摘要:
In a conjugate cam shedding machine for looms - of the type having narrow-gauge conjugate cams which cause desmodromic oscillating movements of cam followers (13) controlling the heald frames - said cams form together a movable cam block (1), apt to part from said cam followers so as to allow their free oscillation. Said machine also comprises a mechanism (14), synchronized with the parting movement of the cam block and interacting with said cam followers in a plurality of different pre-selectable ways.
摘要:
A device for synchronizing weaving machines with looms - of the type comprising a unit (16) of two coaxial clutches and an auxiliary motor (1) connected to said unit for controlling the weaving machine, through one of said clutches, when the drive between the loom and said machine is interrupted through the other clutch - comprises clutch control means in the form of a wheel (9) with face cams (9,9"), mounted coaxial and freely rotating on said clutches, but bound to the axial movements of an element (14") of at least one of the clutches. Said wheel (9) is caused to rotate by the auxiliary motor (1) together with said element (14") of said clutch and it is axially moved therewith, against the action of return spring means (17), when said face cams (9,9") of the wheel (9) cooperate with fixed cam-followers (18) placed around the clutches.
摘要:
improvements are made to members of a loom dobby control unit so as to allow structural separation between the reading unit and control unit. For this purpose, the reading unit rockers operate on the control unit by simple bearing and thrust contact with the horizontal needles which control the hook lifting rods. Moreover, the lifting blades for said rods are controlled together with the hook lowering plates by the motion of shafts which control the dobby knife oscillations.
摘要:
An improved dobby uses linkages for controlling the oscillations of the fixed and mobile knives about their axes which comprise first levers fixed to the knives, second levers fixed to control shafts, and connecting rods which link said first and second levers together to form an articulated parallelogram. In this dobby, the hook operating rods are controlled by the same shafts which control the knife oscillations, by means of an articulated joint.
摘要:
Mechanical articulation element, especially for members and components of textile machines, of the type comprising two strips (1, 2) emerging from a body of the element, a journal (3) interposed between the strips and a connection screw (4), and wherein the journal is fixed to a first of said strips and connected, with possibility of removal, to the second strip by means of the screw. In this articulation element, said journal is formed by a pair of coaxial bushes (7, 8), an internal one (8) and an external one (7), and is fixed to said first strip by riveting of the internal bush (8) on the external one (7).
摘要:
In a negative dobby for forming the warp shed in weaving looms, the stresses on some of the machine components are greatly reduced, whereby a more precise control of the heald frames is obtained, thanks to the fact that the controls transmitted to the crooks (9, 10), engaging the hooks (7, 8), by the means (12) reading the pattern of the fabric to be woven, are no longer affected by the strains deriving from the stresses imparted on said crooks (9, 10). This is obtained by operating the crooks (9, 10) by means of two-armed levers (13), controlled by the spiked roller (12) forming the pattern reading means -and connected by spring means (17) to a square arm (18) of said crooks (9, 10), the rocking movements of said crooks (9, 10) and of said two-armed levers (13) being controlled by two distinct shafts - (9A, 14).
摘要:
In a weave machine of negative type, the heald frames are controlled by means of a linkage comprising: a rigid bar controlled by said machine; a plurality of angle levers which are pivoted to the loom frame, are hinged to said bar and are connected by connecting rods to the heald frame; and spring return means acting on said rigid bar.
摘要:
Improved means are provided in a loom dobby for taking-up play in the control unit. The surfaces of the fixed and mobile blades which limit the stroke of the rocker arms in this unit are positioned perpendicular to the line joining the points of contact between the dobby hooks and knives to the mean points of contact between said blades and the rocker arms. Moreover, said surfaces are concave in the fixed blades and convex in the mobile blades. The linkage which cause the mobile knives to oscillate are in the form of false articulated parallelograms.