DE1236118B - Warp knitting machine, in particular Raschel machine, for the production of loop pile fabric - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

D04b

German class: 25 a - 15/05

Number: 1236 118

File number: B 54056 VII a / 25 a

Filing date: July 17, 1959

Opened on: March 9, 1967

The invention relates to a warp knitting machine, in particular a Raschel machine, which is used for production of loop pile fabric has catch pins moving up and down in its longitudinal direction. S.

In the known machines of this type, the knitting needles and the catch pins are perpendicular to the middle tangent to the arcuate trajectory of the punch needles. As a result, wrap around the threads placed around the catch pins by the perforated needles, the catch pins relatively high up. the The consequence of this is that the pile loop is not on the latter when it is tied into the fabric is vertical, there is also the risk that the pile loop from the catch pin in the upward direction slips off if the catch pin is not relatively long and the stroke movement of the catch pin is not appropriate is large, and finally the setting of the correct laying of the basic meshes Difficulties, because the mesh-forming threads before considering the proportionately high pile thread sections extending from the perforated needles to the catch pins must be led away.

In another known warp knitting machine for the production of pile fabrics, the catch pins are although placed at an angle, they do not perform any longitudinal movement. They are also available with cutting edges for ... Cut open the pile loops. This machine cannot produce loop pile fabric because the pile loops are not released. The necessary movement of the catch pins, which would have to take place in the longitudinal direction of the same cannot be carried out because it is at an angle the plane of the knitting needles would run and that for that drawn off from the knitting tools The space required for the goods would have to be taken up.

The invention aims to provide a machine without the aforementioned disadvantages of the known machines mentioned be created. This task is based on the known in the first place Machine, solved in that the catch pins and the knitting needles parallel to them at an angle to the middle Tangent of the arcuate trajectory of the needle punch and inclined to the oscillating movement of the needles in connection with the consideration of the catch pins opposite Direction are arranged.

Preferred further refinements of the invention emerge from the subclaims.

Below is an embodiment of the Er warp knitting machine, in particular
Raschel machine, for production
of loop pile fabric

Applicant:

Besmer Carpet Factory Mertens KG,
Hameln, Wilhelm-Mertens-Platz 4

Named as inventor:
Marcel Vitek, Hamelin

Finding described on the basis of the drawing. In this shows

F i g. 1 partly a side view and partly a cross-section of a machine according to the invention and

F i g. 2 shows a cross-section through the active elements of the machine on a larger scale than in FIG. 1.

The machine frame has two side walls 11 and 12. The former is in the lower and the latter in the upper part of FIG. 1 visible. Between the side walls 11 and 12 there are longitudinal struts 14, 14 a and 15 known per se. One or more intermediate walls 16 are arranged on the struts 14 and 14 a, depending on the machine width. Opposite them, further partition walls 17 supported on the floor are provided.

On the carrier 15 there are bearings 23 in which a horizontally lying oscillating shaft 22 is mounted. This oscillating shaft 22 in turn carries flanges 24 which carry the displaceable supports 25 to 28 of guide rails 18 to 21.

The oscillating shaft 22 also carries one or more levers 29, which are connected via connecting rods 30 one or more further levers 31 are articulated. The lever 31 is in turn open an extension of the hub of an eccentric lever 33 jammed so that he of an eccentric 36 and a counter eccentric 37 are moved via an eccentric roller 34 and a counter roller 35 and these Movement can be transmitted to the connecting rod 30. In this way, the rocking motion generated by the guide rails. The eccentrics 36 and 37 are mounted on the driven eccentric shaft 38.

On this eccentric shaft 38 are also the eccentrics, not shown in the figure, for

Claims (2)

Drive of the catch pin bar 51. The drive can be removed similarly to the drive for the oscillating movement of the guide rails, the eccentric rollers communicating the movement of the eccentrics to the lever 47 via the oscillating shaft 32. The S lever 47 is in turn connected via a connecting rod 48 to a support lever 49 for the pilot pin bar 51, which is mounted on a shaft 50. Various eccentrics can be used to drive the catch pin bar 51, specifically for the production of velor eccentrics with a smaller stroke than for the production of loops. Depending on the length of the machine, a different number of eccentric pairs can be arranged with the corresponding transmission elements. A second driven eccentric shaft 53, which serves to drive the knitting needle bar 66, lies parallel to it opposite the driven eccentric shaft 38. On this shaft 53 there are eccentrics 54 and 55 which, via eccentric rollers 56, 57, move an eccentric lever 58 which is fixedly mounted on a shaft 59. This movement is communicated to the needle bar support lever 62 via a rocking lever 60 clamped on the shaft 59 and via a movably mounted connecting rod 61. The bar support lever 62 is fixedly mounted on a shaft 63. This shaft 63 is carried by an arm 64 of the bearing 23. In addition, it is supported by a support 65 anchored on the intermediate wall 17. The number of eccentric pairs provided with the corresponding transmission elements depends on the length of the machine. On the needle bar 66, the needle leads 67 are fastened with the corresponding needles in a known manner. The comb sinkers can also be driven by eccentrics seated on the shaft 53 via levers 72 and connecting rods 73. The sinker bar 75 carries the sinker lead76 with the sinkers in a manner known per se (FIG. 2). As can be seen from the figures, both the needles 67 and the catch pins 52 are inclined at an acute angle α with respect to the central tangent 85 on the arcuate path of movement 86 of the perforated needles. From Fig. 2 of the drawing it can also be seen that when the guide rails 18 to swing back, the threads placed around the catch pins 52 as well as the threads placed around the needles 67 tend to slide downwards. Corresponding to the inclined position of the catch pins and the knitting needles in relation to the path of movement of the perforated needles, the milling sheet 87 located between the needles and the catch pins is also arranged at an incline. Along the milling sheet 87, the finished product 88 is drawn off from the loop-forming elements by a driven draw-off roller 89. Patent claims: 1. Warp knitting machine, in particular Raschel machine, which is used for the production of loop pile fabric has catch pins moving up and down in their longitudinal direction, thereby characterized in that the catch pins (52) and the knitting needles (67) parallel to them are inclined to the middle tangent (85) of the arcuate trajectory (86) of the perforated needles and inclined into the oscillating movement of the needles following the consideration of the catch pins (52) are arranged in opposite directions. 2. Machine according to claim 1, characterized in that the catch pins (52) with the middle tangent (85) of the movement path (86) of the perforated needles an acute angle of about Include 40 to 80 °. 3. Machine according to claim 1 or 2, characterized in that the plane of the milling sheet (27) is parallel to the plane of the catch pins (52). Considered publications:
German Patent No. 627392:
Swiss Patent No. 92 951;
U.S. Patent No. 2,892,331;
Weigkricht, "Technologie der Kettenwirerei", Vienna, Heidelberg, 1949, p. 118. 1 sheet of drawings 709 518/2 + 2.S7 O Bundwdruekerei Berlin