JPH03186570A - Synchronous controller for drum machine - Google Patents

Abstract

PURPOSE:To improve the workability by installing a rate synchronizing device which rate-processes the detection value supplied from an encoder for detecting the number of revolution of a drum and the synchronization rate which is arbitrarily set by a computer, and rate-synchronization-controlling an aslant shifting motor and a drum revolving motor. CONSTITUTION:In winding, the feed quantity of reeds per revolution of a drum is calculated on the basis of an actually measured yarn layer by a computer 34, and a drum revolving motor 8 is driven through a servodriving part 36a, and a drum 7 is revolved, and the number of revolution of a motor 8 is detected by an encoder 13a, and the detection value is inputted into a ratio synchronizing device 37. Then, the synchronization rate which is previously inputted into the computer 34 according to the kind of a warp W is rate-processed, and the result is outputted as synchronizing pulse train into an NC control part 38 by the device 37, and an aslant shifting motor 22 is synchronously driven through a servodriving part 39, and a screw shaft 20 is revolved, and a reed installation board 23 is shifted by the above-described feed quantity along an aslant shift guide 19, and the reed 24 is shifted to wind the warp W.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to a synchronous control bag W in a drum machine that synchronizes the rotation of a drum and the feeding of a reed.

Conventionally, as a means of synchronizing the drum rotation speed and the reed feed amount, the drum shaft and the reed feed shaft are connected via a stepped transmission consisting of a combination of many gears. Changing the feed amount involves adjusting the angle of a part of the tapered part of the drum to wrap it around the drum, but with this method, the transmission is geared, so delicate adjustments cannot be made; This fine adjustment is compensated for by adjusting the angle of a part of the taper of the drum, and since adjusting these combinations requires great skill, the workability is extremely poor.

The present invention electrically synchronizes the rotation of the drum and the movement of the reed, thereby eliminating the need to adjust the taper angle of the drum, improving work efficiency, and simplifying the structure of a drum machine. The purpose is to provide a control device.

1 Structure of the Invention] The present invention has been made in view of the drawbacks such as workability based on the above-mentioned prior art.
The purpose is to electrically synchronize the rotation of the drum and the movement of the reed at an arbitrarily set ratio, and its gist is to use an encoder that detects the number of rotations of the drum in a drum machine that winds a large number of warp threads around the drum. A ratio synchronization device is provided to process the detected value from the synchronous ratio and a synchronization ratio arbitrarily set from the computer, and the ratio synchronization device controls the diagonal movement moke for moving the reed and the drum rotation motor in ratio synchronization. The present invention aims to solve the above-mentioned drawbacks by providing a synchronous control device for a drum machine.

In the present invention, the rotational speed of the drum is detected by an encoder, this detected value is input to the ratio synchronization device, and the synchronization ratio inputted in advance to the computer L according to the type of warp is calculated as a ratio. After processing, the ratio synchronizer drives the diagonal movement motor synchronously.

An embodiment of the present invention will be described based on the drawings. 1 is a drum machine main body which is a partial warping machine, and a drum shaft 3 is mounted between the side frames of a frame 2 with a bearing 4. 4a, and a drum 7 consisting of a cylindrical portion 5 and a skirt-like tapered portion 6 is fixed to the drum shaft 3.

8 is a drum rotation motor that rotates the drum 7;
A pulley 10 fixed to the drive shaft 9 of the drum rotation motor 8, and a pulley 11 fixed to one end of the drum shaft 3.
During this time, the belt 12 is wound.

Reference numeral 13.13a denotes an encoder for detecting the number of rotations of the drum, which is attached to the other end of the drum shaft 3 and is capable of emitting a predetermined number of pulses per rotation of the drum 7.

Reference numeral 14 denotes a lateral movement guide horizontally suspended between the side frames of the frame 2 parallel to the drum shaft 3. A lateral movement table 15 is movably provided on the lateral movement guide 14. The frame 2 is parallel to the movement guide 14 and rotatable.
A screw shaft 16 horizontally suspended between the side frames of the screw shaft 1 is screwed together, and the screw shaft 1
The lateral movement table 15 is moved by the rotation of a lateral movement motor 18 having an encoder 17 which can transmit a predetermined number of pulses connected to the lateral movement motor 18.

