JP2550170B2 - Cleaning device in spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning device in a spinning machine.

[Prior Art] Generally, in a spinning machine such as a roving machine or a spinning machine, cotton wool is generated in the roller part of the draft device, and if this cotton wool is left unattended, the cotton wool is taken into the yarn being spun. This will reduce the quality of the spun yarn. Therefore, in the spinning machine, a pneumatic device is provided at the exit of each roller part to remove a part of the fiber that is not twisted into the yarn during normal spinning, and to suck and remove the continuously supplied fleece when the yarn is broken. I am trying. Traveling cleaners that run along the spinning frame are also widely used as cleaning devices.

However, when a traveling cleaner is used, the cotton dust blown off from the machine base by the air stream blown from the traveling cleaner accumulates on the machine base again.
There is a problem that the cotton wool is scattered and the working environment is deteriorated. Further, in the pneumatic device, since a filter box is provided at the end of each spinning machine to collect sucked cotton wool or the like on the filter, periodic cleaning of the filter is required,
In addition to the problem that the cleaning cycle is short, there is also the problem that the suction action on the side far from the filter box is reduced.

As a cleaning device for solving the above-mentioned problems, the applicant of the present application arranges a dust box having a suction opening for forming a suction air flow over the entire length of the machine base at the lower part of the rear surface of the roller part, and the machine body is long in the dust box. A suction airflow generator having a rotary impeller extending along the direction is provided over the entire length of the dust box, an opening for blowing out a blowout airflow is provided over the entire length of the suction airflow generator, and an adsorption net is provided on the intake side of the suction airflow generator. We have proposed a device that is installed and moves the suction net along the machine base longitudinal direction by the suction net drive device, and removes cotton dust and the like adsorbed on the suction net with a suction removal device arranged at a predetermined position. . (Japanese Patent Laid-Open No. 62-62936, Japanese Utility Model Laid-Open No. 63-1
No. 02776 publication).

[Problems to be Solved by the Invention] However, in the above-mentioned conventional apparatus, the suction capacity is kept constant, and the processing capacity of the cleaning apparatus is set to a state in which the cotton wool, the thread-breakage fiber, etc. can be sufficiently processed when a thread breakage occurs. Was configured. That is, the rotary impeller is always rotated at a constant high speed, and the suction net is also moved at a high speed that can cope with yarn breakage. Therefore, the strength of the suction airflow is sufficiently stronger than that of absorbing and holding the cotton wool floating in the air on the adsorption net, and the movement speed of the adsorption net is fast, so the amount of cotton wool attached to the adsorption net is small and short. There is an inconvenience that the fibers or the like pass through the adsorption net without being entangled with the cotton wool or the adsorption net, are sucked into the dust box, and are attached to the rotary impeller or the like or are discharged together with the blowing airflow.

The present invention has been made in view of the above problems, and its object is the rotation speed of the rotary impeller and the movement speed of the adsorption net during the occurrence of yarn breakage or during normal operation when the fly density in the air does not increase. At least one of the rotation speed of the rotary impeller and the movement speed of the adsorption net when a yarn breakage occurs or when the concentration of the cotton dust in the air increases. It is an object of the present invention to provide a cleaning device for a spinning machine, which can increase the processing speed of fly and the like at a high speed.

[Means for Solving the Problem] In order to achieve the above object, in the present invention, a dust box having an intake opening for forming a suction air flow over the entire length of the machine base is arranged at least in the lower rear portion of the roller part, A suction airflow generation device having a rotary impeller extending in the machine longitudinal direction is provided in the dust box over the entire length of the dust box, and an opening for blowing out a blowout airflow is provided over the entire length of the suction airflow generation device. A suction net is attached to the intake side, drive means for moving the suction net to the machine base end is provided, and cleaning means for acting on the suction net is provided at the machine base end, and the rotary impeller and the suction net are installed. The operating speed of at least one of them can be changed.

