JP2745040B2 - Sliver cutting method in spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a can-exchanging device which uses a can exchange device after cutting a sliver connected to a coiler wheel and a full can of the machine when the delivery berry can is full and the machine is stopped. The present invention relates to a method for cutting a sliver in a spinning machine configured to exchange a full can and a subsequent empty can.

[0002]

2. Description of the Related Art In a spinning machine such as a drawing machine, an empty can is arranged at a coiling position below a coiler wheel, and when the empty sliver is filled with spun slivers, the spinning machine is operated. After the stop, the full can and the subsequent empty can are automatically exchanged by the can exchange device,
In many cases, the empty can is configured to accommodate the sliver again. In such a spinning machine, it is necessary to cut a sliver connected between the full can and the sliver discharge hole of the coiler wheel when exchanging the full can and the empty can. Various sliver cutting devices for cutting the sliver when exchanging the can are disclosed.

[0003] In this sliver cutting device, after stopping the operation of the spinning machine, a full can is moved by a can exchange device driven separately from the machine base. Configuration (for example,
Japanese Utility Model Publication No. Sho 61-3892) or a sliver cutting tool driven separately from the machine stand (for example, a comb-shaped piece disclosed in Japanese Patent Application Laid-Open No. 63-92737; Some slivers are cut by a cutting device provided with a pressing piece that works in conjunction with a can exchange device.

The above sliver cutting devices are arranged above the coiler wheel because all of the sliver cutting devices are configured to stop the machine base and then drive the can exchange device to move the full can. Between a pair of calender rollers and a sliver cutter, or
Tension may be generated in the sliver between the corner of the sliver discharge hole of the coiler wheel and the like, and the sliver may be cut between the pair of calender rollers and the full can. In this case, the sliver may be clogged in the tube of the coiler wheel at the next spinning, and spinning may not be possible.

In view of the above, the applicant of the present application has disclosed in Japanese Patent Application No. Hei 3-202828 that the sliver is not cut off in a coiler wheel or the like by applying tension to the sliver, and that the sliver can be cut at a fixed position. Technology presented. In this technology, after the delivery berry can is full, the full can is moved forward of the machine by a predetermined distance, and then a pair of cutting action tools are pressed against the lower surface of the coiler wheel, and the pair of cutting action tools is pressed. The sliver is sandwiched between the cutting tool and the lower surface of the coiler wheel, and the cutting tool on the full can side is moved in that direction, so that the sliver is cut as if pulling out between the pair of cutting tools. Is what you do. In this technique, the length of the sliver that hangs on the surrounding wall of the can after cutting is
There is a disadvantage that the sliver automatic splicing device described later cannot be used because it must be shortened.

In general, when the sliver in the supply can is consumed in the next process of transporting the full can and supplying it to the supply can, the sliver end of the sliver and the sliver of another full can that has been transported are A sliver automatic splicing device that grips the starting end of each sliver with a gripping tool and splices both slivers has recently been adopted. In this automatic sliver splicing device, the length of the sliver hanging from the peripheral wall of the succeeding full can has a certain length or more so that both sliver ends can be easily gripped by the gripping tool as described above. Is required.

Further, according to the sliver cutting device disclosed in Japanese Patent Application Laid-Open No. 63-92737, after the sliver is cut, the length of the sliver hanging down on the peripheral wall of the full can can be lengthened. The cutting point is
The sliver connected between the full can and the coiler wheel is longer in front of the machine stand and is a part off the machine stand. The sliver may be cut due to the tension between the can and the sliver, which is not a perfect technique for cutting the sliver.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a spinning machine for spinning a sliver, wherein the sliver connected between the full can and the coiler wheel has a corner portion of a sliver discharge hole of the coiler wheel due to its own tension. Alternatively, it is an object of the present invention to prevent the sliver from being cut inside the tube, and to secure a length of the sliver that hangs outside the peripheral wall of the full can after the cutting to a certain length or more.

