WO1982003096A1

WO1982003096A1 - Knitting machine

Info

Publication number: WO1982003096A1
Application number: PCT/DE1982/000039
Authority: WO
Inventors: Gmbh Memminger
Original assignee: Buck Alfred
Priority date: 1981-03-03
Filing date: 1982-03-02
Publication date: 1982-09-16
Also published as: DE3108041A1; DD202190A5; ES8303567A1; US4532781A; CS144682A2; JPS58500175A; EP0059919A1; SU1144622A3; JPH0213058B2; ES510049A0; EP0059919B1; CS237329B2; DE3108041C2; UA7211A1

Abstract

The knitting machine comprising at least one bed (1) is provided with parallel needles (2), movable axially and controlled by a cam (5). Sinkers (7) arranged between the needles are controlled by a cam (15) and bear on the bed (1) and comprise each a sinker blade (15). The sinkers (7) are transversally and longitudinally movable and are controlled so as to move, at the location of the stitch after sinking, in the opposite direction to the lowering of the cooperating needles and transversally outwardly, and after casting off, in the opposite direction to the outlet motion of the needle and transversally inwardly. To increase the working speed of the knitting machine and to obtain a fine spacing of the needles, the rods (12) of the sinkers (7) are guided in the needle bed (1) and are provided with guiding ribs for the neighbouring needle rods (3). A cam (16) is arranged close to the bed (1) which imparts to the sinkers (7) the outlet transverse motion.

Description

Knitting machine

The invention relates to a knitting machine with a needle carrier, which is equipped with needles which are guided in parallel, displaceable in the longitudinal direction and controlled by a needle lock curve, between which, controlled by a circuit board lock curve, overlapping the needle carrier edge and each having a platinum shaft, projecting transversely to the Needles as well as in their longitudinal direction are stored and controlled in such a way that at the respective knitting point after inclusion against the pull-off movement of the assigned needles and transversely to them outwards and after the stitch has been knocked off against the needle output movement and transversely to it be moved inside.

A circular knitting machine of this type is known from DE-OS 2 025 144. The fact that the circuit boards after closing, i.e. during the actual stitch formation process, which are moved against the needle pulling movement, it is achieved that the path to be covered by the needles during the pulling movement becomes correspondingly smaller, so that the needle lock curve can be made less steep. On the other hand, this allows the knitting speed to be increased significantly without excessive needle loading being associated therewith. The transverse movement of the sinkers with respect to the associated needles after the inclusion serves to

0 PI_ to transfer the board into the correct position for knocking off. After completion of the stitch formation process, when the respective needle is driven out again, the corresponding sinkers are brought back into the starting position against the pushing-out movement of the needle, whereby they are first moved transversely to the needles in order to achieve that they enclose the semi-finished row of stitches with their throats and noses and prevent the knitted fabric from being carried along when the needles are driven out.

In this circular knitting machine, the sinkers each provided with a sinker shaft are supported with their sinker shaft on a sinker lock curve, which is arranged outside a sinker ring screwed to the needle cylinder. The circuit board ring is provided with a horizontal flange in which radial slots are formed, in which the individual circuit boards are guided in a radially movable manner. The radial movement transverse to the needles is controlled by a special design of the sinker lock curve which simultaneously controls the sinker expulsion and which is assigned a sinker-like drive control curve for the sinkers arranged on a pot-like, stationary machine head which overlaps the flange of the sinker ring.

The construction of this circular knitting machine is relatively complicated and, among other things, requires that the needles inserted into the guide grooves of the needle cylinder are not only surrounded by the sinker ring, but also by the sinker lock curve and the sinker shafts. In addition, the circuit board control curve controlling two movements is relatively complicated, while on the other hand a certain minimum value of the needle pitch cannot be undershot, because otherwise a perfect position tion of the boards in the slots of the flange of the board ring is no longer possible.

The object of the invention is to provide a knitting machine in general with plates which can move longitudinally and transversely to the needle movement and which, with a simple, reliable construction, is distinguished by the fact that it allows very fine needle pitching to be achieved and at the same time at high speed can work.

To achieve this object, the knitting machine mentioned at the outset is characterized according to the invention in that the sinkers are guided on the needle carrier with their shaft, forming guide webs for the respectively adjacent needle shafts, and directly on the needle carrier an expulsion lock which gives the sinkers the transverse movement to the needles is arranged.

The fact that the sinker shafts directly form the guide webs for the needle shafts results in a very fine needle pitch, the smallest value of which is only due to the thickness of the sinkers. At the same time, the needles and the sinkers are easily accessible after the usual removal of the lock, while a sinker ring is completely omitted in circular knitting machines, so that a very simple and user-friendly construction results. The arrangement of the drive-out lock of the sinkers directly on the needle carrier further simplifies the structural relationships and makes it possible to dispense with complicated curved surfaces for this drive-out lock, so that it can be manufactured easily.

