False-twisting equipment

#This invention relates to false-twisting equipment. More particularly, the invention relates to false-twisting equipment which comprises a yarn feed bobbin and heater disposed on one side of an operation space and a winding device disposed on the other side of the operation space, wherein a yarn to be processed is travelled from one side of the operation space to the other side of the operation space while passing through the upper portion of the operation space and the yarn is subjected to a treatment such as false-twisting under heating during this travel.

#In false-twisting equipments, the length of a yarn heater has been increased with elevation of the yarn travelling speed. In the case where a yarn taken out from a yarn feed bobbin is passed through a vertical first heater, there is often adopted a method in which after the yarn is taken out from the upper portion of the vertical first heater, the moving direction of the yarn is changed by a guide pin and is transferred to the opposite side of an operation space. The yarn is false-twisted by a false-twisting device disposed in the upper portion of the operation space. In false-twisting equipment of this type, the first heater has a certain length determined depending on the yarn speed and heater temperature required for setting twists, and the height of this heater is much larger than the height of a second heater or winding device disposed on the opposite side of the operation space. Accordingly, the bending angle of the yarn bent toward the operation space in the upper portion of the first heater becomes acute, with the result that propagation of twists is inhibited and the yarn speed has to be controlled to a low level.

#In this false-twisting equipment, a false-twisting spindle, a balloon control device, a cooling device and the like are disposed to treat the yarn which passes across the operation space in the upper portion thereof. Unless the yarn passes through these devices substantially in a straight line, the yarn quality is degraded.

#FIG. 1 is a front view illustrating the false-twisting equipment according to the present invention.

#FIG. 2 is a front view illustrating in detail a cooling device and a balloon control device in the false-twisting equipment according to the present invention.

#Reference numeral (50) represents an operation space in the false-twisting equipment according to the present invention, and respective elementary devices are arranged in a reverse U-shaped region surrounding the operation space (50).

#A first heater (6) is vertically disposed on one side of the operation space (50) and a winding device (17) is vertically disposed on the other side of the operation space (50). A creel (2) supporting a plurality of yarn feed bobbins (1) is arranged behind the first heater (6) and a second heater (14) is arranged behind the winding device (17). A cooling plate (9), a cooling device (10), a balloon control device (11) and a false-twisting spindle (12) are arranged in the upper portion of the operation space (50) between the upper portion of the first heater (6) and the upper portion of the second heater (14) so that a yarn Y can be guided in a straight line through these devices.

#A plurality of yarn guide tubes (3) are mounted in front of the corresponding yarn feed bobbins (1) supported on the creel (2). The lower end of each yarn guide tube (3) is opened in the vicinity of the lower end of the first heater (6) in the lowermost portion of the equipment to guide the yarn Y on the corresponding yarn feed bobbin (1) to the lower end of the first heater (6). A tension device (4) and a first delivery roller (5) are arranged between the lower end of the yarn guide tube (3) and the lower end of the first heater (6). The first heater (6) is located above these devices, and the first heater (6) is brought close to the floor so that the position of the first heater (6) is as low as possible. Reference numeral (31) represents an operation rod for opening and closing the first delivery roller (5). A guide tube (18) is supported on the front face of the first heater (6) by a supporting piece (33). An operation rod (19) having a lever 20 formed on the top end thereof, said lever (20) including movable guide pins (7) and (8), is fitted and inserted in the guide tube (18), so that when the operation rod (19) is drawn, the movable guide pins (7) and (8) are located below a stationary guide pin (32) mounted on the supporting piece (33). In the embodiment illustrated in the drawings, two movable guide pins (7) and (8) having a small diameter are disposed, but instead of these two guide pins (7) and (8), one movable guide pin having a large diameter may be arranged.