JPS6247985B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a knitting cam device in an automatic flat knitting machine, particularly a jacquard knitting machine.
In the knitting cam mechanism (lock) that selects three types of non-working positions, the deviation between the highest position of the needle that should be in the tuck position and the highest position of the needle that should be in the knit position is reduced to prevent uneven stitches. Moreover, the aim is to make the lock small.

It is known that a Jya Guard knitting machine has a function of selecting needles in three positions: knit, tuck, and miss using a cam group of one lock. In order to do this, we have developed a device in which a step is formed on the raising ridge of one lock at a position corresponding to the tuck position, and an inverted V-shaped butt groove is formed from the center lower part of the raising ridge to the step. The center of the raising mountain, that is, the center of the highest position of the needle rising to the nit position, and the center of the highest position of the needle rising to the tuck position did not coincide, and there was a slight distance difference between the left and right sides. This had the disadvantage of making the stitches irregular and increasing the length of the lock.

The present invention has been made in view of this point, and next, an example of its implementation will be described with reference to the drawings.

Fig. 1 shows a cam configuration diagram. A is a single lock (cam mechanism) located in the center of the carriage.
A group of transfer cams (not shown) are arranged on both sides thereof. When another lock having the same structure as lock A is arranged next to lock A to form a double lock, the transfer cam group is arranged on both sides of both locks.

Reference numeral 1 is a tenzan, with dowels 2 and 3 provided on both sides thereof so as to be slidable in the direction of the arrow. Upper leveling cams 4, 5 and lower leveling cams 6, 7 are provided between lock A and an adjacent lock for leveling the needles pulled down by the stitches 2, 3 to a constant height. A raising mountain 8 is provided below the tenzan 1 for the purpose of acting on a first jack to be described later and raising and knitting needles that move in conjunction with the first jack. The raised peak 8 has the highest part at the center, which is the same height as the knitting position, and has stepped parts 8a and 8b having a height corresponding to the tuck position on both sides thereof. A tack groove 8c is formed to connect both step portions 8a and 8b, and inclined grooves 8d and 8e extending in a V-shape from below the raised crest 8 are provided in the tack groove 8c. Slanted groove 8
The portions d and 8e connected to the tack groove 8c are the shallowest and have the same depth as the tack groove 8c, and the opposite ends thereof are the deepest. The center of symmetry of the V-shaped inclined grooves 8d and 8e is the same as the center of symmetry of the raised crest 8. Its cross section is shown in FIG.

At both ends of the raising ridge 8 of lock A, there are
Non-working position guide cams 9, 1 for lowering the first jack in the tack position and guiding it to the non-working position
Set 0. Raising mountain 8 and inactive position guidance cam 9,
A pressing cam 11 for pressing the butt of the first jack into the groove is provided below the cam 10, and inclined surfaces 11a and 11b are provided at both ends of the pressing cam 11. Further, at the slightly inner upper edges of the inclined surfaces 11a and 11b, there are curved lines 11c and 11 that continue to both side edges 8f and 8g of the raised mountain 8.
d, and bent edges 11e and 11f following the inclined grooves 8d and 8e are formed on the upper edges of both sides, and jack butt guide grooves 12 and 13 are formed between the lower edge of the raised crest 8 and the upper edge of the pressing cam 11. establish. Reference numerals 14 and 15 indicate jack butt guide grooves 12 and 1 provided in the pressing cam 11.
This is the internal slope that follows No. 3. A receiving cam 16 is provided over the entire width of the lock A in contact with the lower part of the pressing cam 11, and receives the butt of the first jack pushed down to the non-working position by the non-working position guide cams 9 and 10, and also It also acts to prevent the butt of the first jack pushed by the cam 11 from falling.

A select jack butt lowering cam 17 and a return cam 18, which will be described later, are provided below the pressing cam 11. The return cam 18 has the inclined surface 1 of the pressing cam 11.
Slightly outside of 1a and 11b, and the internal inclined surface 14,
15 and rising edges 18a, 18b,
18c and 18d are provided, and a select jack butt guide groove 19 is formed between the cams 17 and 18. In the select jack butt guide groove 19, protrusions 20 and 21 for pushing the select jack butt are provided. 18e and 18f are inclined parts.

