JP2002105809A - Circular knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circular knitting machine constituted so that a ground yarn is surely picked up independent of the position of a plush sinker. SOLUTION: This circular knitting machine is equipped with a knitting needle (42) capable of moving the interior of a dial plate (36), a plush sinker (16) and a yarn guide (46) for inserting the plush yarn (50) and ground yarn (48) into the knitting needle (42). The plush sinker (16) can be moved between a basic position and at least one loop-forming position. The yarn guide (46) is composed of a first guide element (72) for inserting the plush yarn (50) into the yarn guide and a second guide element (70) for inserting the ground yarn (48) into the yarn guide (46) and the second guide element (70) is arranged in a state deflected from the first guide element.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plush sinker having a knitting needle which can move in a dial plate, a plush sinker which can move in a cylinder in an axial direction, and a thread guide for inserting plush and ground yarns into the knitting needle. The invention relates to a circular knitting machine for making plush knits, which can be moved in a controlled manner between a basic position and at least one loop forming position to form a plus loop (pile).

[0002]

2. Description of the Related Art A circular knitting machine of this kind is known from DE-C 1935224. The plush sinker can be moved between a basic position and a loop forming position using a cam part. When in the base position, no plush loop is created because the plush sinker is not included in the stitch formation. When in the loop formation position, the plush sinker
It is advanced by the associated cam part to the extent that the plush thread can be passed around it, so that a plush loop of a predetermined length can be formed. In this way, the plush sinker moves forward as appropriate,
By descending, a knitted fabric having a pattern consisting of a region having a plus loop formed when the plush sinker is introduced into the stitch forming process and a region having no plush loop produced when the plush sinker is not introduced into the stitch forming process is produced. It is possible.

The plush yarn passed around the plush sinker is dragged during the stitch forming process, which is subsequently performed by the knitting needle in the adjacent position, so that the plush length is reduced to prevent the plush loop from being reduced. The sinker usually remains in its loop-forming position even after stitching has been performed by the knitting needle in the adjacent position, especially until further stitches of the ground thread are formed and there is no longer any risk of introduction of the plush loop. Activated in such a way that the plush loop is still retained on the plush sinker. For this purpose, the dial cam for activating the knitting needle is set so that its stitch forming point is pulled forward.
However, it has turned out that it is absolutely impossible to reliably pick up the ground yarn with a knitting needle, particularly when the dial cam is set in this manner.

[0004]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to develop a circular knitting machine of the kind mentioned at the outset in such a way that the ground yarn can be reliably picked up irrespective of the position of the plush sinker. is there.

[0005]

SUMMARY OF THE INVENTION In a circular knitting machine of this kind, according to the invention, it is an object of the invention to provide a yarn guide in which a first guide element for inserting a plush yarn and a second guide element for inserting a ground yarn. Element, wherein the second guide element is arranged so as to be offset radially inward with respect to the axis of the cylinder and in the direction opposite to the rotation of the knitting needle with respect to the circumference of the cylinder, relative to the first guide element. Is achieved.

According to the present invention, separate guide elements are provided for feeding the plush yarn and the ground yarn, and the second guide element used for the ground yarn is the first guide element used for the plush yarn. The guide element is offset in both the radial direction and the circumferential direction. While the cylinder with the plush sinker is driven to rotate with the dial plate and the knitting needle, the thread guide is held in a fixed position. By arranging the second guide element offset both in the direction opposite to the rotation of the knitting needle and inward in the radial direction, the ground yarn, in particular, whether the plush sinker is in its basic position or in the loop forming position It can be easily picked up with a knitting needle without any difficulty in design.

In a particularly preferred embodiment of the present invention, the plush sinker is movable to first and second loop forming positions and has first and second loop forming positions for forming plus length plush loops. And two thread take-out areas of different widths respectively associated with the thread. The plush sinker has a thread take-out area where a plush thread can be taken out so that a plus loop is formed. In this case, since two threading regions having different widths are used, a plush loop having a different length is created. Thus, it is possible to make a plush knitted fabric which has areas with no plush loops on the one hand, areas with relatively short plush loops on the other hand, and also areas with longer plush loops. The length of the plush loop can now be varied in the knitting system. At the same time, due to the offset arrangement of the ground yarn guide element and the plush yarn guide element, regardless of whether the plush sinker is in its basic position or in the loop forming position, the knitting needle firstly puts the plush yarn and then the ground yarn Can also be reliably picked up.

