CZ281371B6 - Latch needle selector mechanism - Google Patents

Abstract

The invention relates to a needle selection device (4) for switching on a two-cylinder circular knitting machine for making sock goods. The needles (4) are guided by guide sinkers (3) on which the pivotable selectors (5) are mounted. The selectors (5) are provided with two guide elbows (51, 52) selectively engageable with the locking paths (10, 13) to guide the needles (4) in the knitting or non-knitting positions. The means for acting on the pivoting selectors (5) are arranged at a height on the arc of the needle cylinder (1,2) where the needles (4) are latched at the same time in the upper and lower guide sinkers (3).

Description

Device for choosing reed needles

Technical field

BACKGROUND OF THE INVENTION The invention relates to a device for selecting reed needles in the needle cylinders of a two-cylinder circular knitting machine for the manufacture of sock goods, wherein the needles are guided by guide sinkers on which pivoting selectors with two guide butts alternately selectable are engaged. knitting or non-knitting positions.

BACKGROUND OF THE INVENTION

Two-roll sock knitting machines are known which are provided with a needle selection device acting on the patterning stoppers for the purpose of choosing rib, jacquard or two-weave knitting or combinations thereof. These selectors operate on the track at height when the corresponding needles are in retracted positions. When switching is required, the needle is switched to the upper needle cylinder or the needles from the upper needle cylinder are transferred to the needle after selecting the stoppers. By this arrangement, the considerable height of the needle cylinders required for the stroke of the stalks and the guide rails of the needles is given. This results in quite considerable masses, which is manifested by the inertia force during machine braking during malfunctions, but especially during reverse operation.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above disadvantages.

SUMMARY OF THE INVENTION

The device is characterized in that the means for acting on the pivotable selector are arranged at a height on the arc of the needle cylinder, where the needles are locked simultaneously in the upper and lower guide sinkers.

According to a preferred embodiment, the means for actuating the pivoting selectors of the button are arranged behind which a lifting edge is arranged at the height level of one squeezed guide elbow for raising the lower guide sinkers and by means of needles for raising the upper guide sinkers to the knitting track level in the upper needle cylinder.

Another advantageous embodiment consists in that a horizontal cam track is provided at the level of the second squeezed guide elbows under the lifting edge for raising the lower guide rails and by means of the needles and raising the upper guide rails to the height level of the knitting cam track in the upper needle cylinder. to the knitting track in the lower needle cylinder.

BRIEF DESCRIPTION OF THE DRAWINGS

The device according to the invention is illustrated by way of example in the drawing with a lock system for knitting ribbed or fancy goods.

1GB 281371 B6

DETAILED DESCRIPTION OF THE INVENTION

The known double-cylinder circular knitting machine for the production of sock goods is provided with a lower needle cylinder 1 and an upper needle cylinder 2, in the grooves of which the guide pins of the needles 4 are displaceably disposed for guiding and switching them. The sinkers 2 are pivotably mounted on the hinge of the selectors 5 with guide nodes 51 and 52 located at the ends which serve to guide the guide sinkers and thus the needles 4 in the knitting and non-knitting tracks. Furthermore, the selectors 2 are provided with pattern nodes ⁵¹ .

The lock assembly of the lower needle cylinder 1 consists of an upper shaped cam ring 7 and a lower shaped cam ring 8. A cam track 9 is formed within the reach of the upper guide butts 51 starting from point B in the direction of rotation S, which serves to guide the lower guide pins. 2 · The cam track 9 is finished with a bevel 9 ¹ . Further, a knitting cam track 10 is formed at the height level of the guide nodes 51, into which the density locks 10 and 11 of the two knitting systems which the machine is provided extend. Between the locking cam rings 7 and 8, a cam track 13 is provided for guiding the lower guide elbows 52 and 52, respectively. needles 4 at a heel height, or for guiding empty lower guide sinkers 2 at a height where their tips open the upper needles 4. A knitting cam track 14 opens into said cam track 13 for guiding the working needles 4 in the reciprocating direction of knitting. the right density lock 15 of the main knitting system. Furthermore, a cam track 16 for guiding the needles 4 in the retracted position is formed in the shaped lock ring 8.

To select the needles 4 into the lower and / or upper needle cylinder, the buttons 17 of the patterning device, operated by the electronic patterning device, or from the patterning drum are used. The buttons 17 are at a height or at a height. The lock system of the upper needle cylinder 2 consists of the shaped lock rings 18 and 19 and the ring 20 ^{in the} range of the needle cylinder. at the height level of the lower guide elbows 51, a knitting cam track is formed between the shaped cam rings 18 and 19 into which the density locks 24 and 25 of both knitting systems extend. From said cam track 23 opens a cam track 26 for switching the needles into the lower needle cylinder 1, terminated by a bevel 260 '. Between the ring 20 and the shaped locking ring 19 there is a cam track 27 at the height of the upper guide elbows 52 for guiding the empty upper guide rails.

A button 28 is provided in the cam track 27 for crimping the guide elbows 52, which is arranged opposite the horizontal section of the cam track 23. In the cam track 13, a button is provided.

