DE1966886A1 - Circular knitting machine pattern selector - with sinker assembly reducing selection period to increase output rate - Google Patents

Abstract

Circular knitting machine pattern selector includes a hollow needle cylinder supporting on its inner wall a circular array of axially displaceable needles whose butts are engaged by needle plungers supported by the inner wall axially slidably and pivotably. Plungers have lower butts engaging rebates in upper parts of selector sinkers a number of which is arranged in a peripheral array spaced radially inwardly of the inner wall and pivoted at their lower on the inner wall of the needle cylinder. Sinkers are pivoted towards the inner wall under the influence of selector slides arranged in an axial flow and extending radially outwardly towards the inner wall. Slides engage a stop on the sinkers for pivoting them, whereby the plungers are pivoted such that their teeth at their upper ends can engage a control cam groove which has three axially effective zones. One zone is provided with resetting profile for resetting selected plungers and sinkers at the end of a knitting cycle, a further zone in which the teeth of the plungers are engaged in the cam groove and a final zone in which the plungers displace their associated needles axially into their resp. knitting positions.

Description

The invention ¹ relates to a pattern device for dog knitting machines, by means of which the degree of criticism is facilitated and the side required for this is reduced, and by means of which the errors in the arrangement ¹ are reduced to a minimum compared to the systems commonly used. At the same time, improvements in the selection devices in these machines are created by the invention, by means of which the disadvantages observed in knitting machines of this type are eliminated is considerably reduced within each distance for the selection process to be effected by the cough wings and the associated components, where- |

is hindered by this process.

The problem of choosing the blame is solved by that the period of time is not changed by the "voting process, which is necessary for the normal course of the movements of the knitting needles.

In other known systems, the selection is maintained by two or more sexton wings per rebuke, which with

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working side thrust. A larger number of Components required and thereby increased the height of the device. These disadvantages are eliminated by the invention.

The improvements are characterized by the fact that the preparatory phase for controlling the movement of the!, "Ennobles is effected by a single ii "a, pusher, between the Pattern rocker and the relevant i * "nobility is arranged in such a way, that the number for each work cycle of the relevant liadel is performed within a period of time included in the previous cycle, with the intervening needle pusher the hit "iiahl maintains to them through a reciprocating motion on the! censure in their work cycle transferred to. This will make the available for the Vahl standing time is not limited to one work cycle, but has enough leeway beforehand to carry it out. This will increase the height of the loaded cylinder Area and the number of components working in this area is reduced.

Further details, advantages and features of the invention result from the following description. In the drawing, the invention is illustrated by way of example, namely demonstrate:

1 shows a longitudinal section through a circular knitting machine, wherein a is between a rocker and a Huster liadel arranged liadelstößer effective in its position.

Fig. 2 is a representation similar to FIG. 1, wherein the The needle pusher is in its inoperative position;

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5 shows the coupling area between the l. needle pusher and control slots}

Figure 3 is an end view of a squatting area for placement the lTa, delstößer;

5 shows an illustration of the resetting process of the needle push rod;

Fig. 6 is a schematic illustration of the relationship between the width of a pattern slider and that of the tooth a pattern swing arm described circular arc, and

7 shows a schematic representation of the idea according to the invention for achieving the smallest possible movement of the tooth of a model rocker between its end positions.

The main working components of a circular knitting machine are! Coughing 1, coughing wings 2 and leaf-shaped coughing slide 3 to operate the first-mentioned components.

The pins provided with a hook 4 and a stop 5 each correspond to a needle pusher 6 which engages in a slot 7 of a slider 8 on which the stop 5 of the needle 1 rests. The swing pattern 2 have a rear stop 9> ^a uf which the Hadelstößer 6 rests in its Fig. 2 position shown and a front stop 10 which cooperates with the cams 3.

According to FIG. 4, stitch cams are provided for actuating the stops 5 arranged on the hadels 1 at each knitting station,

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which include a lifting cam 30 & which is movable between an operative position shown in Fig. 4 and a rear inoperative position so that it does not engage with the stops 5 of the needles 1, and a recessed track 30 for the passage of the stops 5 of the ! Include rebukes 1.

Usually housed in a housing for this purpose Sample slide 3 are here by a fixed Covered carrier 11, which is connected to an angle iron 12, which in turn on a machine component I3 by means Screws I4 and 28 is attached.

The rotating part of the machine consists of the needles 1, the pattern rocker 2 and the needle pusher 6, all in one Needle cylinder 16 are arranged. The sample slide 3 with the their associated parts, the machine component I3 and upper Supports 17 form the fixed part of the machine.

Figures 1 and 2 also show springs 23 and 24 for holding the pattern swing 2, a rear cover 25 for the Sample slide 3 »some screws 26 to adjust the height the support I7, enforce the elongated holes 27 in the supports, and Finally, screws 28 for holding the angle iron 12. Furthermore, a locking part or locking lever 20 is provided, which can be pivoted about the carrier 11 by means of a screw 21 and can be locked by a further screw 22 which can be operated by hand is.

The design of the sheet-shaped pattern slide 3 and the Type of selection of the pattern slider for a specific knitting pattern is detailed in the German Offenlegungsschrift 1 953 677

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", so that a more detailed explanation in this regard is not available is required.

Basically, every working cycle of a needle in a waistband knitting machine consists of selecting, raising, lowering and deleting of choice. Usually all of these processes are developed within each cycle, which poses no problem provided that the Number of sections in the knitting machine is relatively small. This results from the fact that the selection is without hindrance can be carried out if the available ™ Room is big enough.

however, the number of sections is large, the space for selection is greatly reduced, which may lead to the correct sequence of operations is hindered. The inventive Voter arrangement serves to solve this problem.

