolet radiation drying oven comprises in succession along a conveyor adapted to carry the objects to be dried a loading station to which the objects must be introduced, a drying enclosure containing at least one ultraviolet radiation lamp and an offloading station from which the dried objects are evacuated. At the loading station, a masking arrangement prevents escape of ultraviolet radiation. The masking arrangement comprises a turnstile mounted to rotate above the conveyor about an axis perpendicular to the conveyor and comprising a plurality of radial panels delimiting between them airlock compartments in a similar manner to a revolving door.
摘要:
A printing machine comprises a frame and a turntable adapted to rotate on the frame to move objects to be printed along a displacement circumference. At least one silkscreen type printing head is aligned with the turntable and includes a support beam and, carried by the support beam, a screen support adapted to receive a screen and a squeegee carriage adapted to move relative to the screen support. The support beam extends along a line which is secant to the displacement circumference and is coupled to the frame at at least two points thereon disposed on respective sides of the displacement circumference. The squeegee carriage moves parallel to the support beam.
摘要:
A transfer apparatus conveys work holder supports along a closed pathway, defined by a fixed guideway, passing by at least one work station. A first, drive conveyor which is preferably an endless conveyor and operates continuously transports the work holder supports along a first segment of the closed pathway and a second, pickup conveyor which in practice operates intermittently transports the work holder supports along a second segment passing by the work station or stations. The path of the first conveyor has a section which is detoured away from the work station or stations. The work holder supports are releasable engageable with the dogs on the first conveyor and projecting pins on cranks of the second conveyor for coupling and uncoupling the work holder supports upstream and downstream of the work station or stations. The second, pickup conveyor comprises for each work station two cranks having projecting pins selectively engageable with a corresponding groove in each work holder support for selectively coupling it for displacement.