JPS6039451A - Texture patterning knitted fabric and apparatus for producing same - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an allPif patterned knitted fabric with loops of different lengths, and to an apparatus for producing such a structured patterned fabric in a knitting machine.

OBJECTS OF THE INVENTION The problem underlying the invention is to create a structured knitted fabric in which the short loops and the long loops do not reside in fixedly defined steps and therefore only in clearly delimited areas of one another. It is to provide. Moreover, the charging of the present invention avoids the usual jacquard patterning equipment and allows the production of such patterned knitted fabrics in a variable but reproducible manner at the full capacity of the machine. It consists in configuring the machine.

Means for achieving the object According to the invention, this object is achieved by forming a range in which the loop length varies continuously from range limit to range center or from range limit to range limit and thus having uniformly short loops and uniformly short loops. The solution is that the print has a pattern range that is not just a range with long loops.

The exposure of braided braids constructed according to the invention can be very diverse. For example, the loop lengths of successive loops over a course or a wale may vary continuously. Between the range with uniformly short loops and the range with uniformly long loops, a patterning range with loops of different lengths is provided, and in these patterning ranges, between the first two ranges Advantageously, a continuous change in the loop length takes place. It is possible for the knitted fabric to have courses with loops of the same length throughout, and between these courses there are courses with loop lengths that vary over the length of the course.

In the knitted fabric constructed according to the present invention, a tissue pattern can also be created by alternating between a tuck net and a loop or a floating net and a loop. It is held in an intermediate course in between. A particularly impressive texture pattern is obtained by the appearance of ms with loops of the same length on the print as vertical, horizontal or oblique stripes or as egg-line stripes; these stripes are preferably intersecting. You can also Further deformation possibilities are provided by the strip areas having different widths and/or different mutual spacings.

The assembled and patterned knitted fabric according to the invention is particularly advantageously obtained with a device having a movable cam part in the knitting machine, which device can be moved relative to the cam of the netting machine for comprehensive control of the knitting tools. additional cams for moving the cam parts controlling the knitting tool, the additional cams being replaceably mounted on at least one additional cam holder, the additional cam holder for controlling the knitting tool holder; Provides adjustable but precisely definable relative and absolute movements relative to the body and cam carrier.

It is known in principle to move individual cam parts in a cam of a screen by means of additional cams. This results in a removal and insertion of the cam part or a change in position of the cam part, with the result that the print structure is also influenced. It is also known to design the pull-down cam part that determines the loop length in knitting machines to be movable. With the known additional cam-controlled switching device for the knitting machine cams, in particular the area-shaped printing areas which follow one after the other along the length of the knitted fabric, which have hitherto been produced with different textures, can also be used in pure form with a predetermined geometric pattern. It is not a typical organization. For this reason, individual selection of the needles has always been carried out up to now.

It is advantageous if the additional cams are distributed according to the invention on at least two additional cam carriers, and these additional cam carriers can be selectively movable in the same or different magnitudes and/or directions. . In this case, at least one additional cam of the plurality of additional cam holders may be movable in common with respect to the additional cams of the other additional cam holders.

Tissue patterning performed with a device constructed according to the invention thus depends on the relative speed of the additional cam with respect to the needle holder or the knitting machine cam, as well as the additional cam shape and the additional cam placement. A jacquard device for individual selection of needles is no longer required. The knitting tools are comprehensively controlled and the knitting machine can always be operated at full power.

With the device according to the invention, the knitting tool can be controlled at any specific point of its movement curve. In particular, a device for displacing the pull-down cam part can be used during operation of the knitting machine, whereby patterning is carried out by forming loops of different lengths, ranging from a netting range with a minimum set loop length to a maximum The transition to the knitting range with loop length is smooth and not jumpy. However, the device can also be used to control a tuck cam section or a simultaneous control of a tuck cam section and a pull-down cam section. In both cases, the structure of the knitted fabric is influenced to produce a pattern.