Reference numeral 19 denotes a diagonal movement guide provided on the lateral movement table 15, which is disposed so that the longitudinal direction of the diagonal movement guide 9 is parallel to the tapered portion 6 of the drum 7 when viewed from above, and the screw shaft 20
A diagonal movement motor 2 is provided with an encoder 21 that is rotatably horizontally mounted parallel to the longitudinal direction of the diagonal movement guide 19 and is capable of transmitting a predetermined number of pulses to the screw shaft 20.
2 are connected.

Reference numeral 23 denotes a reed mounting base, and the reed mounting base 23 is mounted so as to be movable in the longitudinal direction of the oblique movement guide 19, and the screw shaft 20
The rotation of the diagonal movement motor 22 causes the movement in the longitudinal direction.

Reference numeral 24 denotes a reed that is attached to the reed mounting base 23, and is rotatable about the vertical axis and detachably attached.

Reference numeral 25 denotes a thread guide roll, and the thread guide roll 25 is disposed at a front position on the reed mount 23 (below the running path of the warp threads W! JL side) and parallel to the drum shaft 3. One end is rotatably attached to a support 26 erected from a reed mount 23.

27 is a cut mark device, and the cut mark device 2
7, a spray part 28 for spraying paint by an appropriate mechanism is disposed on the reed mount 23, which is in the travel path of the warp threads W.

Reference numeral 29 denotes a yarn length detection device for detecting the yarn length of the warp yarns W. The yarn length detection device 29 includes a touch roll 31 in contact with the warp yarns W at the tip of an encoder 30 capable of emitting a predetermined number of pulses.
A guide roll 32.32a is arranged below so that the warp threads W are in contact with the outer periphery of the tuffy roll 31, and a guide roll 32.32a is arranged in the travel path of the warp threads W via a bracket 33. is a computer such as a sequencer built into the main body 1 of the drum machine, and the computer 34 is connected to a host computer 35 installed outside (in an office, etc.), and receives various data input to the host computer 35, in detail. The data for each item of the warping instructions shown in FIGS. 5 and 6 can be manually input into a data memory (not shown) of the computer 34.

The computer 34 also includes the above-mentioned encoder 17,
A lateral movement motor 18 and a drum rotation motor 8 are connected via a servo drive section 36.36a, and an encoder 13.30 is connected to a counter section (not shown).

Reference numeral 37 denotes a ratio synchronizer, and the ratio synchronizer 37 is connected to the computer 34 and the encoder 13a, as well as to an NC control section 38 which is connected to the computer 34L.

Further, an encoder 21 and a diagonal column movement motor 22 are connected to the NC control section 38 via a servo drive section 39, as well as an operation switch (not shown), a positioning sensor (not shown), and the like.

Next, to explain the synchronous control device for a drum machine according to the present invention, first, the drum 7 is rotated a predetermined number of times at m shown in FIG. JET is input into the host computer 35, and data on each item of the warping instructions shown in FIGS. 5 and 6 are input into the host computer 35.

Next, each data input to the host computer 35 is input to the computer 34, and a large number of warp yarns W pulled out from a creel (not shown) are tied to the drum 7 via the reed 24 and the yarn guide roll 25. , and the guide rolls 32 and 32a are adjusted so that several (fixed number) of the warp threads W are in contact with the outer periphery of the tuff roll 31 of the encoder 30 at approximately 180 degrees, and the preparation for winding is completed. be.

When winding the yarn, the computer 34 calculates the feed amount of the reed 24 per drum rotation based on the measured yarn NT, and then drives the drum rotation motor 8 via the servo drive section 36a to 7, the rotation speed of the drum rotation motor 8 is detected by the encoder 13a, and this detected value is input to the ratio synchronizer 37, and the computer 34
The synchronization ratio (MAX 99.9999%) manually entered is processed and output as a synchronization pulse train from the ratio synchronizer 37 to the NC control section 38, and based on the synchronization pulse train, the servo drive section 39 performs a tilt control. The column movement motor 22 is synchronously driven to rotate the screw shaft 20, and the reed mount 23, which is screwed onto the screw shaft 20, is moved along the diagonal movement guide 19 in the elongated direction (parallel to the tapered part 6 of the drum 7). By moving the reed 24 at the above-mentioned feed amount, the warp threads W0) wound around the drum 7 are sequentially wound so that the cross-sectional shape is a parallelogram.

