JPS641577B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a knitting machine for making warp knitted fabrics in which the base is provided with jacquard-patterned plastic loops.

This type of knitting machine is known, for example, from the East German patent no.
It is known from No. 110073. This knitting machine is equipped with a pile yarn guide row having a large number of thread stitches, and each pile yarn guide passes a different pile yarn through each of the large number of thread stitches. I try to guide them. The pile yarn guide row is moved down into the gap between the needle rows and toward the needle rows once every two knitting courses. The threads of the pile thread guide are oriented in a direction substantially parallel to the longitudinal direction of the needle. The selection member associated with each of the pile thread guides is provided with a throat having an opening facing the needle row. A selection member moves one of the threads to a predetermined position in accordance with the pile yarn that is selected and guided to a specific position on the pattern by the threads of the pile thread guide. This selection member acts to position the selected pile yarn on the hook of the slide needle.

The above-mentioned type of knitting machine is suitable for making coarse-stitched plassy loop warp knitted fabrics, but it is not possible to use untwisted synthetic fiber yarns as pile yarns, and the number of pile yarns cannot be adjusted. If an attempt is made to make a finely knitted fabric with a number of stitches corresponding to the number of needles, a malfunction will occur in the selection of a predetermined pile yarn, resulting in defects in the pattern formed. As a result, when producing a knitted fabric with a large number of pile yarns per unit area, the quality deteriorates.

The present invention has been made in view of the above points, and
To provide a knitting machine capable of producing a high-quality pile yarn pattern even if the number of pile yarns forming the pile yarn pattern is increased or the stitches of the pile yarn pattern are made smaller.

According to the invention, a reed is provided which is movable horizontally and vertically in the direction of the needle rows in order to introduce the pile yarns, and in order to select the pile yarns, a reed is provided in the pitch of the slide needles for each pile yarn. A pile yarn guide is provided, the reed is movable above the lower edge of the slide needle, the reed has a first narrow gap extending to the lower edge of the reed for guiding the pile yarn, and further the reed is arranged between the slide needle and the reed. This is achieved by a knitting machine having a second wide gap between said first narrow gap for temporarily accommodating the pile yarn insertion bar.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes slide needles of a warp knitting machine, and the slide needles 1 are movably arranged in a row in a horizontal direction. A slider 2 to be controlled is provided in this row of slide needles 1. The slide needle 1 is guided within a knockover bar 3 and inserted through a plastic bar 5. A fixed bar 4 is attached to the upper end of the plastic bar 5.
is provided.

On the other hand, at a position above the slide needle 1 on the rear side of the row of plastic bars 5, an insertion bar 6 having an insertion thread guide tube 7 is arranged. The insertion bar 6 and the insertion thread guide tube 7 serve to insert the insertion thread into the base part. The chain row of the base part is formed by pillar bars 8 with thread guides 9.

On the other hand, four pile thread guide sets 11 cooperating with each slide needle 1 are mounted on a horizontally extending pivot 12;
Each is arranged so that it can pivot. 4
A pile yarn acting on one of the two pile yarn guide sets 11 is designated by the reference numeral 10. The pile yarn guides 11 are individually selected by pulling each of the cords 13a, 13b, . It will move.

A reed 15 is arranged to guide the pile yarn 10 between the threads of the pile yarn guide 11 and the loop-forming area of the knitting machine. As shown in FIG. 4, the reed 15 is composed of a series of forked members 20. The forked members 20 have narrow gaps 16 between each leg, and wide gaps 19 between adjacent forked members 20. The pile yarn 10 is then guided into the narrow gap 16 and at a certain stage of the knitting process the slide needles 10
is inserted into the wide gap 19.

Corresponding to the wide gap 19 of the reed 15, there is a pile yarn insertion sinker 18 of the pile yarn insertion bar 17. It moves, but this reed 15 and pile thread insertion bar 17
move up and down independently of each other in the vertical direction.

The surface of the reed 15 facing in the direction of the knockover position is perpendicular to the surface formed by the row of slide needles 1 and is located in a position that is aligned with the front surface of the row of plastic bars 5. The lower end surface of the reed 15 forms a horizontal surface and extends in the same direction as the slide needle 1. As shown in FIG. 3, the pile yarns 10 are positioned so as to cross the lower edge of the reed 15 and extend directly from there to the threads of the pile yarn guide 11, and do not appear in the pile pattern portion of the knitted fabric.

