JPS59168138A - Apparatus for controlling roving winding tension in roving machine - Google Patents

Abstract

PURPOSE:The titled apparatus, capable of moving and adjusting a belt shifter according to the tension fluctuation between front rolls and the flyer top in spinnning rovings, keeping the roving tension at a proper value, and spinning the rovings of uniform weight. CONSTITUTION:An apparatus capable of sensing the tension conditions of a roving (R) between front rolls 1 and the flyer top (2a) through a set of three optical fibers 25 (ST for high tension, SM for moderate tension and SB for low tension) with a light projecting and receiving device 24, sampling signals input from the light projecting and receiving device 24 in a microcomputer (M), sending signals for driving a reverse motor 21 according to criteria in an arithmetic circuit, revolving the motor 21 in the forward or reverse direction through an amplifier 27 and output relay 28, moving a belt shifter 19 in such a direction as to accelerate the rotation of a bottom cone drum 7 if the motor 21 is revolved in the forward direction, and moving the belt shifter 19 in such a direction as to decelerate the bottom cone drum 7 on the reverse rotation of the motor 21.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a roving winding tension control device for a roving frame.

In the conventional hobbin reed type roving frame, the roving is sent out at a constant speed from the flon roller, and the roving is twisted by the difference in rotation between the flyer, which rotates at a constant speed, and the bobbin, which rotates at a higher speed. The winding condition of the roving yarn is influenced by the tension state of the running roving yarn between the front roller and the flyer top. In other words, if the braided yarn is loose in its progress, the roving can be wound smoothly onto the bobbin, but if there is a fluctuation in the tension of the roving, the tit of the wound roving will fluctuate. This causes Koai et al. On the other hand, there is a known system that uses a single-force cone drum to adjust the rotational speed of the bobbin and adjust the tension of the roving thread E"fC. However,
Spinning hawking: The number of layers of roving wound on the bobbin and the rate of increase in the hobbin diameter change depending on the initial conditions such as the catching size, rotating ridges of the flyer, and number of twists. In the method of using all the cone drums, it is difficult to adjust the machine so that the winding tension is constant from the start of winding to a full tube under all spinning conditions.

For this reason, many proposals have been made to keep the roving tension constant. For example, Jikko 1 published on March 25, 1978.
] d52-1337 June bulletin or 1978] February 12
In Japanese Patent Publication No. 52-48652, the entire movement of the cam from Bell I to the shifter is conveniently changed, and the shape of the concave line of the cam is changed in response to changes in the spinning conditions. A roving tension 411j device having a variable and inverted configuration has been proposed.

This is done by checking the tension of the roving between the front roller and the flyer top at several points from the start of hobbin winding to the full roll while spinning a roll under the established initial conditions. It requires a complete set of bucket adjustment equipment, and is not completely complete as it is very simple and requires several checkpoints. Also, Publication No. 4338 of 1975 released on the 7th of 1975 and Special Publication No. 56-229 of 1975 published on May 28, 1981.
No. 64 proposes a device in which the total amount of movement of a belt shifter is adjusted by a motor controlled and driven by a program control device. These devices are easier to set up than devices that use cams, and there are many checkpoints starting from 1. It is necessary to calculate the curve of power Bell I/displacement. Further, there is a problem in that the condition of the roving during the spinning test and the condition of the roving during operation are not necessarily the same.

On the other hand, the special public notice No. 51-225, announced on July 1, 1975,
Publication No. 32 discloses that when the roving yarn between the front roller and the flyer top has slackened by more than a certain weight, it is detected by a phototube, and the belt shifter is fully moved by a certain amount in the direction to correct the slack, and the hobbin rotation is adjusted. Methods have been proposed to control the number.

With this method, it is not necessary to conduct an initial test for each valley spinning condition in advance, but if the tension of the braided yarn increases,
There is a disadvantage that it cannot be detected and corrected.

