JP2826639B2 - Synchronous control method and control device for drum machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to a synchronous control method and control of a drum machine for synchronizing a reed feed (movement) with a rotation of a drum at a predetermined ratio according to a type of a warp. It concerns the device.

2. Description of the Related Art Conventionally, as a means for synchronizing a drum rotation speed and a reed feed amount of a drum, a drum shaft and a reed feed shaft are controlled by a stepped transmission comprising a combination of a number of gears. It is wound around the drum by changing the angle of the taper part of the drum together with the change. However, in such a means, fine adjustment cannot be performed because the transmission is stepped. The adjustment is made by adjusting the angle of the tapered portion, and the adjustment of these combinations requires a great deal of skill.

Problems to be Solved by the Invention The present invention improves workability by eliminating the operation of adjusting the taper angle of the drum by electrically synchronizing the reed movement in accordance with the rotation of the drum and the type of warp, etc. It is an object of the present invention to provide a synchronous control method and a control device for a drum machine for simplification.

[Configuration of the invention]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described drawbacks of the prior art, such as workability, and has as its object to electrically synchronize drum rotation and reed movement at a predetermined ratio.

The point is that the reed is moved by a drum machine that winds a large number of warp yarns by guiding it to a drum having a tapered part and a cylindrical part by a reed yarn guide roll that can be sent and moved in the axial direction of the drum. A ratio synchronizing device for controlling a moving motor to be driven is provided. First, a predetermined synchronizing ratio determined by the type of the warp is input to the ratio synchronizing device. Input to the synchronizer,
The ratio synchronization device calculates the number of rotations of the drum with a synchronization ratio, and performs a ratio synchronization control of the moving motor for feeding the reed. A synchronization control method for a drum machine, a drum having a tapered portion and a cylindrical portion, Synchronization of the drum machine, in which the reed is guided obliquely with respect to the axial direction of the drum in a drum machine that winds a large number of warps by guiding it with a reed yarn guide roll that can be sent and moved in a direction parallel to the tapered part. Control method An encoder that detects the number of turns of a drum in a drum machine that winds a large number of warps on a drum having a tapered portion and a cylindrical portion, guided by a reed yarn guide roll that can be fed and moved in the axial direction of the drum. And a ratio synchronization device for calculating a predetermined synchronization ratio determined by the type of the warp to be inputted. The ratio synchronization device calculates the rotation speed of the drum by the synchronization ratio, and Send A synchronous control device for a drum machine configured to synchronously control a driving motor, and a drum having a tapered portion and a cylindrical portion, guided by a reed thread guide roll capable of being fed and movable in a direction parallel to the tapered portion of the drum, In a drum machine for winding a large number of warps, a synchronous control device for a drum machine in which a reed is fed obliquely with respect to the axial direction of the drum is provided to solve the above-mentioned disadvantage.

In the present invention, the number of revolutions of the drum is detected by an encoder, and the detected value is input to a ratio synchronization device, and the type of warp (including count, thickness, density, tension force, etc.) is determined in advance.
In accordance with the above, the detection value is arithmetically processed based on the synchronization ratio input to the computer, and the oblique movement motor is synchronously driven by the ratio synchronization device.

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a drum machine body which is a partial warping machine, in which a drum shaft 3 is mounted on bearings 4 and 4a between side frames of a frame 2 having a frame shape. A drum 7 comprising a cylindrical portion 5 and a skirt-shaped tapered portion 6 is fixed to the drum shaft 3.

Reference numeral 8 denotes a drum rotation motor for rotating the drum 7. A pulley 10 fixed to a drive shaft 9 of the drum rotation motor 8 and a pulley 11 fixed to one end of the drum shaft 3.
The belt 12 is wound between the two.

Reference numerals 13 and 13a denote encoders for detecting the number of rotations of the drum, which are mounted on the other end of the drum shaft 3 and can transmit a predetermined number of pulses per rotation of the drum 7.

Numeral 14 denotes a lateral movement guide which extends between the side frames of the frame 2 in parallel with the drum shaft 3, and a lateral movement table 15 is movably provided on the lateral movement guide 14. An encoder 17 is provided which is capable of transmitting a predetermined number of pulses connected to the screw shaft 16 in parallel with the moving guide 14 and screwing a screw shaft 16 horizontally suspended between the side frames of the frame 2. The horizontal movement table 15 is moved by the rotation of the horizontal movement motor 18.