[0008] Preferably, the second guide element is
The ground yarn is arranged to be fed to the knitting needle at substantially the same height as the outer edge of the dial plate in the radial direction. Such positioning has proved to be particularly suitable when using a latch needle. In this case, the ground yarn can be passed directly through the opened needle latch.

It has been found to be advantageous if the thread guide has a base on which the second guide element is removably held. By detachably connecting the second guide element to the base, it is possible to use a different kind of second guide element that is individually adapted to the knit to be made in the case. This makes it possible to produce different knitted fabrics using the thread guide, with the use of a second guide element which is adapted in each case.

It is particularly advantageous if the second guide element is adjustably held on the base, since there can be a fine adjustment of the second guide element. at the same time,
It is also advantageous if the second guide element can be adjusted both radially and axially.

The second guide element is preferably
Irrespective of the shape of the first guide element, which can be detachably connected to the base (eg screwed) and receives the plush thread, the intended use at the moment, eg the type of ground thread used at that time May be configured as a separate component that can be adapted to For example, the second guide element may consist of a bracket which is held on a base and has at its free end a guide eye for receiving a ground thread.

Preferably, the first guide element is
It is held in a form that can be detachably connected to the base,
For example, it can be screwed to a base. This makes it possible to exchange the first guide element in a simple manner.

The first guide element can thus be adjusted optimally, and it is advantageous if it is held so as to be adjustable on the base. Thus, for example, the first guide element may be adjustable both radially and axially.

It is particularly advantageous if the first guide element is arranged such that the plush thread can be fed in a radial direction to a knitting needle pierced at approximately the same height as the hook tip. By positioning the first guide element in this manner, it becomes possible to reliably pick up the knitting needle when the plush thread is at the piercing position,
At the same time, the plush sinker is arranged in the radial direction between the first guide element and the second guide element, so that the plush thread is wound around the thread take-out area of the plush sinker without impairing the feed of ground or plush thread. It can also be sent.

In one embodiment, which is particularly low-cost and simple to design, the first guide element has a guide head with a guide duct, the end area of which faces the knitting needle has a radial direction. At the same height as the tip of the hook of the knitting needle pierced. The guide duct may, for example, be in the form of a through-hole passing through the guide head in a substantially vertical direction.

In an advantageous embodiment, the second threading area of the plush sinker is radially at least about twice as wide as the first threading area.
This makes it possible to produce a plush knitted fabric having a pattern consisting of a region without a plus loop and a region with a plus-length plus loop and a plus-plus-plus-length plus-length loop. At this time, only the plush loop having a length equal to or more than double length is cut, and preferably, the plush knitted fabric is cut in such a way that the short plush loop is cut to a length suitable for the knitting, and a particularly beautiful knitted fabric is obtained. Will be. The knits made in this way can be used in particular as upholstery covers, for example covers for automobile seats.

Preferably, the first threading area for forming a relatively short plush loop is located at the free end of the plush sinker and the second threading area for forming a relatively long plush loop. The threading area is positioned at a distance from the free end of the plush sinker. In particular, in this type of configuration, the plush sinker may be configured in the form of a pin needle which can be activated using a pattern jack and activated using an electromagnetic selector.

In a particularly preferred embodiment of the circular knitting machine according to the invention, the at least one threading area narrows in the longitudinal direction of the plush sinker away from its free end. Particularly in the case of a plush sinker having two thread take-out areas having different widths, it is advantageous if each of the thread take-out areas narrows away from the free end of the plush sinker. This ensures that the plush yarn can be held in the current threading area at the loop-forming position of the plush sinker, and that the plush yarn slides out of the longitudinal position of the plush sinker, for example the free end of the plush sinker Because there is no danger of slipping over it.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

[0020]

FIG. 1 schematically shows, but only partially, a knitting head of a circular knitting machine, generally designated by the reference numeral 10. This circular knitting machine includes a needle cylinder 12 rotatably mounted,
12 is surrounded by a fixed cylinder cam jacket 14. Pin Needle 16 (described in more detail below)
Numerous plush sinkers in the shape of a needle cylinder
It is axially slidable outside of 12 and is mounted in successive longitudinal slots. Each pin needle 16 has an adjusting butt 18 that cooperates with a cam portion 20 to perform a downward movement of the pin needle 16.

