JPH05247744A - Dust collector - Google Patents

Abstract

PURPOSE:To provide a dust collector enabling proper selection of its cleaning time in response to blower performance decline due to deposition of fly waste, etc. CONSTITUTION:In a dust collector where a dust box connected to a duct with a suction port opened at a proper place on a frame such as a spinning machine is connected to a blower, a negative pressure-detector is equipped at the suction side of the blower.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting device which is provided in a spinning device, a winder or the like and collects fly dust, scattered dust and the like.

[0002]

2. Description of the Related Art In a textile machine such as a spinning machine and a winder, sliver, dust and the like generated from threads are sucked from a suction port of a duct connected to a blower provided along a machine stand, Collects in a dust box provided between the blower and the suction port, or suctions the yarn end sucked from the suction port of the yarn splicing / spinning cart that runs along the machine stand or suction port of the suction mouth. Once collected in the duct box of the truck, when the truck reaches the out-end of the machine stand, it is transferred from the dust box of the truck to the machine-end duct box installed at the machine out-end and removed as appropriate. However, when these devices are used for a long period of time, extremely fine dust that has not been collected in the dust box adheres to the filter part of the dust box, the impeller part of the blower, etc., increasing the resistance to passage through the filter and increasing the impeller. As a result of the deterioration of the suction efficiency, the negative pressure in the duct is lowered, so that they are cleaned at regular intervals of about once every six months.

However, there is a difference in the amount of fly cotton scattered depending on the type of work-in-process yarn, and the cycle that causes the suction performance of the blower to deteriorate is not constant. If this is ignored and cleaning is performed at regular intervals, In some cases, the suction performance is deteriorated due to the accumulation or adhesion of dust more than expected, and conversely, the cleaning time has not come, which causes a problem in maintenance cost.

[0004]

SUMMARY OF THE INVENTION In view of the above points, an object of the present invention is to provide a dust collecting apparatus capable of appropriately detecting the cleaning time when the performance of the blower is deteriorated due to the accumulation of fly dust or the like. To do.

[0005]

[Means for Solving the Problems] In a dust collector in which a dust box connected to a duct having a suction port opened is connected to a blower at a proper place of a machine such as a spinning machine, a negative pressure detection device is provided on the suction side of the dust box. ..

[0006]

The function such as the cotton dust sucked into the duct through the suction opening provided at the proper position of the spinning machine or the like is collected in the dust box. Due to the amount of dust or the like in the dust box or the amount of dust attached to the impeller of the blower, the suction force to the dust box gradually declines and the negative pressure decreases. The pressure is measured by a pressure measuring device provided in front of the dust box, and when the predetermined pressure is reached, it is known that the cleaning time has come.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The dust collecting apparatus 1 of the present invention can be applied to a spinning device, a yarn winding device and the like. An example in which one embodiment of the present invention is applied to the spinning device 2 will be described below with reference to the drawings.

The dust collecting apparatus 1 of the present invention comprises a yarn splicing dolly truck 6 and a blower trolley pulled by the yarn splicing pallet truck 6 which runs along the spinning units 3 and which is equipped with the yarn splicing device 4, the doffing device 5 and the like. It is mounted on the blower carriage 7 of the work carriage 8 composed of 7. The work carriage 8 stops at the front surface of the unit 3 that has been requested to perform yarn splicing or doffing work, and performs the work, but is provided with stop confirmation means 9 for confirming that the unit 3 has stopped at a predetermined position. The stop confirmation means 9 may be a pin such as a pin that engages with the work carriage 8 in a protruding manner for alignment, or may be an optical sensor.

The yarn splicing and doffing trolley 6 of the work trolley 8 sucks the cutting yarn end or the cotton wool generated by the yarn splicing device 4 through the suction nozzle 10 and the suction mouth 11 which also serve as suction ports. A work cart side thread waste box 12 is provided for collecting and collecting. Work cart side lint box 12
Is attached to the wall surface of the work trolley, and when the yarn splicing doffing trolley 6 reaches the out-end box 13 at the end of the spinning machine machine, the thread waste box 14 in the out-end box 13 and the thread waste box 12 in the work trolley side A work carriage side shutter (not shown) for discharging thread waste and the like is provided. Similarly, an out-end box-side shutter (not shown) is also provided on the front end of the yarn-waste receiving port 15 in the out-end box-side lint box 14 on the out-end box 13 side. When the work carriage 8 travels to the out-end box 13 side, and the thread waste discharge port 16 on the work carriage side and the thread waste receiving port 15 on the out-end box side coincide with each other, the work carriage side shutter (not shown) and the out-end box. The side shutter is opened, and the work cart side yarn waste box 12 and the out-end box side yarn waste box 14 communicate with each other.

As shown in FIG. 1, the work cart side lint box 12 includes a suction nozzle 10 and a suction mouth 11.
Suction nozzle 1 having a conduit (not shown) connected to
It is possible to suck the yarn end from 0 and the suction mouth 11 at the time of yarn joining. Further, a connecting duct 17 is provided and connected to a duct 19 of a blower 18 mounted on a blower carriage 7 described later.

