摘要:
A device for driving a weaving frame in a weaving machine, comprising a drive with a motor (4) or a geared motor (4, 7), provided with a bearing (10) on its output shaft (9), with an eccentric-shaft (2) and with a driving rod (8), wherein the drive with motor (4) or geared motor (4, 7), with eccentric shaft (2) and with driving rod (8) is provided as a driving module (1) in which the eccentric shaft (2) is supported in an abutment (3) situated in the housing (5) of the driving module (1) on the side of the eccentric shaft (2) away from the motor (4) or the geared motor (4, 7). A weaving machine which is provided with one or several of the devices.
摘要:
A novel shaft gear for harmonious engagement and disengagement of individual heddle shafts and for deriving their motion from the rotary motion of a single input shaft has a coupling system with two input elements. While one of the input elements serves to drive the output element of the coupling system permanently, the other input element serves solely to synchronize the output element briefly with the first input element. The switchover takes place in the brief synchronous phases, in selected angular regions that correspond to the top or bottom reversal point of the heddle shaft. For the switchover, such novel shaft drive mechanisms do not require any stoppage of motion for the input shaft or the shaft drive mechanism.
摘要:
In an electric shedding control apparatus, shedding patterns are stored in memories in such a manner that the shedding patterns are compressed and the time required to read the shedding patterns is shortened. An electric shedding apparatus is provided for driving each of a plurality of heddle frames independently and in synchronization with a rotation of a main shaft of a loom. Constituents of the shedding operations are set in advance, and the constituents are selected for each shedding step. Also, in order to drive the heddle frame, shedding amount instruction for the heddle frame is output in accordance with the rotation of the loom main shaft based on a shedding curve which includes the selected constituents.
摘要:
A weaving machine includes a plurality of individually adjustable heald frames for forming an upper shed and lower shed by acting on warp threads. The heald frames are coordinately controllable by a control unit. At least one shuttle transports weft threads through the upper shed and lower shed. At least one shuttle path arranged under the warp threads forming the lower shed supports the at least one shuttle. The control unit controls movement of the heald frames effected by a position adjustable unit to bring about different upwardly and downwardly directed forces on the warp threads, depending upon a desired weaving design. The control unit adapts the forces applied to the warp threads of the lower shed to the shuttle path so as to provide the at least one shuttle with clearance through the upper shed and the lower shed that is substantially unaffected by the warp threads in spite of the respective force applied to the warp threads.
摘要:
In order to deflect a warp thread sheet (2) in a weaving machine, a deflecting device (18)is provided which is guided in guides (26) that also guide heald frames (13, 14, 15, 16). The deflecting device positions a segment (46) of the warp thread sheet (2) that starts at a beatup line (7) of the fabric (8) between the beatup line and the heald frames.
摘要:
A control mechanism of a heald frame in weaving looms is disclosed, of the type including a frame hinged to an articulated linkage capable of converting the substantially rectilinear motion of a control bar into a vertical motion of the frame, characterised in that the bar is provided with a permanent magnet body and in that an electric-coil structure is further provided, in whose proximity the magnet body is intended to slide, fixed in respect of the loom and forming the armature of a linear electric motor of which the magnet body represents the mobile part. Some preferred arrangements of a plurality of such mechanisms in a weaving loom are further disclosed.
摘要:
A shed forming device (1) for a power loom has a plurality of heddle shafts, to which a drive mechanism with a plurality of servo motor groups (13, 14) is assigned. The servo motor groups are located below each of the heddle shafts (3 through 8), in each case as a cluster, and they are located with their pivot axes (27 through 32) on a circle, an ellipse, or a similar figure. They are also axially offset from one another. Each servo motor (15 through 20) is provided with a driven lever (21 through 26). The free ends of all the levers are located approximately at the center of the circle or ellipse or other figure of revolution. They are connected to the heddle shafts (3 through 8) via connecting rods (34 through 39) and form various angles with the connecting rods (34 through 39). The result is a drive mechanism with little inertia, low resilience, and little play. Very fast shaft motions can be attained in a controlled way.
摘要:
The heald shafts of a power loom are driven by electric D.C. or A.C. motors which have an external rotor or an armature connected to the respective heald shaft through two articulated couplings, for example snap locks, and a push-pull rod. The motors receive control signals from a computerized controller for reversing the motion direction of the external rotor or armature. The stators of the motors are rigidly mounted on a fixed axis secured to the loom frame.
摘要:
In a textile machine, a device for controlling the transverse movement of a thread, such as a warp thread in a weaving machine, comprises a dragging element (2) for dragging a thread (4) moving in a transverse direction, whereby said dragging element (2) is attached on both sides to a frame (10) by means of springs (6,8). The device forms a system that oscillates freely at its natural frequency. Arresting devices (12,14) can adjustably and temporarily hold the dragging element in the extreme positions.
摘要:
Apparatus containing a heald frame consisting of two heddle carrying rails and a plurality of linear drives with armature parts that are connected to the heddle carrying rails in such a way that the heald frame is guided free of play. Devices are utilized for connecting the armature parts and the heddle carrying rails. The devices comprise a plate that is secured to the heddle carrying rail and a holder that is secured to the armature part. The plate is provided with a slot, and the holder has a pin that engages the slot. The slot is dimensioned such that a compensation of the play is possible at the interface between the armature part and the heald frame in order to prevent jamming of the armature parts and the heald frame, while the slot enables a compensation in the direction transverse to the working direction of the heald frame.