[Operation] In the device of the present invention, when the rotary impeller arranged in the dust box is rotationally driven, a suction airflow is generated from the outside of the dust box toward the intake opening of the dust box. Due to this suction airflow, cotton wool generated in the roller part and the spindle part, fleece continuously supplied from the front roller at the time of yarn breakage, floating cotton wool in the air, and the like are adsorbed on the adsorption net covering the opening. The adsorption net is moved along the longitudinal direction of the dust box, and the fly dust or the like adsorbed on the adsorption net is continuously removed by the cleaning means arranged at the end of the machine base. In a state in which no yarn breakage occurs or in a normal operating state in which the air dust concentration is below a predetermined value, the rotating speed of the rotary impeller and the moving speed of the adsorption net are operated at low speed, and the suction airflow enters the intake opening. The cotton wool to be waxed is attached to the adsorption net, and the short fibers are attached to the cotton wool attached to the adsorption net. On the other hand, when yarn breakage occurs or when the fly dust concentration in the air becomes high, at least one of the rotational speed of the rotary impeller and the moving speed of the adsorption net is changed to a high speed for operation.

Example 1 Hereinafter, a first example in which the present invention is embodied in a spinning machine will be described with reference to FIGS. A dust box 4 is arranged over the entire length in the longitudinal direction of the machine frame at the center of the rear lower machine frame of the draft device 3 arranged on the roller beams 2 arranged on both the left and right sides of the spinning machine frame 1. The dust box 4 has an intake opening 5 formed on the left and right sides of the dust box 4 below the rear surface of the roller part R over the entire length in the machine longitudinal direction. Rotating shafts 7 which are slightly longer than the height of the dust box 4 are vertically arranged at two places respectively on both ends of the spinning frame 1 of the spinning frame 1, and pulleys 8 with pins are integrally formed on the upper and lower ends of each rotating shaft 7. It is rotatably fitted and fixed. An endless suction net 9 is wound between the pinned pulleys 8 so as to extend along the longitudinal direction of the machine base while covering the intake opening 5. The suction net 9 has a reinforcing belt 10 in which engaging holes (not shown) for engaging with the pins of the pulley 8 with pins are formed on both upper and lower sides, and each engaging hole engages with the pins of the pulley 8 with pins. It is wound between the pulleys 8 with pins in the state of being. The driven pulley 11 fixed to one of the rotating shafts 7 and the drive pulley fixedly fitted to the output shaft of the net moving motor 12
The suction net 9 is driven by the driving of the net moving motor 12 via the belt 14 wound around the suction net 9. A variable speed motor is used as the net moving motor 12, and its moving speed is changed based on a control signal from the control device 15. The driven pulley
11, net moving motor 12, drive pulley 13 and belt 14
This constitutes a drive means for moving the suction net 9 to the machine base end.

At the center of the dust box 4, a double-headed drive motor 16 constituting a suction airflow generator is arranged.
A line shaft 17 extending along the machine longitudinal direction is connected to the output shaft of the so as to be integrally rotatable. Line shaft
A large number of rotary impellers 18 for generating a suction airflow F1 from the intake opening 5 are attached to the air intake valve 17. As shown in FIG. 4, the rotary impeller 18 is fitted integrally rotatably with respect to the line shaft 17 with a pair of mounting discs 19 penetrating the line shaft 17 at the center thereof. It is formed by fixing a large number of curved plates 20 to. Curved plate
No. 20 is made by pressing a plate material and punching it, and has its surface smoothened, and electrodeposition coating (cationic electrodeposition coating is preferable) is applied to prevent the attachment of cotton wool. In order to make the surface smooth, the surface may be subjected to shot blasting or the curved plate 20 may be formed of a resin molded product. Drive motor
A variable speed motor is used for 16 as in the suction net moving motor 12, and the variable speed motor is driven by a control signal from the control device 15.

At the lower part of the dust box 4, an opening 4b is formed in which a guide plate 4a formed in a shape expanding downward is formed in order to blow out a blown air flow F2 due to the rotation of the rotary impeller 18 toward the lower side of the machine base. Has been done. Further, on the machine head 6, as a cleaning means for removing dust and the like adhering to the suction net 9, a salutation mouth 21 connected to an intake source (not shown) is provided.

The control device 15 includes a CPU 22 and a program memory 23 including a read-only memory (ROM) storing a control program.
And a work memory 2 including a rewritable and rewritable memory (RAM) for temporarily storing the calculation processing result in the CPU 2.
4, the CPU 22 operates based on the program data stored in the program memory 23, and the interface 25
And the motor 1 for net movement via the motor drive circuits 26 and 27
2 and the drive motor 16 are driven and controlled.
Further, a thread breakage detection signal from a thread breakage detection device 28 provided for each weight is input to the CPU 22.

