DE1253401B - Flat edge knitting machine - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

Int. Cl .:

D04b

GERMAN

PATENT OFFICE

EDITORIAL

SiBUOTHEK DES DEUTSCHE! PfeTgHTiitES

German KL:

Number:
File number:
Registration date:
Display day:

25a-4

C28834VIIa / 25a
5th January 1963
November 2nd, 1967

The invention relates to a flat edge knitting machine, System Cotton, with a movable one Support bar for the machine needles, which by means of an eccentric drive from the rest position to the Working position for supporting the heads of the machine needles during pressing can be brought.

This proposal (German patent 1217 017) already solves the problem on which the invention is based, to ensure reliable pressing of the machine needles in flat edge knitting machines; because the horizontally arranged machine needles of these edge knitting machines are subject to heavy loads, especially during the pressing process. This often leads to the fact that the machine needles or at least some of them are bent by the pressure of the sinker head and the needles are no longer in one plane along the fontur. The malfunctions that occur as a result can therefore be avoided by providing support for the machine needles. ao

Another known solution to this problem (German patent 175219) is the machine needles during the pressing constantly rest on the knock-off comb and have it supported against the pressure of the press. With the modern Machine types where the sinker head represents a stationary pressing edge and where the sinker bar is movable, such a support for the machine needles is not applicable.

In another known solution (German patent 175 219) the horizontally arranged Chair needles relieved of the effect of the goods take-off while working with platinum samples, to avoid bending the fecal and platinum needles. Relieving the needles from However, the withdrawal of goods during the pressing process again has an unfavorable influence on the formation of the stitches.

This object mentioned at the beginning is achieved according to the invention in that the movable support bar is mounted on the shaft, which also carries the bar for the sinkers, and against the effect a spring can be brought into the working position together with the bar.

Furthermore, according to the invention, the support bar is adjustable by means of a screw and stop as well as by a pin over a latch with the support bar assigned to the machine needles in the Lockable working position and also provided with a short lever with a pin in a slot of the bolt engages, on which a lever linkage acts, through which the support bar by means of the front surface Edge knitting machine

Applicant:

William Cotton Limited,

Loughborough, Leicester (Great Britain)

Representative:

Dipl.-Ing. R. Bibrach, patent attorney,
Göttingen, Pütterweg 6

Named as inventor:

William Bentley, Oadby, Leicester;

James William York, Leicester (Great Britain)

Claimed priority:

Great Britain 5 January 1962 (465)

downward movement of the support bar can be brought back from its working position to the rest position with a delay.

The invention is shown in the drawing, for example. Show in detail

1 shows a cross section through a flat edge knitting machine,

Fig. 2 to 4 enlarged details of the active organs in different operations during the Working and

5 shows an enlarged illustration of the support bar drive.

As in Fig. 1, the flat edge knitting machine has machine needles 2 which are fastened to the machine needle bar 1. The actuation mechanism for this is assigned, namely an upper lever connection 3 which is connected to the upper shaft 4 , from which a roller lever 5 with a roller 6 extends, which is actuated by the eccentric 7 on the main eccentric shaft 8. The sinker sinkers 9 are arranged on the head piece 11 of the machine frame and are fastened in the sinker head piece 10 , which has a pressing edge 10 a for the machine needles 2 . The sinkers 12 sit on the bar 12 a, the actuating mechanism of which consists of a running roller lever 13 with a roller 14 which is actuated by an eccentric 15 on the main eccentric shaft 8. A support bar 16 assigned to the machine needles 2 is connected to the roller lever 17 , its roller

709 680/73

Claims (3)