Each pin needle 16 is connected at its lower end to a pusher 22 in a conventional manner, the pusher 22 having a control butt 24 and cooperating with a corresponding cam portion 26. With this cam portion 26, an upward needle piercing movement of the pusher 22 and the pin needle 16 connected thereto can be performed.

The lower end of the pusher 22 opposite to the pin needle 16 is slidably received by the fork 28 of the pattern jack 30, and the pusher 22 of the pattern jack 30 is
The lower end on the opposite side is pivotally connected to the corresponding groove of the needle cylinder 22 by the projector 32. During the pivoting movement of the pattern jack 30, the pusher 22 causes its control butt 24 to engage and disengage from the cam portion 26, as usual, whereby the upward movement of the pusher 22 and the pin needle 16 is prevented. Actuated to be blocked or interrupted or triggered.

The pivoting movement of the pattern jack 30 is caused in a conventional manner by an electromagnetic adjustment unit 34 coupled to the pattern jack 30. Electromagnetic adjustment unit 34
Is operated by the regulator of the circular knitting machine 10. This regulator is not shown because it is known per se. The electromagnetic adjustment unit 34 allows the pin needle 16 to move under the action of the pattern jack 30 and the pusher 22 and under the action of the respective cam portions.
It can be moved between the basic position shown in FIG. 2, the first loop forming position shown in FIG. 3, and the second loop forming position shown in FIG. As will be described in more detail below, the different positioning of the pin needle 16 causes a plush having a region without a plus loop, a region with a relatively short plush loop, and a region with a relatively long plush loop. It is possible to make a knit.

As is clear from FIG. 1, a dial plate 36 is rotatably mounted concentrically with the needle cylinder 12 and is covered by a dial cam body 37. Above the dial cam body 37, a dial cam system 38 with cam portions 39, 40 and 41 is held. A number of knitting needles in the form of latch needles (spring needles) 42 can be axially slidable on the dial plate 36 in the conventional manner,
It is mounted in successive radial slots. In this case, each latch needle 42 is
Cam part 3 to carry out the radial forward drive movement of
It has a control bat 44 which cooperates with one of 9, 40, 41.

The circular knitting machine 10 further includes a yarn guide 46 that allows the ground yarn 48 and the plush yarn 50 to be inserted into the latch needle 42.

The thread guide 46 is shown in FIGS. It consists of a base 52 fixedly connected to the dial cam body 37 via retaining means, not shown, on which a first, in the form of a guide head 56, is known per se. Guide element is threaded 5
4 allows it to be detachably connected and held so as to be adjustable in the axial direction. Guide head for axial adjustment
56 has a vertically extending slot (not shown) through which a screw 55 can be screwed into the base 52 to tighten the guide head 56.

In addition to the guide head 56, a second guide element in the form of a bracket 60 is held in a detachable connection to the base 52 via another screw connection 58 with a screw 59. The bracket 60 has a long hole 61 oriented at an angle to the vertical, through which the screw 59 passes, so that the bracket 60 can be released both vertically and radially with the screw 59 being released. It can be adjusted. The guide head 56 and the bracket 60 are connected with the screw joints 54 and 58
Can be fine-tuned independently of each other.

In addition to the guide head 56 and the bracket 60,
The base 52 supports an eye holder 63 on the opposite side of the latch needle 42 in the radial direction, and the eye holder 63 is spaced apart from the guide head 56 in the radial direction by the latch needle.
It supports a holding arm 64 that extends transversely to the longitudinal direction of 42, that is, substantially in the circumferential direction of the needle cylinder 12. No.
The first and second lead eyes 66 and 68 are held on the holding arm 64 at a distance from each other in the circumferential direction of the needle cylinder 12.