If in this case fixed ratio values are chosen for the relative velocities of the differently moving parts, a regular geometrical pattern results. However, according to the invention it is also possible to control the additional cam holder with varying movement ratios, for example by means of a program-controlled stepping motor, so that an arbitrarily formed and irregular but reproducible Tissue patterning is performed on knitted fabrics.

The invention is particularly advantageously applied to circular net machines. In a circular mesh machine having a rotating needle holder, additional cams are replaceably provided on two additional cam rings provided concentrically with respect to the needle barrel.
It can be moved synchronously or asynchronously relative to the needle barrel, for example via a gear transmission. One of the additional cam rings is separated into a part that holds the replaceable additional cam and a part that has drive teeth, and the part that holds the additional cam moves in the circumferential direction relative to the other part and therefore the other additional cam ring. is configured to be possible and fixable.

Thus, with a device constructed according to the invention, variations in the loop or tuck loop structure can produce, for example, warp knit patterns with regularly distributed or irregularly distributed stripes, diagonally extending stripes, or additional cam carriers. Cross-knit patterns are also obtained if they are moved in opposite directions to each other. The properties of the knitting structure are advantageously influenced by the configuration of the exchangeably mounted additional cams. What is important in this case is that all of these patterns within the knitting range of the knitting machine can also be reproduced with respect to pattern angle.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention will now be described in detail with reference to an exemplary tissue patterning device configured for a circular net machine.

The schematic cross-sectional view in FIG. 1 shows the tongue needle 1 of a single-needle bed circular
1 shows a needle barrel lO with 1. The needle barrel 10 is rotatably supported by a needle barrel holder 12 equipped with a driving annular gear 13.
installed on top.

Above the ring gear 13 are two additional cams with replaceable additional cams +4' and 15', respectively] jil1
4 and 15 are rotatably supported.

The additional cam ring 14 has an annular gear 16 for driving it,
The additional cam ring 15 has an annular gear 17. Since the ring gear 17 is configured separately from the additional cam ring 15,
In order to change the position of the additional cam 15' with respect to the additional cams 14' of other additional cam rings 14, the additional cam ring 15 is rotated relative to the ring gear 17 after the coupling device (not shown) has been removed.

The annular gears 16 and 17 of the two additional cam rings 14 and 15 are fixedly connected to the drive annular gear 13 of the needle barrel holder 12 and thus to the knitting machine drive via a gear transmission 18 with a speed change gear. has been done. However, the two additional cam rings 14 and 15 are connected to the knitting machine drive in a non-fixed manner via separate stepping motors and in a freely selectable manner via a program generator synchronized to the knitting machine drive. You can also.

Additional cams of both additional cam rings 14 and 15 +4' and 1
5' acts on one slide 20 or two or more such slides with contact rollers 19 in each section of the multi-system circular net machine. This sliding body 20 is vertically movably supported by a fixed cam ring 2I of the circular netting machine, and in the illustrated embodiment holds a pull-down cam portion 22 of the cam system. This pull-down cam portion 22 forces the tongue needle 11 to be controlled in two directions of needle movement via an upper control butt 23 and a lower control butt 24. The sliding body 20 includes both additional cam rings 1
Return spring 25 by cams 14', +5' of 4 and 15
is forced to move against the force of The pull-down cam portion 22 is moved to continuously vary the pull-down distance and thus the length of the loop formed. This movement is adjustable.

The lowering cam part 22 is attached to a part 20a of the slide 2o, which part 20a is connected to the slide 20 carrying the contact roller 19 by an adjusting screw 26 with an externally operable knurled N1 knurled head 27. ing. A stopper of the sliding body 20 is formed by a contact roller 19, and an eccentric pin 28 that engages with the sliding body 2o from the side to form another stopper is rotatably supported by a cam ring 21 and can be operated from the outside. It is formed in the stroke limiter 29. By rotating the stroke limiter 29, which is provided with a scale (not shown), the slider 20 is moved away from the rotational trajectory of the additional cams 14' and 15' by a large amount or by a small amount. It is also possible to separate the slides 2o so far that the additional cams 14' and 15' can no longer contact the contact roller 19.