In a preferred, particularly simple embodiment, the circuit boards each engage the circuit board lock curve with a foot arranged on the circuit board shaft forming circuit board lock channel, which is arranged following the needle carrier and thus controls the movement of the boards in opposite and opposite directions to the needle movement.

The expulsion lock on _^ an¬ one on the parent _Nadelträgergrund having longitudinally of the needle carrier extending cam surface, the tine by a respective lug on the shank of each Pla¬ is scannable. The curved surface can be an oblique surface formed directly on the needle carrier, which can be widened towards the needle carrier and extends outwards, and which can be produced very easily with high accuracy on the needle carrier during manufacture.

In principle, it is possible to store the needle shafts directly on the surface of the needle carrier between the sinker shafts. In order to improve the guidance of the needle shafts and to reduce wear, however, it is advantageous if the needle shafts are mounted radially on guide webs inserted into the needle carrier, between which the sinker shafts are laterally guided. The guide webs thus have two functions: on the one hand they effect the lateral guidance of the sinker shafts and on the other hand they form the raceways for the needle shafts.

It is expedient if the sinker shafts protrude in the radial direction by a predetermined amount beyond the needle shafts, so that the needle shafts are securely guided over their entire radial extent. In order to ensure a permanent, secure engagement of the sinkers with their expulsion curve, it is advantageous that the sinkers and / or their shafts in the region of the expulsion lock are pressed radially inwards towards the needle carrier base by spring force. This prevents the needle heads from being carried along when the boards move outwards and the subsequent part of the Nadej = - If the shaft is lifted off the associated guide web, the arrangement can, if necessary, be such that the needle shafts in the area between the needle carrier edge and the drive-out lock are also pressed radially inwards towards the needle carrier base by spring force.

With the new circular knitting machine, the movement of the sinker can be controlled in such a way that a needle lock curve for the needles results from continuously curved sinusoidal arc pieces which merge seamlessly into one another, thus reducing the needle load to a minimum and at the same time keeping blows and vibrations away from the needles become. Similarly, the sinker lock curve can consist of contiguously curved arcs, so that no abrupt movements triggering vibrations and high mass acceleration forces occur during board control. ^*

The knitting machine can be operated with only one row of needles in the needle carrier, i.e. be designed as a single-speed machine, but the idea of the invention can of course also be applied to a two-speed knitting machine. Such a machine is then designed with a second row of needles arranged in a second needle carrier, between the needles of which there are also boards which are designed and controlled in accordance with the boards of the first needle carrier.

The knitting machine according to the invention can be both a flat and a circular knitting machine, the needle carrier in one case being a needle bed and in the other case being a needle cylinder or a dial. When running as a single-bed flat knitting machine Among other things, there is the practical advantage that without knitting deduction and without weights, which is with each. New beginning of a knitted fabric, for example after a Warenab ^¬ throw, otherwise required can be used. It is also conceivable for a double bed flat knitting machine, for example, to be equipped and equipped with a needle bed, for example the front bed, according to the invention, in order to be able to knit plain fabric on this machine without any deductions.

In the drawing, an embodiment of the subject of the invention is shown. Show it:

1 shows the needle cylinder of a circular knitting machine according to the invention with associated lock jacket, in a simplified schematic representation and in a cutout,

Fig. 2 shows the needle cylinder according to Fig. 1 in the axial

Section in a side view and on a different scale, illustrating a needle and a circuit board,

Fig. 3 shows the arrangement of FIG. 2, cut along the L Liinniiee ddeerr .Fig. 2 ^ in a side view and in detail,

4 shows the needle cylinder according to FIG. 1 in a top view ^ in a schematic representation and in detail,

5 shows the needle cylinder according to FIG. 2, with the illustration of three different needle and plate positions in a schematic illustration corresponding to FIG. 2, but in a detail,

Fig. 8 after the circuit board lock channel to the needle cylinder

Fig. 1 in a plan view and

B Fig. 9 shows the needle lock channel to the needle cylinder of FIG. 1 in a plan view.

The needle cylinder 1 of a circular knitting machine, which is not shown in any of its other known parts, is equipped on its circumference with latch needles 2, which are mounted so as to be longitudinally displaceable parallel to one another. The latch needles 2 have 3 feet 4 on their needle shafts, ie in a needle lock curve forming needle lock 10 channel 5 of a lock casing 6 surrounding the needle cylinder 1, which is of multipart design in a manner known per se, but which is not shown in detail. A drive mechanism, also not shown, produces a relative rotary movement between the lock casing 15 6 and the needle cylinder 1, so that the needle lock channel 5 gives the latch needles 2 the expulsion and pull-in movement required for the knitting process.