The bracket 60 supports a guide eye 70 at its free end facing the latch needle 42,
At the free end of the guide head 56 facing 42 there is a guide duct in the form of a through-hole 72 (only depicted in the drawing with dashed lines). In this case, the through hole 72 is vertically aligned with the first lead eye 66 and, when the latch needle 42 is in the needle piercing position, with its thread space 76 (bounded by the needle hook 74). Have been. The plush yarn 50 has the first lead eye 66 and the through hole 7
Thread space 76 of latch needle 42 pierced via 2
Sent to

A second lead eye 68 which is disposed offset in the circumferential direction of the cylinder relative to the first lead eye 66.
Works to send the ground thread 48 together with the guide eye 70. For example, as is apparent from FIGS.
It is offset radially inward with respect to 72 and, more specifically, to the extent that it is located at about the same height as the outer edge 95 of the dial plate 36 in the radial direction. Therefore,
The radial position of the guide eye 70 coincides with the position of the open needle latch of the latch needle 42 when in the tack position. This is particularly evident from FIGS. 7-10,
This will be described.

Further, as apparent from FIG. 5, the guide eyes 70 are also arranged so as to be offset relative to the through holes 72 in the circumferential direction. In this case, the position is assumed to be a position behind the through hole 72 in the rotation direction of the latch needle 42. The rotation direction of the latch needle 42 is indicated by an arrow 80 in FIG. 5, that is, a direction from left to right in FIG.

2, 3, 4 and 7-10, the pin needle 16 comprises a needle shank 82 with an inner edge 83 located radially on the inside and an outer edge 84 located radially on the outside. . The inner edge 83 is almost linear and the pin needle 16
The outer edge 84 starting from the free end of the needle shank 82 has a first tapered portion 86 and a second A tapered portion 87 is formed. The two tapered portions are separated from each other via a step 88 running substantially transversely to the longitudinal direction of the pin needle 16. First taper section 86
This area forms a first threading area 90 for the plush thread 50, and the area of the second taper portion 87 defines a second threading area 92 for the plush thread 50.

As already mentioned, the pin needle 16 may be positioned at different positions using the electromagnetic adjustment unit 34. In FIG. 2, no pinch loop is formed because the pin needle 16 is in its retracted basic position, where it cannot affect the stitch forming process of the latch needle 42.

FIG. 3 shows the pin needle 16 in the first loop forming position, wherein the pin needle 16 has its first threading area 90 at the same height as the latch needle 42. Is positioned at So, below, Figures 7-10
As described above, it is possible to pass the plush thread 50 around the first thread take-out area 90 to create a relatively short plush loop.

FIG. 4 shows the pin needle 16 in the second loop forming position, wherein the pin needle 16 has its second threading area 92 at the same height as the latch needle 42. Is positioned at In this position, the plush thread 50 can be passed around the second thread take-out area 92 to form a relatively long plush loop.

FIGS. 6 to 10 show how to make a plush knitted fabric.
This will be described in more detail in accordance with FIG. Figure 6 shows the pin needle 16
FIG. 7 is a diagram illustrating travel between movement of the latch needle 42 and time. Here, the curve 94 shows the travel during the forward drive of the latch needle 42 with respect to the outer edge 95 of the dial plate 36. Curves 97a, 97b, 97c show the needle cylinder 12 for three different positions of the pin needle 16, respectively.
The travel during the forward drive of the pin needle 16 with respect to the upper edge 98 is shown. The curve 97a shows the travel of the pin needle 16 when the pin needle 16 is driven forward to the second loop forming position, and the curve 97b shows the curve when the pin needle 16 is moved only to the first loop forming position. Shows the running of the pin needle 16,
And for comparison purposes, curve 97c shows the pin needle 16
Does not move forward but stays in its basic position, a so-called circular running. In this case, the forward drive of the latch needle 42 in the radial direction beyond the outer edge of the dial plate 36 is depicted in a downward direction in FIG.
The corresponding forward drive of the pin needle 16 in the axial direction beyond the cylinder upper edge 98 is depicted in FIG. 6 in an upward direction.

