FIBER DUST DISCHARGING DEVICE
BACKGROUND OF THE INVENTION
1. Field of the Invention
5 [0001] The present invention relates to a fiber
dust discharging device.
2. Description of the Related Art
[0002] As a fiber dust discharging device used in
10 a bobbin processing device that supplies a yarn
supplying bobbin to a yarn winding machine, for example,
an apparatus described in JP 2018-177419 A is known.
In the apparatus described in JP 2018-177419 A, a
bobbin process apparatus absorption duct through which
15 fiber dust generated by a bobbin process apparatus
flows is connected to a main duct (an automatic winder
absorption duct) through which fiber dust generated by
a yarn winding apparatus (an automatic winder) flows.
[0003] The bobbin process apparatus absorption
20 duct is connected with a bobbin process apparatus
blower (a fan), and an inside of the bobbin process
apparatus absorption duct is suctioned by the bobbin
process apparatus blower.
[0004] In the fiber dust discharging device
3
described above, for example, in order to reliably pull
out a yarn end by a pick finding device of the bobbin
process apparatus, it is required to suction the inside
of the bobbin process apparatus absorption duct with a
5 high suction pressure (a negative pressure of suction).
Further, in the fiber dust discharging device as
described above, a demand for energy saving is
increasing more and more.
10 BRIEF SUMMARY OF THE INVENTION
[0005]
Therefore, an object of the present invention is
to provide a fiber dust discharging device that can
suction an inside of a bobbin processing device duct
15 with a high suction pressure and enables energy saving.
[0006] A fiber dust discharging device according
to the present invention is a fiber dust discharging
device used for a bobbin processing device that
supplies a yarn supplying bobbin to a yarn winding
20 machine. The fiber dust discharging device includes: a
waste collecting section connected with a bobbin
processing device duct through which fiber dust
generated by the bobbin processing device flows, and
connected with a main duct through which fiber dust
4
generated by the yarn winding machine flows; and a
bobbin processing device blower that suctions air in
the waste collecting section. An exhaust pipe of the
bobbin processing device blower is connected to the
5 main duct.
[0007] In this fiber dust discharging device, it
is possible to suction an inside of the bobbin
processing device duct with a high suction pressure by
operating the bobbin processing device blower, even
10 when reducing a power consumption of a main blower that
suctions air in the main duct. Further, in the bobbin
processing device blower, since the exhaust pipe is
connected to the main duct, a static pressure can be
increased by utilizing a pressure in the main duct.
15 While a high static pressure required for a bobbin
processing device blower is realized, power consumption
can be reduced. Therefore, according to the present
invention, the inside of the bobbin processing device
duct can be suctioned with a high suction pressure, and
20 energy saving is enabled.
[0008] The fiber dust discharging device according
to the present invention may include a first shutter
that can open and close a flow path from the waste
collecting section to the main duct. This enables
5
reliable accumulation of fiber dust generated by the
bobbin processing device, in the waste collecting
section, for example, by causing the first shutter to
be in a closed state during an operation of the bobbin
5 processing device blower. Thereafter, for example, by
stopping the bobbin processing device blower and
causing the first shutter to be in an opened state, the
fiber dust can be discharged to the main duct.
[0009] In the fiber dust discharging device
10 according to the present invention, the first shutter
may be configured to be brought into the closed state
by a pressure difference between a pressure in the
waste collecting section and a pressure in the main
duct when the bobbin processing device blower is
15 operating. When the bobbin processing device blower is
operating, a pressure in the waste collecting section
becomes lower than a pressure in the main duct (an
absolute value of a negative pressure becomes larger).
Therefore, the first shutter can be automatically
20 brought into the closed state by utilizing the pressure
difference.
[0010] In the fiber dust discharging device
according to the present invention, the first shutter
may be configured to be brought into the opened state
6
by balance when the bobbin processing device blower is
stopped. This allows the first shutter to be
automatically brought into the opened state by
utilizing balance of forces when the bobbin processing
5 device blower is stopped.
[0011] The fiber dust discharging device according
to the present invention may include a second shutter
that can open and close the exhaust pipe of the bobbin
processing device blower. This can inhibit entering of
10 fiber dust into the bobbin processing device blower via
the exhaust pipe, by causing the second shutter to be
in a closed state when the bobbin processing device
blower is stopped.