The lowering cam portion 22 is attached to the slide portion 20a via an adjustment screw 26 with a knurled adjustment head 27.
The basic am is performed continuously. The minimum pull-down position required for the minimum loop length is defined here. Limited range body 29
The difference between the longest loop and the smallest loop that can be formed is set by .

FIG. 2 shows two additional cam rings 14 and 15 and replaceable additional cams +4' and 1 screwed onto them.
5' is shown in a developed view. Although in the illustrated embodiment the additional cams +4' and 15' have the same shape, this need not be the case. The additional cams +4' and +5' are constructed symmetrically and have portions 30 rising obliquely from both ends, and a portion 31 extending horizontally between these sloped portions 30 forms the highest prominence as the head region, and its length is is a multiple of the needle pitch of the needle barrel lO. This highest addition cam portion 31 forms a small loop and thus forms a stripe 33 with small loops in the tissue patterned stitch 32 shown schematically in FIG. It is related to the length of the cam portion 31.

The movement of the lowering cam part 22 is effected by the ramped addition cam part 30, and if we focus on the movement from the highest addition cam part 31, this means the formation of a continuously larger loop. However, the additional cam 15' is offset by half the cam length with respect to the same additional cam 14' of the additional cam ring 14. This is because even if the stroke limiter 29 is set appropriately, the sliding member 20
contact M (meaning that the roller I9 cannot reach the lowest point of the additional cam, i.e. the contact roller 1 rolling on the inclined part 30 from the upper additional cam part 31 of the additional cam 14'
9 immediately reaches onto the oppositely inclined inclined part 30 of the additional cam 15', which is arranged offset relative to this, and this additional cam +5' lifts the contact roller 19 onto the upper horizontal part 31 of the cam 15'. , thereby forming a second stripe of smaller loops. A range 35 thus extends between the li% 33 of the knitted fabric 32 such that in this range 35 the loop size increases to the middle of this range and then decreases continuously again until reaching the next stripe 33. be able to.

However, by adjusting the stroke limiter 29, the contact roller 19
It is also possible to prevent the loop from moving to the point of intersection of the two inclined sections 30, so that in the middle of the range there is a region with loops of the same length, ie of adjusted limit length.

FIG. 2 shows a knitted fabric with a vertical Ji% pattern.

When both additional cam rings 14 and 15 are driven in synchronization with the needle barrel 1°, such a vertical knitting pattern is produced. stripes 33
and width of 35 is used additional cam 14' and +5
Determined by the shape of '. Whether the continuation of the stripes is regular or irregular depends on how the additional cam 15F of the adjustable additional cam ring 15 is offset with respect to the additional cam 14' of the additional cam ring]4.

FIG. 3 shows an additional cam ring 1 with identical additional cams 14' and 15' offset relative to each other in exactly the same way as in FIG.
The texture of silk 36 that results when 4 and 15 are moved at the same speed and in opposite directions is shown schematically. By this mutually opposite movement, the highest additional cam portion 3
1, the stripes 33' of small or short loops occur in a regular diamond-shaped pattern, and the intervening knitted area 35', which now has no pot shape, is continuous from the edge of the area 33' to the center of the area 35'. It has a loop that increases in length.

Both knitted fabrics 32 and 36, which are shown schematically in FIGS. 2 and 3, have a large number of pattern possibilities and a fixedly defined and therefore reproducible pattern shape, and have two additional cam rings 14. When a constant rotational speed ratio is given to the needle barrel and 15, by selecting the shapes of the additional cams 14' and 15', the other additional cam [14] By mutually displacing the additional cams 14' or vice versa, and by selecting the direction of rotation of the two additional cam rings 14 and 15, the shape of the handle is obtained. As another example, FIG.
7 is schematically shown. Further patterning possibilities arise by removing or disconnecting the individual additional cams and by deactivating the individual sliding bodies 20 of the mesh system.

