EP1055755A2 - Adjusting device for cam parts of flat bed knitting machines - Google Patents

Abstract

The cams on the carriage of a flat bed knitting machine are adjusted by two stepping motors driving two pinions (93,95). One pinion (93) engages two racks (100,200) that move in opposite directions to adjust two cams for the needle sinkers. The other pi (95) moves a cam plate (300) with the other cam tracks (320,340,350,360).

Description

The invention relates to an adjusting device for lock parts of flat knitting machines, especially for the take-off and Push lock parts of a locking system of the machine slide.

Due to the reciprocating movement of the machine slide have the lock systems of the machine slide largely to influence the needle movements symmetrical structure. With modern high-performance flat knitting machines, which are mainly equipped with pressure locks can be determined for each individual needle whether a Stitch or a catch is formed whether it passes a stitch or takes over whether she carries out a split stitch or whether she does not participate in the knitting process at all. Besides, can the stitch size created by the individual needles, can be specified separately for each individual needle. This is it required different lock parts in certain positions to move and hold in this. Because the castle parts cooperate is also a coordinated adjustment of the individual lock parts necessary.

It is known to have one for each of the movable lock parts own movement device, for example a stepper motor or a switching magnet. However, this requires a high control effort and a large installation space that in high-performance flat knitting machines with multiple lock systems is often absent.

DE 43 37 775 A1 describes an adjustment device for Lock parts described, which are a common adjustment multiple lock parts allowed, but not sufficient, the lock parts of knitted locks with extended knitting functions head for.

The present invention has for its object a Adjustment device for lock parts of flat knitting machines to create that with the smallest possible installation space and small control engineering effort is able to all lock parts of locks with advanced knitting functions.

The task is started with an adjustment device resolved type, which is characterized by two Stepper motors, wherein an output pinion of the first stepper motor simultaneously and in opposite directions on two in the direction of the sledge adjustable control slide acts on the control surfaces acted upon by the first parts of the lock, and being a Output pinion of the second stepper motor to an in Step direction adjustable cam slide acts with Control curves for at least second and third lock parts is provided. With just two stepper motors, at least first, second and third lock parts, for example the trigger lock parts, the pressure lock parts and Adjustment elements for interacting with the trigger lock parts Adjustment elements can be coordinated. The Both stepper motors need compared to the single drive all lock parts only a small installation space and are comparatively easy to control.

The output pinion of the two stepper motors can preferably form-fitting directly on the control and cam spool act. For this purpose, the control and cam slides can preferably be provided with toothed racks.

The two control slides can be used for low-friction adjustment The control surfaces of the first parts of the castle are connected via roller rollers act upon. Likewise, the second and third Lock parts are provided with backdrop rollers, which by the Control curves of the cam spool are feasible. To make it possible of pivoting movements of the lock parts or of Linear movements perpendicular to the direction of slide travel can the control cam of the cam spool at least partially curve sections that deviate from the direction of the slide exhibit.

A preferred embodiment is described below with reference to the drawings an adjustment device according to the invention and their adjustment of lock parts described in more detail.

Fig. 1

eine schematische Darstellung einer Schlossplatte mit zu bewegenden Schlossteilen;

Fig. 2

eine perspektivische Darstellung einer erfindungsgemäßen Verstellvorrichtung;

Fig. 3

eine Ansicht von unten in Richtung des Pfeils X auf die Verstellvorrichtung aus Fig. 2;

Fig. 4

eine der Fig. 3 entsprechende Ansicht der Verstellvorrichtung in einer zweiten Verstellposition;

Fig. 5

eine der Fig. 3 entsprechende Ansicht der Verstellvorrichtung in einer dritten Verstellposition.

Show it:

Fig. 1

is a schematic representation of a lock plate with lock parts to be moved;

Fig. 2

a perspective view of an adjustment device according to the invention;

Fig. 3

a view from below in the direction of arrow X on the adjusting device of FIG. 2;

Fig. 4

a view corresponding to Figure 3 of the adjustment device in a second adjustment position.

Fig. 5

a view corresponding to FIG. 3 of the adjustment device in a third adjustment position.