Reference numeral 19 denotes an oblique moving guide provided on the horizontal moving table 15, which is disposed so that the longitudinal direction of the oblique moving guide 19 is parallel to the tapered portion 6 of the drum 7 in plan view, and the screw shaft 20 is An oblique movement motor 22 having an encoder 21 capable of transmitting a predetermined number of pulses to the screw shaft 20 is connected to the oblique movement guide 19 so as to be rotatable in a parallel manner over the longitudinal direction of the oblique movement guide 19.

Reference numeral 23 denotes a reed mounting table.
Are mounted so as to be movable in the longitudinal direction and screwed with the screw shaft 20, and are moved in the longitudinal direction by rotation of the oblique movement motor 22.

Reference numeral 24 denotes a reed to be mounted on the reed mounting table 23, which is rotatable about the vertical axis and is detachably mounted.

Reference numeral 25 denotes a yarn guide roll. The yarn guide roll 25 is disposed at a front position on the reed mounting base 23 (downstream of the traveling route of the warp W) in parallel with the drum shaft 3 and has one end reed. It is rotatably mounted on a column 26 standing upright from the mounting stand 23.

The reason why the feed of the reed 24 is parallel to the tapered portion 6 of the drum 7 is that the drum 7 and the yarn guide roll 25 are arranged close to each other. The thread guide roll 25 of the reed 24 may be moved in the axial direction of the drum 7.

Reference numeral 27 denotes a cut mark device.
Has a spray unit 28 for spraying the paint by an appropriate mechanism disposed on the reed mounting base 23 in the traveling path of the warp W.

Reference numeral 29 denotes a yarn length detecting device that detects the yarn length of the warp W. The yarn length detecting device 29 is provided with a touch roll 31 that comes into contact with the warp W at the tip of an encoder 30 that can transmit a predetermined number of pulses. The guide rolls 32 and 32a are arranged below the touch roll 31 so that the warp W is in circumferential contact with the outer periphery of the touch roll 31, and are arranged in the running path of the warp W via the bracket 33.

Reference numeral 34 denotes a computer such as a sequencer built in the main body 1 of the drum machine. The computer 34 is connected to a host computer 35 installed outside (office or the like), and various data input to the host computer 35, The data of each item of the warping instruction shown in FIGS. 5 and 6 can be inputted to a data memory (not shown) of the computer 34.

The input, storage, calculation, etc. of various data are shared by two host computers 35 and a computer 34 (sequencer). Of course, it may be possible.

The computer 34 includes the encoder 17, the motor 18 for lateral movement, and the motor 8 for rotating the drum 8.
6 and 36a, and encoders 13 and 30 are connected to a counter section (not shown).

Reference numeral 37 denotes a ratio synchronizer. The ratio synchronizer 37 is connected to the computer 34 and the encoder 13a, and is also connected to an NC control unit 38 connected to the computer 34.

The encoder 21 and the oblique movement motor 22 are connected to the NC control unit 38 via a servo drive unit 39, and an operation switch (not shown), a positioning sensor (not shown) and the like are connected.

Next, the synchronous control method of the drum machine according to the present invention will be described. First, as shown in FIG. 4, the drum 7 is rotated a predetermined number of times, and the measured yarn layer T of the warp W at that time is measured. The yarn layer T is input to the host computer 35, and the data of each item of the warping instruction shown in FIGS. 5 and 6 is input to the host computer 35 and stored in the data memory of the host computer 35 or the computer 34. , The first of the preparation stages
Complete the steps.

The measured yarn layer T of the warp W will be described. When the warp W is wound around the drum 7 a predetermined number of times, the warp W
The measured yarn layer T of the wound warp W differs depending on the type, count, thickness, density, tension force, and the like.

Further, the predetermined number of rotations of the drum 7 may be a small number of rotations measured in a test, or the data of the conventional stepped transmission may be used as it is.

In the case of measurement in a test, a winding machine (such as a bobbin) that can be easily measured may be used instead of using the drum 7.

The measured yarn layer T is measured by the drum 7 and the computer 34
May be continued after the input to.

Furthermore, it is of course best to re-enter the run values for the present application.