18 is moved by the eccentric 19 on the main eccentric shaft 8. In addition to the support bar 16 assigned to the machine needles 2, a movable support bar 20 is provided which is fastened below the sinker head piece 10 on the rotatable lever 21. To move the support bar 20 between a rear rest position and a front working position, the front part 20 a of the support bar 20 is approximately below the pressing edge 10 a for the machine needles 2, the lever 21 is on an upper shaft 22 for the operation of the bar 12 a for the sinkers 12 attached. The vertical lever 23 establishes the connection between the shaft 22 and the roller lever 24 with the roller 25, which is actuated by an eccentric 26 arranged on the main eccentric shaft 8. The lever 27 establishes the connection between the shaft 22 and the roller lever 13, 14. A short lever 31 ao with a pin 32 which engages in a slot 33 in one end of the bolt 34 is also arranged on the shaft 22. The latter sits rotatably on a lever arm 35 α of the toggle lever 35, which in turn is rotatably mounted on the upper shaft 4. The other lever arm 35 6 of the toggle lever 35 has an adjusting screw 35 c which strikes a stop 40 which is rotatably mounted on a bracket 41 which in turn is fastened to the machine table 42. The stop 40 is also connected via the connecting lever 43 to the roller lever 17, which in turn is connected to the support bar 16 for the machine needles 2. The support bar 20 is biased towards the inoperative position by a spring 48, an adjusting screw 49 on the stop 50 of the sinker head precisely determining the working position of the support bar 20. The bolt 34 is connected by a spring 51 to the lever arm 35 a of the toggle lever 35 and biases the end portion 34 a of the bolt 34 against a pin 35 d on the toggle lever arm 35 a. The mode of operation of the device according to the invention is shown in FIGS. FIG. 2 shows the support bar 20 in a position free in front of the pressing edge 10 a for the machine needles 2, the support bar 20 being held against the stop 52 by the spring 48 according to FIG. This figure as well as FIG. 5 also show that the front part 20 a of the support bar 20 is conical and is provided with a bevel 20 b located on the underside and with an arcuate underside 20 c. F i g. 3 shows that when the machine needles 2 are advanced into a position in which their tongues are under the pressing edge 10 a, the support bar 20 is moved forward by turning and its front part 20 a is brought under the tip of the needles. This takes place when the machine needles 2 advance while the adjusting screw 35c (Fig. 1) of the toggle lever part 35 & hits the stop 40, so that the toggle lever 35 is turned clockwise, the bolt 34 is lowered and the lever arm 21 is swung forward , both springs 48 and 51 being tensioned during the process, so that the support bar 20 comes into resilient engagement with the stop 49. During the pressing process (Fig. 4) the bar 12 a lifts up for the stop plates 12 and carries the support bar 20 with it, so that it presses up against the machine needles 2 and presses their tips against the pressing edge 10 a. This position of the support bar 20 is maintained while the machine needles 2 are returned and the old stitches are placed on their tips. A delayed return of the support bar 20 from the working position to the rest position is achieved by the normal forward movement of the support bar 16 (Fig. 1) assigned to the machine needles 2, which rotates the stop 40 counterclockwise and thereby temporarily prevents the toggle lever 35 from doing so to return counterclockwise and consequently the return of the bolt 34 is also delayed. The front conical part 20 a of the support bar 20 and the slope 20 b allow the presence of the sinkers 12, over which the conical part 20a protrudes when the support bar 20 is in the working position according to FIG. 4, from which it can also be seen that the support bar 20 is mainly above the bar 12 a for the sinkers 12, which it supports in the working position. Patent claims: 1. Flat edge knitting machine, System Cotton, with a movable support bar for the machine needles, which by an eccentric drive from the rest position to the working position for support the heads of the machine needles can be brought during pressing. characterized, that the movable support bar (20) is mounted on the shaft (22), which is also the Barre (12 a) for the Abehlag sinkers (12) carries, and against the action of a spring (48) together can be brought into the working position with the bar (12 a). 2. Flat edge knitting machine according to claim 1, characterized in that the support bar (20) by means of screw (35 c) and stop (40) is adjustably mounted and by a pin (35 d) via a bolt (34) with which the machine needles (2 ) associated support bar (16) can be locked in the working position. 3. Flat edge knitting machine according to claim 1 and 2, characterized in that the Support bar (20) is provided with a short lever (31), the pin (3 ') of which is inserted into a slot (33) of the bolt (34) engages, on which a lever linkage (17, 43, 40, 41, 35) acts through which retarding the support bar (20) from its working position by means of the forward movement of the support bar (16) can be returned to the rest position. Considered publications:
German patent specifications No. 175 219, 137 963. Legacy Patents Considered:
German Patent No. 1 217 017. 1 sheet of drawings 709 680/73 10.67 © Bundesdruckerei Berlin