CZ20023028A3 - Device for closing toes in knitting machine - Google Patents

Abstract

In the present invention, there is disclosed a small-diameter knitting machine designated for production sock products having a closed toe portion directly in the kitting machine, wherein the machine is equipped with a needle drum (1) provided with needles (2), which can be divided into two arcs of needles controlled by cam system, whereas the first arc of needles ({alpha}) is used for tip knitting (4) with solid border (3) and this solid border is then transferred to the second opposite arc of needles ({beta}). Furthermore it is equipped with sinker ring (10) and cam system for storing and controlling retractable sinkers and device for capturing solid border (3) and its transfer to appropriate needles, when between needles (2) of the second arc of needles ({beta}), which is designed for taking of solid border (3) of tip kitting (4) made with needles (2) of the first arc of needles ({alpha}), are stored in the sinker ring (10) beside knocking-over sinkers(7) also auxiliary sinkers (8), which are making together with knocking-over sinkers(7) pair of sinkers (7 and 8) organized like pliers, having placed two jaws on the opposite side, which are designed to taking over the solid border (3) and transfer it in front of the top of set of needles (2) of the second arc of needles (beta). The first jaw (7a) of the knocking-over sinker (7) is its peak and jaw of the auxiliary sinker (8) is its edge, lug or jaw pin (8a).

Description

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a device for conveying a rigid knitted fabric manufactured, for example, in a reversible manner on needles mounted on one side of the needle cylinder, in front of the pin tops of needle hooks located on the opposite side of the needle cylinder.

BACKGROUND OF THE INVENTION

Sock and hosiery are produced on small diameter knitting machines as tubular knit, possibly with a reversible knit heel and toe. The tip of such a blank remains open and must be closed by sewing on specially designed sewing machines. Designers of knitting machines have been trying for several decades to solve the knitting machine so that the sock is closed directly in the knitting machine and does not have to be transported to the sewing workshop and sewn by hand on the sewing machines.

The main problem of closing the tip directly in the machine is to find a simple and reliable device using a simple and reliable way to transfer the increasing start of the return knit made on the needle arch of one half of the needle cylinder to the opposite needle arch of the other half.

It is known to use a method which carries out such transfer by means of a split tip plate and special machine tip sinkers. The disadvantage of this device is the extreme demands on accuracy and the need to place very many components of a complex device in a very small space inside the needle cylinder. Therefore, it is very expensive and unreliable.

It is also known to solve this problem by means of special grabs, which are also mounted in a complex device which is inserted from below into the needle cylinder to the top thereof. Here, these rod-operated grabs must engage the free edge of the incremental knitted fabric in the space of the first planar half of the needle cylinder and move it across the second planar space of the needle cylinder up to the needles of the opposite needle arch than the needles stuck just beyond its free edge as they lifted. This method is also very demanding because its transfer grabs are controlled by a very complex and thus expensive and less reliable device.

There is also a device that utilizes the already known method of catching knitted fabric inside the needle cylinder by a protrusion placed eg on the top wall of the cup with a fixed non-rotating draw-off

-2 • · ·· * · *. The tube and gave it a new shape so that it has a protruding profile. the profile of the needle cylinder to the cylindrical wall of the needle cylinder, the profile being engageable with the end portion of the article bounded by a rigid edge, which is guided to the ejection sinkers which hold it on the profile and guide it to the tip formed in front of the litter knit. This can then be stabbed at the rigid edge and subsequently carried in front of the tips of the needle hooks. The disadvantage of this device lies in the complicated cooperation of the deflection device and the sinker, and in that when the tips of the sinkers and the hooks of the needles must be inserted into the knitted fabric beyond its edge, it is not secured against lifting. and the needle does not stick into the knit.

SUMMARY OF THE INVENTION

The device according to the invention eliminates all the disadvantages described and is intended to catch and transfer the rigid edge of the toe fabric in the sock production from the toe to the hem when, after producing the required amount of toe, a series of stitches, at least the first part of its rigid edge can be arranged inside the needle pitch. a circle, on its chord, which has a common point A, also with its tangent, with which the chord forms an acute angle.