Next, the operation of the device configured as described above will be described.
When the machine base is operated, the drive motor 16 is also driven, the line shaft 17 is rotationally driven, and the rotary impeller 18 rotates integrally with the line shaft 17 in the arrow direction of FIG. As a result, a suction airflow F1 is generated in the upper part of the spinning frame 1 from the roller part R and the spindle part 29 of the draft device 3 toward the suction net 9. The cotton wool generated from the roller part R, the fleece continuously supplied from the front roller at the time of yarn breakage, or the fiber dust floating in the air are adsorbed on the adsorption net 9 by the suction airflow F1. or,
Due to the rotation of the rotary impeller 18, a blowout airflow F2 is emitted from the lower part of the dust box 4 toward the lower side of the machine base, and due to the action of the blowout airflow F2, the cotton wool accumulated on the chin pulley or the like arranged in the center of the machine base. Is blown off and is blown out from below the machine base to the outside of the machine base together with the blowing airflow F2. Fly dust and the like blown out from below the machine base is removed by a traveling cleaner or the like. On the other hand, the suction net 9 is moved in the direction of the arrow in FIG.
At the position corresponding to 21, suction cotton 21 sucked and deposited on the suction net 9 is sucked and removed by the suction mouth 21.

During normal operation in which no yarn breakage has occurred, the net moving motor 12 and the drive motor 16 are both driven at a low speed, the suction net 9 moves at a low speed, and the suction impeller 18 blows the air flow.
The strength of F1 is also weak. During normal operation, the amount of cotton wool and fiber waste to be collected by the adsorption net 9 is a relatively small fixed amount, so even if the suction airflow F1 is weak, the cotton dust, etc. in the air is sufficiently guided to the adsorption net 9 for adsorption. Tuft gas adheres to the net in tufts. Then, the tufts attached to the tufts serve as a filter to prevent passage of short fibers and the like, and the short fibers can be carried together with the fly cotton to a position corresponding to the suction mouth 21.

On the other hand, when thread breakage occurs frequently due to some factor (for example, roving replacement), a thread breakage detection signal from the thread breakage detection device 28 is input to the CPU 22. The CPU 22 outputs a signal for driving the net moving motor 12 and the drive motor 16 at high speed to the motor drive circuits 26 and 27 through the interface 25 when the yarn breakage weight reaches a preset amount by this signal. As a result, the net moving motor 12 and the drive motor 16 are operated at high speed. Therefore, even if the amount of cotton wool and fleece to be collected in a predetermined time increases due to yarn breakage or the like, the suction ability of the suction airflow F1 and the transport ability of the suction net 9 increase, and the cotton wool and fleece correspond to the suction mouth 21. It is surely transported to the position and collected from the suction net 9 by the suction mouse 21. Instead of switching both motors 12 and 16 between high speed and low speed, the yarn breakage detection signal is used to judge the yarn breakage condition and the driving speeds of both motors 12 and 16 are set in multiple stages according to the yarn breakage occurrence condition. The drive may be controlled so as to be switched and operated.

Second Embodiment Next, a second embodiment will be described with reference to FIGS. In this embodiment, it is necessary to inform the CPU 22 that it is necessary to increase the rotational speeds of the net moving motor 12 and the driving motor 16 so that the cleaning means for removing dust and the like adhering and accumulating on the suction net 9 can be removed. The present embodiment differs from the above-described embodiment in that the yarn breakage detecting device 28 is replaced by a detecting means for detecting the thickness of the collected fly cotton attached and deposited on the suction net 9 as a means for informing. A pair of stripping rollers 30 and 31 are provided as cleaning means.

One stripping roller 30 is rotatably arranged at a predetermined position in the vicinity of the rotating shaft 7, and the stripping roller 30 has a shaft.
A belt 34 is interposed between the pulley 32a fitted to the 32 and the pulley 33 fitted to the upper end of the rotary shaft 7 to which the pinned pulley 8 is fitted.
The stripping roller 30 is rotated in synchronization with the driving of the suction net 9. The other stripping roller 31 is arranged so as to be able to come into contact with and separate from the stripping roller 30, and is biased in a direction of coming into contact with the stripping roller 30 by a biasing means (not shown). Adsorption net 9
The fibers of the cotton wool adsorbed on top of each other become entangled with each other to form a sheet. Therefore, when the net moving motor 12 is driven with one end inserted between the rollers 30 and 31, both rollers are driven.
As the suction net 9 moves by the rotation of 30, 31, the cotton wool and the like adsorbed and deposited on the suction net 9 are sequentially stripped off and fall into the recovery box 35. Since the stripping roller 31 is disposed so as to be able to come into contact with and separate from the stripping roller 30, the spacing between the stripping rollers 30 and 31 is adjusted in accordance with the change in the amount of dust and the like adsorbed and accumulated on the adsorption net 9. Change. Detection device 37 that detects the amount of movement of the shaft 31a of the stripping roller 31
Outputs a detection signal to the CPU 22, and the CPU 22 maximizes the drive speed of the net moving motor 12 and the drive motor 16 when the thickness of the recovered fly is greater than or equal to a predetermined value according to the output signal from the detection device 37. It has become. With such a configuration, it is possible to deal with a case where the amount of cotton fly in the air is increased due to some cause even though the yarn breakage has not occurred.