The voter arrangement works as follows: In the inactive position, as shown in FIG. 2, the pattern wings 2 are from the pattern sliders 3 are separated and thus receive no drive, while the needle pusher 6 with rounded corners 29 on the needle cylinder 16 and their teeth 18 are outside the slot 7.

When operated, as shown in FIG. 1, the pattern swing 2 moved to the left in the sense of the drawing and straighten the needle pusher 6 straight, which are thereby pressed against the needle cylinder 16 and at the same time to control the needles 1 via their stop 5 engage with their tooth 18 in the slot 7 of the slider 8, on whose inclined surface 42 the tooth rests.

If you look at the path of the needle pusher 6 in the slot J in the front view 4, it can be seen that this needle pusher 6

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during a work cycle a preparatory phase A, a Go through work phase B and a rest phase G, in which a deletion profile 31 removes the needle pusher from the slot 7. This The extinguishing process is brought about by a thrust which the extinguishing profile exerts on the tooth 18 of the needle pusher β.

The selection preparation phase A thereby takes a larger one A period of time than it is intended for a work cycle, since it includes a range of the previous cycle, whereby the selection phase can develop sufficiently.

The sample rocker 2 has a head 19, by means of which a lateral thrust is exerted on the load trigger 6 in order to prevent it to set in motion. The function of the stop 9 is based on the fact that its stop surface 15 prevents the downward movement of the needle plunger 6 limited so that the tooth 18 is opposite the slot 7.

As FIG. 6 shows, the sexton 3 must have a width D have, which corresponds to the width of the stop 10 of the cough swing arm 2, which describes an arc as it moves, is covered..This value D should not be exceeded in order to achieve the smallest possible amount. It is even better if the value is reduced as much as possible, what is intended by the invention.

In order to achieve this goal, the arrangements are made that the deflection of the stop 10, as shown in FIG. 7, is in an arc between a predetermined rest point P and a selection point S, with the condition that the maximum value of the horizontal projection of the deflection, i.e. H. the Part corresponding to section IiIT on a vertical axis

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OR lies, on egg the radius OH is included in the deflection PS.

This makes the width H of the projection at a minimum decreased that. corresponds exactly to the width that a sample slide 5 must have to move the field of motion of the stop 10 from Point P to include point S.

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Claims (2)

Patent claims: 1. Pattern device · for dog knitting machines, marked by a needle cylinder (16), a plurality of I-Iuster swing (2) attached to the needle cylinder (16) arranged and pivotably supported at their lower ends are, each pattern rocker (2) one opposite the needle cylinder radially movable upper end region (I9) and one below of the upper end region (I9) has arranged stop (1O), Sample slide (3), which are supported near the needle cylinder (16) and with the stop (1O) of the selected coughing wings (2) can be brought into engagement around the upper end region (19) of these Uadelschwingen (2) opposite the needle cylinder (16) move inward, a plurality of needle lifters (6) relative to the needle cylinder (16) and the swing arms (2) are movably mounted, and each has a lower end portion and one with a tooth (18) provided upper end portion, each needle pusher (6) in accordance with an inward movement of an upper end region (19) associated therewith associated sample rocker (2) can be pivoted in order to move its tooth (18) towards the outside relative to the needle cylinder (16), an annular control slot (7) which extends along a path curve described by the needle lifters (6), and the Teeth (1S) of the needle pusher (6) which swing the selected sexton (2) are assigned to this selected pusher (6) in the axial direction of the needle cylinder and relative to the to relocate the assigned sample swing arm (2), 409881/0003 ORIGINAL INSPECTED a multitude of needles (i), which are in the needle cylinder (16) for Execution of knitting processes relative to the needle cylinder (16), the needle pusher (6) and the sample rocker (2) movably mounted are, with each! rebuke (i) a lower band area and has a stop (5) and in accordance with an axial displacement of an associated! selected sample rocker (2) corresponds in the axial direction of the desliadelzylinders (16) is displaceable, and each "needle (i)" for an independent "displacement in the axial direction of the" needle cylinder (16) can be separated from the associated needle pusher (6) and the sample rocker (2), an annular mesh cam which extends along a path curve described by the cues (i) and with the stops (5) of those needles (i) which are to perform a knitting process come into engagement in order to reproach them in the axial direction of the needle cylinder (16) to move, this Maschennoeken has at least one effective zone in which the selected needles perform a knitting process, and wherein the Control slot (7) has at least first, second and third zones which are in a predetermined relationship to the effective zone of the mesh cam, the first zone being an extinguishing zone and an extinguishing profile arranged in the control slot (7) (51) includes the selection of associated needle lifters Delete (6) and pattern swing (2) by using the teeth (18) of the selected needle pusher (6) during execution of knitting operations through the associated needles (1) engages and pushes inward, the second zone is a selection zone in order to effect a selection of mutually associated needle lifters (6) and pattern wings (2) by using the teeth (18) of the selected needle pusher (6) before the initiation of the subsequent procedure to be carried out by the associated needles (1) Knitting process, and wherein the third zone is an operative zone and includes means to the selected 409881/0003 BAD OHiGlNAL - ίο - To move the needle pusher (6) in the axial direction of the needle cylinder (16). 2. Pattern device according to claim 1, characterized in that that the lower end area of each needle pusher (6) from the upper band area (19) of the respectively assigned sample rocker (2) and extends downward along the side surface of that sample rocker (2) against which said upper end region extends moved as a result of an engagement with one of the sample slide (3). 409881/0003 BATH ORIGINAL lee r s e ite