1 shows a lock plate 80 with two needle countersinks 1 and 3, which are shown in their inactive position. In this position will not be the needle countersink 1 and 3 shown spring pressed. Leave the needle countersinks 1 and 3 in the direction of the double arrows at an angle to the direction of the slide, indicated by arrow 8. Furthermore, Kulierelemente 2 and 4 are shown, the order the points 81 and 82 are pivotally mounted. The Kulierelemente 2 and 4 form together with the needle countersinks 1 and 3 the trigger lock parts of lock plate 80. They are also in its basic position, d. H. in the pivoted inwards Position, shown. For pivoting the wedge elements 2 and 4, lock parts 22 and 42 are provided as adjusting elements. These elements 22 and 42 are in the vertical direction movable, which is indicated by double arrows. The transfer this linear movement of the lock parts 22 and 42 takes place via slide rollers 21 and 41, which are connected to the slide elements 2 and 4 are arranged and in control curves on the lock parts 22 and 42 are performed.

The lock parts 22 and 42 also have rollers 20 and 40, with the help of which they are represented by those shown in FIGS Adjustment device are adjustable. Take the basic position the Kulierelemente 2 and 4 also by not shown Feathers.

There are also two pusher bars 5 on the lock plate 80 and 6 arranged. The pusher bar 5 is between the working position 5 and a non-employment position 5 'and the Pusher bar 6 between the working position 6, a first Out of work position 6 'and a second out of work position 6 '' adjustable. On the pusher bars or on the Connecting parts between the pusher bars 5 and 6 are Rollers 50 and 60 arranged via an adjustment of the Pusher bars 5 and 6 is possible.

By appropriate adjustment of the countersink 1, 3, the Kulierelemente 2, 4 and pusher bars 5, 6 and one The needle selection device (not shown) can be realize various possible knitting techniques.

For knitting a slim stitch like the right-right knitted fabric are the needle counterbore 1 and the wedge element 2 in the basic position shown in Fig. 1. The needle sinker 3 will be in the working position according to the desired mesh size pushed outwards. The Kulierelement 4 remains in its basic position. The pusher bar 5 remains in the working position, while the pusher bar 6 in its idle position 6 'is adjusted.

Should produce a rounded stitch like the smooth knitted fabric the needle countersinks 1 and 2 remain in the basic position, the needle counterbore 3 is correspondingly in the working position the desired mesh size is moved outward and the Kulierelement 4 in working position, d. H. to its extreme position, pivoted. The pusher bar 5 is again in the working position and the pusher bar 6 in the idle position 6 '. By pivoting the Kulierelements 4 arises a wider wreath that gives the more rounded look the stitch causes.

The needle countersinks are again used to produce a tuck handle 1 and the Kulierelement 2 in the basic position, the needle countersink 3 in the working position according to the desired tuck size and the Kulierelement 4 in the basic position. now are however, both pusher bars 5 and 6 in their working positions.

If a stitch is to be handed over or taken over, the Needle countersink 1 brought into its lowest working position. The Kulierelement 2 and the countersink 3 and the Kulierelement 4 are held in the basic position. The pusher bar 5 is moved to the working position 5 'and the pusher bar 6 in idle position 6 ''.

The needle counterbore 1 in move the lowest working position. The Kulierelement 2 remains in the basic position. The needle counterbore 3 is in the working position according to the desired size of the split stitch stitch brought. The Kulierelement 4 remains in the basic position. The pusher bar 5 is brought into the working position 5 ' and the pusher bar 6 is deactivated (6 '').

When the carriage moves in the opposite direction of the arrow 8 interchange the needle counterbores 1 and 3 and the wedge elements 2 and 4 each have their roles. Otherwise the settings remain to create the different embroidery techniques same as described above.

2 to 5 now show the adjusting device 90 with of the individual castle parts 1, 3, 2, 4 and 5 and 6 in the positions required to generate the various Knitting techniques can be brought. 2 has the Adjustment device 90 two stepper motors 92 and 94 on. The motors 92 and 94 are arranged on a flat housing 91, its bottom, marked with the arrow X. is, with two sliders 100 and 200 and a cam slider 300 is provided.

3 shows the underside of the flat housing 91 in an adjustment position, that to a non-employment of all Lock parts leads. The upper stepper motor 92 has an output pinion 93 and the lower stepper motor an output pinion 95 on. The output pinion 93 is form-fitting with toothed strips connected to the sliders 100 and 200 and moved thereby the two sliders 100 and 200 in opposite directions. In the A roller 101 is arranged in the middle of the slide 100 and in a roller 201 in the middle of the slide 200. With the roller 101 the surfaces 10 and 30 of the needle countersink 1 and 3 and with the roller 201, the surfaces 11 and 31 of the needle counterbores 1 and 3 acted upon (Fig. 1). The stepper motor 92 thus serves and the sliders 100 and 200 for adjusting the needle counterbores 1 and 3 as trigger lock parts.

