JPS5921985B2 - knitting machine cam device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cam device used in a knitting machine, and the cam device includes a lifting cam that lifts a needle, leaves its loop, and then takes up a yarn for knitting.

This type has a lowering cam that lowers the raised needle.

The object of the invention is to provide a cam device of the above type in which a lifting cam is also used to lift the needle and release the loop from the needle.

Typically, a separate raising cam is used for hump purposes, but the additional raising cam increases the length of the cam box required to accommodate the cam arrangement.

In a V-shaped flat flat knitting machine, this increases the time J required for the cam box to traverse along the knitting machine, thereby reducing the production rate of the knitted article.

An increase in the length of the cam box is important for circular knitting machines, especially reciprocating or counter-rotating (contta-rotat)
ing) This may be disadvantageous in circular knitting machines that have a cam box effect.

Therefore, the invention provides that the cam trajectory for lowering the bat, viewed in the direction of relative movement of the bat through the cam device,
The raising cam is followed by a lowering cam, which prevents the thread from being taken up by the needle associated with the butt moving down said cam trajectory, and which prevents the batt from being drawn up by the needle associated with the batt moving down said cam trajectory. A cam device of a knitting machine of the type mentioned above, having a selectively guiding device.

The device for guiding the bat along said cam track runs along said track and is on the same element as the first-mentioned bat or on an element associated with the first-mentioned bat-carrying element. It has another cam that is engageable with a bat other than the one being disposed, and said other bat can be selectively raised to engage said cam.

The device alternatively has a further cam which can engage the bat to be run along the track when the bat is raised to a sufficient extent relative to the groove plate, so that the knitting machine A device may be provided for selectively raising the bat to the extent described above.

The device may further alternatively be adapted to contact a bat to be run along the track, or a bat separate from the bat to be run along the track, It may be provided with a picker device adapted to come into contact with a bat that is arranged on the same element or on a different element from the bat along which it is to be run.

The invention will be further explained by way of example and with reference to the accompanying drawings.

The cam device shown in FIG. 1 consists of a two-part raising cam 5 and a lowering cam 6, which cooperate with butts on the needles of the knitting machine.
and has.

The raising cam 5 is raised in two stages to the height at which the needle releases the thread.
That is, the needle is raised to such a height that the loop of thread held by the hook descends past the latch and onto the shank of the needle below the latch.

Then, when the needle, which has been raised to a height that releases the yarn, is lowered, it will cause the loop on that needle to detach from the needle if no yarn is fed to the hook, and another loop will be pulled to complete the knitting. It will be done.

In front of the lowering cam 6 is a dowel section (a cam that guides the butt of the needle to maintain it at a constant height for a while) at a height suitable for holding the thread outside while being fed to the hook of the needle. The part of

The same applies below) There is a guard cam having 7.

Direction of relative movement of the needle through the cam device (arrow A in Figure 1)
A cam track 8 is disposed following the raising cam 5 and in front of the lowering cam 6, as seen in the direction of the lowering cam 6. , that is, before the hook of the needle reaches the dwell part 7 where the thread is taken up.

Therefore, the needle associated with the butt running along the cam track 8 does not take up the thread.

The can outside 9 (FIG. 4) is equipped with a butt 10 cooperating with the raising cam 5, the lowering cam 6 and the cam track 8.

Associated with the canister 9 is another element constituted by a jack 11 connected to the needle by a linkage 12, said linkage allowing a pivoting movement between the needle 9 and the jack 11.

Each jack 11 carries a bat 13.

Trick where needle 9 and jack 11 slide
The floor of s) is constructed in a known manner to permit pivoting movement of the seat between the position shown in broken lines in FIG. 4 and the position shown in solid lines in that figure.

A known device (not shown) for moving the jack to the desired position is incorporated into the knitting machine.

Mechanisms such as those described above are already integrated into knitting machines in order to be able to plan the needles to perform stitch transfers [7] or other operations required for patterning.

The cam device of FIG. 1 further includes a butt 1 of the jack 11.
It has a cam 14 cooperating with 3.

As for the bat 13, the jack 11 that carries this bat is the fourth
It engages with the cam 14 only when occupying the position shown by the solid line in the figure.