[0009]

Means for Solving the Problems In order to solve this problem, a first means adopted by the present invention is to stop the machine base by full delivery berry cans, and to set a space between the coiler wheel and the full can. After cutting a series of slivers, when cutting a sliver in a spinning machine configured to exchange the full can and a subsequent empty can by a can exchange device, the machine is restarted after the machine is stopped. ,
While spinning the coiler wheel at a low speed by the set number of revolutions and spinning the sliver, the can exchange unit moves the full can to the front of the machine by a set distance to move the full can and the rotation of the coiler wheel. By stopping both, the sliver does not hang down between the full can and the coiler wheel, and is connected without tension, and in this state, a pair of cutting action tools are pressed against the lower surface of the coiler wheel, The sliver is cut by moving the cutting tool on the full can side in that direction. Further, the second means is such that the sliver discharge hole of the coiler wheel is located on the downstream side with respect to the conveying direction of the full can, the machine is stopped at a fixed position, and the can exchange device is used. After moving the full can by a predetermined distance and stopping it, the machine is restarted, and the coiler wheel is rotated and stopped until the sliver discharge hole is located on the upstream side with respect to the transport direction. After that, by moving the full can slightly forward again by the can exchange device again, the sliver is connected between the full can and the coiler wheel without drooping, and without tension, in the same manner as above. To cut the sliver.

[0010]

According to any of the first and second means, the sliver connected between the full can and the sliver discharge hole of the coiler wheel does not hang down and is in a tensionless state. Therefore, unlike the conventional sliver cutting method, the sliver is not cut at the corner of the sliver discharge hole of the coiler wheel or in the tube thereof due to the tension applied to the sliver itself.
In addition, since the length of the sliver connected between the full can and the sliver discharge hole of the coiler wheel can be lengthened,
After the cutting, the length of the sliver hanging outside the peripheral wall of the full can becomes longer.

[0011]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples. FIG. 1 shows a coiler device A mounted on a drawing machine.
FIG. 2 is a side view in a different state, FIG. 3 is an enlarged sectional view of the coiler device A, and FIG. 4 is a schematic plan view of the coiler device A. It is. In the following description, the symbol "C" is generally used to indicate cans, and "Ca" and "Cb" are used when it is necessary to distinguish between full and empty cans. Use the sign. As shown in FIG. 1, a can exchange device B is disposed below the coiler device A. In the coiler device A, as shown in FIG. 3, a bearing box 2 is integrally attached to an upper end portion of a central portion of the roller beam 1, and a timing pulley 4 is integrally attached to an upper end portion of the coiler wheel 3, The timing pulley 4 is supported by the roller beam 1 via a bearing 5 fitted in the bearing box 2, so that the coiler wheel 3 is rotatably supported by the roller beam 1. A timing belt (both not shown) is mounted between a timing pulley 4 integrally attached to the upper end portion of the coiler wheel 3 and another driving timing pulley, and this driving timing pulley is mainly used. It rotates the motor M _1, and rotate the coiler wheel 3. The coiler wheel 3 is provided with a tube 6 through which the sliver S passes, and the opening at the upper end of the tube 6 is concentric with the rotation center 7 of the coiler wheel 3 and the sliver inlet hole 8 is provided.
And an opening at the lower end thereof is arranged on the outer peripheral portion of the lower surface 3 a of the coiler wheel 3, and forms a sliver discharge hole 9. Immediately above the sliver inflow hole 8 which is an opening at the upper end of the tube 6, a pair of calender rollers 11 for compressing the spun sliver S and feeding the sliver S into the tube 6 is disposed (see FIG. 1). ).

A detection plate 12 is attached to the outside of the lower end of the tube 6 attached to the coiler wheel 3.
A proximity switch 13 is attached to a portion facing 2. Empty can Cb in sliver S is housed after a Mankan, a coiler wheel 3 by the main motor M ₁ by low speed, when the proximity switch 13 detects the detection plate 12, and stops the main motor M ₁ Thus, the rotation of the coiler wheel 3 is stopped, and thereby the stop position of the sliver discharge hole 9 is determined.

