JPH081021B2 - Knitting machine tension adjustment device - Google Patents

Description

The present invention relates to a knitted fabric tension adjusting device in a knitting machine.

When knitting a knitted fabric with a constant knitting width by a knitting machine, the knitted fabric may be wound with a constant tension by a roller driven by a torque motor, but when the knitting width is changed like a body. When knitting with a constant tension, the knitted fabric is cut or the needle is broken as the knitting width becomes narrower, and when the knitting width becomes wider, the tension per needle decreases and the knitted fabric becomes This causes the inconvenience of floating and not being able to knit.

It is an object of the present invention to provide a knitted fabric tension adjusting device that does not cause the above inconvenience even when the knitting width of the knitted fabric changes significantly and has a simple structure.
As shown in the figure, from the knitting data storage means A, the thread tension setting means B applied to one needle, and the knitting data output from the storage means A, the number of stitches of the thread in each knitting course is determined. And a knitting device for computing the knitting fabric tension corresponding to the number of stitches from the number of stitches and the output of the tension setting device B, and a knitting device for winding the knitted fabric with a tension corresponding to the output of the computing device. It is characterized by comprising a motor D for ground winding.

 Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 2, (1) is, for example, a knitting tape in which knitting data on the body is written.
The knitting data of (3) is stored in the RAM (3) which is the knitting data storage means A by the CPU (2). (4) is a terminal signal generator, such as a limit switch, which detects the carriage when it reaches the left and right ends and outputs a signal, and (5) is, for example, the tension setting means B of the thread applied to one needle. A thread tension setting device composed of a digital switch, in which an appropriate tension is set by the setting device (5) according to the gauge and properties of the thread.

The CPU (2) calculates the number of stitches of the yarn in one course of knitting read from the RAM (3) by the output signal from the end signal generator (4), and the number of stitches and the tension setting device ( The calculation means C for calculating the knitting fabric tension corresponding to the number of stitches in each knitting course by multiplying the output of 5) and the output thereof is mechanically selected through the input / output port (6). It constitutes a control means for supplying a needle selection signal to the mechanism (7).

(8) is a torque motor as a knitting fabric winding motor D for winding a knitted fabric, and the torque motor (8) is connected to an AC power supply terminal (10) via a control element (9), for example, a triac, The output signal of the CPU (2) applied to the control pole of the element (9) through the D / A converter (11) and the input / output port (12), depending on the number of stitches of the thread in one knitting course. It was driven so as to give an appropriate tension to the knitted fabric. (13) is a roller which is driven by the torque motor (8) and winds down the knitted fabric (13).

Next, the operation will be described with reference to the flow chart shown in FIG.

First, the knitting data written on the knitting tape (1) is read by a reader (not shown), and the RAM (3) is read via the CPU (2).
, And then start the knitting machine. Each time the carriage reaches the right or left end, the end signal generator (4) outputs an end signal, and the knitting data of one knitting course is continuously output from the RAM (3) by this signal. This data is input /
Mechanical needle selection mechanism (7) through output port (6)
Is activated and stored again in the RAM (3). When the knitting of the knitting course is completed by running the carriage,
The knitting data of the knitting course stored in the RAM (3) is read back to the CPU (2), and the number of stitches of the thread is calculated from the knitting data, and then the thread tension setting device. From the tension of the thread applied to one needle set in (5), the tension corresponding to the number of stitches of the thread is calculated. The tension data is the input / output port (12) and D / A.
Since it is applied to the control pole of the triac (9) via the converter (11), the voltage applied to the torque motor (8) changes. Thus, the torque motor (8) applies the tension to the knitted fabric (14) through the roller (13) to wind it down.

When the end signal is output again from the end signal generator (4) after the knitting of the knitting course is completed, the second signal is output from the RAM (3).
The knitting data of the knitting course is read out to the CPU (2), and this knitting data is input / output port (6).
The mechanical needle selection mechanism (7) is activated via the
It is stored in (2). When the knitting of the second knitting course is completed by the carriage running, the knitting data of the second knitting course stored in the RAM (2) is read again to the CPU (2), where The number of stitches of the thread is calculated from the knitting data, and then the tension corresponding to the number of stitches of the thread is calculated as described above. Thus torque motor (9)
Applies the tension to the knitted fabric (14) through the roller (13) to wind it down.

In the following knitting courses as well, similar to the above first and second knitting courses, the knitted fabric (14) is wound by the rollers (13) with a tension according to the number of stitches of the yarn in each course. Can be lowered.

Thus, according to the present invention, the number of stitches in each knitting course is calculated from the knitting data storage means, the thread tension setting means for one needle, and the knitting data output from the storage means. A computing unit that computes a knitted fabric tension according to the number of stitches and the output of the tension setting unit, and a knitting fabric winding motor that winds the knitted fabric with a tension according to the output of the computing unit. Even when the width of the knitted fabric changes, the knitted fabric can be wound with a tension according to the number of stitches of the thread, and thus the needle is not broken or the knitted fabric is not cut and the knitting is not possible. The effect is that there is no effect, and because the knitting data can be used as basic data for adjusting the knitting fabric tension, the structure is simple and compact, and the number of stitches with which the thread is threaded depends on each course. Even when setting the tension finely Has the effect of constant is not applied is easy and time.

[Brief description of drawings]

FIG. 1 is a block diagram for clarifying the configuration of the present invention, FIG. 2 is a block diagram of an embodiment of the present invention, and FIG. 3 is a flow chart thereof. (1) ... Knitting tape, (2) ... CPU (3) ... RAM, (4) ... End signal generator (5) ... Thread tension setting device, (7) ... Mechanical selection Needle mechanism (8) …… Motor for winding the knitted fabric, (9) …… Control element

Claims (1)

[Claims] 1. A knitting data storage means, a thread tension setting means for one needle, and the number of stitches of a thread in each knitting course is calculated from the knitting data output from the storage means. A computing unit that computes a knitted fabric tension according to the number of stitches and the output of the tension setting unit, and a knitting fabric winding motor that winds the knitted fabric with a tension according to the output of the computing unit. A knitting fabric tension adjusting device for a knitting machine, comprising: