CS255645B1 - Locking mechanism for flat knitting frame - Google Patents

Abstract

The solution relates to a locking system-flat knitting machines, especially knitting machines household machine that contains solid center lock with guide locks assigned, on both sides, to which it is linked one main load lock cooperating with fixed ranking lock. The main load lock is assigned additional retractable lock.

Description

(54) Flat knitting machine interlock system

The invention relates to a flat-knitting machine, in particular a household knitting machine, which comprises a fixed central lock with guiding lock parts assigned on both sides, each of which is connected by a main pulling lock cooperating with a fixed lock. An additional retractable lock is assigned to the main retractable lock.

The invention relates to a lock system of a flat knitting machine.

On flat knitting machines, the needles of the knitting needles pass through a lock system consisting of fixed and adjustable hoists or pullers. These locking parts impart to the knitting needles a linear movement of varying length, which is necessary for the actual knitting. During this movement of knitting needles, new stitches are always drawn through the old stitches, the old stitch being discarded. However, these stitches are often not thrown correctly when using the prior art locking systems, since the stitches are located on the knitting needle in a position where the cross-section of the knitting needle hook closed by the tongue is larger than the cross-section of the knitting needle shank. This creates a greater resistance for the loop to be thrown, which the force exerted by the fabric take-off device does not overcome, the old loop is not dropped from the knitting needle and the fabric is defective.

It is an object of the invention to overcome these drawbacks of the locking systems.

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate knitting defects due to non-exposed stitches, especially when knitting from a thick knitting thread, which is solved according to the invention by assigning an additional rigid pulling lock to the main pulling lock.

In the exemplary embodiment, the lock assembly of the present invention is shown in the drawing, wherein FIG. 1 is an overall view of the lock assembly; FIG. 2 shows the original path of the knitting needles; and FIG.

A flat knitting machine, in particular a hand knitting machine for making one-to-one double-knit knits, consists of frames provided with a known needle bed with grooves. In these grooves are knitting needles 13 having a knee 4 for engagement with the locking system 2 formed on the carriage 2 moving along the needle bed. The lock carriage 7 is coupled to a mechanical or electronic patterning device (not shown). The lock assembly is symmetrical to the transverse centerline X and includes a front wall 20 extending along the entire length of the slide. Above this front wall 20 is a fixed central lock 22. To this is associated on each side one guide lock 23

Behind each of these guide lock members 23 is a main pull lock 24 provided with an additional movable lock. A fixed quadrangular lock 25 is arranged outside these guide lock parts 23. In the vicinity of these fixed locks 25 there is a knitting needle selector (not shown), which is connected to an additional fixed retraction lock 10. This additional fixed retraction lock 10 is triangular in shape and its the horizontal base forming the guide surface 17 with the relief 18 correctly inserting the needles of the knitting needles 2 into the knitting needle selector.

The guide surface adjacent side 11 of the additional tightening lock 10 extends obliquely and serves to move the knitting needles 3 to a position which is always lower than the pull point determined by the top of the main pull lock 24 by the value A shown in FIG. terminated by a rear fixed wall 21 extending also over the entire length of the slide. The rear wall 21 is fixed in place between the main zátažným lock 24 and the auxiliary fixed retraction cam 10 is provided haunch j P ^ro retracted releasing the knitting needles 3. For a fixed retraction cam 10 is fixed to the rear wall 21 of the next ramp 14 forming along with a further inclined the edge 16 of the additional tightening lock 10 of the guide for the retracted knitting needles 2 and serves for their final release.

The lock system of the flat knitting machine controls the knitting needles as follows. During knitting, the carriage 2 provided with the locking system 2 performs a linear reciprocating movement during which the knitting needle 2 enters the locking system 2. The knitting needle 3, not shown, is then brought to the fixed shifting lock 25 to guide it into the path defined by the guide. The knitting needle 2 is further directed by the fixed central lock 22 toward the main retractable lock 24 and goes into the retracted position.

By means of the haunch 7, the knitting needle 2 is moved to the first alignment position, in which the loosening and so-called loop calibration occurs. From there, the knitting needle 2 is retracted by the additional tightening lock 10 to a position lower than the retracting point of the main retracting lock 24 and is lifted to the alignment position by a further attack 14 and leaves it after the stitch has been ejected. By loosening and calibrating the stitch immediately after the haul, the correct stitch of the stitch made of thick yarn, which is often retained on the knitting needle, is always achieved in the next phase of the lock system movement.

Claims (1)

SUBJECT OF THE INVENTION A lock system of a flat knitting machine comprising a fixed center lock with guide guiding parts associated on both sides, followed by a main pulling lock cooperating with a fixed lock, characterized in that the main pulling lock (24) is behind the fixed lock (25). ) assigned an additional fixed retractable lock (10).