Further, the upper edge of the forked member 20 of the reed 15 is an inclined surface. In particular, this inclined surface is located in a direction substantially perpendicular to the direction in which the unselected pile yarns 10 extend from the threads of the pile yarn guide 11 to the lower edge of the reed 15. In this case, if the reed 15 moves to the left or right side, the unselected pile yarn 10
crosses the upper edge of the forked member 20 in a direction generally perpendicular to the upper edge of the reed. Therefore, pile yarn 10
The slip in the direction of the free end of the forked member 20 can be minimized.

The lower edge of the forked member of the reed 15 is connected to the slide needle 1
It is tilted diagonally upward away from the direction of movement. As shown in FIG.
When a is selected, the corresponding pile yarn guide 11 swings to move the engagement point between the selected pile yarn 10a and the forked member 20 of the reed 15 forward, and the forked member The inclined surface of the lower edge of 20 facilitates forward movement of the engagement point of the selected pile yarn 10a.

The fork 20 of the reed 15 is attached to the bar 21 by conventional means.

The pile yarn guide 11 moves between a selected position and a non-selected position under the control of the jacquard mechanism. In this embodiment, the pull cords 13a, 13b, . . . for the pile yarn guide 11 are directly connected to the jacquard mechanism. It is connected to a latching device which is controlled by a jacquard mechanism.

Pull cords 13a, 13b...As shown in FIG. 2, plates 23a, guided by a fixed guide bar 24 via fixedly arranged horizontal shafts 22a, 22b,
It is fixed to the front end of 23b. The plate 23a shown in FIG.
It rides on the fixed guide bar 24 with a weight of a. A lever 27 is disposed below each plate 23, the front end of which is pivoted and pressed counterclockwise by a spring 26. The rear end of this lever 27 is connected to a heald cord 28 of the jacquard mechanism. Furthermore, each of the plates 23 has a cutout recess 29 on the upper surface.
A bevel bar 30 having an end surface corresponding to the wall surface of the recess 29 is arranged in the recess 29 so as to be freely engageable. This bevel bar 30 reciprocates in the direction indicated by the arrow. For example, when the pile system connected to the pull cord 13b is moved to the selected position, the heald cord 28b of the jia card mechanism is pulled, the swinging lever 27b moves clockwise, and the upwardly protruding nose portion provided on the lever 27b is moved to the selected position. 23 is pushed up, and the plate 23 is positioned close to the bevel bar 30b that reciprocates in the horizontal direction. When the bevel bar 30b engages the recess 29b of the plate 23b in its backward stroke, the plate 23b is latched and subsequently latches the heald cord 28b of the jacquard mechanism. When the bevel bar 30b is moved backward, the bevel bar 30b moves toward the stopper member 25.
b, one of the corresponding pile yarn guides 11 swings out of its selected position. When the bevel bar 30b then moves forward, the bevel bar 30b is unhung from the plate 23b.
If plate 23b is not selected, plate 23b will fall onto fixed guide bar 24b due to its own weight.

Next, the action will be explained.

When the slide needle 1 is in the knockover position and the insertion bar 6 is offset by a predetermined number of needle spacings, the insertion thread is located below the predetermined number of needles. That is, when the slide needle is moved to the protruding position, the slide needle passes directly above the insertion thread.

All pile thread guides 11 are in the unselected position, as shown in FIG. In this case three plastic loops are formed in the thick part of the plastic bar 5 and four pile thread guides 10 are shown in the non-selected position.

When the slide needle 1 moves to protrude, it passes through the plastic bar 5 and enters the wide gap 19 of the reed 15. Since the pile yarn 10 emerges from the reed 15 below the lower edge of the slide needle 1, piercing of the pile yarn 10 is prevented with sufficient reliability. In an intermediate operation, the pile yarn, for example the pile yarn 10a, is placed in the position shown in FIG. 1 by adjusting the position of its oscillating pile yarn guide 11.

The position of the pile thread guide 11 is adjusted by pulling on the corresponding heald cord 28a (FIG. 2). That is, the tension of the heald cord 28a is
Lift up the swinging lever 27a and
7a further lifts the plate 23a with the nose formed therein, so that the cutout recess 29
is fed to the location of the bevel bar 30, during which process the plate 23a is lifted from the stopper 25a. The pile thread guide 11 is thereby adjusted via the cord 13a against the action of the spring 14 associated therewith.