A blower carriage 7 connected to the yarn splicing doffing carriage 6 is equipped with a blower 18. As shown in FIG. 2, the blower 18 is provided with a suction port 20 and a discharge port 21, and the switching valve body guide 24 extends over the suction port 22 and the discharge port 23 of the suction port 20 and the discharge port 21, respectively.
Is provided. Further, the suction port 20 is provided with a pressure sensor 25 so that the negative pressure of the blower 18 can be detected. The pressure sensor 25 is connected to the sequencer 26 together with the work cart stop position confirmation sensor 9 described above. The switching valve body guide 24 is formed by bending both end edges of a plate-shaped body into a U-shape, and a switching valve body 27 is slidably fitted therein. The switching valve body 27 has a length which is equal to that of the suction port 22 and the discharge port 23.
And the switching valve body 27 moves along the switching valve body guide 24 to either the left or right end, the suction port 22
Either the discharge port 23 or the discharge port 23 is closed. Then, when the switching valve body 27 is in the position of closing the suction port 22, the switching valve body 27 facing the non-hole portion of the switching valve body guide 24 between the suction port 22 and the discharge port 23.
Attach the hose 28 to. The other end of the hose 28 is connected to the duct 19 via a hose connecting portion 29 provided in the port 20.
It is connected to.

A pin 30 is planted on the upper surface of the switching valve body 27, and the pin 30 is attached to the long lever 32 of the switching valve switching device 31.
Is fitted into the long groove 33 at the tip of the. The long lever 32 is supported by a shaft 34, and the short lever 35 is coaxially attached to the long lever 3.
It is provided so that it can swing together with 2. A roller 36 is pivotally supported at the tip of the short lever 35. On the other hand, at the stop position at the machine base end of the blower carriage 7, a cam plate 37 is supported by the out-end box 13 or another suitable machine frame as shown in FIG. The cam plate 37 corresponds to the switching valve switching device 3
It has a cam groove 38 into which the roller 36 of the first short lever 35 enters. As shown in FIG. 3, the cam groove 38 is bent in a dogleg shape, and when the short lever 35 is turned counterclockwise through the fitted roller 36, the long lever 32 is swung to switch the switching valve body 27. .. The switching valve body 27 is normally the spring 3
It is pulled by 9 to a position where the suction port 22 is closed.

The dust collecting apparatus 1 of the present invention is constructed as described above. In a normal state, the work trolley 8 including the yarn splicing doffing trolley 6 and the blower trolley 7 reciprocates along the units 3 arranged in the spinning device 2 by the yarn splicing doffing trolley 6 pulling or pushing the blower trolley 7. While traveling, if there is a yarn breakage, the yarn splicing device 4 splices the yarn, and if a fully wound package is not produced, the doffing device 5 doffs. Then, the cut yarn end generated by the operation of the yarn joining device 4 is sucked and collected from the suction mouth 11 and the suction nozzle 10 into the yarn waste box 12 via a conduit (not shown).

The suction collection of the yarn end and the like is performed as follows. The blower 18 is constantly rotating to perform an intake operation. A shutter (not shown) of the lint box 14 of the out-end box 13 closes the lint receiving port 15. Further, the lint discharge port 16 of the lint box 12 on the work carriage 8 side
Also, the shutter (not shown) is located at the position of the yarn waste outlet 16, and the yarn waste outlet 16 is closed. In the above state, the yarn splicing doffing cart 6 is connected to the blower cart 7 to run, and stops at the front of the unit 3 for which a yarn splicing request has been issued. At this time, the stop confirmation means 9 confirms the stop, and the yarn joining operation in the unit 3 is started.

In the yarn splicing operation, the cutting yarn end and the like from the suction mouth 11 and the like are separated and collected in the yarn waste box 12 on the side of the work carriage 8 by the suction action of the blower 18, and the sucked air is a duct for connection. It is sucked by the blower 18 through 17, 19 and the suction port 20, and is discharged from the discharge port 23. During this time, the intake pressure of the blower 18 is measured by the pressure sensor 25 provided in the suction port 20 for the degree of pressure reduction. The degree of decompression is not measured except when the yarn splicing trolley 6 is stopped at the front surface of the unit 3 that performs yarn splicing and performing the yarn splicing operation. As a result, when the measured pressure is not able to maintain the predetermined decompression level and is higher than the predetermined value, the alarm is activated and the blower etc. is activated because the suction action of the blower is insufficient. Notify that a lot of dust is attached. If the pressure is equal to or lower than the specified value, the work cart 8 moves toward the next thread breaker unit 3 after the yarn joining operation is completed without issuing an alarm because the blower is still normally suctioning.