There is a circuit board 7 between two latch needles 2

2 ° arranged, which overlaps the needle cylinder edge 8 and has a sinker nose 9 as well as a throat 10 and a wedge edge 1. Each board 7 is provided with a board shaft 12 with which it lies directly between the shafts 3 of adjacent latch needles 2 on the

25 needle cylinder 1 is guided. As can be seen in particular from FIG. 3, for this purpose guide webs 13 are inserted radially into the needle cylinder 1 ^' and consist of a wear-resistant material which results in a good friction pairing with the needle shafts 3 and the blank shafts 12. The leading

- * - ⁰ Rungsstege 13 are arranged at a distance from the needle pitch and directly form the radial support and running surface for the needle shafts 3. At the same time, however, they cause the lateral guidance of the sinker running directly on the needle cylinder base in this embodiment.

^{3 *} - shafts 12, which in turn directly form guide webs for the needle shafts 3. Each platinum shaft 12 is provided with a foot 14 which fits into one of the lock - 8 - jacket 6 formed sinker lock channel 15 and is controlled by this in such a way that the sinkers 7 are given a movement opposite to the needle movement, as will be explained in more detail below.

On the needle cylinder 1, in the vicinity of the edge 8, there is a sinker drive lock which is in the form of an inclined surface 16, which is screwed directly onto the needle cylinder 1 and extends outward towards the needle cylinder edge 8, on which the sinkers 7 are each by means of a nose 17 formed on its shaft 12 are supported. The drive lock 16, in the manner shown in FIGS. 5, 6, causes the sinkers to be relieved of the sinkers when the sinker shafts 12 are driven out by the sinker lock channel 15

Switch needles 2 are moved radially outwards. In order to ensure that the lugs 17 are held in constant engagement with the drive-out lock 16, the sinker shafts 12 in the area of the drive-out lock 16 are under the action of a spring force directed radially inwards towards the needle cylinder base, that of two is produced all-round endless tension springs 18, which are supported laterally against projections 19 formed on the board shafts 12. The sinker shafts 12 protrude in the radial direction by a predetermined amount above the needle shafts 3 in the manner shown in FIG. 2, so that the needle shafts 3 can carry out their movement unaffected by the springs 18. In order to prevent that the needle shafts 3 in the areas of the needle heads during the radial outward movement of the ^sinkers' 7 are taken, they will be in the range between the closed Austriebs¬ 16 and the needle cylinder 8 through the edge of a. spring force exerted all around is pressed radially onto the guide webs 13. The sinker shafts 12 are formed with an open groove 21, which ensures that the radial mobility of the sinkers 7 is not impeded by the spring 20.

(MPI The circular knitting machine described so far operates as follows with reference to FIGS. 5 to 7:

In the closed position shown in FIG. 5, the latch needle 2 is driven through the needle lock channel 5. Further over the needle cylinder edge 8. The adjacent plate 7 lies on the needle cylinder 8 overlapping it and includes ^' with its nose 9 and its throat 10 the half-finished course of the knitted fabric indicated at 22.

After the thread has been inserted, the latch needle 2 goes down, controlled by the needle lock channel 5, while the board 7, controlled by the board lock channel 15, performs an opposite movement, i.e. is driven out. The nose 17 runs onto the inclined surface of the drive lock 16, whereby the plate 7 radially outwards in the direction of an arrow 23, i.e. is moved across the needles 2. This transverse movement has the effect that the knitted fabric 11 is released from the nose 9 and the throat 10 of the plate 7 (exclusion position). This radial movement of the individual plates 7 lying next to one another is illustrated in FIG. 4 for a knitting point.

After knocking off, as a comparison of the needle lock curve 5 with the blank lock curve 15 (FIGS. 8, 9) shows, there is still a certain relaxation of the stitch just formed, which results from the mutual displacement of the two lock curves 5. 15 reads. Then the latch needle 2 is again controlled to drive out, while the adjacent plate 7 executes an opposite pulling movement, in the course of which its nose 17 again slides radially inwards along the inclined surface of the drive lock 16 under the action of the springs 18, so that the nose 9 "and the throat 10 again enclose the knitted fabric 22 and prevent this from being raised by the knitting needle 2 at the raised W-lτc ¥ - After the needle has again reached the closed position according to FIG. 5, the described process is repeated,

From Fig. 9 that the latch needles 2 are no abrupt shocks aus¬ it can be seen that the needle cam curve absatzlos merging _/ curved continuous, is sinusoidal curved sections, which is ensured practiced or vibrations are transmitted. Similarly, Fig. 8 shows that the blank lock curve also consists of adjoining, continuously curved arc pieces 24 which are connected to each other at 25 by arc pieces with a smaller radius of curvature. The boards 7 therefore also experience a relatively smooth, jerk-free movement. Together, the sinkers and the needle lock curve result in a very high working speed of the knitting machine when the needle and sinker stress are small.