[0012] In the fiber dust discharging device
15 according to the present invention, the second shutter
may be configured to be brought into the closed state
by an elastic force of an elastic member, when the
bobbin processing device blower is stopped or in a lowspeed operation. This allows the second shutter to be
20 automatically brought into the closed state by
utilizing the elastic force of the elastic member, when
the bobbin processing device blower is stopped or in a
low-speed operation.
[0013] In the fiber dust discharging device
7
according to the present invention, a ventilation port
communicating with the waste collecting section and an
exhaust port communicating with the exhaust pipe of the
bobbin processing device blower may be formed on one
5 planar inner surface of the main duct. This enables a
compact configuration.
[0014] In the fiber dust discharging device
according to the present invention, the bobbin
processing device blower has a plurality of impellers
10 that generate a suction flow by being rotated. In this
case, it is possible to realize a bobbin processing
device blower having a high static pressure.
[0015] In the fiber dust discharging device
according to the present invention, the bobbin
15 processing device blower may be arranged vertically
above the waste collecting section, an end of the
bobbin processing device duct on the waste collecting
section side may extend along a first direction that is
a horizontal direction, an end of the main duct on the
20 waste collecting section side may extend along the
first direction, and the exhaust pipe of the bobbin
processing device blower may extend along the first
direction toward an upstream side of the bobbin
processing device duct, extend so as to be bent
8
vertically downward, and then extend along the first
direction toward a downstream side of the bobbin
processing device duct. This enables the fiber dust
discharging device to be configured efficiently in
5 order to realize the above-mentioned effect of
suctioning the inside of the bobbin processing device
duct with a high suction pressure and enabling energy
saving.
[0016] According to the present invention, it is
10 possible to provide a fiber dust discharging device
that can suction an inside of a bobbin processing
device duct with a high suction pressure and enables
energy saving.
15 BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. 1 is a plan view illustrating a yarn
winding system including a fiber dust discharging
device according to one embodiment;
FIG. 2 is a view illustrating a schematic
20 configuration of the fiber dust discharging device of
FIG.1;
FIG. 3 is a perspective view illustrating the
fiber dust discharging device of FIG.1;
FIG. 4 is a perspective view illustrating a state
9
where a first shutter in the fiber dust discharging
device of FIG. 1 is in an opened state;
FIG. 5 is a perspective view illustrating a state
where the first shutter in the fiber dust discharging
5 device of FIG. 1 is in a closed state;
FIG. 6 is a graph illustrating a relationship
between a blower power consumption and a number of
weights of a winding unit; and
FIG. 7 is a graph illustrating blower
10 characteristics of a bobbin processing device blower.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0018] Hereinafter, an embodiment will be
described in detail with reference to the drawings. In
15 the following description, the same reference numerals
are given for the same or corresponding elements, and
redundant explanations are omitted. Moreover, in the
following description, high or low of a pressure
indicates magnitude of the pressure. A positive
20 pressure indicates magnitude of a pressurizing force (a
plus pressure), and a negative pressure indicates
magnitude of a depressurizing force (a minus pressure).
The expression that a static pressure is high indicates
that magnitude of the depressurizing force is large,
10
and indicates that an absolute value of the negative
pressure (a minus side pressure) is large, in another
expression.
[0019] As illustrated in FIG. 1, a fiber dust
5 discharging device 100 according to one embodiment is
mounted on a yarn winding system 1. Therefore, first,
the yarn winding system 1 will be described. The yarn
winding system 1 includes an automatic winder 3, a
bobbin processing device 5, and a control device 7.
10 [0020] The automatic winder 3 is a device that
pulls out a yarn from a prepared yarn supplying bobbin
(a yarn supplying bobbin) 11B and winds the yarn as a
package. The automatic winder 3 includes an end frame
20 and a plurality of winding units (yarn winding
15 machines) 30. The end frame 20 includes a display
section such as a display, an operation section such as
an input key, a machine control section that controls
an operation of the automatic winder 3, and a main
blower 123 that suctions air in a main duct 112
20 described later. The plurality of winding units 30 are
arranged in one direction.
[0021] By the bobbin processing device 5, a yarn
supplying bobbin 11A in a state where a yarn is wound
around a winding tube supplied from a spinning machine
11
or the like in an upstream step, the prepared yarn
supplying bobbin 11B, and a used bobbin 13 in which
some or all of the yarn has been pulled out from the
prepared yarn supplying bobbin 11B by the winding unit
5 30 are transported while being mounted on a conveyance
tray 9, and supplied to the winding unit 30.