A bottom plate 14 is attached to the lower surface of the roller beam 1.
Between the lower surface of the coiler wheel 3 and
A slight (1 to 2 mm) step is formed so that the lower surface of the coiler wheel 3 is located lower. To accommodate the spun sliver S while coiling it in the empty can Cb, the following procedure is performed. As shown in FIG. 1, a sliver tray 15 is provided in the empty can Cb, and the sliver tray 15 is moved upward by a restoring force of a spring (not shown) disposed below the sliver tray. Being energized. In the empty state where the sliver S is not accommodated, the sliver tray 15 is located at a position slightly higher than the upper end of the peripheral wall of the empty can Cb. , The sliver tray 15 is brought into elastic contact with the lower surface 3a of the coiler wheel 3 by the restoring force of the spring described above (see FIG. 2). While the coiler wheel 3 is rotating, the sliver S discharged from the sliver discharge hole 9 through the tube 6 becomes the sliver tray 1 of the empty can Cb.
5 while being coiled, the sliver pan 15 is pushed down against the restoring force of the spring and the sliver S
Is to be accommodated.

A sliver cutting device D proposed by the present applicant in Japanese Patent Application No. 3-102028 is mounted on a bottom plate 14 mounted on the lower surface of the roller beam 1. The sliver cutting device D includes a pair of cutting action tools 16a and 16b. When the pair of cutting action tools 16a and 16b are caused to move horizontally from the state of being vertically folded (FIGS. 4 to 7 show the folded state, and FIGS. 2, 8 and 9 show, The raised state is shown), and the cutting action tool 16a which presses the lower surface 3a of the coiler wheel 3 and is disposed on the unloading side of the full can Ca transports the full can Ca. It is movable along the direction P.

As shown in FIG. 1, the can exchange device B has a chain gear 18 attached to both ends of a drive shaft 17 and a chain gear 21 attached to both ends of a driven shaft 19, respectively. The endless chains 22 are respectively mounted between the chain gears 18 and 21 which are arranged one behind the other, and thus a pair of the endless chains 22 are provided at predetermined intervals along the direction orthogonal to the conveying direction P of the can C. In this configuration, a plurality of carrier bars 23 are attached at predetermined intervals between endless chains 22. Then, when the drive shaft 17 is rotated by the can exchange motor M ₂ to run around the pair of endless chains 22, the carrier bar 23 attached therebetween presses the rear part of the can C, and The cans C are transported. Further, in the present invention, after the delivery berry can is full, and before the sliver S connected between the full can Ca and the sliver discharge hole 9 of the coiler wheel 3 is cut, the sliver S is fully filled. The can sensor Ca is moved forward by a predetermined distance and stopped, and a stop sensor 2 for determining a stop position of the full can Ca is provided.
4 is disposed in front of the roller beam 1 (see FIG. 7).

In the present invention, after the delivery berry can is full, before the sliver S is cut, the coiler wheel 3 is compared with the normal operation in which the sliver S is housed while being coiled into the empty can Cb. it is necessary to operate at a significantly lower rotational speed, the main motor M ₁ for rotating the coiler wheel 3 is required to be variable speed motors. In this embodiment, as the main motor M _1, the speed change is easy, moreover although using variable speed inverter motor over a wide range, it is also possible to use such polar number conversion motor. When using this inverter motor for normal operation,
Operate the motor at a frequency of 60 Hz, and
0m / min constant speed operation.
When the motor is operated at the frequency of HZ to perform a low-speed operation of 200 m / min, and when the machine is to be inched at the time of trouble of the machine, the motor is operated at the frequency of 15 HZ and the motor is operated at a speed of 150 m / min. Low-speed operation can be performed. Further, in the present invention, since the machine base needs to be operated at an extremely low speed, the input device can input almost any frequency so that the motor can be operated at a low frequency of 5 to 10 HZ. .

