Draw-texturing apparatus

Claim 2

A draw-texturing apparatus for synthetic fibers of the type comprising a supply roller supplying an undrawn yarn, a drawfalse-twisting body proper which comprises a first heater, a false-twisting means for imparting twist to the yarn, a first delivery roller rotating at a peripheral speed greater than that of the supply roller and drawing and supplying the yarn, a second heater and a second delivery roller advancing the yarn to a takeup means, the improvement comprising an intermediate floor, said body proper being arranged through and beyond said intermediate floor, package supply means located on said intermediate floor in opposing relation in the upper portion of said body proper, a first operational floor formed between said package supply means and the upper portion of said body proper, an apparatus base floor, take-up means placed on the apparatus base floor in opposing relation in the lower portion of said body proper and a second operational floor provided with yarn passages underneath formed between the lower portion of said body proper and said take-up means.

Claim 3

A draw-texturing apparatus according to claim 1 further comprising truck transferring passages mounted on said intermediate floor, wherein said package supply means is composed of creel trucks conveyed on said truck transferring passages.

Claim 4

A draw-texturing apparatus according to claim 1 further comprising a threading-up device containing two interconnected movable yarn guide members one each of which is provided at the upper and lower end portions of said first heater, whereby said yarn guide members are adapted to move simultaneously due to the interconnection therebetween.

Claim 5

A draw-texturing apparatus according to claim 3 wherein said threading-up device consists of an upper yarn guide means for introducing a yarn to said first heater and a lower yarn guide means for introducing the yarn to said false-twisting means, said upper yarn guide means comprisinG a block mounted fixedly on said body proper, a first yarn guide member pivoted on said block, and a yarn controlling member for transferring said first yarn guide member successively from a rest position, to a preparing position and to a normal operating position, said lower yarn guide means comprising a block mounted fixedly on said body proper,a second yarn guide member pivoted on said block and a second yarn controlling member for transferring said second yarn guide member from a rest position to a normal operating position, an actuation rod provided in a substantially upright condition connecting said first and second yarn controlling members for simultaneously actuating said first and second yarn controlling members, said actuation rod being transferable from a rest position successively to a first, second and third positions for displacing solely said first yarn guide member to the guide position thereof by transferring said actuation rod to said first position and for displacing solely said first yarn guide member to the normal operating position thereof by transferring said actuation rod to said second position and for displacing solely said second yarn guide member to the normal operating position by transferring said actuation rod to said third position while said first yarn guide member is retained at the normal operating position.

Claim 6

A draw-texturing apparatus according to claim 1 wherein the driving system of said apparatus comprises a main electric motor for driving the yarn advancing system a second electric motor for driving the false-twisting system, and a generator mechanically connected to said main motor for providing electric current to said second electric motor.

Claim 7

A draw-texturing apparatus according to claim 5 wherein said driving system comprises an auxiliary electric motor, for use at the time of the threading-up operation mechanically coupled in parallel with said main motor.

Claim 8

A draw-texturing apparatus according to claim 6, further comprising current limiting means connected in series with said main motor for reducing the speed of said main motor after said threading-up operation and during a starting -up operation, and switch means connected in parallel with said current limiting means for bypassing said current limiting means following the starting-up operation.

Claim 9

A draw texturing apparatus according to claim 5, wherein the generator comprises a field winding, the apparatus further comprising means for providing a field electric current to said field winding independently of the flow of electric current to said main motor, whereby said generator operates as an electric braking system in response to the deenergization of said main electric motor.

Claim 10

A draw-texturing apparatus according to claim 1 wherein said supply roller positioned at the upper portion of said body proper is a roller provided with a rough surface.

Claim 11

A draw-texturing apparatus according to claim 1 further comprising a yarn breakage detecting means between said second delivery roller and said take-up means, for providing a yarn breakage signal and means for stopping the supply of the undrawn yarn from said package supply means in response to the signal from said yarn breakage detecting means at the time of yarn breakage.

Claim 12

A draw-texturing apparatus according to claim 1 wherein said first heater is of contact type and said second heater is of noncontact type.

Claim 13

A draw-texturing apparatus according to claim 11 wherein said second heater is provided with a passage pipe for a heating medium extending along the yarn passage, while a yarn heating groove of U-shape section is defined in front of said passage pipe and the front side of said passage pipe is covered by heat-insulating material, said heating groove is communicated to the exterior by a slit running in the direction of said yarn passage.

Claim 14

A draw-texturing apparatus according to claim 1 wherein said false-twisting means comprises a false-twisting spindle having a pin and furtHer comprising, between the pin of said false-twisting spindle and said first delivery roller, an annular yarn guide at a position within 1 to 10 mm downstream of said false-twisting pin eccentrically from the axis of said false-twisting spindle and a guide rod at a position downstream of said annular guide.

Claim 15

A draw-texturing apparatus according to claim 1 further comprising a sound proof cover surrounding said false-twisting means and an air suction and discharge pipe connected to said sound proof cover.

Claim 16

A draw-texturing apparatus according to claim 1, further comprising a yarn passage at the upper portion of said package supply means for leading yarn therefrom to said supply roller.