When the slide needle 1 moves further forward, the receptacle 15
is lifted and laterally shifted 1.5 needle pitches above the needle plane and assumes the position shown in FIGS. 5 and 6. Pillar bar 8 is displaced and moved downwards. In this case, together with the reed 15, the laterally displaceable pile thread insertion bar 17 is moved downwards, and the pile thread insertion bar 18 inserts the pile thread 10a into the needle hook (see FIG. 5). Slide needle 1
As is well known, a stitch is formed from a pile yarn and an inserted yarn. While the stitches of the pile yarn 10a are placed on the plush bar 5 and form a yarn loop, the insertion yarn is joined as a holding yarn.

As long as the sliding needle 1 is in that position, the insertion thread is placed under the needle hook by the insertion thread guide tube 7. At the same time, the reed 15 is further shifted to the right by 2.5 stitches. When the slide needle 1 is pushed out further, the reed 15 is at a deep position, so that the pile yarn 10 is not pierced by the slide needle 1. When the slide needle 1 is pushed out further, the reed 15 is lifted up somewhat, so that the slide needle 1 is successfully pushed through the gap between the pile yarns (see FIGS. 7 and 8). At the same time, pile thread 1
The pile yarn guide 11 at 0a slowly returns to its starting position again. The reed 15 is located downwards in the complete movement of the slide needle 1, so that the pile yarn 10a is again placed in the needle hook and the slide needle 1
When the yarn returns, stitch formation is performed together with the base yarn. The base thread has likewise been previously placed in the needle hook by the pillar bar 8, so that it can be reused in the third
The situation shown in the figure and FIG. 4 is obtained.

Before a new selection of pile yarns can be made by means of the heald cords 28a, 28b of the jacquard machine, the plates 23a, 23b which have been diverted must be returned to their starting position. This is done during the return process of the bevel bars 30a, 30b. Plates 23a and 23b are stoppers 25
a, 25b, the bevel bars 30a, 3
0b is removed from the notches 29a and 29b, and the spring 1
4 and plates 23a, 23b, the plates 23a, 23b return to their original positions again, and in that position, the plates 23a, 23b
fully abuts the fixed guide bars 24a, 24b. Of course, the selection of the levers 27a and 27b is not limited to the use of a general jacquard machine having a heddle cord. That is, for example, the levers 27a, 27b
The selection can also be effected by an arrangement of electromagnets that can be controlled according to the pattern.

In addition, according to the knitting machine based on the present invention, it is also conceivable to change the above-mentioned stitch formation cycle without departing from the basic idea of the present invention. This means, for example, that the vertical displacement of the pile thread insertion bar 17 can be increased and, at the same time, the transverse displacement movement of the reed 15 is not impaired thereby. In this case, the transverse displacement movement of the pile thread insertion bar 17 in synchronism with the reed 15 can be omitted.

Furthermore, inserting the pile yarn in each stitch row into the needle hook by means of a pile yarn insertion sinker 18;
It is also conceivable that the pile yarn insertion sinkers 18 and reeds 15 are not inserted alternately as described in the above embodiments.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the knitting section of the knitting machine according to the present invention, FIG.
Figures 5 to 7 are enlarged cross-sectional views of main parts showing different processes of the knitting machine according to the present invention, and Figures 4, 6, and 8 are respectively 3
− line in FIG. 5 and FIG. 7, −
FIG. 1...Slide needle, 2...Slider, 3...Knot over bar, 10...Pile thread, 11...
Pile thread guide, 14... Spring, 15... Reed, 1
6...First gap, 18...Sinker for inserting pile yarn, 19...Second gap, 23-27...Intermediate storage device.

Claims (1)

[Claims] 1. A slide needle row that moves in the horizontal direction, a pillar bar that is equipped with a thread guide and that feeds the thread to the slide needles to form a chain stitch row, and at least one insertion bar;
A plurality of pile yarn guides attached to each slide needle, a selection device that controls the movement of the pile yarn guide to select feeding of the pile yarn to the slide needle, and a selection device for feeding the pile yarn to the slide needle hook. In a knitting machine having a pile yarn insertion sinker arranged between the needles of the slide needle row, the pile yarn guide 11 is arranged so as to be adjustable with respect to the slide needles, and the pile yarn guide 11 is arranged between the pile yarn guide 11 and the plastic bar 5. A reed 15 with a forked member 20 is disposed so as to be movable in the vertical direction, the leg of this forked member 20 being inserted into the corresponding slide needle between the two
9, one gap 16 is closed to the lower end of the forked member 20 in the face facing the recess, and the other gap 19 is formed to be open at the level of the slide needle. A knitting machine characterized by: