EP0302209B1 - Galloon crochetting machine - Google Patents

Description

The invention relates to a crochet galloon machine according to the preamble of claim 1.

A crochet gallon machine of the type mentioned is known from US Pat. No. 4,266,410. It is disadvantageous here that the knitting needles and the slides are each cast into the bars, so that in the event of a defect in the sliders or knitting needles or in the event of a pattern change, the entire bars must be replaced. The production of new bars is expensive and time consuming.

The object of the invention is to improve a crochet gallon machine of the type mentioned.

The object is achieved by the characterizing features of claim 1. Due to the fact that the knitting needles and the sliders are each held on the bars via dovetail-shaped approaches and corresponding clamping devices, the knitting needles or sliders can be exchanged quickly and easily in the event of a defect or retrofitting. The downtime of the crochet galloon machine is reduced to a minimum. The spare parts inventory is significantly simplified and is limited to sliders and knitting needles, which also results in a significant cost saving.

Advantageous embodiments of the crochet galloon machine are described in claims 2 to 9.

The knitting needles and the slider can be attached according to claim 2. The accessibility of the attachment of the knitting needles and the slider is improved in an embodiment according to claim 3.

It is expedient to move the knitting needle bar and the slide bar in a straight line back and forth. This enables a particularly simple holder according to claim 5 and a very simple drive according to claim 6.

It is particularly advantageous if the warp thread guides are connected to the knitting needle bar in terms of drive. This drive can preferably be designed according to claim 8.

The knitting needles can be guided in guide grooves in the knock-off rail in a known manner. However, an embodiment according to claim 9 is more advantageous.

Figur 1

eine Häkelgalonmaschine im Ausschnitt und im Schnitt I-IA der Figur 3;

Figur 2:

die Anordnung und den Antrieb des Schiebers der Häkelgalonmaschine nach Figur 1 im Schnitt I-IB der Figur 3;

Figur 3

die Häkelgalonmaschine der Figur 1 im Schnitt III-III der Figur 1, im Ausschnitt; und

Figuren 4 bis 7:

den Schiebernadelbereich der Häkelgalonmaschine der Figur 1 im Ausschnitt und in grösserem Massstab und in verschiedenen Arbeitspositionen.

An exemplary embodiment of the crochet galloon machine according to the invention is described in more detail below with reference to the drawings, in which:

Figure 1

a crochet gallon machine in section and in section I-IA of Figure 3;

Figure 2:

the arrangement and the drive of the slide of the crochet galloon machine according to Figure 1 in section I-IB of Figure 3;

Figure 3

the crochet gallon machine of Figure 1 in section III-III of Figure 1, in detail; and

Figures 4 to 7:

the slide needle area of the crochet galloon machine of Figure 1 in the cutout and on a larger scale and in different working positions.

Figures 1 to 7 show the essential parts of the invention of the otherwise known crochet galloon machine for producing a warp knitted fabric. This crochet gallon machine has slide needles 2, the knitting needles 4 of which are arranged on a lower knitting needle bar 6 and the slider 8 of which is arranged on a slider bar 10 lying above it. The slides 8 are guided in guide grooves 12 of the knitting needles 4. To attach the knitting needles 4 and the slider 8, these have on their rear shafts 14, 16 dovetail-like lugs 18 with which they are clamped in a clamping device 20, 22 of the knitting needle bar 6 and the slider bar 10. Tensioning screws 24 serve to tighten the clamping devices 20, 22. These tensioning screws 24 are accessible either from the rear or from the top or from the bottom of the knitting needle bar 6 and the slide bar 10. The knitting needle bar 6 and the slide bar 10 are each fastened to plungers 26a, 26b, which on the one hand serve to carry and on the other hand to drive the bars back and forth. The plungers 26a, 26b are in a gear housing 28 each slidably guided on two plain bearings 30a, 30b. Two driver rollers 32a, 34a, 32b, 34b are arranged on the tappets, which interact with corresponding control cams 36, 38, which are arranged on a drive shaft 40 in the transmission housing 28.

Both for the knitting needle bar 6 and for the slider bar 10, there are therefore such plungers 26, the corresponding control cams on the drive shaft 40 being designed for the corresponding movement requirements of the knitting needles 4 and the slider 8, which is not shown in detail, however.

The knitting needles 4 of the pusher needles 2 are supported on a knock-off rail 42, which is straight, i. H. has no guide grooves for lateral guidance of the knitting needles 5. A set of warp thread guides 44, which are fastened to a pivotable carrier 46, is assigned to the slide needles 2. An arm 48 is arranged on the carrier 46 and is connected to a toggle lever 52 via a coupling member 50. The toggle lever 52, which is pivotally mounted on an axis 54, is connected via a further coupling rod 56 to a shoulder 58 of the knitting needle bar 6 in terms of drive. The warp thread guides 44 are thus moved up and down in the vertical direction synchronously with the knitting needle bar 6.

Various weft thread guides 60 are arranged above the knock-off rail 42 in a known manner and are designed, for example, as tube thread guides. The warp-knitted fabric 62 is drawn off downward in a gap formed between the knock-off rail 42 and a guide bar 64 by means of a pull-off device 66.

Reference symbol list

2nd

Slide needle

4th

Knitting needle

6

Needle bar

8th

Slider

10th

Slide bar

12

Guide groove

14

Shaft of 4

16

Shaft of 8

18th

approach

20th

Clamping device from 6

22

Clamping device from 10

24th

Clamping screw

26a

Pestle for 6

26b

Pestle for 10

28

Gear housing

30a

Plain bearing for 26a

30b

Slide bearing for 26b

32a

Driving roller for 6

32b

Driver roll for 10

34a

Driving roller for 6

34b

Driver roll for 10

36

Control curve for 6

38

Control curve for 10

40

drive shaft

42

Tee rail

44

Warp thread guide

46

carrier

48

poor

50

Coupling link

52

Toggle

54

axis

56

Coupling rod

58

Approach of 6

60

Thread guide

62

Warp knit

64

Guide bar

66

Trigger device

Claims (9)

1. Galloon crocheting machine with work needles (4), guided in a backwards and forwards motion transversely to a knock-over rail (42), and associated sliders (8), associated with which are at least one tube weft thread guide (60), movable transversely to the work needles (4), and also warp thread guides (44), the work needles (4) and the sliders (8) being arranged respectively at the facing sides of the work needle bar (6) and of the compound needle bar (10) lying above that, characterized in that the work needles (4) and the sliders (8) have dovetailed extensions (18) that are held in corresponding clamping devices (20, 22) of the bars (6, 10).
2. Galloon crocheting machine according to claim 1, characterized in that the work needles (4) and the sliders (8) are arranged to be secured from the sides of the bars (6, 10) facing away from one another.
3. Galloon crocheting machine according to claim 1, characterized in that the work needles (4) and the sliders (8) are arranged to be secured from the sides of the bars (6, 10) remote from the working side.
4. Galloon crocheting machine according to claim 1, characterized in that the work needle bar (6) and the slider bar (10) are each movable in a straight line in a backwards and forwards motion.
5. Galloon crocheting machine according to claim 1, characterized in that the work needle bar (6) and the slider bar (10) are each arranged on slide rods (26a, 26b) which are guided in a backwards and forwards motion in a gear box (28).
6. Galloon crocheting machine according to claim 5, characterized in that driven control cams (36, 38) which co-operate with follower rollers (32a, 34a, 32a, 34b) on the slide rods (26a, 26b) are arranged in the gear box (28).
7. Galloon crocheting machine according to claim 1, characterized in that warp thread guides (44) associated with the compound needles (2) are connected to the work needle bar (6) so as to be driven by it..
8. Galloon crocheting machine according to claim 7, characterized in that warp thread guides (44) are secured to a carrier (46) on which is arranged an arm (48) that is connected by way of a coupling member (50) to an articulated lever (52), which lever is coupled by way of a further coupling rod (56) to the work needle bar (6).
9. Galloon crocheting machine according to claim 1, characterized in that the work needles (4) lie without lateral guidance on a knock-over rail (42) of linear construction.

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