The jack 11 and its associated needle 9 are then moved relative to the cam device so that the jack 11 is lowered so that the butt 10 of the associated needle 9 enters the cam track 8 and the needle does not take up the thread. descend to

Thus, by means of a mechanism for selectively pivoting jack 11 to any of the positions shown in FIG. 4, movement of the needle can be selected to remove or knit a loop from the needle.

In a cam box for a V-type flat flat knitting machine using double system knitting, the cam box should be oriented in such a way that the relative movement of the needles through the cam box is in the opposite direction to arrow A in FIG. Another cam, a mirror image of the cam shown in FIG. 1, is provided to disengage the loop from the needle as it traverses the groove plate.

In machines using single system knitting, a single cam track 8 is usually sufficient to lower the needle butt in order to disengage the loop from the needle, but the opposite direction of movement of the cam box is A corresponding trajectory may be provided for this purpose.

The cam device shown in FIG. 2 has a two-part raising cam 17, a lowering cam 18, and a guard cam having a dwell portion 19 from which the needles take up the knitting thread.

A cam track 22 follows the raising cam 17 and precedes the lowering cam 18, looking in the direction of relative movement of the needles through the cam arrangement (arrow B).
is arranged, and this cam trajectory is such that the butt is lowered and cam 1
8, that is, before the bat takes over the yarn for knitting, the bat is lowered.

A cam 23 (FIGS. 2 and 5) is located adjacent to the inlet 24 of the cam track 22 and is at a height such that it contacts only the raised bat.

The needle and jack used in connection with the cam in Figure 2 are:
The fourth one, except that the needle 9 does not carry the butt 10.
It is similar to the needle and jack shown in the figure.

When the butt 13 is lifted by moving its associated jack 11 to the position shown in solid lines in FIG. 4, the butt 13 engages the cam 23 as the cam device passes the associated needle 9 and jack 11. , the butt is directed downwardly toward the cam track 22 without causing the needle to take up the thread.

The loop of the associated needle 9 is thereby detached from the needle.

In cam boxes for V-bed knitting machines with double system knitting, the cam device shown in FIG. 2 is used together with the cam device of FIG. A cam device is provided which is a mirror image of the cam device shown in FIG.

The cam device shown in FIG. 3 has a two-part raising cam 27, a lowering cam 28, and a guard cam having a dwell portion 29 from which the needles take up the knitting thread.

Looking in the direction of relative movement of the bat through the cam arrangement (arrow C), a cam track 30 is arranged following the raising cam 27 and in front of the lowering cam 28 .

The butt directed into the cam track 30 lowers the associated needle to a height where the needle loop disengages from the needle.

The needle and the butt associated with the extranucleus entering the cam trajectory 30 are:
The needle descends before taking up the thread for knitting.

The needle and jack combination shown in FIG. 4 is used in conjunction with the cam arrangement of FIG.

The butt 13 of the jack 11 cooperates with the raising cam 27 and the lowering cam 28 to produce a movement for actuating the needle.

The butt 13 is directed into the cam track 30 by a conventional picker device 33 acting on the butt 10 of the needle 9.

If the head 35 of the picker device 33 is
If this is set, the butt 10 of the leading needle in the group of needles 9 will strike the face 36 of the head 35 and be deflected downward, pressing down on the associated needle 9 and jack 11. Therefore, the butt 13 provided on the jack 11 enters the cam track 30.

The head 35 is rotated around the axis 37 by the action of the bat 10 and is thereby rendered inactive, so that
The remaining needles of the group pass through the cam arrangement without being deflected downwards.

The head 35 of the picker device 33 is reset by rotating it once more to the position shown in FIG.

The picker device 33 is equipped with conventional devices for carrying out said operations when desired.

The cam box used in the double system V-bed machine also includes the cam device shown in FIG. 3 as well as another cam device which is a mirror image of this cam device.

In all three cam arrangements shown in the figures, provision is made for raising the needle to the tacking height by means of a raising cam 5, 17 or 27 whose upper part is retractable.