[0022] The bobbin processing device 5 includes a
conveyance path 61, a bobbin supplying device 51, a
pick finding device 53, and a bobbin extracting device
10 55. The conveyance path 61 is a path for conveyance of
the yarn supplying bobbin 11A, the prepared yarn
supplying bobbin 11B, and the used bobbin 13. A part
of the conveyance path 61 includes a conveyor to
transport the conveyance tray 9, a conveyor driving
15 device, a path defining plate, and the like. Another
part of the conveyance path 61 includes a round belt to
transport the conveyance tray 9, a belt driving device,
a pulley, a path defining plate, and the like.
[0023] The bobbin supplying device 51 supplies the
20 yarn supplying bobbin 11A formed in a previous step of
the spinning machine or the like onto the conveyance
path 61. The pick finding device 53 has: a rotary
cutter 53A that cuts a bunch winding portion in the
yarn supplying bobbin 11A to form a yarn end; a
12
searcher 53B that peels off the yarn end from a yarn
layer surface of the yarn supplying bobbin 11A; and a
yarn processing device 70 that forms the prepared yarn
supplying bobbin 11B. The rotary cutter 53A, the
5 searcher 53B, and the yarn processing device 70 are
arranged in this order from an upstream side along the
conveyance path 61. The bobbin extracting device 55
collects the used bobbin 13. On an upstream side of
the bobbin extracting device 55, there is arranged a
10 discrimination device 55A that discriminates whether or
not the yarn is wound around the winding tube, that is,
whether or not a bobbin mounted on the conveyance tray
9 is the used bobbin 13.
[0024] The control device 7 includes a central
15 processing unit (CPU), a read only memory (ROM), a
random access memory (RAM), an auxiliary storage device,
and the like. The control device 7 executes various
control processes in the yarn winding system 1. The
various control processes are executed, for example, by
20 loading a program stored in the ROM onto the RAM and
executing the program with the CPU. In the control
device 7, various functions are realized by cooperation
of hardware such as the CPU, the RAM, and the auxiliary
storage device with software such as the above programs.
13
The control device 7 controls an operation of a bobbin
processing device duct 111 described later.
[0025] The yarn winding system 1 includes the
fiber dust discharging device 100 as described above.
5 Hereinafter, the fiber dust discharging device 100 will
be described in detail with reference to at least one
of FIGS. 2, 3, 4, and 5.
[0026] The fiber dust discharging device 100 is a
device used for the bobbin processing device 5. The
10 fiber dust discharging device 100 is a device that
collects and discharges fiber dust such as yarn waste
or fiber waste generated in the bobbin processing
device 5. In general, fiber dust refers to floating
cotton waste or other floating fiber waste. However,
15 in the present invention, the concept also includes
yarn waste that is a yarn-shaped waste generated in a
processing step of the bobbin processing device 5. The
fiber dust discharging device 100 includes a waste
collecting box (a waste collecting section) 110, a
20 bobbin processing device blower 120, a first shutter
130, and a second shutter 140.
[0027] The waste collecting box 110 is a portion
to collect fiber dust, and has a rectangular box shape.
To one side of the waste collecting box 110 in one
14
direction (hereinafter, referred to as an "arrangement
direction") that is an arrangement direction of the
winding units 30, the bobbin processing device duct 111
is connected. To the other side of the waste
5 collecting box 110 in the arrangement direction, the
main duct 112 is connected. The waste collecting box
110 is held by a frame F of the bobbin processing
device 5.
[0028] The bobbin processing device duct 111 is a
10 flow path through which fiber dust generated in the
bobbin processing device 5 flows. The bobbin
processing device duct 111 is connected to the rotary
cutter 53A, the searcher 53B, and the yarn processing
device 70. Thus, the bobbin processing device duct 111
15 supplies a suction force to the rotary cutter 53A, the
searcher 53B, and the yarn processing device 70.
Further, the bobbin processing device duct 111 collects
and distributes fiber dust generated by the rotary
cutter 53A, the searcher 53B, and the yarn processing
20 device 70. An end of the bobbin processing device duct
111 on the waste collecting box 110 side extends along
the arrangement direction (a first direction) and
communicates with the waste collecting box 110.
[0029] The main duct 112 is a flow path through
15
which fiber dust generated in each winding unit 30
flows. The main duct 112 is connected to each winding
unit 30. Thus, the main duct 112 supplies a suction
force to a suction mechanism of each winding unit 30.
