Patent ID: 7836732
Filing Date: 2010-11-23
Classification: D04B

Abstract:
1. A method for lowering and folding fabric at an amount same as knitted and unloaded by a circular knitting machine, comprising: providing a fabric spreading roller set which is horizontally located in the circular knitting machine and below the fabric continuously knitted by the circular knitting machine to rotate synchronously with a needle cylinder of the circular knitting machine in a same direction and has spinning power to lower the fabric; winding the fabric continuously knitted by the circular knitting machine on the fabric spreading roller set to flatten and wind out the fabric at one side; providing two fabric folding rails which are horizontally located below the two ends of the fabric spreading roller set and perpendicular to the fabric spreading roller set and have respectively a horizontal track located thereon; providing a first fabric extending bar at the one side where the fabric winds out from the fabric spreading roller set, the first fabric extending bar being hinged on an outer side of the track of the fabric folding rail in a straddle manner and parallel with the fabric spreading roller set; winding the fabric wound out from the fabric spreading roller set on the first fabric extending bar and winding out the fabric at a lower side opposite to the winding direction; providing a tension balance moving bar on the track in a straddle manner at the side where the first fabric extending bar winds out the fabric, the tension balance moving bar being parallel with the fabric spreading roller set and movable reciprocally and horizontally on the track; winding the fabric wound out from the first fabric extending bar on the tension balance moving bar at a lower side opposite to the winding direction and spacing the first fabric extending bar from the tension balance moving bar to form a first zone fabric length therebetween; providing a first chain holding spot on another outer side of the track and at the same side where the first fabric extending bar winds out the fabric; providing a chain which has one end fastened to the first chain holding spot and another end winding on a side end of the tension balance moving bar and winding out at a lower side opposite to the winding direction and spacing the first chain holding spot from the tension balance moving bar to form a first zone chain length therebetween; providing a second fabric extending bar at the fabric winding out side of the tension balance moving bar that is hinged on the outer side of the track of the fabric folding rail in a straddle manner and parallel with fabric spreading roller set; winding the fabric wound out from the tension balance moving bar on the second fabric extending bar and winding out at a lower side opposite to the winding direction, and spacing the tension balance moving bar from the second fabric extending bar to form a second zone fabric length therebetween; providing a chain turning axle at the chain winding out side of the tension balance moving bar that is hinged on the outer side of the track of the fabric folding rail; winding the chain wound out from the tension balance moving bar on the chain turning axle at a lower side opposite to the winding direction, and spacing the tension balance moving bar from the chain turning axle to form a second zone chain length therebetween; providing a fabric level moving and lowering means on the track that is movable reciprocally and horizontally and has a forward turning fabric folding bar and a reverse turning fabric folding bar hinged thereon in a parallel and straddle manner to provide spinning power and movable reciprocally and horizontally on the fabric folding rails between the second fabric extending bar and the chain turning axle in parallel with the fabric spreading roller set; winding the fabric wound out from the second fabric extending bar between the forward turning fabric folding bar and the reverse turning fabric folding bar, and lowering the fabric therebetween at an amount same as the fabric continuously knitted and unloaded by the circular knitting machine to space the second fabric extending bar from the interval of forward turning fabric folding bar and the reverse turning fabric folding bar to form a third zone fabric length therebetween; providing a second chain holding spot on the fabric level moving and lowering means; fastening the chain wound out from the chain turning axle to the second chain holding spot to space the chain turning axle from the second chain holding spot to form a third zone chain length therebetween; providing a fabric loading board which is located horizontally in the circular knitting machine below the fabric level moving and lowering means and having a width at least same as the width of the fabric and a length at least same as the distance of the reciprocal movement of the forward turning fabric folding bar and the reverse turning fabric folding bar while the fabric level moving and lowering means moves reciprocally and horizontally, the loading board being parallel with the fabric spreading roller set and rotating synchronously therewith in the same direction; and moving the fabric level moving and lowering means reciprocally and horizontally between the second fabric extending bar and the chain turning axle while the fabric is lowered between the forward and reverse turning fabric folding bars at the same amount continuously knitted and unloaded by the circular knitting machine, the fabric of the third zone fabric length decreasing at an amount equal to the sum of the fabric increased amounts of the first zone fabric length and the second zone fabric length, and the fabric increased amount of the first zone fabric length being equal to the fabric increased amount of the second zone fabric length, and the fabric of the third zone fabric length also decreasing at another amount being equal to an increased amount of the third zone chain length and also equal to the sum of an decreased amount of the first zone chain length and another decreased amount of the second zone chain length; the fabric of the third zone fabric length also increasing at an amount equal to the sum of a fabric decreased amount of the first zone fabric length and another fabric decreased amount of the second zone fabric length, and the fabric decreased amount of the first zone fabric length being equal to the fabric decreased amount of the second zone fabric length, and the fabric increased amount of the third zone fabric length being equal to a decreased amount of the third zone chain length and also equal to the sum of an increased amount of the first zone chain length and another increased amount of the second zone chain length, such that the tension balance moving bar and the fabric level moving and lowering means are moved concurrently in a reciprocal and horizontal fashion between the tracks opposite to each other and the fabric located above is maintained at a constant tension while the fabric level moving and lowering means moves reciprocally and horizontally and is lowered at an equal amount to the fabric loading board and folded thereon.