FIG. 10 is a diagram showing the relationship between the spinning speed of the machine and the elapse of time. Referring to FIG. 10, a drawing machine having the coiler device A and the can exchange device B will be described. The cutting operation of the sliver S will be described. As shown in FIG. 1, the empty can Cb is carried into the coiling position below the coiler wheel 3 by the can exchanging device B, the main motor M ₁ is automatically activated.
For a predetermined time (T ₁ ) after the start of the motor M ₁ , the low-speed operation at the spinning speed of 200 m / min is performed so that the sliver S does not stick out from the sliver tray 15 in the empty can Cb. Then, the sliver S is placed on the tray 15 while being coiled. The above time (T ₁ )
After the elapse of the time, the machine performs a constant speed operation at a spinning speed of 600 m / min, and the sliver S having a predetermined length is moved to the empty can Cb.
It housed in it when it comes to Mankan and stop signal to the main motor M ₁ is sent, the machine base is stopped. The position of the sliver discharge hole 9 after the machine stand is stopped is arbitrary and not determined.

Therefore, after the machine stops, the set time (T
₂₎ after a lapse of [2 seconds], the main motor M ₁ is 5HZ
And the machine restarts at a spinning speed of 50 m / min.
When the detection plate 12 attached is detected, the main motor M ₁ is stopped immediately. For spinning speed is very low, the immediate stop of the main motor M _1, is reliably stopped in the set position the sliver discharge hole 9 of the coiler wheel 3. In the present embodiment, as shown in FIG.
The sliver discharge hole 9 is stopped at the most upstream side with respect to the transport direction P of the full can Ca.

[0019] As described above, when stopping the sliver discharge holes 9 in the setting position, and actuated can changing device B by the activation of the can changing motor M _2, full can Ca
If, at the same time the exchange of the subsequent empty can Cb is started, the main motor M ₁ is restarted at a frequency of 5 Hz, the machine base is restarted spinning speed of 50 m / min. Accordingly, the full can Ca moves forward of the machine frame while the sliver S is being discharged from the sliver discharge hole 9 of the coiler wheel 3. The stop sensor 24 arranged in front of the machine base
When full can Ca is detected by, stop the can changing motor M _2, can changing operation is stopped temporarily. In this way, the coiler wheel 3 makes two rotations and stops at the same position as before the start of rotation while the full can Ca moves to the front of the machine by the set distance and stops (first time by the proximity switch 13). Of the detection plate 12 is canceled, and the main motor M ₁ is detected at the time of the second detection.
Is controlled so that a stop signal is issued.) That is, since the coiler wheel 3 is slowly rotating and discharging the sliver from the sliver discharge hole 9 and moving the full can Ca, the state shown in FIGS. In the state shown, no tension is applied to the sliver S between the full can Ca and the sliver discharge hole 9. Since the sliver S in the above state is in a tensionless state, the sliver in the tube 6 is also in a tensionless state.
In addition, the moving distance of the cans Ca and the coiler wheel 3
The rotation speed is relatively determined so that the sliver S connected between the full can Ca and the sliver discharge hole 9 does not hang down on the lower surface 3a of the coiler wheel 3. Accordingly, the sliver S connected between the full can Ca and the sliver discharge hole 9 is formed on the lower surface 3 of the coiler wheel 3.
It is in a state where it does not droop greatly from a and no tension is applied.

In the above-described state, the sliver cutting device D is operated to move the pair of cutting action tools 16a and 16b from the state of being vertically folded as shown in a two-dot chain line in FIG. When raised and pressed against the lower surface 3a of the coiler wheel 3, a pair of cutting action tools 16
The non-tensioned sliver S is sandwiched between the a and 16b and the lower surface 3a of the coiler wheel 3. Thereafter, when the cutting action tool 16a on the side of the full can Ca is moved in that direction, as shown in a solid line in FIG. 2 and FIG. 9, the sliver S between the pair of cutting action tools 16a and 16b.
Is cut off so that it can be removed. After the cutting of the sliver S, the cutting action tools 16a and 16b are vertically folded and retracted from the lower surface 3a of the coiler wheel 3, and then the can exchange device B is operated to carry out the full can Ca from the machine stand. And the subsequent empty can Cb
Is carried into the coiling position of the machine stand, and the next spinning is performed.