Therefore, in actual production, the operator monitors the entire roving tension and adjusts the operating conditions so as to maintain a normal overall tension.

Purpose This invention was made in order to solve the above-mentioned conventional problems, and its purpose is to monitor the tension state of the roving yarn between the Freon 1 roller and the flyer top during spinning on behalf of the operator. To provide a roving winding tension control device for a roving machine which automatically controls the movement of a heald shifter in response to fluctuations in tension and maintains an appropriate roving tension at all times.

Structure of the Invention In order to achieve the above object, in this invention, the bell I shifter can be moved MfJ+ regardless of the increase in the roving l- wound around the hobbin.
At the same time, a 34 m long Koki type sensor was installed on each Zumbrink roving thread to determine the tension state of the yarn (between the flon roller and the flyer top). They are arranged at positions suitable for detecting the unique trough-like roving of tension, thorn 11 tension, and low tension, and the output signals of each of the sensors are sent to the impeller 1, and the tension state of the roving is determined based on the signal. A microcomputer is provided which determines whether the tension is corrected or not, and if the tension is not appropriate, sends a signal to activate the hebel shifter moving machine.

Embodiment 1 An embodiment embodying the present invention will be described below with reference to all the drawings. As shown in Fig. 1, the front roller 1, flyer 2, and top cone drum 3 are driven by a main motor 4 located on the same plate through rotation transmission means (indicated by thick solid lines) such as a gear train and a timing bell I. and bobbin 5 has an opening
The rotation from the E motor 4 and the rotation from the photomone drum 1 which is rotated at variable speed by the tube cone drum 3 via the bells 1 to 6 are combined and transmitted by the differential mechanism 8. It has become.

The long rack 9 is slidably installed in a groove 10 of a guide portion 10 extending parallel to the 11i111 core wires of the front 11'' cone drums 3 and 7. As is well known, the long rack 9 is rotated once by lowering the weight 11.
1 wide upright shaft 12" 2nd pinion 13
A gear 17 is fixed to the lower end of the upright shaft 12 and meshes with a gear 16 fixed to the heel of a ratchet I wheel 15, which is regularly rotated by a predetermined amount when the hobbin rail 14 is switched up and down. has been done. Therefore, every time the roving thread wound on the hobbin 5 moves up and down, that is, when the hobbin rail 14 is switched up and down, the pinion 13 is rotated by a certain amount, and the long rack 9 is moved at a fixed pitch in the direction shown in FIG. .

A support bracket I/18 is slidably supported on the guide member 10 on the opposite side (left side in FIG. 1) of the uplie 1 and hexagons 1 to 12 with respect to the BjJ belt 6. is connected to the support bracket 18 via a connecting member 20 so as to be able to move integrally therewith. A reversible motor 21 is fixed on the upper part of the holding bracket, and a feed screw 22 is connected to a drive H of the reversible motor 21. On the other hand, on one side of the long rack 9, there is a bracket l- having a female screw portion 23ai that screws with the feed screw 22.
23 is fixed so as to correspond to approximately the center of the feed screw 22 at the beginning of winding the roving.

Therefore, when the feed screw 22 rotates, the long rack 9
The support bracket 18 moves along the guide member 10 while being held in a predetermined position, and the distance between the belt shifter 19 and the bracket 23 changes. In the apparatus of this embodiment, the belt shifter 19 moves in the right direction in FIG. The rotation is meant to move in the direction that brings you money. In addition, the long rack 9 is equipped with 34-piece limit switches JJSI, L82, and L88 to detect the positional relationship between the belt shifter 19 and the long rack 9.
are fixed at a predetermined spacing, and the support brackets 1 to 18 have bells!・Dog D1. which moves integrally with the shifter 19 and can be fitted with the front JJSI, LS2°LS8. D2. I) s is fixed.