In such a position, the rigid edge may be located when, for example, it has been made on needle needles substantially greater than 180 °, or at least its beginning is brought into such a favorable position, e.g. by means of a projection mounted on the top wall of the cup. since the introduction of pneumatic exhaust knitted fabric used to enhance its effect. This is accomplished by partially twisting the rigid projection of the knitted fabric, stretching its stitch pillars and deflecting it from its natural position. In both examples, the rigid edge of the tip knit is located within the needle pitch circle, in a favorable position in which it can be captured and transferred before the tips of the needle hook by a transfer device which consists of pairs of sinkers arranged between needles of the second needle arch. as a pair of pliers having opposed two jaws, one jaw holding the retractable sinker beak and the other jaw forming part of the auxiliary sinker body, the bearing of the auxiliary sinker allowing it to move radially in the groove of the sinker ring together with the retractable sinker and The jaws of the pair of sinkers open and close during operation, the working movements of both sinkers being controlled by a locking system located on the outside of the needle cylinder.

For a simple explanation of the operation of the device according to the invention, an example of the production of a rigid edge and subsequent knitted fabric for the closed tip on the needle needles is used,

-3 ° about 240 ° long. In such a case, the tangent of the needle pitch circle is mined by a plurality of stitches of the rigid edge of the top knit having a common point on the circumference of the needle pitch circle forming an angle of 60 ° together. This is already a sufficiently sharp angle to which the radial working travel of a pair of pliers with pliers can be adjusted so that their open jaws can securely grasp the beginning of the rigid edge, stabilize it in their path and then gradually move it from start to end. in front of the tips of the needle hooks.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic cross-sectional view of the upper portion of the needle cylinder, the platinum ring cap, and the lock assembly, and the relative position of the pair of sinkers of the invention having pliers as the fixed edge of the tip is inserted into their open jaws; knitwear.

Fig. 2 shows the same cross-section as in Fig. 1, but at the moment when the jaws of the pair of sinkers are already closed and the rigid edge is trapped therein.

Fig. 3 shows the same cross-section as in Fig. 2, but at the moment when the jaws of the pair of sinkers have already pulled the fixed edge in front of the tips of the needle hooks and the first needle has stabbed behind it.

In FIG. 4 is a schematic plan view of the needle pitch circle of the knitting needle, the sinker, the pair of sinkers with the jaws of the invention and the arrangement of the knit and its rigid edge within the needle pitch circle when the jaws of the first pair of sinkers.

Figure 5 shows the sinker beak as one of the jaws of the sinker pair and the auxiliary sinker tip as the second jaw of the sinker when the jaws are open and the rigid edge of the tip knit is inserted into the space inside the retractable sinker beak, are open.

Fig. 6 shows a solid edge of knitted fabric enclosed in the jaws of a pair of sinkers.

Fig. 7 is an enlarged view of detail A of Fig. 4.

Fig. 8 shows the same plan view as shown in Fig. 4, but at the moment when the jaws of the first pair of sinkers have already moved part of the rigid edge to the outside of the needle pitch circle and are caught by the jaws of the second pair of sinkers.

Fig. 9 is an enlarged view of detail B of Fig. 8

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Fig. 10 shows the same plan view as shown in Figure 10 when a substantial portion of the rigid edge is already displaced in front of the needle hooks and the first four needles are beyond the rigid edge they stabbed into the knit.

Fig. 11 is an enlarged view of detail D of Fig. 10.

DETAILED DESCRIPTION OF THE INVENTION

The apparatus for closing the spokes in an exemplary embodiment is that the small diameter knitting machine intended for the manufacture of hosiery products with a closed toe directly in the knitting machine provided with a needle cylinder fitted with needles which can be divided into two needle arches controlled by the lock system. the first needle arch knits a top knit with a fixed edge and the second opposite needle arch is then transferred the fixed edge, further equipped with a platinum ring and lock system for receiving and controlling the retractable sinkers and a device for capturing the fixed edge and transferring it to the needles when between the needles (2) of the second needle arch (β), which is intended to take up the rigid edge (3) of the top knit (4) made on the needles (2) of the first needle arch (a), ejection sinkers (7), saved help The sinkers (8), which together with the ejectors (7) form a pair of sinkers (7) and (8), arranged as pliers, have two jaws opposite each other for gripping the fixed edge (3) and transferring it before the tips of the row of needles (2) of the second needle arc (β), the first jaw (7a) of the ejector (7) being its beak and the jaw of the auxiliary sinker (8) being its edge, projection or jaw tip (8a), (8) in the sinker groove (9) of the sinker ring (10), allowing it to move along with the ejector (7) in the radial direction with respect to the axis of the needle cylinder (1) and to independently swing in the axial direction with respect to the axis of the needle cylinder (1) such that the first jaws (7a) and the jaw tip (8a) of the pair of sinkers (7) and (8) have two interlocking system-controlled positions, one position being that the first jaw (7a) and the jaw tip (8a) is rev 5 and the second position is that the first jaw (7a) and the jaw tip (8a) are closed (as shown in Fig. 5).

