JP2799640B2 - Yarn reed drive for warp knitting machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn reed driving device for a warp knitting machine.

[0002]

2. Description of the Related Art Conventionally, yarn guide reeds for guiding a warp to a knitting needle in a warp knitting machine often have a displacement amount set by a patterning device such as a pattern wheel or chain links.
In addition, various devices such as a pin drum and a ball screw are required as an intermediate device for exchanging a step rotation amount by an electric signal of a rotary pulse motor or the like into a linear momentum,
In this device, a device for correcting backlash and other displacement errors is separately required, and the load of the intermediate device places a heavy burden on the drive side (for example, a motor or the like). For this reason, there were considerable disadvantages in terms of cost and space.

[0003] The applicant has already filed Japanese Utility Model Publication No. 59-17909.
A linear motor is applied as a motion source of the yarn guide reed, and a transmission member for transmitting the linear motion to the yarn guide reed is detachably locked to the yarn guide reed side and the linear motor side. Has been proposed.

[0004]

Although the above-mentioned disadvantages are considerably solved by this device, the accumulated errors and vibrations caused by mechanical contact caused by the interposition of the transmission member between the yarn guide and the linear motor. However, noise cannot be avoided, and the intermediate transmission member imposes a heavy burden on the drive source, making it difficult to quickly follow the yarn reed that frequently starts and stops.
In addition, since the linear motor portion is separately provided from the yarn reed via the transmission member in terms of space, a space wider than that is required. SUMMARY OF THE INVENTION An object of the present invention is to provide a driving device for a yarn reed which eliminates the above-mentioned disadvantages, has no accumulated error, has good high-speed followability, and can save space.

[0005]

According to the present invention, a linear motor is directly connected to at least one end of a yarn guide reed of a warp knitting machine, and the yarn guide reed is fixed to a movable element of the linear motor directly or via a plate. It is characterized by.

[0006]

According to the above-mentioned structure, the yarn reed driving apparatus of the present invention can smoothly shunt the yarn reed without causing any accumulated error.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a front view of the periphery of a yarn reed driving device according to the present invention, and a linear motor 1 is controlled by a control device 9. The control device 9 includes well-known control devices, that is, a position control circuit, a linear motor drive circuit, an encoder, and the like, but a specific description thereof is omitted here. The steel guide rod 2 is provided with a guide finger 3 that performs a shogging motion by the thrust of the linear motor 1 screwed thereto. At several locations on the yarn reed, the yarn reed is held by a reed suspension holder 5 that supports a reed hanging pin 4 mounted on the yarn reed.

FIG. 2 is a front view of a linear motor portion of the yarn guide reed driving device of the present invention, and FIG. 3 is a cross-sectional view taken along line BB of FIG. The linear motor has a single-sided excitation structure,
The stators 6 arranged in a row on the stator 8 excite the individual movers 7 according to control pulses from the control device to generate thrust, thereby causing the steel yarn reed 2 to move in the direction of arrow A. Can be shogged.

FIG. 4 is a schematic side view of a main part of the knitting when the yarn guide reed driving device of the present invention is installed on a warp knitting machine. Regarding the arrangement of the yarn reeds, a slant angle of the yarn reed having no problem in space can be obtained. As a result, a large number of yarn reeds can be arranged.

When the yarn reed is long, a linear motor can be directly connected to both sides for driving.

[0011]

According to the present invention, by eliminating the transmission member and directly connecting the linear motor, it is possible to reduce the accumulated error, thereby improving the high-speed follow-up performance, thereby increasing the speed, and achieving individual linear motion. Since there is no need to install a motor unit, the installation space can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of the periphery of a yarn reed driving device according to the present invention.

FIG. 2 is a front view of a linear motor of the yarn reed driving device of the present invention.

FIG. 3 is a sectional view taken along line BB in FIG. 2;

FIG. 4 is a schematic side view of a main part of a knitting when the yarn reed driving device of the present invention is installed on a warp knitting machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Linear motor 2 Steel guide reed 3 Guide finger 4 Reed hanging pin 5 Reed hanging holder 6 Stator 7 Mover 8 Stator

Claims (1)

(57) [Claims] 1. A warp knitting machine characterized in that a linear motor is directly connected to at least one end of a yarn guide reed of a warp knitting machine, and the yarn guide reed is fixed to a mover of the linear motor directly or via a plate material. Yarn reed driving device.