A photoelectric sensor for fully determining the tension state of the roving yarn I between the front roller 1 and the flyer top 2a is composed of a light emitting/receiving device 24 and an optical fiber 25 that guides the emitting and receiving light. As shown in FIG. 2, the optical fiber has two core fibers 26 that completely constitute a path for guiding the reflected light from the roving R to the light projecting and receiving device 24. 25 is for tension detection→) A set of three ST for detecting a high tension state, SM for detecting an appropriate tension state, and S B for detecting a low tension state are provided for one spring roving R, and the tip of the multi-optical fiber 25 is are arranged at positions suitable for detecting the roving R in each state. The reason for using the optical fiber 25 that guides all of the reflected infrared light instead of a normal phototube is because the diameter of the roving is as small as 2 to 3 wires, and because the position of the roving changes due to fluctuations in the length of the roving. This is because the braided threads cannot be detected accurately by the embedded light source due to their small size. ='l Recording light receiving device 2
4 is a full signal amplification of the reflected light, and if there is a braided thread 1't, it is L.
If there is no roving B at the level, the microcomputer M (abbreviated as Ishun microcomputer) is set to have VC input. Incidentally, two to three sets of optical fibers 25 as the sensors are installed in each revolving frame.

Furon 1-roller 1 and flyer toff 2a11 roving J
(When the roving is in a high tension state, the roving 1t runs in a nearly straight line as shown in FIG.
Only the roving thread is detected and an L level signal is emitted. When the roving hole is in a straightening tension state, the roving thread R is slightly loosened and is placed in a %H centered state with the cutting optical fiber SM in a straightening tension state, but it also vibrates, so the infrared rays are emitted from the light emitting/receiving device 24. When projection is performed, the optical fiber S for determining the appropriate tension state
In addition to M, the optical fiber ST for tension state detection is also roving R2.
It detects and outputs an L level signal. When the roving thread (■) is in a low tension state and the light emitting/receiving device 247J emits infrared light, all the optical fibers ST, 8M are
, SB detects all the roving threads and sends an L level signal.

Therefore, the determination of the tension state of the roving holes is as shown in the table.

The microcomputer M samples the signal input from the light emitting/receiving device 24 according to a preset data sampling program, and determines whether the average of the input signals from each optical fiber 8'I', SM, and SB is L or H using an arithmetic circuit. and each optical fiber 8T, 8M according to the above judgment conditions.
, If all SH signals are present, a signal is issued to drive the reversible motor 21 in forward rotation, and if only the high tension state detection optical fiber ST is L, a signal is output to drive the reversible motor 21 in reverse. This signal current is amplified by an amplifier 27 and passed through an output relay 28 to cause the reversible motor 21 to rotate forward or reverse.

Data sampling for determining the tension state of the roving R by the microcomputer M is performed for a certain data sampling time from the time when the rotation stability period T1 of the hobbin rail 14 has passed after the rail turn of the hobbin rail 14, as shown in Fig. 4. The data sampling is performed a predetermined number of times (approximately 4 to 10 times) for each T2 at a predetermined data sampling interval Tag.Next, the N sampling data is calculated by the calculation circuit of the microcomputer M, and the roving yarn R is
The tension state of the belt is fully determined, the reversible motor 21 is driven to a predetermined belt shifter position during the correct period T4, and then after a predetermined control period T5 has elapsed, data sampling and belt shifter position correction are repeated in the same manner as above. The sampling times *N and the trough time 2 periods T l, T 2
, T s , 'II-' 4, 'l' 5
can be set using an external digital switch (3 decimal digits).

Next, the operation of the device constructed as described in rJl will be explained. As shown in FIG. 1, the operation of the roving frame is started with the central dock D2 engaged with the two limit switches LS+ and LS2. The ratchet wheel 15 is rotated regularly by a predetermined amount each time the hobbin rail 14 is switched from up to 1, and the upright shaft l-
12 rotates together with the pinion 13, and the long rack 9 is moved in the pressure direction shown in FIG. As a result, guide member 1
The support bracket 18 supported on the cone drum 3. Let S= to the left of the bell l-6'i on γ.