In the present invention, it is possible to prevent tension from being applied to the sliver S connected between the full can Ca and the sliver discharge hole 9, so that the length of the sliver S between the above can be increased. As a result, as shown in FIG. 11, the length of the sliver S hanging down from the peripheral wall of the full can Ca carried out of the machine stand can be increased, and the sliver splicing by the automatic sliver splicing device becomes possible.

Next, another embodiment of the present invention will be described. The same parts as those in the above embodiment are denoted by the same reference numerals, and only the parts unique to this embodiment will be described. FIG.
In FIG. 15 to FIG. 15, the roller beam 1 is provided at a predetermined interval along the rotation direction of the coiler wheel 3 for two times.
Two proximity switches 13 a and 13 b are mounted opposite to the detection plate 12 mounted on the coiler wheel 3. In the present embodiment, the detection plate 12 attached to the coiler wheel 3 is arranged at a position shifted from the sliver discharge hole 9. Further, two stop sensors 24a and 24b are arranged at predetermined intervals along the transport direction P of the full case Ca.

FIG. 12 shows a state in which the detection plate 12 attached to the coiler wheel 3 is detected by the proximity switch 13b and the machine is first stopped at a fixed position, and the sliver discharge hole 9 of the coiler wheel 3 is Man Can C
It is arranged on the downstream side with respect to the transport direction P of FIG. In this state, while the machine stand is stopped, the full can Ca is carried out to the front of the machine by the operation of the can exchange device B, and when the arrival of the full can Ca is detected by the stop sensor 24a, the full can Ca becomes: Stop at that position (Fig. 13)
At the same time, by the detection signal of the stop sensor 24a,
The machine restarts and the coiler wheel 3 is sliver S
When the detection plate 12 attached thereto is detected by the proximity switch 13a, the rotation of the coiler wheel 3 stops (FIG. 14). In this state, the sliver discharge hole 9 of the coiler wheel 3 is
The full can C is located on the most upstream side (based on the full can Ca unloaded from the machine base) on the basis of the transport direction P of the full can Ca, and
sliver S connected between a and sliver discharge hole 9
, The lower surface 3 of the coiler wheel 3
Hanging on a. Thereafter, the can exchange device B is restarted and the full can Ca is moved until it is detected by the stop sensor 24b (FIG. 15).
The sliver S, which has continued to hang between the sliver discharge hole 9 and the sliver discharge hole 9, is pulled toward the full can Ca so that the sliver S does not hang down on the lower surface 3 a of the coiler wheel 3 and has no tension. In this state, a pair of cutting action tools 16a and 16
By b, the sliver S connected between the full can Ca and the sliver discharge hole 9 on the lower surface 3a of the coiler wheel 3 is cut, and thereafter the can exchange device B is operated to carry out the full can Ca.

[0024]

According to the present invention, the sliver can be connected without tension being applied to the sliver between the full can and the sliver discharge hole of the coiler wheel and without drooping. The sliver will not be cut at the corner of the discharge hole or in the tube of the coiler wheel. As a result, the sliver can be spun smoothly. In addition, since tension is not applied to the sliver connected between the full can and the sliver discharge hole, the length can be increased. In order to perform the cutting, the cut portion is constant, and therefore, the length of the sliver hanging down outside the peripheral wall of the full can can be secured by a predetermined length. As a result, the starting end of the sliver can be easily gripped by the sliver gripping tool, and sliver splicing by the automatic sliver splicing device becomes possible.

[Brief description of the drawings]

FIG. 1 is a side view of a coiler device A and a can exchange device B mounted on a drawing machine.

FIG. 2 is a side view of a different state.

FIG. 3 is an enlarged sectional view of the coiler device A;

FIG. 4 is a coiler device A immediately before the start of can exchange.
FIG. 7 is a schematic plan view showing a positional relationship between and a full case Ca.

FIG. 5 is a schematic plan view showing a positional relationship between the coiler device A and the full can Ca after the can exchange is started.

