Fabric pull-down devices for computerized flat knitting machine

Abstract

The invention relates to fabric pull-down devices for a computerized flat knitting machine. The fabric pull-down devices are arranged below a front needle bed and a rear needle bed of the flat knitting machine in pairs, needles used for hooking the fabric are arranged on catch claws, and a base is fixedly installed on the flat knitting machine; an upper shield is mounted above the base, and slot holes capable of exposing the needles on the catch claws are formed in the front side face of the upper shield; and one catch claw is provided with a drive motor, the drive motor is mounted on the base, and in the process that the drive motors drive the catch claws to descend, the catch claws are inclined towards the front side close to the upper shield and the needles used for hooking the fabric are exposed from the slot holes. Each catch claw is provided with a driving motor for individual control, and lifting of the catch claws can be set according to the characteristics of the fabric, so that the quality of the fabric is higher; the tension of the pull-down devices is more stable than that of a common rotating roller, and when the front and rear needle beds are respectively used for knitting cloth pieces, the pull-down devices pull the front and rear pieces of cloth downwards to make the tension of the two pieces of cloth to be the same.

Description

technical field [0001] The invention relates to the field of computerized flat knitting machines, in particular to a fabric pull-down device for computerized flat knitting machines. Background technique [0002] The fabric pull-down device is used to pull down the braided fabric that hangs down from the tooth mouth formed between the front needle bed and the rear needle bed of the flat knitting machine. For example, a patent for a braided fabric is disclosed in a patent with the authorization notification number CN106192187B , the catch and pull-down mechanism in the pull-down device uses the method of driving the pull-down triangular shaft to rotate in a specific direction to drive the catch member to move up and down and then pull down the fabric, which belongs to the rotating roller method, but the pulling force generated by the rotating roller method is unstable. Disadvantages, for example, when weaving pieces of cloth on the front and rear needle beds respectively, the ...

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Problems solved by technology

[0002] The fabric pull-down device is used to pull down the braided fabric that hangs down from the tooth mouth formed between the front needle bed and the rear needle bed of the flat knitting machine. For example, a patent for a braided fabric is disclosed in a patent with the authorization notification number CN106192187B , the catch and pull-down mechanism in the pull-down device uses the method of driving the pull-down triangular shaft to rotate in a specific direction to drive the catch member to move up and down and then pull down the fabric, which belongs to the rotating roller method, but the pulling force generated by the rotating roller method is unstable. Disadvantages, for example, when weaving pieces of cloth on the front and rear needle beds respectively, the pulling force of the rotating roller will be affected by the sliding friction between the pieces of cloth, and the pulling force will be uneven to make pieces of different lengths. Therefore, it is necessary to improve and improve the existing pull-down device. optimization

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