The pinion 95 of the motor 94 forms a positive connection a rack of the cam slide 300, in the four cam tracks 320, 340, 350 and 360 are incorporated. In the cam track 320 engages the roller 20 of the lock part 22 for adjustment of the Kulierelements 2 and in the curved path 340 die Roller 40 of the lock part 42 for adjusting the wedge element 4 a. The roller 50 engages in the cam track 350 Pusher bar 5 on. The role 60 of the pusher bar 6 is in the curved path 360 out. The cam tracks 320, 340, 350 and 360 all point from the horizontal and thus the direction of the slide deviating curve sections, whereby the Movement of the lock parts 1, 3, 22, 42, 5 and 6 from Fig. 1 in the arrow directions shown there is possible.

The representation of the adjusting device corresponding to FIG. 3 90 in Fig. 4 shows the setting for knitting one slim stitch. The stepper motor 92 and with it the pinion 93 rotates until the slide 100 is one Has reached position in which the roller 101 over the surface 30 the needle counterbore 3 in for the stitch size concerned has brought the required wedge position. The slider 200 moves simultaneously in the same distance in opposite direction. The roller 201 is thereby acted upon the surface 11 of the needle counterbore 1 does not. The needle counterbore 1 remains in a basic position. The stepper motor 94 moves over the pinion 95 the cam slide 300 so far that the Rollers 40 and 50 are in the basic position, but the roller 60 is moved into a lower position by the cam track 360. This position corresponds to the idle position 6 'of Pusher bar 6.

In Fig. 5 is the setting for generating a split stitch stitch shown. The stepper motor 92 moves the sliders 100 and 200 until the roller 101 over the surface 10 den Needle countersink 1 has moved to its lowest working position and the roller 201 over the surface 31 into the needle counterbore 3 Kulierposition brought that the desired size of the Split stitch stitch corresponds. The stepper motor 94 moves over the pinion 95 the cam slider 300 so far that the Rollers 20 and 40 are in the basic position. The roll turns 50 moved to a lower position by the cam track 350 corresponds to the working position 5 'of the pusher bar 5. At the same time the roller 60 through the cam track 360 in its lowest position moves what the idle position 6 '' corresponds to the pusher bar 6. With only two stepper motors 92 and 94 is the adjustment of all parts of the lock 1, 3, 2, 4 and 5 and 6 in the smallest installation space and with low control engineering effort possible.

Claims (7)

Adjustment device for lock parts of flat knitting machines, especially for the trigger and pressure lock parts of a lock system of the machine slide by two stepper motors (92, 94), one Output pinion (93) of the first stepping motor (92) at the same time and in opposite directions on two in the direction of the sledge (8) acting control spool (100, 200), the control surfaces (10, 30, 11, 31) of first lock parts Apply (1, 3), and being an output gear (95) of the second stepper motor (94) to an in Slide direction (8) adjustable cam slide (300) acts with control cams (320, 340, 350, 360) at least for second and third lock parts (22, 42, 5, 6) is provided. Adjusting device according to claim 1, characterized in that the output pinion (93, 95) of the two stepper motors (92, 94) form-fitting directly on the tax and Act on the cam slide (100, 200, 300). Adjusting device according to claim 2, characterized in that the control and cam spool (100, 200, 300) are provided with toothed racks. Adjusting device according to one of claims 1 to 3, characterized in that the two control spools (100, 200) via link rollers (101, 201) the control surfaces (10, 30, 11, 31) of the first lock parts (1, 3). Adjusting device according to one of claims 1 to 4, characterized in that the second and third Lock parts (22, 42, 5, 6) with slide rollers (20, 40, 50, 60) provided by the control cams (320, 340, 350, 360) of the cam slide (300) can be guided. Adjusting device according to one of claims 1 to 5, characterized in that the control curves (320, 340, 350, 360) of the cam slide (300) at least partially deviating from the direction of slide (8) Have curve sections. Adjusting device according to one of claims 1 to 6, characterized characterized in that the first parts of the lock (1, 3) Trigger lock parts, the second lock parts (22, 42) adjusting elements for those interacting with the trigger lock parts (1, 3) Kulierelemente (2, 4) and the third Lock parts (5, 6) are pressure lock parts.

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