The present invention is not limited to the above-described embodiments, and for example, the drive speeds of the net moving motor 12 and the drive motor 16 are determined based on the yarn breakage detection signal and the thickness detection signal of the cotton wool attached to the suction net. Instead of changing, when thread breakage is likely to occur, such as during machine restart or roving change work,
Switching the drive speed of both motors 12 and 16 to high speed based on the machine operation signal, that is, the start signal and the roving change signal, and after the predetermined time has elapsed from the machine restart, or based on the roving change completion signal You can change the driving speed of 16 to low speed,
The push button switch is used to change the speed of both motors 12 and 16 so that the operator can operate the push button switch when it is known that the amount of dust, etc. will increase in advance after periodic cleaning. May be. Also, both motors 12,1
Instead of being changeable based on the speed of 6, only one of them may be changeable. Furthermore,
Other than the spinning machine, it may be embodied in a roving machine.

[Advantages of the Invention] As described in detail above, according to the present invention, the suction airflow having sufficient strength acts at any position of the dust box having the intake opening to adsorb and deposit the cotton dust on the adsorption net. At the same time, the cotton dust and the like adsorbed and deposited on the adsorption net can be reliably removed at the machine base end. Also, when there is a large amount of fuzz, such as when yarn breakage occurs, the adsorption net and rotary impeller operate at high speed and have sufficient processing capacity, and during normal operation when no yarn breakage occurs, the adsorption net drive By operating at least one of the motor for driving and the motor for driving the rotary impeller at low speed, the cotton wool is surely attached and deposited on the adsorption net, and the attached cotton wool is entangled with short fibers and the like. Since it is conveyed to the cleaning means and can be reliably recovered, and the operation is not performed at an unnecessarily high speed, the life of the adsorption net is extended and power consumption is reduced, which is an excellent effect.

[Brief description of drawings]

1 to 5 show a first embodiment embodying the present invention. FIG. 1 is a schematic plan view in which a draft device is omitted, and FIG. 2 shows a positional relationship between a rotary impeller and a suction net. FIG. 3 is a schematic perspective view, FIG. 3 is a schematic side sectional view of a spinning machine equipped with a cleaning device, FIG. 4 is a perspective view of a rotary impeller, FIG. 5 is a block diagram, and FIG. Partial plan view and FIG. 7 are side sectional views of the same. Dust box 4, opening 4b, intake opening 5, suction net 9, driven pulley 11 constituting drive means, net moving motor 12, drive pulley 13, belt 14, control device 15, drive motor constituting suction airflow generation device 16, rotary impeller 18, suction mouth 21 as cleaning means, peeling rollers 30,3
1, yarn breakage detection device 28.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Asahiro Tanaka 1-1037 Higashisakura, Higashi-ku, Nagoya, Aichi Japan Ruwa Co., Ltd. (72) Inventor Kenji Kinoshita 2-chome, Toyota-cho, Kariya, Aichi Stock Toyota Industries Corporation (72) Inventor Ken Niimi 2-1-1 Toyota Town, Kariya City, Aichi Stock Company Toyota Industries Corporation

Claims (1)

(57) [Claims] 1. A suction box having at least a lower part of a rear surface of a roller part, the dust box having an intake opening for forming a suction air flow over the entire length of a machine base, and a rotary impeller extending in the machine longitudinal direction in the dust box. An airflow generator is provided over the entire length of the dust box, an opening for blowing out a blown airflow is provided over the entire length of the suction airflow generator, an adsorption net is attached to the suction side of the suction airflow generator, and the adsorption net is transferred to the machine base end. A cleaning device for a spinning machine, characterized in that a driving means is provided, a cleaning means that acts on the adsorption net is provided at an end of a machine base, and an operating speed of at least one of the rotary impeller and the adsorption net is variable. .