The common radial movement of the pair of sinkers 7 and 8 in the radial direction with respect to the axis of the needle cylinder 1 is derived from the lock assembly housed in the lid 13 of the sinker ring 10 and the separate pivoting movement of the auxiliary sinker 8 in the axial direction with respect to the axis locks housed in the lid 13 of the platinum ring 10 and locks housed under the platinum ring 10.

Under the auxiliary sinker 8, there is a posuy element, e.g. A pin 16, which on one side comes into contact with the lock segment 14 and on its other side can rest on an auxiliary sinker.

The device according to the invention functions as follows. By reversing the needle cylinder 1 we start the production of a new sock. First, knit on the needles 2 of the first needle arch and approximately 240 ° long about the fixed edge 3 of the top knitwear 4. After knitting the fixed edge 3, continue the return knitting until the required amount of top knitwear 4 is made and the fixed edge 3 the first lead needle 2a and the second lead needle 2b are arranged in plan view into the needle cylinder 1 as a chord 5, a needle pitch circle 6 having a common point D at its periphery, also with its tangent γ with which it forms an angle of 60 °. In this case, the fixed edge 3 is in its natural position displaced from the center of the needle pitch circle 6 closer to the needles of the second needle arc β to which the fixed edge 3 will be transferred in the next moments. The needles 2 of the second needle arc β cooperate with ejectors 7, which have an auxiliary sinker 8 arranged next to each other, arranged in their arrangement and shape so that together with the ejector 7 they form a pair of sinkers 7 and 8 7a and 8a facing the axis of the needle cylinder, the first jaw being the beak 7a of the ejector sinker 7 and the second jaw being the edge or projection or tip 8a disposed on the pivot and slidingly mounted auxiliary sinker 8. 7 in the platinum track 9 formed on the face of the platinum ring 10 is derived from the inner lock ring 12 and the outer lock ring 11, which are housed in the cover 13 of the platinum ring 10. The axial swinging movement of the auxiliary sinker H is derived from the lock segment 14 lever 15 and transmitted on the auxiliary sinker 8 by means of a displaceably mounted pin 16, in the sinker ring body 10. The axially swinging downward movement of the auxiliary sinker J is derived from a ramp 12a disposed on the inner lock ring 12, also mounted in the lid 13 of the sinker ring 10. of the auxiliary sinker 8b, which is arranged on the auxiliary sinker 8. In order to bring the lock segment 14 into or out of the working position, its support lever 15 is pivotally mounted on a pin 16 in a sleeve 17 which is fixedly connected to the body 18 knitting machine (not shown). The auxiliary sinker 8 together with the ejector sinker 7 forms a pair of sinkers 7 and 8, which are regularly spaced beside the needles 2 of the arc of the needle β. Their task is to gradually grip the fixed edge 3 with their jaws 7a and 8a and drag it over the needle hooks 2 of the arc of the needle β. This work is performed as follows: First, the outer locking ring 11 moves the pair of sinkers 7 and 8 so that their open jaws 7a and 8a are sequentially arranged within the needle pitch circle 6 behind the stalks of needles 2, a position in which they are ready

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The rotating needle cylinder 1 carries the rigid edge 3 towards the working stage. a pair of sinkers 7 and 8 until its start is inserted into at least one first open jaw 7a, which is formed by the beak of the ejector 7 as shown in Fig. 4 and its detail in Fig. 5.

Once the fixed edge 3 is reliably inserted into the jaw 7a of the ejector 7, the lock segment 14 raises the auxiliary sinker in the H direction by the pin 16 and its jaw tip 8a securely closes the fixed edge 3 in the jaw 7a. At this point, the jaws 7a and 8a begin to move in path Z towards the outside of the needle cylinder 1. By this movement, they first stabilize the beginning of the rigid edge 3 in their working path 18 so that they can gradually engage the jaws 7a and 8a. and 8, and continue to move Z until they transfer their respective portion of the fixed edge 3 in front of the hook of their respective needle 2.

By this procedure, which is also shown in Fig. 10 and its detail in Fig. 11, the other jaws 7a and 8a of the pair of sinkers 7 and 8, respectively, each gradually transfer their fixed edge portion 3 in front of the respective hook hooks 2, the knitted fabrics 4 are stabbing behind its firm edge 3 until the entire firm edge 3 is transferred to the needles 2 of the entire needle arc β. At this point, the toe is closed and knitting of the other parts of the sock is started in a known manner. Knitting is terminated using rows with limited pairing and the finished sock is dropped from the needles.