Next, each data input to the host computer 35 is transferred to and input to the computer 34, and the computer 34 reeds per one rotation of the drum based on the measured yarn layer T.
The feed amount of 24, that is, the synchronization ratio is calculated, or the synchronization ratio calculated by the host computer 35 is transferred and input to the computer 34.

Then, a large number of warps W drawn out from a creel (not shown) are bound to the drum 7 via a reed 24 and a yarn guide roll 25, and several of the warps W are a part (a fixed number).
The guide rolls 32 and 32a are adjusted so as to make contact with the outer periphery of the touch roll 31 of the encoder 30 by approximately 180 degrees, and the winding preparation is completed.

At the time of winding, the drum rotation motor 8 is driven via the servo drive unit 36a to rotate the drum 7, and the rotation speed of the drum rotation motor 8 is detected by the encoder 13a. Input to ratio synchronizer 37.

Then, the detected value of the number of revolutions is converted into a synchronization ratio (MAX 99.9999
(%), Calculate and process by NC
Output to 38 as a pulse train for synchronization.

The oblique movement motor 22 is synchronously driven via the servo drive unit 39 based on the periodic pulse train to rotate the screw shaft 20, and the reed mounting table 23 screwed to the screw shaft 20 is moved obliquely to the oblique movement guide.
The reed 24 comes into contact with the tapered portion 6 of the drum 7 by moving the reed 24 in the longitudinal direction (parallel to the tapered portion 6 of the drum 7 and oblique to the axial direction of the drum 7) along the length 19 along the feed amount. To prevent this, the reed 24 is moved in the axial direction of the drum 7 and is sequentially wound so that the cross-sectional shape of the warp W wound on the drum 7 becomes a parallelogram.

In this way, the intended section warping is completed, and the next morning section as described later is continued.

In addition, an operation which is not directly related to the subject of the present invention will be described.
, The measured value is read for each clock pulse of the computer 34, the difference in the yarn length between the pulses is calculated, and the yarn speed is calculated based on the difference between the yarn length and the time of the clock pulse. (Yan speed) is calculated, and the drum rotation speed is controlled while comparing with the set yarn speed inputted to the computer 34, so that the yarn speed of the warp W is made constant.

More specifically, the following relationship exists between the rotational speed of the drum 7 and the yarn speed of the warp W.

The warping length of the warp thread W wound per rotation of the drum 7 (one circumference of the outer circumference of the drum 7) is expressed by “diameter of drum 7 ×
Pi ".

By the winding, the diameter of the drum 7 gradually increases.

Therefore, assuming that the rotation speed of the drum 7 is constant, the warp W to be wound becomes longer as the winding is continued.

Then, the tension of the warp yarn W increases, the yarn layer wound around the drum 7 is in a contracted state, the operating speed of the upstream machine is inevitably increased, and the incidence of yarn cutting and other accidents is increased.

Next, when the rotation of the drum 7 is stopped, there is an emergency stop of the thread cutting, but when the normal winding reaches a predetermined amount (for example, 90% or more), the accumulated yarn of the warp W measured by the encoder 30 is measured. By sequentially storing the lengths in the computer 34, the accumulated yarn length is subtracted from the set warping length (or the yarn length of each counter) input to the computer 34,
The rotation speed of the drum 7 is controlled to be reduced at a constant rate until the subtraction value becomes zero, and the rotation is stopped to complete the initial section warping.

Also, when applying the cut mark according to the number of reciprocals and the yarn length, in the process of repeating the start and stop for each reciprocal as described above to achieve the set warping length, the spray of the cut mark device 27 at the time of stop is performed. The coating is applied to the predetermined number of warps W from the section 28.

In the next section warping, first, the servo drive unit is controlled by the lateral movement value input from the host computer 35.
The screw 18 is rotated by driving the lateral movement motor 18 via 36, and the lateral movement table 15 screwed to the screw shaft 16 is moved along the lateral movement guide 14.

Next, the computer 34 drives the oblique movement motor 22 via the servo drive unit 39 to rotate the screw shaft 20, and moves the reed mounting table 23 screwed to the screw shaft 20 to the origin along the oblique movement guide 19. By moving the reed 24 to the position, the reed 24 is moved to the oblique movement origin.

In this manner, the section is moved to the origin position of the next section warping, that is, the position set by the lateral movement value input to the computer 34 and the lateral movement adjustment value according to the type of the warp W.