22, 23, 24, 25 are selectors, and the number of actuating pieces 22a...22n, 23a...23n, 24a is the same as the number of butts n of the select jack, which will be described later.
. . . 24n, 25a .

Reference numeral 30 denotes a groove plate, in which a needle 33, a jack 34, and a second selection jack 3 are placed in a plurality of grooves 31 provided in parallel.
5 is slidably inserted, and the needle 33 and jack 3 are secured by the needle presser band 36 and jack presser band 37.
4 from falling off. A select jack groove plate 38 is provided to cover the groove 31 in the portion where the second select jack is inserted. A first select jack 40 is slidably inserted into the select jack groove 39 of the select jack groove plate 38. A small hole 41 is provided in the select jack groove plate 38, and the protrusion 42 of the first select jack 40 is inserted through the small hole 41.
protrudes and comes into contact with the second select jack 35. Since the second select jack 35 has a protruding portion 35a in the center that contacts the bottom of the groove 31, when pushed by the protrusion 42 of the first select jack 40, the butt 3 at the top of the second select jack 35
5b protrudes outside the groove 31. The first select jack 40 includes the aforementioned selectors 22, 23, 2.
4, 25 working pieces 22a...22n, 23a...
23n, 24a...24n, 25a...25n (8 types in this example) bats 40
a, 40n... are provided. 43 and 44 are the first
This is the presser strap for the select jack.

Next, the operation of the present invention will be explained.

Assuming that the carriage moves from left to right in FIG. 1, the jack 34 that has passed the adjacent lock (not shown) has its butt 34a in the jack butt guide groove 27, which is composed of the non-operating position guide cam 9 and the pressing cam 11. is engaged in. Here, the selector 22 is operated based on a pre-stored command, and an operating piece, for example 22a, protrudes, so that the operating piece 22a and the butt 40a of the first select jack 40 come into contact, and the first select The butt 40a of the jack 40 is pushed into the select jack groove 39, and the protrusion 42 pushes the second select jack 35, so the second select jack 35 swings about the protrusion 35a as a fulcrum, and the butt 3
5b protrudes from the groove 31 and is inserted into the select jack butt guide groove 19 between the lowering cam 17 and the return cam 18. The select jack butt 35b that has entered the groove 19 is connected to the rising edge 18a of the return cam 18.
It touches and is raised by the same surface.

Butt 35a of the second select jack 35
As shown in FIG. The needle 33 is raised and comes into contact with the side edge 8f of the raising cam 8, and is further raised by the raising cam 8 to position the needle 33 at the knit position. The butt 35b that touches the rising edge 18a and has risen to the highest position is the descending edge 1 of the pulling-down cam 17.
7a and pushed into the groove 31 by the protrusion 20, returning to the original position.

Butt 40 that was not selected by selector 22
b...First selection jack 40 with 40n
is not pushed into the select jack groove 39, so the second select jack 35 is not pushed by the protrusion 42, and the second select jack 3
5, the butt 35b does not protrude from the groove 31. Therefore, the butt 35b moves straight without engaging the rising edge 18a of the return cam 18, the second select jack 35 does not rise, and the jack 34 does not rise either.

The first selector jack corresponding to the needle 33 to be raised to the tack position is selected by the selector 24 from among the second selector jacks 35 corresponding to the needle 33 raised to the above-mentioned knit position. Similar to the selector 22, when the selector 24 protrudes an operating piece 24b based on a pre-stored command, the operating piece 24b and the butt 40b of the first select jack 40 come into contact with each other. The butt 40b is pushed into the select jack groove 39, the protrusion 42 pushes the second select jack 35, the second select jack 35 swings about the protrusion 35a, and the butt 3
5b protrudes from the groove 31 and enters the butt guiding groove 19. The select jack butt 35b that has entered the butt guide groove 19 immediately moves to the rising edge 18 of the return cam 18.
c and rises. As a result of this rise, the jack 34 pushed by the second select jack 35 rises, and the jack butt 34a enters the jack butt guide groove 12 from the inner inclined surface 14 of the pressing cam 11 as shown by the two-dot chain line in FIG. The jack butt 34a is then raised by the bent edge 11e and guided by the inclined groove 8d of the raised ridge 8 to the tuck groove 8c. This puts the needle 33 in the tack position. The jack butt 34a in the tuck position comes into contact with the guide cam 10 as the carriage advances and is pulled down in the same way as the jack butt 34a in the knit position.

