摘要:
A feed method of feeding a thread wound on a bobbin to a thread drawing-in apparatus through first and second suction nozzles, comprising the steps of: advancing the thread (43) to a first position between the bobbin (42) and the first suction nozzle (45), along an axis (X-X); gripping the advanced thread (43) at the first position and then drawing the thread (43) at the first position in a predetermined direction substantially perpendicular to the axis (X-X) by a first predetermined length; gripping the drawn thread (43) at a second position between the bobbin (42) and the first position and also releasing the drawn thread (43) at the first position, and then feeding the drawn thread (43) to the thread drawing-in apparatus (44); gripping the fed thread (43) at a third position between the second suction nozzle (46) and the thread drawing-in apparatus (44) and also releasing the thread (43) at the first and second positions, and then drawing the thread (43) at the third position in the predetermined direction (X-X) by a second predetermined length; and cutting the thread (43) that has been drawn by the second predetermined length.
摘要:
An apparatus (3) for traversing a yarn along a bobbin (6), with which a contact roller (4) contacts. The traversing apparatus is disposed below a fulcrum (8) for traverse motion and comprises: a frame (10) downwardly inclined relative to the moving direction of the yarn; spindles (11-14) rotatably supported on the frame at apexes of a rectangle; first traverse blades (23, 24), spaced downwardly from the fulcrum for traverse motion by a predetermined distance and secured to the spindles (11, 12) located at backward positions, for traversing the yarn from ends of traverse stroke toward a center of the traverse stroke; and second traverse blades (25, 26), spaced downwardly from the first traverse blades by a predetermined distance and secured to the spindles (13, 14) located at forward positions, for traversing the yarn, which has been transferred from the first traverse means, from the center of traverse stroke toward the ends of traverse stroke.
摘要:
A servo control apparatus comprising: means for generating a control target; an actuator (3) adapted to drive a load (4) and having its maximum displacement in one direction and its minimum displacement in the other direction; drive means (1, 2) for driving said actuator (3); position detecting means (5) for detecting a displacement of said actuator (3); and control means (21) for correcting said control target on basis of said maximum and minimum displacements of said actuator (3) and for computing a control value so that an output of said position detecting means (5) is consistent with said corrected control target; said load (4) being controlled by said control value.
摘要:
This invention relates to a non-touch type heater for heating a synthetic filament yarn, especially a polyester filament yarn, in a false-twist texturing process while keeping the running yarn apart from a heater surface. According to the invention the heater comprises a heater body having a lengthwise groove in the surface thereof with a plurality of yarn guides being arranged in said groove so that the yarn runs along an arcuate path defined by the yarn guides. Further, according to the invention, the distance between the heater surface and the yarn path is minimum at the inlet and exit ends of the path and maximum in the middle of said path.
摘要:
An axial disturbance device used in a yarn take-up machine which includes a traversing yarn guide (44) for winding a yarn on a yarn package (41) supported on a cradle arm (42), and a cam member (82) rotatable about a fixed axis, the traverse width of the traversing yarn guide (44) being changed by the rotation of the cam member (82) about the fixed axis; comprising: an axial disturbance link (84) rotatably supported on the cam member (82) and having a cam surface (89); a cam-member tilting rod (85) connected at its one end to the cradle arm (42) of the yarn package (41) and at its the other end to the axial disturbance link (84); a cam-member stopping link (87) rotatably supported on a fixed shaft (86) and engageable with the cam member (82), the stopping link (87) being connected with the cam-member tilting rod (85); an axial disturbance bar (92) disposed and movable in parallel relationship to the cam member (82); and an axial disturbance cam (91) rotatably supported on the axial disturbance bar (92) and engaged with the cam surface (89) of the axial disturbance link (84).
摘要:
A light position sensor comprising: light emitting means for emitting a light; an optical block (27) having a magneto-optical effect element (28) mounted thereon; a movable magnetic scale (13) disposed in opposed relationship to the magneto-optical effect element (28) and having a plurality of magnetized segments (29a to 29g) mounted thereon; first optical wave guiding means for guiding the light emitted from the light emitting means; polarizing means (26) connected at its one end to the first optical wave guiding means and at its the other end to the optical block (27), the polarizing means (26) being adapted to convert the light into a light having a single plane of polarization, the single plane of polarization being rotated to a predetermined angle by the magneto-optical effect element (28) in the presence of the magnetized segments (29a to 29g); polarization detecting means (30) connected to the optical block (28) in parallel relationship to the polarizing means (26) and adapted to pass therethrough a light wherein the single plane of polarization is rotated to the predetermined angle; second optical wave guiding means for guiding the light from the polarization detecting means (30) which is connected to the polarization detecting means (30); and opto-electric converting means (32; 69, 70) for converting the light guided by the second optical wave guiding means into an electric signal.
摘要:
In traversing a yarn in opposite directions to be wound on a bobbin holder (1), the number of yarn traversing strokes is gradually decreased from the upper limit value of a yarn winding angle to the lower limit value with a gradient larger than that of a winding ratio.
摘要:
A joint driving apparatus for industrial robots, provided with a first arm (5), a second arm (12) supported pivotably on the first arm, and reduction gears (3, 40, 70, 80) adapted to reduce the rotational speed of an electric motor (1), which is fixed to the first arm, and transmit the resultant rotational speed to the second arm. The reduction gears consist of a front-step reduction gear (20) for reducing the number of rotation of the electric motor, and a rear-step planetary reduction gear (21) for further reducing the number of output revolution from the front-step reduction gear. The construction of the reduction gears installed in a robot driving system is modified so as to prevent the resonance of the driving system. A rod type member (60) is used to connect the reduction gears (20, 21) to each other and thereby reduce the dimensions and weight and increase the torsional rigidity of the robot.
摘要:
@ A guide device (20) for separating a plurality of yarn passages comprising: a rod member (24) movable in its lengthwise direction; a plurality of slide members (25a - 25d), provided with yarn guides (22) and movable along the rod member (24); the rod member (24) and the slide members (25a - 25d) are inserted into and movable along a hollow cylindrical guide rail member (21); the rod member (24) having at least a pairof guide pulleys (30), which sandwich the slide members (25a - 25d) between them; a strand-like member (28) wrapping around the guide members (30); the strand-like member (28) is connected to one of the slide members (25a - 25d) and a stationary member; connecting members (26) having engaging members (26b) at ends thereof are loosely inserted between adjacent slide members (25a and 25b, 25b and 25c, 25c and 25d); and the distance between the engaging members (26b) of the connecting member (26) is equal to the sum of the distance between the yarn guides (22) under yarn passages separating condition and the thickness of the slide member. The yarn guide (22) located at the front end of the rod member (24) is moved a distance equal to or more than twice of the moving distance of the rod member (24), when the rod member (24) is moved. The rod member (24) does not project excessively from the front surface of the machine frame, and accordingly, the operating ability of an operator around the textile machine is increased, and the guide device for separating a plurality of yarn passages is not damaged while it is operated.