However, during the knitting process, the additional cam ring 14.15 and the total I
F! If the rotation speed ratio with respect to 10 is changed, the possibility of producing multiple patterns is further increased. FIG. 4 schematically shows a knitted fabric 39 with zigzag stripes 40 obtained by varying the rotational speed ratio by means of a gear shifting transmission. However, the knitted fabric structure is not limited to straight stripes. As already mentioned, when the additional cam rings 14 and 15 are driven by program-controlled stepper motors, the curved cam rings 14 and 15, such as the one shown schematically by way of example in FIG. A tissue with extending stripe areas 41 is also obtained.

The possibility of tissue extraction is further increased when two or more slides per system are moved by additional cam holders and the needles of the screen are controlled at two different points of the so-called measurement curve. For example, the pull-down cam part and the cam part that controls the needle in the tuck range can be moved simultaneously.

The apparatus configured according to the present invention is not limited to a round am, but can also be configured with a flat knitting machine in which the structure of the carriage is appropriately changed.

The schematic diagram in FIG. 7 gives an impression of what the thread course is in a patterned knitted fabric. The figure shows two courses 43, 44 with a range of long loops, a range of short loops and a range of varying loop lengths in between. Course range A, B, C with chain lines
, D and E are partitioned. Course range A and E
In this case, the courses 43 have uniformly short loops 45 and the courses 44 have uniformly long loops 46.

In course range C, the opposite is true. There, the courses 43 have uniformly long loops 46 and the courses 44 have uniformly short loops 45. Course ranges B and D form a transition range, in which both courses 43 and 44 have a continuously varying loop length. That is, in course range B, the loop/17 of course 43 is a short loop 45 to the course range.
increases continuously from the length of the long loop 46 of the course range C, and conversely the loop 48 of the course 44 continuously decreases from the length of the long loop 46 to the length of the short loop 45. In the transition range, the opposite changes take place. That is, the loop 49 of the course 43 becomes continuously shorter from the range limit 51 to the range limit 52, and the loop 50 of the course 44 becomes shorter continuously from the range limit 51 to the range limit 52.
becomes continuously longer from the range limit 51 to the range limit 52. The following partially shown course 53 has loops 54 of consistently the same length and can belong to unpatterned horizontal stripes of the knitted fabric.

[Brief explanation of drawings]

Fig. 1 is a radial cross-sectional view of a single needle bed circular knitting machine with a pattern forming device, and Fig. 2 is a schematic development view of both additional cam rings of the pattern forming device, and the structure pattern forming device. FIG. 3 is a schematic development view corresponding to FIG. 2 of the additional cam ring and the knitted material for different sets 11J, and FIGS. 4 to M6 are examples of other possible tissue patterns. FIG. 7 is a schematic diagram of the loop structure of a knitted fabric having different tissue design ranges. lO...Knitting tool holder (needle tube), 11...Knitting tool (total), 14.15...Additional cam holder, 14'
. 15'...Additional cam, 21...Cam holder, 22
...Cam part, 35.35'lB, D...Patterning range where the loop length changes continuously, 45~5o...
Loop, 51.52...Continued from page 1 of Range Limits 0 Inventor Dietil Kling Anor Lasse, Federal Republic of Germany 17 Repsiutsutt 2 Rothbergst

Claims (1)