In addition, in this winding state, the length of the warp W is measured by the encoder 30, the measured value is read every clock pulse of the computer 34, and the difference in the thread length between the pulses is calculated. The yarn speed (Yang speed) is calculated based on the yarn length difference and the clock pulse time, and is compared with the set system speed input to the computer 34 to control the drum rotation speed to maintain a constant speed.

In addition, when the machine is stopped, the accumulated yarn length of the warp yarn W measured by the encoder 30 is sequentially stored in the computer 34, so that the set warping length (or the yarn for each turn) input to the computer 34 is stored in sequence. The cumulative yarn length is subtracted from the yarn length), and the rotational speed of the drum 7 is controlled to decelerate and stop at a constant rate until the subtracted value becomes zero, thereby completing the initial section warping.

In addition, when applying cut marks according to the number of counters and yarn length, repeat the start and stop of the warp for each counter as described above to reach the set warping length. The paint is applied to a predetermined number of warp threads W from the spray part 28 of the two-kaft mark device 27.

In addition, in warping the next section, the computer 34 drives the diagonal column movement motor 22 via the servo drive unit 39 to rotate the screw shaft 20 using the lateral movement value input from the host computer 35, thereby rotating the screw shaft 20. The reed mounting base 23 screwed onto the shaft 20 is moved along the diagonal movement guide 19 to the origin position, and the reed 24 is thereby moved to the diagonal column movement origin, and the reed 24 is moved to the diagonal column movement origin via the servo drive unit 36 for lateral movement. The motor 18 is driven to rotate the screw shaft 16, and the lateral movement table 15 to which the screw shaft 16 is screwed is moved along the lateral movement guide 14 to the origin position of the next section warping, that is, the computer 34.
The warp is moved to the position set by the manual lateral shift v1 value and the lateral shift adjustment value according to the type of warp W, and then the initial section is warped and the set warping length is determined by the recorded rotational speed of the drum 7. The warping of the next section is completed so that the warping length is the same.

Also, if the cross-sectional shape of the wound warp W does not fit into a parallelogram due to some influence during warping of the initial section, the feed amount should be changed during warping to correct it. By storing such correction values and the like in the computer 34, it is also possible to control with the same data when warping the next section.

〔Effect of the invention〕

In short, the present invention provides ratio synchronization in which a pulse from an encoder 13a that detects the drum rotation speed and a synchronization ratio arbitrarily set from a computer 34 are processed in a drum machine that winds a large number of warp threads W around a drum 7. Device 3
7, and the ratio synchronization device 37 controls the ratio synchronization of the diagonal column movement motor 22 that moves the reed 24 and the drum rotation motor 8, so that the movement of the reed 24 is optimal for the type and count of the warp threads W at that time. This can be done by inputting an arbitrary synchronization ratio into the computer 34, so that
The operability has been improved, and by eliminating the taper angle adjustment work required in the conventional combination of a stepped transmission and a portion of the variable taper, workability has been significantly improved, and the drum taper adjustment has been improved. Its practical effects are enormous, such as being able to simplify the structure by fixing parts.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, and FIG. 1 is a control circuit block diagram of a synchronous control device in a drum machine main body according to the present invention, and FIG. 2 is a partially omitted plan view of the drum machine main body.
FIG. 3 is a sectional view taken along the line A-A in FIG. 2, FIG. 4 is a plan view showing an actually measured yarn layer, and FIGS. 5 and 6 are explanatory diagrams of warping instructions. 7 drums 8 drum rotation motor 13a encoder 22 diagonal movement motor 24 reed
34 computers 37 ratio synchronizers or more

Claims (1)

[Claims] A drum machine that winds a large number of warp yarns around a drum is equipped with a ratio synchronizer that processes the detected value from an encoder that detects the drum rotation speed and a synchronization ratio arbitrarily set from a computer. A synchronous control device for a drum machine, characterized in that a diagonal movement motor for moving a reed and a drum rotation motor are controlled in ratio synchronization.