In this way, when the work carriage 8 reaches the out-end box 13 at the machine end while collecting the thread ends and the like in the work carriage-side thread waste box 12, the work carriage is turned off by the off-end position detecting means (not shown). A signal is output to confirm that the yarn waste in the yarn waste box 12 of the yarn splicing lifter 6 is stopped at the predetermined position in the out-end box 13 in the out-end box 13.
Transferred to 4. That is, when the yarn splicing doffing trolley 6 and the blower trolley 7 reach a predetermined position of the out-end box 13, the yarn waste discharge port 16 of the work trolley-side yarn waste box 12 and the yarn waste of the out-end box-side yarn waste box 14. The receiving ports 15 face each other and open the shutters. By this operation, the lint discharge port 16 of the litter box 12 on the work carriage side
And the yarn waste boxes 12 and 14 communicate with each other via the yarn waste receiving port 15 of the out-end box side yarn waste box 14.

On the other hand, the blower cart 7 also stops when it stops at the out-end box 13 side.
The cam plate 37 supported by the supporting member 3 and the roller 36 of the short lever 35 of the switching valve switching device 31 are in contact with each other, and the roller 36 is guided by the cam groove 38 of the cam plate 37, so that the short lever 3
5 turns counterclockwise, and the long lever 32 integrated with the short lever 35 also turns in the same direction. When the long lever 32 turns counterclockwise, the switching valve body 27 engaged with the long lever 32 moves from the state shown in FIG. 3 to the state in which the discharge port 23 is closed. By the movement of the switching valve body 27, the suction port 22 of the suction port 20 is opened, and the discharge port 2 of the discharge port 21 is opened.
3 is closed, and the end of the hose 28 is located above the discharge port 23.

Here, since the blower 18 is always rotating in the same direction, the blower 18 sucks the outside air from the suction port 22 of the suction port 20, and the sucked air is discharged from the discharge port 23 of the discharge port 21. Discharge from. Outlet 2
The air discharged from No. 3 is hose 28, suction port 2
0 and the ducts 19 and 17 to reach the yarn waste box 12.
The air sent under pressure to the lint box 12 is
The yarn end or the like that has been sucked into and collected in 2 is blown out in reverse, and the yarn waste is received from the yarn waste inlet 15 of the yarn waste box 14 on the side of the out-end box 13 facing the yarn waste outlet 16 of the yarn waste box 12. It is sent into the box 14 and transferred. The lint box in the out-end box 13 is provided with a duct connected to a suction device (not shown) to apply a force when the lint is delivered.

By the backflow of the pressurized air from the blower 18, the thread waste or the like is transferred from the work carriage 8 to the thread waste box 14 in the out-end box 13. At that time, the pressure sensor 25 causes the pressure of the backflowing air to flow. To measure. The pressure of the air at this time is higher than the pressure at the time of suction during normal operation because the compressed air flows backward. And
When the pressure is lower than a predetermined value, the switching valve body 27 is not normally switched (abnormal state) and an alarm is issued. If the pressure is higher than the set value, the alarm is not issued because it is operating normally. The operation of each unit described above is shown in the flow chart of FIG.

When the above work is completed, the work carriage 8 advances in the returning direction. When the blower carriage 7 of the work carriage 8 separates from the out-end box 13, the roller 36 of the short lever 35 of the switching valve switching device 31 is guided by the cam groove 38 and assisted by the spring 39, the short lever 35 and the lever 35.
The long lever 32, which is integral with, rotates in the clockwise direction, the switching valve body 27 moves, and the discharge port 23 of the discharge port 21 opens,
The suction port 22 of the suction port 20 is closed, and suction from this portion is disabled. Then, as described above, the yarn splicing doffing cart 6 and the blower cart 7 advance along the machine base to restart the yarn splicing. When the roller 36 of the short lever 35 comes out of the cam groove 38, the short lever 35 and the long lever 32 are in a free state, but the switching valve body 27 is caused by the suction force of the blower and the spring force of the spring 37. Does not move and its position is retained.

[0021]

EFFECTS OF THE INVENTION In a dust collector in which a dust box connected to a duct having a suction port opened at a proper place of a spinning machine or the like is connected to a blower, a yarn pressure splicing device is provided on the suction side of the blower, so that the yarn splicing is performed. It is possible to detect the negative pressure of the blower at all times, and it is possible to appropriately select the cleaning time for the deterioration of the blower performance due to the accumulation of cotton wool or the like.

[Brief description of drawings]

FIG. 1 is a schematic overall front view of a spinning device.

FIG. 2 is a perspective view of a dust collector.

FIG. 3 is a plan view of the same.

FIG. 4 is a flowchart of a pressure detection process.

[Explanation of symbols]

 1 Dust collector 2 Spinning device 10 Suction nozzle 11 Suction mouth 12 Dust box 18 Blower 24 Negative pressure detection device

Claims (1)

[Claims] 1. A dust collector comprising a blower and a dust box connected to a duct having a suction port opened at an appropriate position of a machine such as a spinning machine, wherein a negative pressure detection device is provided on the suction side of the blower. And dust collector.