Presser foot device

Abstract

The invention discloses a presser foot device. The device comprises a base and a motor, one end of a motor shaft is connected with a presser foot through a presser foot transmission mechanism, the other end of the motor shaft is connected with a brush through a brush transmission mechanism, the brush transmission mechanism comprises a rotary plate, the rotary plate is installed on the motor shaft,a control groove is formed in the rotary plate, the control groove comprises an avoiding section, an adjusting section and a holding section, a sliding shaft is arranged in the control groove, a brush swinging rod is connected with the sliding shaft, a brush is installed on the brush swinging rod, the middle of the brush swinging rod is fixed on the base, and a pressure sensor used for detectingthe pressure between the presser foot and the presser foot transmission mechanism is arranged on the presser transmission mechanism; functions of pressing coils and opening needle latches are achievedby the presser foot device, and when the pressing depth of the coils pressed by the presser foot is rotatably adjusted by the motor, the opening of the needle latches of knitting needles can be ensured by the designing of the holding section; when yarns are excessively tight, the variation of the pressure can be detected by the pressure sensor to replace the presser foot, and therefore the bumping of beating needles by the knitting needles and the presser foot caused by the deformation of the presser foot is avoided.

Description

technical field [0001] The invention relates to a presser foot device, in particular to a presser foot device for a computerized flat knitting machine, and belongs to the field of computerized flat knitting machine manufacturing. Background technique [0002] In the knitting process of the computerized flat knitting machine, in order to ensure the smooth descent of the fabric and avoid the floating yarn hitting the needle, the current computerized flat knitting machine generally uses the presser foot to press the loop. For example, the stitch pressing mechanism of the flat knitting machine disclosed in the patent document with the publication number of CN1745205A, and the slideway of the computerized flat knitting machine disclosed in the patent document with the publication number of CN101603238A is a press ring device. These devices (mechanisms) are controlled by the presser foot. (or similar components) press the loop, so that the fabric can be smoothly lowered without th...

AI Technical Summary

Problems solved by technology

However, when adjusting the pressing depth of the presser foot, the rotation angle of the motor shaft is adjusted, and at this time, the motor shaft drives the brush mechanism to move. At this time, the brush is no longer in the original open position, and the needle latch cannot be opened.

[0006] Moreover, when using the presser foot to press the coil, if the coil tension is high, the coil cannot be easily pressed, and at this time the presser foot mechanism driving the presser foot is moving normally, which will easily cause the deformation of the presser foot. When the deformation is too large, it will cause needle injection (that is, collision with the knitting needle)

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