[Claims] ] The length of the loop (47-50) is within the range limit (51,5
2) to the center of the range or from the range limit (51) to the range limit (52) (35°35
A textured knitted fabric with loops of different lengths, characterized in that the fabric has loops of different lengths. 2. The knitted fabric according to claim 1, characterized in that the loop lengths of the loops (45 to 50) successively continuing over the courses (43, 44) or the unils are continuously changing. 3 A range with uniformly short loops (33, 33'), a range with uniformly long loops, and a range where the loop length changes continuously between these ranges (35, 35')
, B, D) according to claim 1. 4 - Course (5) with loops (54) of equal length throughout
4. A knitted fabric according to claim 3, characterized in that between 3) there are courses (43, 44) with loop lengths that vary over the length of the course. 5. The knitted fabric according to claim 1, which has an intermediate course with a texture pattern created by alternating tuck-like patterns and loops or alternating floating nets and loops. 6 Range with loops of the same length (33, 33',
38°40.41) appears on the knitted fabric as vertical stripes, horizontal stripes, diagonal stripes, or curved stripes. 7. The knitted fabric according to claim 6, wherein the diagonal stripes intersect. 8. A knitted fabric according to claim 6 or 7, characterized in that the striped areas have different widths and/or different mutual spacings. 9 A tissue pattern printing manufacturing device with a movable cam part is for comprehensive control of the knitting worker JllI (11):
14', +5') Ka1lffi Engineer (II) WofJIJ
Move the cam part (22) and attach the additional cam (1
4'15') at least one additional cam holder (14
, 15), the additional cam holder (14, 15) having an adjustable but precisely definable relative to the knitting tool holder (10) and the cam holder (21). characterized by performing motion and absolute motion;
A device that produces knitted fabrics with textured patterns on a netting machine. 10. Claims characterized in that the cam part (22) movable by means of additional cams (+4', 15') forcibly controls the forward and/or return movement of the knitting tool (II) Apparatus according to paragraph 9. 11 Additional cams (14', 15') are distributed on at least two additional cam holders (14, 15), these additional cam holders (1411s) having keys selectively of the same or different size and/or 10. Device according to claim 9, characterized in that it is movable in the direction. 12 The additional cam (+5') of at least one (15) of the plurality of additional cam holders (14, 15) is independently or 12. Device according to claim 9 or 11, characterized in that it is commonly movable. 13 The netting tool holder of the netting machine is attached to the rotating needle tube of the nine rope machine (
10), and two additional cam rings (14, 15) as additional cam holders are provided concentrically with respect to the needle barrel (1o), and these additional cam rings (14, 15) have at least one Needle barrel (lO) through two gear transmissions (18)
10. The device according to claim 9, wherein the device is connected to a drive shaft. 14 One of the attached cam rings (15) is separated into a part that holds the replaceable additional cam (15') and a part that has drive teeth, and the part (15) that holds the additional cam (15'') is The device according to claim 13, characterized in that it is configured to be movable and fixed in the circumferential direction with respect to other parts. !5 Movement of the additional cam holder (14, 15) 16. The device according to claim M9, characterized in that the actuation is carried out by separate drive means controllable in relation to the movement of the knitted tool holder or the cam holder.16. 17. The device according to claim 5, characterized in that it is controllable by a program generator relating to the relative movement of the body (lO). 17.
, 15), the additional cam (14', +5') of the at least one pull-down cam part (2o) determining the loop length via at least one lever or slide (2o)
10. The device according to claim 9, characterized in that it is capable of acting on 2). 18 All additional cam holders (14
, 15), the additional cams (+4', +5') of the knitting tool (11) move the forward position (inoperative position, tuck position or knitting position M) of the knitting tool (11) via at least one lever or slide (20). 10. Device according to claim 9, characterized in that it is operable to act on at least one cam part to determine. 19 The additional cam (14' + 15') has a head region (31) oriented in its direction of movement, the length of which head region (31) corresponds to the pitch of the knitting tool holder (10) of the knitting machine. 10. Device according to claim 9, characterized in that it is a multiple of . 20. Claim 9, characterized in that the additional cam (1a, 15') and/or the switching element (20) subjected to its action are configured to be individually switchable to the inoperative position. The device described.