Starting from the retracted position (basic position), the latch needle 42 is first sent to the tack position represented by the circled numeral 1 in FIG. 6, as shown in FIG. The stitches formed in the previous stitch forming process hold down on the open needle latch 78. Subsequently, the latch needle 42 passes through the forward drive position, and at the same time, while the needle latch 78 leaves the previously formed stitch, the pin needle 16 is simultaneously driven forward in the vertical upward direction, and simultaneously assumes the first loop forming position. . This is as depicted in FIG. 8, in which the first threading area 90 is arranged at the same height as the latch needle 42. In this case, the latch needle 42 assumes a knit position represented by a circled number 2 in FIG.

The pin needle 16 is further driven forward from there, and the second thread take-out area 92 is positioned at the same height as the latch needle 42 as shown in FIG.
At the same time, the latch needle 42 is returned to its closed position, represented by the circled number 3 in FIG. The ground thread 48 has previously been passed through the needle latch 78, which remains open by the guide eye 70, and during a further retraction operation, the latch needle
42 reliably catches the plush thread 50 sent through the through hole 72. The previously formed stitch closes the needle latch 78 so that the ground yarn 48 and the plush yarn 50 remain reliably retained in the yarn space 76 of the latch needle 42.

As is apparent from FIG. 10, the latch needle 42
Continues to the stitch formation position represented by the circled numeral 4 in FIG. Still, the pin needle 16 is
Stay in the loop formation position of 2 and the adjacent latch needle 4
Since 2a has already grasped the plush thread 50 and the ground thread 48, the plush thread 50 will pass around the pin needle 16 which is being driven forward. According to the definition E of the circular knitting machine, the pin needle 16 remains in its second loop-forming position until a plurality of adjacent latch needles 42a form a stitch (e.g. for the definition E18, the number of adjacent latch needles Is about 7). Thus, during the last withdrawal of the pin needle 16, there is no longer a risk that the plush loop formed by the plush thread 50 passed around the second thread take-out area 92 will be pulled back again.
In this regard, the definition E refers to the number of needles arranged over a reference length of 1 inch (25.4 mm) at the nominal diameter of the circular knitting machine.

FIGS. 7-10 show the stitch forming process in the example of a plush knit with a long plush loop. In this case, the pin needle assumes its second loop forming position. Alternatively, if one wishes to make a plush knit with a short plush loop or a knit without a plush loop, the plush loop is only driven forward to its first loop forming position (curve 97b in FIG. 6).
) Or is not driven forward at all (corresponding to curve 97c), while the movement of the latch needle 42 is not affected by this.

As described above, the circular knitting machine 10 has an area without a splash loop on the one hand and an area with a relatively short plush loop on the other hand, depending on how the electromagnetic adjustment unit 34 works. If not, it is possible to make a plush knit with areas where there is a relatively long plush loop. This makes it possible to knit a visually beautiful pattern for the plush knitted fabric. At the same time, the offset arrangement of the two guide elements for the ground thread 48 and the plush thread 50 ensures that the thread can be picked up by the latch needle 42 irrespective of the function of the pin needle 16.

[Brief description of the drawings]

FIG. 1 is an axial sectional view of a part of a circular knitting machine according to the present invention.

FIG. 2 is an enlarged view of the detail with the thread guide and the plush sinker in their basic position.

FIG. 3 is a detail corresponding to FIG. 2 with the plush sinker in its first loop forming position;

FIG. 4 is a detail corresponding to FIG. 2 with the plush sinker in its second loop-forming position;

FIG. 5 is a side view of the yarn guide in the direction of arrow A in FIG. 2;

FIG. 6 is a diagram illustrating movement of a knitting needle and a plush sinker of a circular knitting machine according to the present invention.

7 shows one of the various stages of the stitch forming process corresponding to the movement of the knitting needle shown in FIG. 6, in the production of a plush knit with a long plush loop.

8 shows one of the various stages of the stitch forming process corresponding to the movement of the knitting needle shown in FIG. 6, in the production of a plush knit with a long plush loop.

9 shows one of the various stages of the stitch forming process corresponding to the movement of the knitting needle shown in FIG. 6, in the production of a plush knit with a long plush loop.