The first select jack 40, which has not been selected by the selector 24, does not insert the select jack butt 35b into the select jack guide groove 19, remains recessed in the groove 31, and does not rise. The corresponding needle also has a welt position.

As described above, the needles selected on the forward side of the raising cam 8 are in the knit position, the needles selected in the center of the raising cam 8 are in the tuck position, and the needles that are not selected at all are in the welt position. be selected.

The jack 24, which has reached the knit position and the tuck position, brings the butt 24a into contact with the inactive position guiding cam 9, and is guided to the welt position at the carriage center position.

As described above, the device of the present invention is capable of performing a single lock, a double lock, a leading lock, and a trailing lock in the same course.
Tuck and miss needle selection can be performed separately, and especially in the lock mode, no protruding and retracting cams are used and only a fixed cam is used, so a cam operating mechanism can be completely eliminated.

Further, since there is no need for the conventional raising cam that directly acts on the needle selection, failures caused by needle accidents such as needle breakage can be prevented.

Furthermore, in the device of the present invention, the inclined groove provided in the raised mountain for raising the jack butt is arranged in a V-shape having the same center line as the virtual center line of the raised mountain, and the top of the inclined groove is arranged in the raised mountain. Because the needle is installed so that it extends below the top of the mountain and is continuous with the horizontal tack groove, there is no deviation in the highest position between the needle that takes the knit position and the needle that takes the tack position. Prevents uneven stitches, and
The width of the lock can also be reduced.

[Brief explanation of the drawing]

FIG. 1 is a layout diagram of a cam and a selector in a carriage, FIG. 2 is a cross-sectional view of a groove plate, FIG. 3 is a cross-sectional view taken along the line of FIG. 1, and FIG. 4 is a cross-sectional view taken along the line of FIG. A...Lock, 8...Raising peak, 8c...Tack groove, 8d, 8e...Slanted groove, 11...Press cam,
11a, 11b... Slanted surface, 14, 15... Internal inclined surface, 17... Lowering cam, 18... Return cam, 19... Select jack guide groove, 22, 2
3, 24, 25...Selector, 31...Groove, 3
3... Needle, 34... Jack, 34a... Jack butt, 35... Second selection jack, 35
b...Second selection jack, 40...First selection jack, 45...Carriage.

Claims (1)

[Claims] 1. Automatic flat knitting comprising a jack that acts directly on the needles, a select jack that acts on the jack, a selector that selects and operates the select jack, and a carriage that has a lock that operates the jack and the select jack. In the machine, the jack has elasticity so that when the jack butt is pressed, the jack can sink into the groove in which the jack is fitted due to the bending of the trunk, and the raised crest that engages with the jack butt is A tack groove is provided in the horizontal direction at a position corresponding to the tack groove, and the upper part of the inclined groove arranged in a V shape with the same center line as the imaginary center line of the raised mountain is provided so as to be continuous with the tack groove. , a pressing cam is provided at the lower part of the raised mountain, and has an inclined surface at both ends that is slightly longer than the entire width of the raised mountain, and has an internal sloped surface that continues to the inclined groove via a jack butt guide groove on the inside thereof, and A selector is arranged in the lower part and the lower part of both sides of the pressing cam, and a select jack butt guide groove is formed by a pull-down cam and a return cam to engage with the select jack butt and raise and lower the butt. Knitting cam device for automatic flat knitting machines.