TWI730122B - Warp-knitting machine - Google Patents

Abstract

A warp-knitting machine (1) having a machine bed (2) and a bar pack (3) which has a plurality of guide bars (4) and which by way of a drive installation (13) is movable in a swing direction (8) perpendicular to the longitudinal direction of said bar pack (3) is specified. The intention is to achieve a high operating speed by way of a simple construction. To this end, it is provided that the bar pack (3) is mounted in an articulated manner at two mounting points (6, 7) which in the swing direction (8) have a mutual spacing and which are movable relative to one another.

Description

Warp knitting machine

The present invention relates to a warp knitting machine having a machine tool and a rod group, which has a plurality of guide rods, and can be moved in a swing direction perpendicular to the longitudinal direction of the rod group by a driving device.

Guide needles or other yarn guides are arranged on the guide rods, and when the warp knitting machine is operated, they interact with knitting needles (also called operating needles) to form loops of the warp knitted fabric. During the formation of the loops, the guide rods usually move along the longitudinal direction of the guide rods in a reciprocating manner. One such movement is also called "offset movement". Between the offset movements, the yarn guides must be guided through the grooves of the knitting needles. In this regard, the guide rods will perform a rocking motion.

In order to enable this rocking motion to occur, the rod group is usually suspended by a suspension shaft. The suspension shaft can be installed in the wall, which is erected on the machine tool. When the rod set has a relatively large mass, for example, when a relatively large number of guide rods are required, a beam is often used to install the suspension shaft.

An example of such a warp knitting machine is shown in the EP 1837428 B1 patent. Compared with the rod group, which operates by a tappet, unlike the past, the swing motion is controlled by two pins, which are arranged concentrically in the shafts to make the shafts rotate. Therefore, it is possible to make the rod set around the The suspension shaft is pulled and pushed so that the forces are considered to be more uniform.

With this kind of warp knitting machine, there is a problem in the risk of undesirable vibrations being caused at higher operating speeds. In extreme cases, such vibrations can cause collisions between knitting tools. In many instances, this type of vibration can cause a compromised quality of one of the warp knitted fabrics. The vibration can be eliminated by strengthening structural elements, such as the suspension shaft or the beam, with a larger mass. However, this will lead to a complicated structure and high cost.

The invention is based on a simple structure to achieve a high operating speed.

If it is a warp knitting machine of the kind mentioned initially, this objective will be achieved, in which the rod set is installed at two installation points in an articulated manner, which has a mutual interval in the swing direction, and its The lines can move relative to each other.

If it is a warp knitting machine of this kind, a suspension shaft can be eliminated. The rod group is supported on the installation points and will be carried by the installation points. When the mounting points move relative to each other, they will cause a change in the inclination of the rod set. When the mounting points are actuated in a corresponding manner, the guide rods can be guided in the swing direction by a movement in this way, which is similar to the conventional suspension on a suspension shaft. The situation has also been implemented.

When the rod group moves at the installation points, it preferably moves in a translational manner in the swing direction. The translational movement of the rod group is also transmitted to the yarn guides, which are fastened to the guide rods. Therefore, the translational motion and the tilt The oblique movement overlaps the movement in the swing direction. The tilting or pivoting movement of the rod group can then be minimized.

The mounting points are preferably located on the support assembly, and they can pivot relative to a base. These support assemblies will bring the rod set. The mounting points can move relative to each other by pivoting the support assemblies.

Here, it is preferable that the support assemblies are inclined toward each other. A trapezoidal arrangement, in which the base and the rod group are aligned in the neutral position of the rod group, so the result is when viewed in cross-section, for example, they will be parallel to each other.

It is also more advantageous that when the supporting assemblies are inclined, they will be symmetrical to each other. This will simplify control.

The installation points are preferably set lower than a plane in the direction of gravity, and the mass center of the rod group is located in the plane. Better exercise conditions will result from this.