29, corresponding to the beginning of the knitting cam track 10. Further, there are pushbuttons 30 and 31 for switching the needles 4 which act on the guide nodes 52 at the height of the rib recesses that form the grooves of the needle rollers 1, 2.

Functions of the above-described device for the function of selection, respectively. the switching of the needles 4 between the needle cylinders 1, 2 is as follows. In place

2, the needles 4 are locked in the upper and lower guide sinkers 3, which are guided by the guide nodes 51 in the lock paths 9 and 9 respectively. 23. The buttons 17, according to the program, arrange the guide knobs 51 and 52 of all the lower selectors 5 into crushed and squeezed.

The lower guide sinkers 3, guided by the squeezed guide butts 51, are lifted from position X by the lifting edge 9 'of the cam track 9 and by means of needles 4 lift up the upper guide sinkers 2 so that their guide butts 51 are moved above the tip 18 ¹ 18 and continue on the 23rd cam track rising edge 9 ¹ rises to the point a, that is to the height when the lower guiding butts 52 of the selector 5 come to the level of the button 30, which is pressed in further. Thereby, the lower guide sinkers 2 flip over the lower guide sinkers 2, the tips of which open and release the lower hooks of the needles 4. The lower guide sinkers 3 are guided horizontally past the lock path 9, and the upper guide sinkers 3 follow the position A ¹ corresponding to position A , guided by cam tracks 23 upward, so that the needles 4 are switched to the upper sliders 2 ^and then knit in the upper needle cylinder 2. the empty bottom of the slider 2 are then lowered cam tracks 9 and the guiding butts 51 are chamfered 9 ¹ crimped thereby squeeze the lower guide butts 52 into the lock track 13.

The lower slider 2 taken along via buttons 17 vymáčknutých guiding butts 52 passes through cam track 13 under rising edge ¹ to 9 buttons 29. The button 29 is pressed in the guiding butts 52, thereby squeeze out the upper guiding butts 51 into the knitting cam track 10 The lower guide sinkers 2 by their horizontal movement through the needles 4 also hold the upper guide sinkers 2 at a horizontal level so that their guide elbows 51 pass under the tip 18 ¹ into the cam track 26. Here at C their upper guide elbows 52 hit the button 20, which pushes them deeper, thereby opening the upper guide sinkers 2 and releasing the upper hooks of the needles 4. The lower guide sinkers 2 / which hold the needles 4 are lowered by the tightening edge 10 ^{1 of the} knitting cam track 10, thereby switching the needles 6 into the lower needle cylinder. wherein the upper guide sinkers 2 extend horizontally through the cam track 26. The empty upper guide rails 2 are then lifted by the guide butts 51 through the cam track 26 until the guide rails 51 are crimped by the bevel 260 ', the corresponding guide lugs 52 squeezed into the cam track 27. Through this cam track 27 the upper empty guide rails 2 are guided up to to the button 28, which squeezes the guide butts 51 into the cam track 23. Before the buttons 17, the needles 4 and the empty guide rails 2 engage the needles 4 in the guide rails 2 ⁱⁿ both needle cylinders 1, 2 due to the course of the knitting cams 10 and 23 .

Various modifications may be made within the scope of the invention. E.g. working edges 9 ¹ . 10 'may be in the field of operation of the second guide elbows 52, with the entire locking system being appropriately adapted. Furthermore, classical locking means may be used instead of the locking rings. Also other means, such as pivot levers, may be used instead of buttons 17.

An advantage of the invention is that the device allows the selection and switching of needles between the needle cylinders by a simple and inexpensive device, thereby reducing the height of the lock system and

There is no need for shifters to divide the guide rails that guide the needles and which are empty.

Claims (3)

PATENT CLAIMS A device for selecting reed needles in the needle cylinders of a two-cylinder circular knitting machine for the manufacture of sock goods, wherein the needles are guided by guide sinkers on which pivotable selectors with two guide butts alternately selectable with cam lock paths for knitting needles or non-knitting positions, characterized in that the means for acting on the pivotable sinkers (3) are arranged at a height on the arc of the needle cylinder (1), wherein the needles (4) engage in the upper and lower guide sinkers (3). Device according to claim 1, characterized in that the means for acting on the pivotable selector are pushbuttons (17) behind which a lifting edge (51) is arranged in the direction of rotation of the needle cylinder at the level of one squeezed guide elbow (51). 9 ') for lifting the lower guide sinkers (3) and by means of needles (4) and for lifting the upper guide sinkers (3) to the level of the knitting cam track in the upper needle cylinder (2). Device according to claim 2, characterized in that under the lifting edge (9 ') for lifting the lower guide rails (3) and by means of needles (4) also raising the upper guide rails (3) to the height level of the knitting cam track (23) in the upper needle cylinder (2), a horizontal cam track (13) is provided at the height level of the second squeezed guide elbows (52) for feeding the needles (4) to the knitting cam track in the lower needle cylinder (1).