JPS63120124A - Method for controlling moving quantity of traverse feed stand of warping machine - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a method for controlling the amount of movement of a cross feed table in a warping machine.

<Conventional technology> Warping is part of the preparation process for weaving textiles.

In this warping process, the required number of yarns is divided into multiple blocks and sequentially wound onto a drum that has a tapered part and a cylindrical part for each block. The amount of lateral movement of the device (transverse feed table) must be changed depending on the type of thread, thickness, number of threads, etc., so the amount of lateral movement of the device must be determined based on experience before winding the thread, and the amount of lateral movement of the device (transverse feed table) It was set using a continuously variable transmission, etc.

<Problem that the invention seeks to solve> However, to determine the appropriate amount of lateral movement.

The move requires years of experience and intuition! ! If the amount of II was not determined properly, the yarn layer (7) could not be wound up properly as shown in FIGS. 7 and 8.

Here, FIGS. 7 and 8 show the state of the yarn layer (7) improperly wound onto a drum (4) having a tapered part (2) and a cylindrical part (3) by a conventional warping machine. A drum (4) showing
) is a partial vertical cross-sectional view of the vehicle as seen from the front side. The above yarn layer (7
) If the amount of lateral movement is too large, it will climb too far into the taper part (2) of the drum (4) as shown in Figure 7, and if it is too small, it will rise too much as shown in Figure 8. There is not enough room to climb to the taper (2) part, so the drum axis and yarn layer (
7) is not parallel to the surface over the entire length.

For this purpose, multiple threads wound around the same drum (4)
Drum (4) - There was a problem in that the yarn length per rotation was not constant, resulting in uneven weaving of the product.

Means for Solving the Problems> By adopting the method of controlling the amount of movement of the cross feed table of a warping machine according to the present invention, the problems of the prior art described above can be solved.

In other words, the method involves forming a tapered part (2) and a cylindrical part (3).
), and is rotatable on a drum shaft (1) (
4) In a warping machine that warps a large number of threads by dividing them into several blocks and warping them, the machine is placed next to the cross feed table (6) on which is mounted the reed (5) that determines the winding position and width of the threads. The amount of movement,
The amount of lateral movement of the lateral feed table (6) in response to the rotation of the drum (4) is set to a preset amount of yarn so that the drum axis (1) line and the surface of the yarn layer (7) are always parallel. In order to follow the calculated value of the relationship over time with the thickness of yarn 1 (7), the thickness of the yarn layer (7) is measured during winding, and the control is performed while comparing this measured value with the calculated value. be. The thickness of the yarn layer (7) is measured from a reference point (^) located within a plane including the drum axis (1) line and at a predetermined distance from the outer periphery of the drum (4) to the surface of the yarn layer (7). The method of measuring the distance (X) of Reference points CB) and (C)
This method measures the distances (Y) and (Z) from to the yarn layer (7). Specific methods for measuring the distance (X), (Y), or (Z) include measuring the reflection position (P) at the photocell receiving part from the surface of the light thread layer (7) of the phototube; Adjustment of the brightness and darkness (Q) in the phototube light receiving section, which is caused by shielding by the thread layer (7), and the precision scale (8
), known means such as direct manual measurement can be cited.

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Operations and Embodiments] Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a plan view showing an example of a warping machine using the method of the present invention, and FIGS. 2 and 3 are diagrams each illustrating an example of a method for measuring the thickness of a yarn layer. FIG. 4 to 6 are diagrams illustrating specific means for distance measurement when measuring the thickness of a yarn layer, and each is a partial vertical sectional view seen from the side of the drum.

As shown in Fig. 1, in a warping machine using the method of the present invention, a drum (4) having a tapered part (2) and a cylindrical part (3) is mounted on a drum shaft (1) and a drum bearing (9) on the machine frame. ) (9) is rotatably supported. Taper portions (2) and (7) The taper angle is adjusted to suit the type and thickness of the yarn to be wound. This drum (4) uses a prime mover 1fi (10) as its power source, and includes pulley A (11) of the prime mover (10), pulley B (12) provided on the drum shaft (1), and a belt drive that interlocks these. It has a structure that rotates and winds the thread.