After that, the drum 7 recorded in the initial section warping is used.
The next section warping is completed so that the set warping length is controlled by the number of rotations to achieve the same warping length.

In the initial section, the rotational speed of the drum 7 is controlled by the warping length, but in the subsequent sections, the rotational speed is controlled to be the same as the rotational speed of the drum 7 in the initial section.

The reason is that the staple yarn W wound around the drum 7
Is removed from the loom, and the sections of the section are simultaneously rewound on the beam attached to the warper, so that the warp of the drum is eliminated at the time of rewinding to the beam.

That is, if the rotation speed of the drum 7 in each section is controlled by the warping length, the rotation speed of the drum 7 may be different even with the same warping length due to some external factor (tension, upstream machine). .

If the cross-sectional shape of the wound warp W does not become a parallelogram due to some influence during the initial section warping, change the feed amount during warping to correct it. By making the correction values and the like stored in the computer 34, the same data can be controlled during the next section aging.

〔The invention's effect〕

In short, the present invention provides a moving motor 22 for moving the reed 24.
Is provided. First, a predetermined synchronization ratio determined by the type of the warp W is input to the ratio synchronization device 37, and the number of rotations of the drum 7 is detected, and the detected value is compared with the ratio. Since the rotation speed of the drum 7 is input to the synchronizing device 37, the rotation speed of the drum 7 is calculated by the synchronizing ratio, and the moving motor 22 for feeding the reed 24 is ratio-synchronized controlled.
Since the movement of 24 can be performed by inputting a predetermined synchronization ratio to the computer 34 so that the movement of the warp W is optimal for the type, count, etc. of the warp W at that time, operability is improved,
Also, by eliminating the taper angle adjustment work in the combination of the stepped transmission and the variable taper portion as in the past,
Workability can be remarkably improved, and the structure such as fixing the tapered portion of the drum can be simplified.

In addition, since the reed 24 is fed obliquely with respect to the axial direction of the drum 7, the drum 7 and the reed 24 can be arranged close to each other, and the warp W can be guided reliably. The effect is great.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a control circuit block diagram of a synchronization control device in a drum machine main body according to the present invention. FIG. 2 is a partially omitted plan view of the drum machine main body. 3 is a cross-sectional view taken along line AA of FIG. 2, FIG. 4 is a plan view showing the measured yarn layer, and FIGS. 5 and 6 are explanatory diagrams of warping instructions. 7 ... Drum, 8 ... Drum rotation motor, 13a ... Encoder 22 ... Diagonal movement motor, 24 ... Reed, 34 ... Computer 37 ... Ratio synchronizer

Claims (4)

(57) [Claims] 1. A moving device for moving a reed in a drum machine for winding a large number of warp yarns on a drum having a tapered portion and a cylindrical portion, the guide being guided by a reed yarn guide roll movable in the axial direction of the drum. A ratio synchronizing device for controlling the motor for use is provided. First, a predetermined synchronizing ratio determined by the type of the warp is input to the ratio synchronizing device, and the number of rotations of the drum is detected. Wherein the ratio synchronization device calculates the number of rotations of the drum based on the synchronization ratio, and performs ratio synchronization control of the moving motor for feeding the reeds. 2. A drum machine for winding a large number of warp yarns on a drum having a tapered portion and a cylindrical portion, the guide being guided by a reed yarn guide roll movable and movable in a direction parallel to the tapered portion of the drum. 2. The method according to claim 1, wherein the reed is fed obliquely with respect to the axial direction. 3. A drum machine for winding a large number of warp yarns on a drum having a tapered portion and a cylindrical portion, guided by a yarn guide roll of a reed which can be fed and moved in the axial direction of the drum. A ratio synchronization device is provided for calculating a detection value from the encoder to be detected and a predetermined synchronization ratio determined by the type of the input warp. The ratio synchronization device calculates the rotation speed of the drum by the synchronization ratio. A synchronous motor for feeding a reed, wherein the motor for feeding the reed is ratio-synchronized controlled. 4. A drum machine for winding a large number of warp yarns on a drum having a tapered portion and a cylindrical portion, guided by a reed yarn guide roll movable in a direction parallel to the tapered portion of the drum and movable. The synchronous control device for a drum machine according to claim 3, wherein the reed is fed obliquely with respect to the axial direction.