The advantages of the device according to the invention are that when the fixed edge 3 is arranged inside the needle pitch circle 6, like its chord, it points in its natural position, gradually from its beginning to the end, directly into the open jaws of the hooks 7a of the ejector 7 the fixed edge 3 penetrates into the open jaw - its inner upper edge 7b secures it against being lifted and therefore cannot move anywhere when the jaw tip 8a inside the jaw of the beak 7a has to reliably close it and cannot then even bend in front of the hook hook 2 a further advantage is that the jaws of the sinker pairs 7 and 8 securely engage the rigid rim 3 even without cooperation with the deflection device, since their working path is arranged such that into the jaws 7a and 8a of the first pair of sinkers 7 a. 8 introduces the beginning of the rigid edge of its first leading needle 2a and once it jaws 7a and 8a, the first pair of sinkers 7 and 8 engage, move it to the jaws 7a and 8a of the second pair of sinkers 7 and 8, and once it engages the jaws of the second pair of sinkers, move it to the jaw of the third pair of sinkers 7 and 8 the edge 3, which is then pulled in front of the tips of the needle hook 2 of the needle arch β, and its needles can then be securely inserted into the knit just behind its solid edge 3.

The working path 18 of the jaws 7a and 8a is constructed for the largest angle γ of the natural position of the fixed edge 3, which, however, decreases continuously as it is transferred as shown in FIG.

11, but this does not matter, since the ejection edge 7e of the beak of the beak 7 pushes off the fixed edge 3 and keeps the direction of its placing in the jaws 7a and 8a at the same angle.

Industrial applicability

This device for closing spokes in a knitting machine can be used wherever it is necessary to knit a closed tubular knit at one end.

-8Overview of Reference Marks

Needle roller

Needles

2a First leading needle

2b Second lead needle

Hard edge

Top knitwear

Chord

Needle pitch circle

Discarding platinum

7a First jaw

7b Inner upper edge

7c Drop-off edge

Auxiliary platinum

8a Jaw tip

8b Auxiliary sinkers approach

Platinum groove

Platinum wreath

Outer locking ring

12a Inner ring approach

Platinum ring cover

Lock segment

Lever

Plug

Sleeve a First needle bend β Second needle bend γ Sharp angle γ Tangent of needle pitch circle

D Common point of tangent and chord on the circumference of the needle pitch circle

H Up direction

J Downward direction

Movement Z

Claims (3)

1. A small diameter knitting machine intended for the manufacture of hosiery products with a closed toe directly in a knitting machine, having a needle cylinder fitted with needles which can be divided into two needle arches controlled by a lock system. and to the second opposing needle arch, the fixed edge is then transferred, further equipped with a sinker ring and lock system for receiving and operating the retractable sinkers, and a device for engaging the fixed edge and transferring it to the respective needles. An arc (β), which is intended to take up a solid edge (3) of the top knitwear (4), made on the needles (2) of the first needle arch (a), is located in the sinker ring (10) next to the ejectors (7). platinum (8), which together with the discarding sinkers (7) form a pair p latins (7) and (8), arranged as pliers, having opposed two jaws intended to engage a rigid edge (3) and transfer it in front of the tips of a row of needles (2) of the second needle arc (β), the first jaw (7a) the ejector sinker (7) is its beak and the jaw of the auxiliary sinker (8) is its edge, projection or jaw tip (8a), wherein the placement of the auxiliary sinker (8) in the platinum groove (9) of the platinum ring (10) allows to move along with the ejector (7) in the radial direction relative to the axis of the needle cylinder (1) and to independently oscillate in the axial direction relative to the axis of the needle cylinder (1) so that the first jaws (7a) and jaw point (8a) the pairs of sinkers (7) and (8) have two interlocking system-controlled positions, one position being that the first jaw (7a) and the jaw tip (8a) are open and the second position is that the first jaw (7a) ) and the jaw tip (8a) are closed. Device according to claim 1, characterized in that the common radial movement of the pair of sinkers (7) and (8) in the radial direction with respect to the axis of the needle cylinder (1) is derived from a locking system housed in the cover (13) of the platinum ring (10). ) and the separate pivoting movement of the auxiliary sinker (8) in the axial direction with respect to the axis of the needle cylinder (1) is derived from the locks housed in the lid (13) of the platinum ring (10) and the locks located below the platinum ring (10). Device according to claims 1 and 2, characterized in that a sliding element, for example a pin (16), which is in contact with the locking segment on one side thereof, is arranged in the sinker ring body (10) under the auxiliary sinker (8). (14) and, on the other hand, can rely on auxiliary platinum (8).