10 shows one of the various stages of the stitch forming process corresponding to the movement of the knitting needle shown in FIG. 6, in the production of a plush knit with a long plush loop.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 ... Cylinder 14 ... Cam jacket 16 ... Pin needle 22 ... Pusher 30 ... Pattern jack 34 ... Electromagnetic adjustment unit 36 ... Dial plate 38 ... Dial cam system 42 ... Latch needle 46 ... Thread guide 48 ... Ground thread 50 ... Plush thread 52 ... Base 56: Guide head 63: Eye holder 70: Guide hole 72: Through hole

Continuation of the front page (72) Inventor Elvin Schebel, Germany-Day 71126 Gewfelden, Goethestrasse 2 (72) Inventor Siegfried Ebner Germany-Day-73630 Remscharden, August-Remle-Strasse 14 (72) Inventor Friedrich Schwarz, Federal Republic of Germany, D-72622 Neu-Rütingen, Brucken-Biessen 7 (72) Inventor Mike Nagel, Federal Republic of Germany, D-71116 Gähl-Tlingen, Beithenstrasse 33 F-term (reference) 4L054 AA01 AB04 AB05 BB04 BB06 BD05 FA06 FA07 FA08 JA02 LA02 NA02 NA05

Claims (13)

[Claims] 1. A knitting needle (42) that can move in a dial plate (36), a plush sinker (16) that can move in an axial direction in a cylinder (12), plush yarn (50) and ground yarn (48). A thread guide (46) for insertion into the knitting needle (42), wherein the plush sinker (16) can be moved in a controlled manner between a basic position and at least one loop forming position to form a plush loop, In a circular knitting machine for making plush knitting, a yarn guide (46) is provided with a first guide element (7) for inserting plush yarn (50).
2) and a second guide element (70) into which the ground yarn (48) is inserted, wherein the second guide element (70)
But with respect to the first guide element (72), offset radially inward with respect to the axis of the cylinder (12) and in the direction opposite to the rotation (80) of the knitting needle (12) around the cylinder. A circular knitting machine characterized by being made. 2. A plush sinker (16) comprising a first and a second
The two threading regions (9) having different widths respectively associated with the first and second loop forming positions so as to be able to move to the loop forming position of
2. The circular knitting machine according to claim 1, wherein the circular knitting machine comprises: 3. The second guide element (70) is arranged such that the ground thread (48) is fed to the knitting needle (42) at a height substantially equal to the outer edge (95) of the dial plate (36) in the radial direction. 3. The circular knitting machine according to claim 1, wherein the circular knitting machine is used. 4. The yarn guide (46) has a base (52),
The circular knitting machine according to claim 1, wherein the second guide element (70) is detachably held on the base. 5. A circular knitting machine according to claim 4, wherein the second guide element (70) is adjustably held on the base (52). 6. The second guide element includes a base (5).
2) held at its free end with a guide eye (70)
5. A bracket comprising a bracket having:
Or the circular knitting machine according to 5. 7. The circular knitting machine according to claim 4, wherein the first guide element (72) is detachably held on the base (52). 8. Circular knitting machine according to claim 7, wherein the first guide element (72) is adjustably held on the base (52). 9. The first guide element (72) is arranged such that the plush thread (50) is fed to the knitting needle (42) which is driven forward at substantially the same height as the hook tip (74) in the radial direction. The circular knitting machine according to claim 1, wherein: 10. A knitting needle (42) having a guide head (56) with a guide duct (72), the end area of which facing the knitting needle (42) is driven forward.
The circular knitting machine according to claim 9, wherein the circular knitting machine is arranged at substantially the same height as the hook tip (74) of the circular knitting machine. 11. The device according to claim 2, wherein the second threading area has a width in the radial direction at least about twice that of the first threading area. Circular knitting machine. 12. A first threading area (90) is disposed at a free end of the plush sinker (16), and a second threading area (92) is located at a distance from the free end of the plush sinker (16). The circular knitting machine according to any one of claims 2 to 11, wherein the circular knitting machine is placed and positioned. 13. At least one thread take-out area (90, 9)
The circular knitting machine according to claim 1, wherein 2) is narrowed in a longitudinal direction of the plush sinker as the distance from a free end thereof increases.