The cross feed table (6), which is a device for laterally moving the required number of threads to be wound onto the drum (4), is moved laterally by the rotation of the cross feed @ (16). That is, the rotation of the drum (4) is transmitted via the transmission (13) to the pulley C (14) connected to the transmission (13). Then, by rotating the pulley D (15) with a belt drive etc.
A screw-shaped horizontal feed shaft (1) fixed to this pulley D (15)
6) rotates to move the cross feed table (6) laterally.

On the cross feed table (6) are a yarn guide roller (18) supported by bearings (17) and a reed (5) that determines the yarn arrangement width and regulates the horizontal winding position of the yarn. )
is placed.

Here, the above transmission (1
3), set the gear ratio of 3), and further adjust the yarn layer (
7), and this measured value is the 11th axis of the drive (1
) Lines and threads! (7) is always parallel to the surface of the drum (4). By controlling the amount of lateral movement of the traverse feed table (6), the yarn is fed to the drum (1) so that the surface of the yarn W (7) is always parallel to the drum axis (1) as shown in FIGS. 2 and 3. 4) It can be wrapped around. In addition, the drum shaft (1) is shown in Figures 2 and 3.
Although not shown, this is because the drum axis (1) line and the surface of the cylindrical part (3) of the drum (4) are parallel, so the surface of the yarn layer (7) is parallel to the cylindrical part as shown in these figures. This is because if it is parallel to the aspect (3), it can be said that it is parallel to the drum axis (1) line.

An example of measuring the thickness of the yarn layer (7) in the present invention is to measure the distance (X) as shown in FIG.

The thickness of this yarn layer (7) is measured in the middle of winding the yarn,
A large number of yarns are wound so that the surface of the yarn layer (7) is always parallel to the drum axis (1) line. That is, in the plane containing the drum axis (1) line and the drum (4)
Thread layer (7) from the reference point (A) located a predetermined distance from the outer periphery
Measure the distance <X> to the surface of the drum axis (1) and detect the difference between the calculated value and the measured value set in advance so that the line of the drum axis (1) and the surface of the yarn layer (7) are always parallel, Transmission (13)
The amount of lateral movement of the traverse carriage (6) is adjusted by changing the gear ratio of .

Another example of the thickness measurement of the yarn layer (7) in the present invention is to measure the thickness of the yarn layer (7) on the measurement reference line (L) parallel to the drum axis (1) line of the drum (4), such as No. 3r2I on the drum (4). Two reference points (B), (C) surface mateno distance t of empty yarn layer (7)
It measures ilt(Y) and (Z). By performing this measurement midway through winding the yarn and keeping the surface of the yarn layer (7) always parallel to the drum axis (1) line, appropriate warping work is performed.

Specifically, the judgment as to whether or not the front'f2 measurement reference line (L) and the surface of the yarn layer (7) are parallel is made by checking the reference line (L) as shown in Figure 3.
Thread layer (7) from reference point (B) and reference point (C) on L)
This is done by measuring the distance ('/) and (Z) to the surface of and detecting the difference between them. If there is a difference between these, the amount of lateral movement of the traverse carriage (6) is adjusted by changing the gear ratio of the variable speed Lir3), as in the previous example.

Metrics,! (L) is a straight line parallel to the drum axis (1) line within the plane that includes the drum axis (1) line and at a predetermined interval from the outer periphery of the drum (4), even if it is installed on the machine frame. It may also be the mounting position of the device.

Furthermore, the distance am can be determined by manual measurement, optical method, or other methods when measuring the thickness of the thread layer (7) on the two sides.

An example of this will be explained next.

In the example of distance measurement shown in FIG. 4, the light f! ! This is done by measuring the reflection position (P) of light from the thread layer (7) of the tube at the photocell receiver, and the surface position of the thread layer (7) is CP2'
) and (['3') are different in position, of course their reflection positions! ! ! (P2) and (P a) are different. This difference is measured. Note that (P1') is the position on the circumferential surface of the drum (4), and (Pl) is the position of reflection from it.

In the distance measurement example shown in Figure 5, the bright and dark area (Q
), and if there is a difference in the surface position of the thread layer (7) as shown in Figure 1, the positions of the light and dark areas (Q2) and (Q3) will also differ, and this difference is measured.