? The sensor M samples data for determining the tension of the roving R according to a preset program, and if the tension is higher than the appropriate tension, outputs a signal to reverse the reversible motor 21. When switching the hobbin rail 14 up and down Otherwise, the long rack 9 is held in a fixed state, so when the reversible motor 21 reverses, the feed screw 220 rotates, and the support bracket l-18 moves together with the -nJ reverse motor 21 in the pressure direction shown in Figure 1. The heald shifter 19 is also moved by the same amount, and the belt 6 is moved in the direction where the roving R is lowered, and the tension of the roving R is adjusted to a state of τL.)
(1 yarn 1) If the tension is lower than the appropriate tension, the reversible motor 21 is turned in the correct direction, and the bell! - The shifter 19 is moved in the direction in which the tension of the roving R decreases, that is, in the right direction in FIG. The data summing by the microcomputer M occurs not only once every time the hobbin rail 14 is switched up and down, but also during the ascent or descent. It is stipulated in

If the feed screw 22 is rotated more than a certain amount in a certain direction in order to adjust the tension of the roving R, this will cause a problem in the threaded state of the feed screw 22 and the female threaded portion 23a of the bracket 23. , In this device, three limit switches fixed to a long rack are used. LS2. LSg and dock J that moves integrally with shifter 19 to bell 1)
1. ．． 1) 2, IJIJ a drives the reversible motor 21 to move the bell shifter 19 within a predetermined distance 1 from the bracket 23. Fifth
As shown in (+-1) and (OL (d) in the figure, when the central dog D2 is engaged with the limit switch L1 or L2 or the limit switch 111d, the reversible motor 21 can be moved in either the forward or reverse direction. Although it is rotated even when mowing, Fig. 5 (a,
), dog D2 is the limit switch L S
In the state in which the dog I and the dog 1) 3 are respectively engaged with the limit switch LSa, the reversible motor 21 is driven in the forward rotation direction, but is driven in the reverse direction, that is, the dog Dx
,I)z, ,Dg is not driven in the direction of movement to the left. Further, as shown in FIG. 5(e), in the state in which the dog D1 is engaged with the limit I switch LSI and the dog D2 is engaged with the limit 1 switch LS2゜LSg, the reversible motor 21 is Normal rotation direction, that is, dock D1°D2. I) Direction in which a moves to the right VC(l-
1. Not driven. Dog D2 has no role to play in determining the positional relationship at the start of operation, and at the start of operation, the position shown in Figure 5 (
0), the dog D2 is a limit switch LSI.
, LS2 is set to the engaged state.

Example 2 Next, another embodiment will be described with reference to FIG.

In the apparatus of this embodiment, the belt shifter moving mechanism is different from that of the appended embodiments. That is, in this embodiment, the lower ends of the upright 1 to shaft I/12 are connected to the differential gear mechanism 29.
The belt shifter 19 is directly fixed to the long rack 9. The differential gear mechanism 29 includes a bevel gear 3 fixed to the lower end of the solid shaft 1-12.
0, another bevel gear 31 that meshes with this bevel gear, and a bevel gear 32 that roughly meshes with the bevel gear 31. The bevel gear 32 is fixed to the gear 17 driven by the ratchet wheel 15. The bevel gear 31 has teeth 35 that mesh with a gear 34 driven by the reversible motor 21, and the bevel gear 31 has teeth 35 that mesh with a gear 34 driven by the reversible motor 21.
It is supported by a rotary body 36 that rotates about 33 as an axis.

Therefore, in this device, when the hobbin rail 14 is switched up and down, the ratchet wheel 15 is rotated regularly by a predetermined amount, and the gears 16, 17, bevel teeth θ, 32, 31, 31-1. The tears shaft stock 9 is moved to the left in FIG. 6, and the heald shifter 19 is also moved together. In addition, when the belt shifter is moved by the rotation of the reversible motor 21, the ratchet wheel 15 is in a fixed state, so when the gear 34 is rotated by the rotation of the reversible motor 21, the bevel gear 31 is upright together with the rotating body 36. Shirt I・12 and illil
[I 3 Rotates the bevel gear 30 at the same time as it revolves around 3. As a result, the sibinion 13 is rotated and the movement of the bevel tilter 19 is adjusted integrally with the long rack 9.

Note that the present invention is not limited to the embodiments described in mjj, and in embodiment 1, the reversible motor 21 is fixed to the long rack 9, and the bracket 23 having the female thread sound VS' that is screwed with the feed screw 22 is attached to the guide section. The bell I shifter 19 is slidably supported on the bracket 23.
It is also possible to arbitrarily change the shape, structure, etc. of each part without departing from the spirit of the invention, such as configuring the parts to be connected.

Effects As detailed above, according to the present invention, during spinning, the tension state of the roving between the furon 1 roller and the flyer 1 tube is monitored on behalf of all workers, and the heald shifter is adjusted according to changes in tension. Since the roving is automatically controlled to maintain the roving tension, it has the excellent effect of being able to spin all the rovings in a uniform braid even if the initial conditions change. .

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of an embodiment fully embodying this defense;
Figure 2 is a front view of the main part showing the relationship between the roving and the sensor, Figure 3 is an enlarged cross-sectional view of the main part of the optical fiber, Figure 4 is a diagram showing the timing of the data printer of the microcomputer, and Figure 5 is the dog. FIG. 6 is a front view of a partially broken main part of another embodiment. Front roller 1, flyer I/tube 2a, I-tube. Teten drum 3, hobbin 5, held 6, e-mukone drum 7, long rack 9, kite member 10, Bunjyo Flake +-iB, nol 1 ~ shifter 19, y4 Yurei'A bow 20, for i-side motor 21, feed screw 22, fructs I~23, female screw part 23a, light emitting/receiving device 24, optical fiber 25, difference TJvJ gear foam 2g, roving J (,
Microcomputer M. Patent applicant: Toyoda Automatic Loom Works, Ltd. Representative: Patent attorney On: 1) Hiroshi Award-254-O

Claims (1)

[Scope of Claims] Every time the number of roving threads wound on the helmet thread between a pair of cone drums increases, the roving thread is fully opened and moved in conjunction with a long rack that is moved intermittently at a constant pitch. In a roving machine equipped with a speed change mechanism that changes the rotational speed of a bottom cone drum by sliding with a heald shifter that is provided, the belt shifter can move the belt shifter independently of an increase in the roving yarn J-. In addition, in order to determine the tension state of the roving between the front roller and the flyer top, a set of 3 photoelectric sensors are installed for each sunblink roving for tension simulation.
The knitting yarn in the trough state of positive tension and low tension is placed at a favorable position for the roving, and the output signal of the penetrating valley sensor is input, and based on the signal, it is determined whether the tension state of the roving is appropriate. If the tension is not appropriate, move the belt shifter I]L! A roving winding tension control device for a roving machine, characterized in that it is provided with a microcomputer that fully operates the cage. 2
A roving winding tension control device for a roving frame according to claim 1, wherein the belt shifter moving mechanism slides on a long rack. A support bracket I/
A reversible motor is fixed on the support bracket and has a feed screw connected to its first drive cap, and a bracket is fixed to the long rack and has a female threaded portion that engages with the feed screw. The roving winding tension control device for a roving frame according to claim 1 or 2, characterized in that the device is awned. 4. The heald shifter moving mechanism is a gear system that moves the long rack by a constant pitch each time the number of rovings wound on the bohin increases. A roving winding tension control device for a roving frame according to claim 1 or 2, characterized in that the device comprises a motor.