DE1241030B - Warp knitting machine with two rows of perforated needles that form a left-left warp knitted fabric by mutual stitching - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

D04b

German class: 25 a - 15/01

Number:
File number:
Registration date:
Display day:

P 27870 VII a / 25 a
September 16, 1961
May 24, 1967

The invention relates to a warp knitting machine with two opposite one another displaceable, a left-left warp knitting forming needle rows, their curved Perforating needles have a U-shaped profiled shaft that is open on the outside of the curvature, which serves as a guide for the thread running to the needle hole at the end of the needle.

In a known machine of this type, the needles are profiled in a U-shape over their entire length. According to the width of the profile, the width of the alleys between the needles through which the Needles of the other row of needles are moved through. This means the needle division and There are limits to the fineness of the needles, and only relatively coarse and slightly dense knitted fabrics can be used getting produced.

In other known warp knitting machines with rows of perforated needles, the rows are also curved Needles consistently flat. Transverse needle holes are provided at the end of the needle. In these machines, however, the thread section on the shaft running towards the needle hole becomes the Needles not guided. There is a risk of being caught by a needle in the other row of needles. which inevitably leads to thread breakage. To curb this danger are also proportionate large needle distances are required at the expense of the fineness of the knitted fabric, or additional ones are required Guide needle bars are provided, which require a complicated structure of the machines.

The object of the invention is to provide a machine without the mentioned disadvantages of the known ones mentioned. To create machines. Based on the known machine mentioned in the first place, this The object is achieved according to the invention in that the in a manner known per se with a transversely directed Needle ends provided with a needle hole from an extended side wall of the U-shaped profiled Needle shafts exist that these needle ends are on the needles of the two rows of needles, in the longitudinal direction of the machine seen, are located on opposite sides and that the length of the needle shafts is such that when working only the needle ends through the alleys between the needle shafts of the respective row of needles opposite be moved through. Since the thread sections running towards the needle hole in the U-shaped profiled needle shafts are guided, they cannot be caught by the needles of the other row of needles will. On the other hand, the distance between two needles in the same row of needles can be small Warp knitting machine with two left-left warp knitted fabrics by mutual stitching forming rows of needles

Applicant:

Walter Palange, Tilburg (Netherlands)

Representative:

Dipl.-Ing. E. Jourdan and Dipl.-Ing. W. Beyer,

Patent attorneys,

Frankfurt / M., Freiherr-vom-Stein-Str. 18th

Named as inventor:

Walter Palange, Tilburg (Netherlands)

Claimed priority:

Netherlands of September 16, 1960 (255 950)

reduced more than the thickness of a side wall of the U-shaped profiled needle shaft whereby small needle pitches and corresponding needle fineness are made possible.

An exemplary embodiment of the invention is explained in more detail below with reference to the drawing. In this shows

Figure 1 is a side view of a needle of the machine according to the invention,

Fig. 2 is a plan view of a plurality of each other cooperating needles,

F i g. 3 shows a cross section through the machine according to the invention in the area of the two rows of needles load-bearing needle bars, in which the left needle bar is drawn in different positions is and

FIG. 4 shows a plan view of FIG. 5 with in the middle position located left needle bar.

According to the F i g. 1 and 2, the needles 11 of the machine according to the invention consist of a curved piece of sheet metal with a U-shaped profile in the area of the needle shaft 6. In contrast, the end 7 of the needle consists only of an extended side wall of the U-shaped profiled needle shaft 6. The needle end is consequently flat and thin. It has a thickness equal to the thickness of the sheet metal used to manufacture the needle,

709 587/80

Claims (1)

and contains the transversely directed needle hole 8. The thread 9 is guided in the U-shaped profiled needle shaft, in which it enters under the thread guide rod 2. The thread runs along the end of the needle? forming extended side wall of the needle shaft 6 along and finally leaves the Needle through the needle hole 8. As FIG. 3 shows, the warp knitting machine according to the invention has a movable needle bar 12 on which a first row of perforated needles 11 is mounted. A second row of perforated needles sits on a second movable needle bar 13. The needle bars with the rows of needles can be moved in the direction of arrows α and b (FIG. 3) and also in the axial direction. In the drawn upper position of the needle bar 12, the thread 9 runs back to the needle shaft after exiting the needle hole 8. There it forms a stitch that belongs to the knitted fabric hanging on the row of needles. This applies to all threads that pass through the needle holes of the needles of the bar 12. In the following phase of the knitting process, the ends of the needles of the bar 13 pass between the thread sections running from the needle holes to the stitches hanging on the needle shafts. The rows of needles are then offset from one another in their longitudinal direction. If the needles of the bar 12 are now lowered further, the needles of the bar 13 reach through between the thread sections running to the stitches and the shafts 6 of the bar 12. This is the case when the bar 12 is in the position shown in FIG. 1 is the lowest position shown. If the needles 11 of the needle bar 13 are then separated from the needles 11 of the needle bar 12 in FIG. 1 turned away to the right, then the threads of the needle line of the left needle row form stitches on the shafts of the needles 11 of the right needle row, on which the knitted fabric is now hanging. The knitting process is continued in the manner already described. The needles 11 of the two opposite rows of needles are, as in FIGS. 2 and 4 show, designed in such a way that their flat ends 7, viewed in the longitudinal direction of the machine, are on opposite sides of the U-shaped profiled needle shafts. Furthermore, the Dimension the length of the needle shafts of each row of needles so that only the needle ends 7 when knitting through the lanes between the shafts 6 of adjacent needles of the opposite row of needles be moved through. As a result, the spacer blocks 14 need only between the needles to be slightly stronger than the flat end 7 of a needle (Fig. 2, 4) and can be the pitch of the needles Both rows of needles should be chosen accordingly small. Claim: Warp knitting machine with two opposing, mutually displaceable, through mutual stitching of a left-left warp knitting forming needle rows, their Curved perforated needles have a U-shaped profile that is open on the outside of the curvature Have a shaft that serves as a guide for the thread running to the needle hole at the end of the needle, characterized in that in a manner known per se with a transversely directed Needle hole (8) provided needle ends (7) from an extended side wall of the U-shape profiled needle shafts (6) exist that these needle ends (7) on the needles of the two Rows of needles, seen in the machine longitudinal direction, are located on opposite sides and that the length of the needle shafts (6) is dimensioned so that only the needle ends when knitting (7) through the alleys between the needle shafts (6) of the opposite row of needles be moved through. Considered publications:
German patent specifications No. 490 603, 651926,
506,737 242;
Italian patent specification No. 571 889. 1 sheet of drawings 709 587/80 5.67 © Bimdesdruckerei Berlin