If the top of the raising cam of FIGS. 2 or 3 is only partially retracted, only the raised butt will be pushed up to a height where it will engage the top of the raising cam and release the loop.

These raised butts then pass through the cam track 22
Or, by turning downward to a force of 30, these butt loops can be detached from the needle.

Alternatively, in the cam arrangement of FIG. 2, if the mechanism (not shown) for positioning the jacks 11 could adjust each jack to one of three positions;
A partially raised butt can be configured to engage the partially retracted top of the raising cam along with a fully raised bat, but only a fully raised bat will engage the cam 23. and is deflected downward toward the cam track 22 to perform off.

The part of each raising cam surrounding the inlet of the cam track 8, 22 or 30 is provided with a recess to reduce the risk of a portion of the butt deflecting into the inlet and colliding with the edge of the cam track. It is a provision.

[Brief explanation of the drawing]

1, 2 and 3 are schematic diagrams showing portions of three cam devices according to the invention; FIG. 4 is a schematic diagram showing a needle and jack for use in conjunction with the cam device of FIG. 1; and FIG. FIG. 5 is a sectional view taken along the line V--V in FIG. 2. 5.17,27... Raise cam, 6.18.28
...Lower cam, 7,19,29...Dwell part, 9...Needle, 10,13...Knitting bat, 8,22゜30 ...cam trajectory, 1
1... Jack, 14°23... Cam, 33... Picker device.

Claims (1)

[Scope of Claims] 1. An independently operable cam device for a flat flat knitting machine having needles, comprising: (a) a knitting butt 10 associated with the needles 9 of the knitting machine;
a raising cam 5° 17.27 which raises said butt and needle in such a way that said needle 9 leaves the yarn loop held outside the core and takes up the yarn for knitting; (c) lowering cams 6.18, 28 which lower the associated needles 9 after coming into contact with the raised knitting butt 10.13 so that they can take up the yarn and be knitted out of the core; A cam track 8,22. between the raising cam 5,17.27 and the lowering cam 6.18.28 which allows the knitting batt 10,13 to be lowered before the associated needle 9 takes up the thread. 30 and (d) lowering the selected needle 9, which has been raised by said raising cams 5, 17, 27 to a height which releases the thread, and lowering the associated knitting butt 10.13 onto said cam track 8.
, 22, 30, with a directing device 14. 2. An independently actuatable cam device for a flat flat knitting machine with needles, the yarn being in contact with a knitting butt associated with the needles of said knitting machine, said needles being held outside the core. a raising cam that lifts the batt and needles so as to leave the loop and take up the knitting yarn; and a raising cam that raises the batt and needles so as to take up the yarn for knitting; a lowering cam for lowering the needles after the needles have been threaded; a cam track between said raising cam and said lowering cam to enable said knitting butt to be lowered before said associated needle takes up yarn; and said raising cam; a cam device having an orienting device separate from the cam track for lowering selected needles raised to a height at which they release the yarn by and feeding the associated knitting butt into the cam track; The orienting device comprises: (a) a jack element 11 associated with the can outside 9 and carrying the knitting batt 13; and (b) a jack element 11 selected for the knitting machine groove plate. a device for raising and retracting; (c) a butt 1 for organizing the raised jack element 11;
3 and another cam 23 adapted to direct the knitting butt onto said cam track 22. 3. An independently actuatable cam device for a flat flat knitting machine with needles, the yarn being in contact with a knitting butt associated with the needles of said knitting machine, said needles being held outside the core. a raising cam that lifts the batt and needles so as to leave the loop and take up the knitting yarn; and a raising cam that raises the batt and needles so as to take up the yarn for knitting; a lowering cam for lowering the needles after the needles have been threaded; a cam track between said raising cam and said lowering cam to enable said knitting butt to be lowered before said associated needle takes up yarn; and said raising cam; a cam device having an orienting device separate from the cam track for lowering selected needles raised to a height at which they release the yarn by and feeding the associated knitting butt into the cam track; The orientation device has a further cam 14, 23 which can engage with a further butt 13 associated with the needle 9 of the knitting machine, this further cam 14.23 a cam device adapted to engage the other butt when the butt is raised relative to the groove plate;