DE3510500A1 - ADJUSTING DEVICE FOR THE STITCH LENGTH ON ROUND KNITTING MACHINES - Google Patents

Description

iLiECkÄ BEDS

Patent attorneys Dipl.-Ing. H.-Peter Lieck

European Patent Attorneys Dipl.-Ing. Jürgen Betten

Maximiliansplatz D-8000 Munich ® 089-220821 Telex 5 216 741 list d Technolaw® Telegram Electropat

- 4 adjustment devices for the stitch length on circular knitting machines

The invention relates to a central control or setting device for simultaneously varying the mesh length and
the location of yarn guides on a circular knitting machine with
Multiple thread feed.

It is common practice to measure the length of the machine on a circular knitting machine with multiple yarn feed to be formed by vertical adjustment of the individual countersink at each of the yarn feed and loop formation points to adjust the working paths of the knitting needles in a vertical position Change direction. To do this, it is also necessary to adjust the vertical positions of the twine guides, otherwise the knitting needles may come into engagement with the yarn guides, causing the needles to break may have. The vertical adjustment of the individual countersink at each stitch-forming station must therefore with one corresponding vertical adjustment of the individual twine guides. It is obvious that the individual adjustment of the countersink at each loop formation point and the individual adjustment of the yarn guides are time-consuming processes and require operating personnel who are skilled in setting needle cores trained to ensure that at every thread feed and loop formation point around the circular knitting machine around the correct setting is made.

The object of the invention is to provide a central control for changing the mesh length and the arrangement at the same time to create the yarn guides that are operated by a relatively untrained operator in a short time can be, and in which the adjustment of the stitch length on each individual yarn feed and stitch formation ·

parts is identical.

This object is according to the invention with that in claim 1 and with regard to advantageous refinements in the subclaims marked adjustment device released.

In an advantageous embodiment of the new adjustment device for the stitch length on circular knitting machines an inner lock support ring is provided, the surrounds the needle cylinder and the countersink at each yarn feeding and loop forming station of the knitting machine supports. On the inner lock support ring are also the yarn guides at each of the yarn feed and loop forming points supported. The inner lock support ring is in turn on a stationary base of the machine Mounted vertically adjustable, so that an adjustment of the inner lock support ring in the vertical direction transmits a corresponding amount of vertical adjustment to the needle core and the thread guides, in this way to change the length of the loops to be formed, while the yarn guides automatically remain unchanged The yarn feed ratio to the hooks on the tops of the needles will remain.

The adjustment of the inner lock support ring in relation to the fixed base takes place with the help of a threaded connection between this inner lock support ring and an adjustment ring, which is in a fixed vertical position for rotation is supported by an outer lock support ring carried by the fixed base. The adjustment ring is with

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Rotated with the help of a small, manually rotatable setting gear, which is formed with one on the setting ring Toothing meshes. By turning the small one-setting gear by hand, the setting ring becomes a Rotary movement mediated through which the inner lock support ring and the countersink supported by it at the same time and yarn guides experience a vertical movement. This results in a simultaneous adjustment of the ^ q Countersink and thread guides if the inner lock support ring is adjusted in the vertical direction.

The following is the invention with further advantageous Details based on a schematically illustrated AusjK management example explained in more detail. In the drawings shows:

1 shows a vertical section through the needle cylinder of a circular knitting machine with an associated zentra-2Q ler adjustment device;

FIG. 2 is an enlarged partial vertical section taken substantially along line 2-2 in FIG. 3;

Fig. 3 is a partial plan view of the inner lock support ring with assigned components.

As can be seen in particular from FIG. 1, the circular knitting machine has a needle cylinder 1 with needle grooves or needle grooves 2 formed vertically in its outer circumferential surface, in which knitting needles 3 are mounted so as to be vertically movable. To the needle cylinder 1 extend support carrier 4 for the lock parts, which _oc on the top of an inner lock support ring 6, for example. are fastened by means of screws 5. On these support beams 4 needle control eccentrics 7 are supported, which on

Feet provided on the knitting needles 3 act around the vertical path of movement of the upper, hook-shaped ends of the knitting needles in the formation of loops at each yarn feed and loop formation point.