(Ql) is the brightness and darkness depending on the drum (4) aspect. In the present invention, the term "bright and dark areas" refers to the boundary line between bright areas illuminated by light and dark areas in shadow.

In the example shown in Figure 6, the thickness of the yarn layer (7) is measured using a precision scale (
8), or by counting the matching points of both the front and the vice scales with high precision electrically (e.g. 1/1000)
Measure using the scale of m). As shown in the figure, a point (Rt) on the circumferential surface of the drum (4) and two points (R2) and (R3) on the surface of the yarn layer (7) are measured and the difference therebetween is determined.

<Effects of the Invention> As explained above, according to the method of the present invention, setting the amount of lateral movement per rotation of the drum of the lateral feed table before the start of yarn winding does not require relying on intuition based on many years of experience, as in the conventional method. There is no
Just set the approximate value. The yarn winding condition is determined at an appropriate time during yarn winding after yarn winding has started, and the amount of lateral movement of the cross feed cart is adjusted each time, making it possible to consistently produce high-quality textile products and improve product yields. This has the beneficial effect of improving performance.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of a warping machine using the method of the present invention, and FIGS. 2 and 3 are diagrams each illustrating the method of measuring the thickness of the yarn layer, both from the front side of the drum. It is a partial vertical cross-sectional view as seen. 4 to 6 are diagrams illustrating specific means of distance measurement carried out when measuring the thickness of the yarn layer, and all are partial vertical cross-sectional views seen from the side of the drum. FIGS. 7 and 8 are partial vertical cross-sectional views, viewed from the front side of the drum, showing the state of the yarn layer improperly wound onto the drum by the conventional warping machine. (A), (B), (c) Reference point (L) Measurement reference line parallel to the drum axis (X), (Y), (
Z) Distance to the surface of the yarn layer (1') Reflection position of light in the photocell receiver (Q) Bright and dark areas of light in the phototube receiver (1) Drum shaft (2) Part of the taper (3) Cylindrical part (4) ) Drum (5) Reed
(6) Cross feed table (7) Thread layer (8) Precision scale (-13) Transmission

Claims (1)

[Claims] 1. A drum (4) having a tapered part (2) and a cylindrical part (3) and rotatable around a drum shaft (1) is wound with a large number of threads divided into several blocks. In a warping machine that warps the yarn, the amount of lateral movement of the lateral feed table (6) on which the reed (5) that determines the winding position and width of the yarn is set is determined by the lateral movement amount according to the rotation of the drum (4). The amount of lateral movement of the feed base (6) is the same as the drum axis (1
) In order to follow the calculated value of the relationship over time between the yarn amount and the thickness of the yarn layer (7), which is set in advance so that the line and the surface of the yarn layer (7) are always parallel, the yarn is A method for controlling the amount of movement of a cross feed table for a warping machine, characterized in that the thickness of the layer (7) is measured and control is performed while comparing the measured value and the calculated value. 2. The thickness of the yarn layer (7) is measured by measuring the distance ( A method for controlling the movement amount of a cross feed table of a warping machine according to claim 1, which is the measurement of X). 3 The thickness of the yarn layer (7) is measured using a measurement standard line (L) parallel to the drum axis (1) line that is within a plane that includes the drum axis (1) line and at a predetermined distance from the outer periphery of the drum (4). Point (B)
and the distance (Y) from (C) to the surface of the thread layer (7), (
Z) A method for controlling the amount of movement of a cross feed table of a warping machine according to claim 1. 4. The distance measurement is the measurement of the reflection position (P) at the light receiving part of the phototube from the surface of the light thread layer (7) of the phototube. Volume control method. 5. Horizontal feeding of the warping machine according to claim 2 or 3, wherein the distance measurement is the measurement of the bright and dark area (Q) in the phototube light receiving section, which is generated when the light from the phototube is blocked by the thread layer (7). Table movement amount control method. 6. The method for controlling the amount of movement of a cross feed table of a warping machine according to claim 2 or 3, wherein the distance measurement is directly measured by hand using a precision scale (8).