DE202021105860U1 - Warp knitting machine - Google Patents

Abstract

Warp knitting machine (1) with a drive system for knitting elements of the warp knitting machine (1), the drive system having a lever (2) to which at least one bar (3) of the warp knitting machine (1) provided with knitting elements is fastened, the lever (2) rotatably mounted on a support shaft (4) of the warp knitting machine (1), the warp knitting machine (1) having a return mechanism which acts on the lever (2), and the warp knitting machine (1) having a cam (5) for driving the lever (2) has.

Description

The invention relates to a warp knitting machine with a drive system for knitting elements of the warp knitting machine. A warp knitting machine is a loop-forming textile machine that is suitable for the production of flat textile materials. In a warp knitting machine, the knitting elements are primarily attached to so-called bars, so that a large number of knitting elements can be moved at the same time. This causes the comparatively high production speed of warp knitting machines.

According to the state of the art in warp knitting machines, the knitting elements are driven by a large number of components in order to reproduce the knitting movement of the knitting tools. Multi-link coupling mechanisms are used that convert a rotary movement of a main shaft of the warp knitting machine into a bar movement. The main shaft can be connected to a coupling mechanism, for example via an eccentric or a crank. The invention is therefore based on the object of providing a warp knitting machine with a drive mechanism in which the number of components required is significantly reduced.

The object is achieved by providing a warp knitting machine with a drive system for knitting elements of the warp knitting machine, the drive system having a lever to which at least one bar of the warp knitting machine provided with knitting elements is attached, the lever being rotatably mounted on a support shaft of the warp knitting machine, the Warp knitting machine has a return mechanism which acts on the lever, and wherein the warp knitting machine has a cam for driving the lever. In this drive mechanism, the lever for moving the billet is thus moved by means of a cam and then returned to an initial position by a return mechanism.

According to the invention, it is possible for the return mechanism to comprise at least one spring. The spring is preferably connected to the support shaft and the lever. The spring can, however, attack another element of the warp knitting machine instead of the support shaft. It is advantageous if the at least one spring is a torsion spring or a leg spring. In principle, however, the use of other spring elements is also conceivable. Alternatively, for example, a spiral spring or plate spring can be used at a suitable point. It is advantageous to use a degressive spring characteristic or, alternatively, a soft spring with preload in order to keep a counterforce generated by the spring as constant as possible over the stroke.

It is preferred if the warp knitting machine has a camshaft which forms the cam or to which the cam is attached, the camshaft having further cams for driving further levers of the warp knitting machine. In this way, a plurality of levers of the warp knitting machine can be driven, each of the levers also carrying a bar or knitting tools. The camshaft can consist of several shaft sections across the width of the machine, which are later coupled to one another. The bearing for the camshaft can be integrated in the center walls of the warp knitting machine.

The levers can be used to drive bars of different types, for example guide bars, but also needle bars, slide bars, sinker bars and other bars. The cams are each designed in such a way that the levers perform the movement necessary for the knitting process.

The lever preferably has a roller. The roller is preferably rotatably mounted and arranged in such a way that it is detected by the cam when it rotates. The cam thus transmits driving forces to the lever via the roller. Bearings of the rollers in the lever are loaded all the way round, which means good material utilization and even wear. If necessary, an adjustment option or a fine adjustment for the roller can be integrated into the lever. Depending on the installation space and arrangement, the lever can alternatively be driven via push rods, that is, the lever is only indirectly driven by the cam.

The camshaft, the roller of the lever and their bearings are preferably lubricated with oil. For this purpose, a corresponding area around the camshaft is preferably locally sealed by a housing. According to the invention, the seal can be carried out in sections, i.e. by means of several housings, so that a modular structure is created.

There is preferably only a small amount of oil in the housing, which saves resources. The cams are preferably lubricated by splash lubrication, the cams being immersed in oil in a lower area of the housing.

An advantageous embodiment of the invention is in 1 shown schematically. It becomes a warp knitting machine 1 shown with a drive system for knitting elements of the warp knitting machine 1 , the drive system being a lever 2 has, on which at least one bar provided with active elements 3 the warp knitting machine 1 is attached, the lever 2 on a support shaft 4th the warp knitting machine 1 is rotatably mounted, the warp knitting machine 1 has a reset mechanism that acts on the lever 2 acts, and wherein the warp knitting machine 3 a cam 5 to drive the lever 2 having. The cam 5 sits on a camshaft 6th the warp knitting machine 1 . The camshaft 6th has a large number of other cams, not shown here 5 on what other levers, not shown here, of the warp knitting machine 1 drive. The lever shown here 2 carries a bar 3 the warp knitting machine 1 , which is a guide bar that has perforated needles. The return mechanism is by a spring 7th formed on the support shaft 4th and the lever 2 is attached. The spring 7th thus caused after deflection of the lever 2 through the cam 5 a return movement. The camshaft 6th is in a housing 8th arranged. The case 8th is with a sufficient amount of oil 9 filled so that a splash lubrication of the cam 5 can be done. The lever 2 also has a role 10 on that for contacting the cam 5 is provided.

List of reference symbols

1.

Warp knitting machine

2.

lever

3.

Bar

4th

Support shaft

5.

cam

6th

camshaft

7th

feather

8th.

casing

9.

oil

10.

role

Claims (6)

Warp knitting machine (1) with a drive system for knitting elements of the warp knitting machine (1), the drive system having a lever (2) to which at least one bar (3) of the warp knitting machine (1) provided with knitting elements is attached, the lever (2) is rotatably mounted on a support shaft (4) of the warp knitting machine (1), the warp knitting machine (1) having a reset mechanism which acts on the lever (2), and the warp knitting machine (1) has a cam (5) for driving the lever (2). Warp knitting machine (1) according to Claim 1 , characterized in that the return mechanism comprises at least one spring (7). Warp knitting machine (1) according to Claim 2 , characterized in that the spring (7) is connected to the support shaft (4) and the lever (2). Warp knitting machine (1) according to Claim 2 or 3 , characterized in that the at least one spring (7) is a torsion spring or a leg spring. Warp knitting machine (1) according to one of the preceding claims, characterized in that the warp knitting machine (1) has a camshaft (6) which forms the cam (5) or to which the cam (5) is attached, the camshaft (6) has further cams (5) for driving further levers (2) of the warp knitting machine (1). Warp knitting machine (1) according to one of the preceding claims, characterized in that the lever (2) has a roller (10).

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