Sinkers 8 work together with knitting needles 3 during loop formation, which sinkers in a sinker guide ring 9 are mounted radially displaceable. The radial position 2Q of the plates 8 is controlled by a plate eccentric 11, which is attached to a sinker cap 10 which is supported by a sinker cap ring 12. At The underside of the needle cylinder 1 has a drive gear 13 attached, which can be driven in a conventional manner is to rotate the needle cylinder 1 while knitting.

On a base support ring 14, an outer lock support ring 16 is fixed in place, for example by means of screws 17 Position attached. The inner lock support ring 6 is vertically adjustable on the outer lock support ring 16 by means of a Device adjustable in the vertical direction, and a rotary movement of the inner support ring opposite the outer support ring is prevented by a guide device, which is shown as a guide pin 15 is, which is fixed at its upper end in the outer lock support ring 16 and its lower end is slidably received in a corresponding bore in the inner lock support ring 6. Preferably are about six guide pins 15 at regular intervals

_o _ distributed around the circumference of the needle cylinder 1.

The vertically adjustable device that makes the inner lock support ring 6 vertically movable on the outer lock support ring 16 holds, has an adjusting ring 18, the

__ surrounds the outer circumference of the inner lock support ring 6

and is connected to this by a thread 19. In addition

Thread includes an external thread 19a (Fig. 2), which on the outer circumference of the inner lock support ring 6 is formed, as well as a matching internal thread 19b, which on the inner peripheral surface of the adjustment ring 18 is formed.

The outer peripheral portion of an annular adjustment ring support 21 is for example by means of screws 22 on

^ q attached lower part of the outer lock support ring 16, while on the inner peripheral part of the ring-shaped adjusting ring support 21, the lower side of the adjusting ring 18 is slidably mounted. As shown in FIG. 2, there is a bore formed in the inner lock support ring 6

, g the lower end of a compression spring 20 is supported, the is received with its upper end in a bore in the outer lock support ring 16 to the external thread 19a and the internal thread 19b in resiliently resilient engagement to hold together when they are moved into the setting position. There are again about six compression springs 20 Distributed around the needle cylinder 1 at regular intervals from one another.

In the outer lock support ring 16, a small adjustment gear 23 is mounted for rotation by hand and arranged so that it is in engagement with a toothing which extends around the outer peripheral surface of the adjustment ring 18. With the small adjusting gear 23 an upwardly extending shaft 24 is formed in one piece _{orv, which is rotatably supported in a bore in the outer lock support ring} 16 and the upper end of which lies essentially in one plane with the top of the outer lock support ring 16. The shaft 24 with the adjusting gear 23 is provided with means which enable rotation and are shown here in the form of a hexagon socket 24a. It is only a small adjustment

gear 23 shown, but it is obvious that in various places around the circular knitting machine a plurality of small adjusting gears 23 can be arranged, which are to be provided at a suitable location to of to be operated manually by an operator.

This is how the inner lock support ring 6 is opposite the outer lock support ring 16, the fixed base support ring 14

jQ and the needle cylinder 1 with the help of the thread 19 between the adjusting ring 18 and the inner lock support ring 6 adjustable in the vertical direction. By turning the small setting gear 23 by hand on the part of the operator, the setting

j ^ g ring 18 rotated to thereby the inner lock support ring 6 optionally to raise or lower, while the spaced guide pins 15 a Prevent relative rotational movement between the adjustment ring 18 and the inner lock support ring 6.

Around the needle cylinder 1 are arranged from four to six support brackets 25 for the thread guide support ring, the lower ends of which are attached to the inner lock support ring 6, while their upper ends are attached to a thread guide support ring 26 are fastened e.g. by means of screws 27. Around the thread guide support ring 26 are spaced from one another Thread guides 28 attached to the underside by means of screws 29. A support bracket belongs to each thread guide 28 30 and a thread guide 31, which hooks the upper

_ _0- shaped ends of the knitting needles 3 supplies the yarn to be processed into the knitted fabric.

On the outer lock support ring 16 is one of the number of support brackets 25 for the thread guide support ring corresponding-

"_ De number of support brackets 32 for sinker caps with the attached lower ends. These have arm areas

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which extend horizontally through cutouts in the support brackets 25 for the thread guide support ring, as in FIG. 1 shows. The sinker cap ring 12 is on the inner horizontal arm portions of each of the support brackets 32 for the Circuit board cap ring is fastened by means of screws 33, for example. So that the sinker cap ring 12 is just like the sinkers 8 are held in a fixed position relative to the needle cylinder 1 when the inner lock support ring 6 is vertical jQ is adjusted to the vertical position of the trajectory of the knitting needles 3 and the vertical position of the thread guides 31 to change.