The exemplary embodiment described is a single-font machine which is only equipped with latch needles 2 and sinkers 7 in the needle cylinder 1. Basically, it is also possible to build a two-door machine according to the same principle. In this machine, there is then only an additional dial which carries the second row of needles, the same shaped plates 7 being arranged between the individual needles of this row of needles, which are controlled in their expulsion movement by a board lock channel provided in the dial lock and one of which on the dial is associated with the drive lock corresponding to the drive lock 16, by means of which they are moved with their lugs 17 in the manner described transversely to the sinker needles.

-BU

O In a fundamentally similar manner, as was explained above in connection with a circular knitting machine, the invention can also be implemented in the form of a flat knitting machine in a single-bed or two-bed design. In this case, the needle bed is used as the needle carrier instead of the needle cylinder.

The sinkers 7 designed as a sinker sinker also allow the production of thigh plush, in which case different handle lengths can be achieved by using different sinker sinkers set up for the respective handle length.

In addition, it is conceivable a new Strick¬ machine of the type described a pattern device to you, to be able to produce estricke Jacquard or Kleinmusterg ^'.

"-gυ R E OiV.PI

Claims

1.Knitting machine with at least one needle carrier, which is equipped with needles guided in parallel, displaceable in the longitudinal direction and controlled by a needle lock curve, between the plates controlled by a plate lock curve, overlapping the needle carrier and each having a plate shaft, which project transversely to the Needles as well as in their longitudinal direction are movably supported and controlled in such a way that they are at the respective knitting point after being enclosed against the pulling-off movement of the assigned needles and transversely to these outwards and after knitting the stitch against the needle-driving movement and transversely to this inwards are moved, characterized in that the plates (7) are guided with their shank (12) to form guide webs for the respectively adjacent needle shafts (3) on the needle carrier (1) and directly on the needle carrier (1) one the boards (7) the transverse movement to the needles (2) dividing drive lock (16) is arranged.

2. Knitting machine according to claim 1, characterized gekenn¬ characterized in that the sinkers (7) each with a on the sinker shaft (2) arranged foot (14) in a form the sinker lock curve Platinen¬ lock channel (15) engage the needle carrier (1st ) is arranged below.

3. Knitting machine according to claim 1 or 2, characterized in that the drive lock has a arranged on the needle carrier base, along the Nadel¬ carrier Kurv.enflache (16), each by a nose (17) on the shaft (12) of each board (7) can be scanned.

4. Knitting machine according to claim 3, characterized gekennzeich¬ net that the cam surface is a directly on the needle carrier (1) in the vicinity of the edge (8) formed, to the needle carrier edge (8) to the outside widening inclined surface (16).

5. Knitting machine according to one of the preceding claims, characterized in that the needle shafts (3) in the needle carrier (1) inserted guide webs (13) are radially mounted, between which the Plati¬ nenschafts (12) are guided laterally.

6. Knitting machine according to claim 5, characterized gekennzeich¬ net that the sinker shafts (12) in the radial direction by a predetermined amount over the needle shafts (3) are formed projecting.

7. Knitting machine according to one of the preceding claims, characterized in that the sinkers (7) and / or their shafts (12) in the region of the drive lock (16) are pressed radially inwards by spring force onto the needle carrier base.

8. Knitting machine according to one of the preceding claims, characterized in that the needle shafts (3) in the region between-the needle carrier edge (8) and the Aus¬ drive lock (16) are pressed radially inwards by spring force onto the needle carrier base. 9. Knitting machine according to one of the preceding claims, characterized in that the needle lock curve (Fig.

9) consists of continuously curved sinusoidal arc pieces 5 which merge into one another.

10. Knitting machine according to one of the preceding claims, characterized in that the platinum lock curve (Fig. 8) consists of contiguous ° continuously curved arc pieces (24).

11. Knitting machine according to one of the preceding claims, characterized in that it is formed with a second ^ needle row arranged in a second needle carrier, between the needles of which there are also sinkers (7) which correspond to the sinkers (7) of the first needle holder ( 1) are formed and controlled.

0 12. Knitting machine according to ^" one of the preceding claims, characterized in that the Kulier-Einplinplinen (7), which is matched to the respective handle length, is set up for the production of Henkel plush. 5

13. Knitting machine according to one of the preceding claims, characterized in that it is assigned a pattern device.

'BÜKt 0ft.PI