In a preferred design embodiment, it is provided that the instantaneous pole of the support assembly is located at the center of mass of the rod group when in a neutral position of the rod group. The rod groups will swing by the change of the inclination of the support assemblies. The instantaneous pole is repositioned on an approximate track, and the yarn guides can move approximately on another track in any case.

The supporting assemblies are preferably fixed to the machine tool in a hinged manner. The machine tool can be used as the base.

One or each support assembly has a plurality of supports, which are arranged side by side with each other and can be separated in the longitudinal direction. The yarns and knitting areas can then enter through the gap.

The supports are preferably arranged in pairs in the swing direction in sequence. Therefore, the rod group will not be subjected to the bending stress of the supports.

The driving device is better connected to the rod group. The engagement device may be formed by a tappet, for example, which is driven by the main shaft of the warp knitting machine.

Alternatively, the driving device can also be connected to the support assembly. Similarly, a tappet driven by the main shaft of the warp knitting machine can also be used.

1: warp knitting machine

2: machine tool

3: Rod group

4: guide rod

5: Quality Center

6, 7: installation point

8: Swing direction

9, 11: Support assembly

10, 12: live festival

13, 14: Tappet

The present invention will be described later with a preferred design embodiment and drawings. In this drawing: Figure 1 shows a schematic diagram of the height of the elements of a warp knitting machine in the neutral position of a rod group; and Figure 2 shows the elements of Figure 1 and an inclined rod group.

Figure 1 schematically shows some elements of a warp knitting machine 1, wherein the longitudinal direction of the warp knitting machine 1 extends perpendicular to the plane of the figure.

The warp knitting machine 1 has a machine tool 2 and a bar group 3. Most of the guide rods 4 are attached to the rod group. The guide rods 4 will have a yarn feeding guide (not shown in more detail). The yarn guides are arranged sequentially in a manner perpendicular to the plane of the drawing. Therefore, the guide rods 4 and the rod group 3 have a longitudinal system extending perpendicular to the plane of the drawing.

The rod group 3 has a center of mass 5, which is shown as an intersection.

The rod group 3 is installed at the two installation points 6 and 7 in a hinged manner. The two mounting points 6, 7 are in a swing direction shown by a double arrow 8 There is a mutual interval.

The mounting point 6 is arranged on a first supporting assembly 9, which is fixed to the machine tool 2 by a hinge 10. The second mounting point 7 is provided on a second supporting assembly 11, which is fixed to the machine tool 2 by a second hinge 12.

The two supporting assemblies 9, 11 are inclined towards each other. The support assemblies 9, 11 are set to be symmetrical to each other when they are in the neutral position of the rod group 3. That is to say, the support assemblies 9, 11 will surround the machine tool 2 in the opposite direction in each case. The same angle. The machine tool 2, the rod group 3, and the two supporting assemblies 9, 11 form a trapezoid here.

The instantaneous poles of the supporting assemblies 9 and 11 are located at the center of the mass 5 of the rod group 3. This is shown by the dashed lines extending the support assemblies 9,11.

The two mounting points 6, 7 are set lower than a plane in the direction of gravity, and the center of mass 5 of the rod group 3 is located in the plane.

From the comparison of Figs. 1 and 2, it can be seen that the inclination of the rod group 3 can be changed in a simple manner, wherein the inclination of the support assemblies 9, 11 relative to the machine tool 2 can be changed. This change can be triggered by, for example, a driving device, which in this embodiment has a tappet 13 which is connected to the first support assembly 9. When the tappet 13 moves in a direction toward the first support assembly 9, the angle between the first support assembly 9 and the machine tool 2 will increase. Because the second support assembly 11 is coupled to the first support assembly 9 through the rod set 3, the angle between the machine tool 2 and the second support assembly 11 is reduced. At the same time, the translational movement of one of the rod groups 3, in this example, to the left, will be caused by the changes in the angles of the two support assemblies 9, 11. The guide rods 4 will perform a pivoting movement because the rod group 3 is inclined. The average run of the rod group 3 The moving and pivoting movements will overlap each other. When the two support assemblies 9, 11 move in opposite directions, that is, when the angle between the machine tool 2 and the first support assembly 9 decreases, and the angle between the machine tool 2 and the second support assembly 11 When the angle increases, the rod group 3 will move to the right, and the guide rods 4 will be pivoted to the right at the same time with their lower ends.

