摘要:
The sheet transporting device of the invention includes: a transferring device (64) adapted to transfer a sheet (30), a conveying device (66; 66A) for conveying a sheet transferred from the transferring device (64) onto the conveying device, and a controlling means (76) adapted to control the speed of the conveying device (66; 66A) and defining a transfer cycle (CT). The controlling means (76) is adapted to slow down the conveying device (66) when a sheet is conveyed by the related conveying device and to accelerate the conveying device when no sheet is present on said conveying device. The invention can be used for the cutting devices of rotary printing machines.
摘要:
The sheet transporting device of the invention includes: a transferring device (64) adapted to transfer a sheet (30), a conveying device (66; 66A) for conveying a sheet transferred from the transferring device (64) onto the conveying device, and a controlling means (76) adapted to control the speed of the conveying device (66; 66A) and defining a transfer cycle (CT). The controlling means (76) is adapted to slow down the conveying device (66) when a sheet is conveyed by the related conveying device and to accelerate the conveying device when no sheet is present on said conveying device. The invention can be used for the cutting devices of rotary printing machines.
摘要:
A transporting cylinder (54) for a flat substrate, including a cylindrical base body (70) that has a cylindrical base body surface (74) having a first material and that has openings (82) leading out onto the cylindrical surface.The transporting cylinder (54) includes a sleeve (72) arranged on the cylindrical surface (74), the covering element having a plurality of through-holes (92) aligned with at least some of the openings (82). The sleeve (72) has an outer covering surface (88) made from a second material. The outer surface (88) has a surface energy lower than the surface energy of the first material.
摘要:
The invention relates to a sheet (30) conveying device (D1, D2) comprising a transport roll (56, 58) for conveying a flat substrate (18, 30), said transport roll having a transport surface (82, 102) which comes into contact with the flat substrate and has a plurality of recesses (84, 104), and a vacuum device (64) for creating a depression in the plurality of recesses. The device also comprises a device (120) for cleaning the transport surface (82, 102). The invention is applicable to devices for ejecting sheets from printing presses.
摘要:
A rotary printing machine including a continuous web of material to be printed, the web having two sides, and at least one printing unit designed to print on the web. It includes a powdering device, designed to deposit powder on at least one of the two sides of the web printed by the printing unit. For use in magazine printing presses.
摘要:
The mould carrier unit for manufacturing containers by a stretch blow-moulding operation of preforms (3) arranged in moulds (2), comprises: on the one hand, a stretching rod (10) borne by a slide (13) which is mobile between an inactive position and an active position where its free end reaches the bottom of said mould (2), on the other hand, a nozzle (15) comprising a fixed body (16) extended by a bell (20), which is mobile under the action of appropriate means for passing from an inactive position where its free edge (25) is held substantially at the same level as the free end (11) of the stretching rod (10) to an active position where it is sealingly applied against the inlet surface (4) of the mould (2), to close the circuit of the blowing fluid, and said bell (20) comprises a bar (21) provided with a stop (23), which stop (23) cooperates with a support (24) formed on said slide (13) to permit said bell (20) to pass from its active position to the inactive position with the same law of motion as said stretching rod (10).
摘要:
The invention relates to a blowing or stretch-blowing device (1) for making vessels from thermoplastic blanks with a collar, that comprises a blowing nozzle (3) mobile between an upper position and a lower position for blowing a pressurised fluid into a blank having a body provided in the moulding cavity of a mould and having a collar protruding outside the mould, the device includes a clamping means (4) provided above the mould and capable of holding a blank by the collar thereof, a holding means (20, 21) for the clamping means for moving the same between two raised or lowered positions, wherein at least one branch (7, 8) of the clamping means being transversally mobile; mechanical coupling means (5) provided between the clamping means and the blowing nozzle and capable of synchronising the movements of the clamping means with the movement of the blowing nozzle.
摘要:
Device for moulding thermoplastic containers by the blow moulding of preforms, comprising a mould (1) and a blowing assembly (2) with a nozzle (16) that can move axially between a raised position and a blowing position in fluid connection with a preform supported in the cavity of the mould. The half-moulds (3a, 3b) of the mould bear respective parts (Aa, Ab) together forming a male element (A) bordered by a wall (12) inclined towards the nozzle. The blowing assembly bears a female element (B) formed by a clamp (26) having an internal wall (30) complementary to the wall of the protuberance. In the blowing position, the cooperation between the male and female elements (A, B) locks the upper part of the closed mould.
摘要:
This process for controlling the quantity of ink applied to a material being printed comprises the stages of: driving an inking roller (14) and a printing roller (8) at first inking and printing speeds, changing the printing speed to a second printing speed, changing the inking speed to a second inking speed on the basis of a speed correction index, measuring a first and a second quantity of ink, calculating the difference in the quantities of ink applied, and altering the speed correction parameter on the basis of the difference in the quantity of ink printed. Application to offset presses.
摘要:
The invention concerns a multifunctional electrosurgical device for treating biological tissues comprising a first member and a second member linked by a hinge allowing the members to be moved together and apart from each other; the first member comprising, at the front end of same, a first electrode for forming a first electrical contact with the tissues and the second member comprising, at the front end of same, a second electrode for forming a second electrical contact with the tissues. The first electrode has a concave cross-section, capable of partially housing the second electrode and of making the second electrode protrude from the first electrode when the two members are moved together. The device is remarkable in that the electrodes are configured to allow the formation of the first electrical contact on the outer surface of the first electrode and the formation of the second electrical contact on the protruding part of the second electrode.