The central control according to the invention is so output specifies that only the inner lock support ring 6 can be moved in the vertical direction into an adjustment position. There the support carrier 4 for the lock part and the associated needle eccentric 7 and the support brackets 25 for the thread guide support ring and the associated thread guides 31 from the inner lock support ring movable in the vertical direction 6 are worn, takes place with a vertical adjustment of the inner lock support ring 6 at the same time automatic adjustment of the stitch length and the arrangement of the thread guides. A vertical adjustment __ of the inner lock support ring 6 takes place in a simple manner Way from a single convenient point on the knitting machine by inserting a hex wrench in the hexagon socket 24a and turning the small adjusting gear 23 by hand. This will make the setting _ Ring 18 rotated and the inner lock support ring 6 around the

desired extent moved in the vertical direction. Since the needle control eccentric 7 and the thread guide 31 at the same time are adjusted in the vertical direction at each of the yarn feed and loop formation points, one takes place __ Adjustment of the stitch length by the same amount all yarn feed and loop formation points around the sewing

del cylinder around, and it remains the same ratio

between the thread guides and the hooks of the knitting needles.

Claims (5)

ÜECK & BETTEN 3510500 Patent Attorneys Dipl.-Ing. H.-Peter Lieck European Patent Attorneys Dipl.-Ing. Jürgen Betten Maximiliansplatz D-8000 Munich ® 089-22 08 Telex 5 216 741 list d Technolaw® Telegram Electropat claims 1. Adjustment device for a circular knitting machine with multiple yarn feed, on which a thread guide on each Feed point of a plurality of latch needles arranged in a circle feeds a thread for loop formation and which is of such a design that the length of the loops formed by the thread on the needles and the position the thread guide is individually adjustable in relation to the needles, characterized in that the adjusting device is operable to adjust both the mesh length and the position of the thread guide (31) at each thread feed point of the circular knitting machine at the same time adjusted, whereby the position of the thread guides in relation to the needles automatically remains unchanged, regardless of the length of the loops to be formed on the needles. 2. Adjustment device according to claim 1, wherein the latch needles arranged in a circle in one Needle cylinder are mounted vertically movable and have needle control eccentrics that surround the needle cylinder and are operable to raise and lower the needles to knit the fed yarn, and at which surrounds and on a solid base the needle cylinder 35 Ί 0500 supported at a fixed height on the base,
characterized, that an inner lock support ring (6) surrounds the needle cylinder
and supports the needle control eccentric (7) in a fixed position,
that a thread guide support device is fastened to the inner lock support ring and carries the thread guide (31), and that
Adjusting devices are provided which can move the inner lock support ring (6) perpendicularly with respect to the fixed base
hold, with an adjustment of the inner lock support ring in the vertical direction the needle control eccentrics (7) and the
Thread guides (31) a corresponding extent of a vertical
Adjustment mediates, increasing the length of the to be formed
Loops is changeable while the thread guide opposite
the needles are retained in the same thread feed ratio. 3. Adjustment device according to claim 2, characterized in that the setting _"0 means an adjusting ring (18) which is rotatably mounted about the inner lock support ring (6), an external thread (19a) on the outer circumferential surface of the inner lock support ring, an internal thread (19b) on the inner Circumferential surface of the adjusting ring (18) which engages with the external thread on the inner lock support ring (6), as well as a device by means of which one rotation can be transmitted to the adjustment ring in one direction, the inner lock support ring (6) being liftable in the vertical direction, and in the opposite direction, with the inner lock support ring in the vertical Direction is lowerable. 4. Adjustment device according to claim 3, characterized in that the device by means of which the adjusting ring (18) is rotated 35 is transmitted, has a toothing around the formed around the outer peripheral surface of the adjusting ring (18) is, a small adjusting gear (23) which is rotatably supported with respect to the fixed base and its Teeth with the toothing on the outer peripheral surface of the adjusting ring (18) are in engagement, as well as a shaft attached to the small adjusting gear (23) (24) which extends outward and rotates the shaft and the small digit connected to it Gear (23) allows. 5. Adjustment device according to claim 3, characterized in that guide pins (15) extend into the inner lock support ring (6), c ken that prevent the same from rotating when the adjusting ring (18) by means of the small adjusting gear (23) is rotated.