FIG. 6 is a schematic plan view showing a positional relationship between the coiler device A and the full can Ca after the can exchange is started.

FIG. 7 is a schematic plan view showing a positional relationship between the coiler device A and the full can Ca in a state where the can exchange is temporarily stopped.

FIG. 8 is a schematic plan view in a state where a pair of cutting action tools 16a and 16b are raised and pressed against the lower surface 3a of the coiler wheel 3.

FIG. 9 is a schematic plan view after the sliver S is cut by a pair of cutting action tools 16a and 16b.

FIG. 10 is a diagram showing the relationship between the spinning speed of the machine and the change in time.

FIG. 11 is a perspective view of a state in which the sliver S cut by the method of the present invention hangs outside the peripheral wall of the full can Ca.

FIG. 12 is a schematic plan view showing a state where the spinning machine is first stopped at a fixed position in another embodiment of the present invention.

FIG. 13 is a schematic plan view showing a state in which the full case Ca has moved forward by a predetermined distance to the machine base.

FIG. 14 is a schematic plan view showing a state in which the coiler wheel 3 is rotated until the sliver discharge hole 9 is located on the most upstream side.

FIG. 15 is a schematic plan view showing a state in which the full can Ca is slightly moved forward so that the sliver S connected between the full can Ca and the sliver discharge hole 9 of the coiler wheel 3 is tensionless. .

[Explanation of symbols]

A: coiler device B: can changing device Ca: full can Cb: empty can D: sliver cutting device M _1: Main Motor M _2: can changer motor S: sliver 3: coiler wheel 3a: coiler lower surface of the wheel 9: sliver Discharge hole 12: Detection plate 13, 13a, 13b: Proximity switch 16a, 16b: Cutting tool 24, 24a, 24b: Stop sensor

Continuation of the front page (56) References JP-A-4-308232 (JP, A) JP-A-63-196469 (JP, A) JP-A-50-13634 (JP, A) JP-A-57-189976 (JP, A) JP-A-60-52473 (JP, A) JP-A-2-178181 (JP, A) JP-A-62-269861 (JP, A) JP-A-1-41584 (JP, B2)

Claims (3)

(57) [Claims] 1. The machine is stopped by a full delivery berry can and the sliver connected between the coiler wheel and the full can is cut, and then the full can and a subsequent empty can are exchanged by a can exchange device. A method of cutting a sliver in a spinning machine configured to perform the sliver while spinning the sliver by rotating the coiler wheel at a low speed by a set number of revolutions, by restarting the machine after stopping the machine. The sliver is moved between the full can and the coiler wheel by moving the full can by the preset distance by the can exchange device and stopping both the movement of the full can and the rotation of the coiler wheel. Without hanging, it is connected without tension, and in this state, a pair of cutting action tools are pressed against the lower surface of the coiler wheel, Cutting the sliver by moving the cutting tool on the side of the sliver in that direction. 2. The stop position of the sliver discharge hole of the coiler wheel at the start of the machine and at the time of each fixed position stop after the restart is located at the most upstream side with respect to the transport direction of the full can. The method for cutting a sliver in a spinning machine according to claim 1, wherein: 3. The machine is stopped by the full delivery berry cans, the sliver connected between the coiler wheel and the full can is cut, and then the full can and the subsequent empty can are exchanged by the can exchange device. A sliver cutting method in a spinning machine configured to make the sliver discharge hole of the coiler wheel located on the downstream side with respect to the conveying direction of the full can, thereby stopping the machine base at a fixed position. Then, after moving the full can by a predetermined distance forward by the can exchange device and stopping it, the machine is restarted and the sliver discharge hole is positioned upstream of the sliver discharge hole with respect to the transport direction. By rotating the coiler wheel to stop and then moving the full can slightly forward again by the can exchange device, the full can and the coiler The sliver is connected to the eel without drooping, and without tension.In this state, a pair of cutting tools is pressed against the lower surface of the coiler wheel, and the cutting tool on the full can side is moved in that direction. A sliver cutting method in a spinning machine, wherein the sliver is cut by being moved.