Another driving possibility is shown as an alternative. A tappet 14 is not connected to a supporting assembly 9, 11, but directly connected to the rod set 3, as shown by an imaginary line. Such a tappet 14 can also be driven by the main shaft of the warp knitting machine 1.

The support assemblies 9 and 11 can be formed by a row of supports, which have a mutual interval in the longitudinal direction of the warp knitting machine 1. Therefore, the machine operator has a free path between the supports to reach the warp yarns and knitting areas.

Since the rod set 3 is no longer mounted on a suspension shaft, there is a greater degree of freedom to guide the yarn. The suspension axis, or even a beam, which is suspended by the suspension axis, will no longer have to be considered.

Some components are critical to vibration, such as the beam, the suspension shaft, the upper side wall of the machine tool, etc., or the linkage group, etc., which can be omitted because a suspension shaft is eliminated. Therefore a higher rotation speed is possible. At the same time, a relatively high rotation speed can be implemented at a lower cost.

This will result in a small structure. Therefore, lighter components can be used, and less force can be caused. This in turn will help towards a high rotation speed.

As mentioned above, it is possible to feed the yarn unimpeded from above of. This will result in a short yarn path and a smooth yarn feed. This will result in good fabric quality in a simple way. This will also cause the smooth introduction of the yarn.

This two-point installation has advantages, especially when the rod set is heavier, such as when it accepts a larger amount of guide rods. The two-point installation is also advantageous when the rocking motion has to traverse a larger distance, such as in the case of a two-stage knitting machine.

1‧‧‧Warp Knitting Machine

2‧‧‧Machine tool

3‧‧‧Pole Group

4‧‧‧Guide rod

5‧‧‧Quality Center

6, 7‧‧‧Installation point

8‧‧‧Swing direction

9,11‧‧‧Support assembly

10、12‧‧‧Live Festival

13,14‧‧‧Tapper

Claims (10)

A warp knitting machine, which has a machine tool and a rod group, the rod group has a plurality of guide rods and can be moved along a swing direction perpendicular to the longitudinal direction of the rod group by a driving device, characterized in that: The rod set is installed on two installation points in a hinged manner. The two installation points have a mutual interval along the swing direction and the two installation points can move relative to each other; the installation points are arranged so as to be relative to a base. The pivoting support assembly of the seat; and in a neutral position of the rod group, the instantaneous poles of the support assemblies are located at the center of mass of the rod group. Such as the warp knitting machine of claim 1, wherein the movement of the rod group at one of the mounting points is to move in the swing direction in a translational manner. Such as the warp knitting machine of claim 1 or 2, wherein the support assemblies are inclined toward each other. Such as the warp knitting machine of claim 3, wherein the support assemblies are arranged to be symmetrical to each other in the neutral position of the rod group. Such as the warp knitting machine of claim 1 or 2, wherein the installation points are arranged below a plane where the center of mass of the rod group is located in the direction of gravity. Such as the warp knitting machine of claim 1, wherein the support assemblies are fixed to the machine tool in a hinged manner. For example, the warp knitting machine of claim 1, wherein one support assembly or each support assembly has a plurality of supports, and the supports are arranged side by side and separated along the longitudinal direction. Such as the warp knitting machine of claim 7, in which these supports The objects are arranged in pairs in sequence along the swing direction. Such as the warp knitting machine of claim 1 or 2, wherein the driving device acts on the rod group. Such as the warp knitting machine of claim 1, wherein the driving device acts on the support assembly.

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