5 Further, when the main duct 112 is applied to a
spinning device, fiber dust of the spinning device of
each spinning unit and fiber dust attached to a draft
roller of a draft device of each spinning unit are
collected and distributed.
10 [0030] An end of the main duct 112 on the waste
collecting box 110 side extends along the arrangement
direction, and communicates with the waste collecting
box 110 via a ventilation port 119. The ventilation
port 119 is formed on an inner wall surface (an inner
15 surface) 112x of the main duct 112 at an upstream end.
The inner wall surface 112x is a flat vertical surface.
The ventilation port 119 is a hole passing between the
main duct 112 and the waste collecting box 110, and has
a rectangular shape.
20 [0031] An end of the main duct 112 opposite to the
waste collecting box 110 side is connected to the main
blower 123 in the end frame 20. The main blower 123 is
a suction source that generates a suction flow. The
main blower 123 suctions air in the main duct 112. The
16
main blower 123 is a blower of a large air volume type.
The main blower 123 has one impeller 123a that
generates a suction flow by being rotated. A maximum
static pressure, which is a maximum static pressure (a
5 pressure for sending air) of the main blower 123 is,
for example, 4 kPa.
[0032] The bobbin processing device blower 120 is
a suction source that generates a suction flow. The
bobbin processing device blower 120 suctions air in the
10 waste collecting box 110. The bobbin processing device
blower 120 is a blower of a high-pressure type. A
maximum static pressure of the bobbin processing device
blower 120 is higher than the maximum static pressure
of the main blower 123. The maximum static pressure of
15 the bobbin processing device blower 120 is, for example,
4 kPa.
[0033] The bobbin processing device blower 120 is
arranged vertically above the waste collecting box 110.
The bobbin processing device blower 120 has a plurality
20 (here, two) of impellers 120a that generate a suction
flow by being rotated. The bobbin processing device
blower 120 is held by the frame F of the bobbin
processing device 5.
[0034] The bobbin processing device blower 120 has
17
an intake pipe 121 and an exhaust pipe 124. The intake
pipe 121 forms an intake passage of the bobbin
processing device blower 120. The intake pipe 121 is
connected to an upper surface of the waste collecting
5 box 110. To the intake pipe 121, a filter 122 that
removes fiber dust is attached.
[0035] The exhaust pipe 124 forms an exhaust pipe
of the bobbin processing device blower 120. The
exhaust pipe 124 is connected to the main duct 112 via
10 an exhaust port 125. The exhaust port 125 is formed on
the same inner wall surface 112x as a surface on which
the ventilation port 119 is formed, in the main duct
112. The exhaust port 125 is a hole passing between
the main duct 112 and the exhaust pipe 124, and has a
15 circular shape. The exhaust port 125 is located below
the ventilation port 119 on the inner wall surface 112x.
The exhaust pipe 124 extends along the arrangement
direction toward an upstream side of the bobbin
processing device duct 111, extends so as to be bent
20 vertically downward, and then extends along the
arrangement direction toward a downstream side of the
bobbin processing device duct 111.
[0036] The first shutter 130 is a mechanism that
opens and closes a flow path from the waste collecting
18
box 110 to the main duct 112. The first shutter 130 is
provided at a boundary (a connecting portion) between
the waste collecting box 110 and the main duct 112.
The first shutter 130 includes a plate member 131 and a
5 support mechanism 133. The plate member 131 has a
rectangular plate shape corresponding to the
ventilation port 119. The plate member 131 can close
the ventilation port 119. The support mechanism 133
supports the plate member 131 in a swingable manner.
10 The support mechanism 133 is fixed above a periphery of
the ventilation port 119 on the inner wall surface 112x.
[0037] Such a first shutter 130 is to be
automatically brought into a closed state by a pressure
difference between a pressure in the waste collecting
15 box 110 and a pressure in the main duct 112 when the
bobbin processing device blower 120 is operating. At
this time, a number of rotations of the bobbin
processing device blower 120 is a first number of
rotations, and a pressure in the waste collecting box
20 110 is lower than a pressure in the main duct 112 (an
absolute value of a negative pressure is larger). The
closed state is a state in which the ventilation port
119 is closed by the plate member 131.
[0038] Whereas, when the bobbin processing device
19
blower 120 is stopped or is in a low-speed operation at
a reduced number of rotations, the first shutter 130 is
to be automatically brought into an opened state by
balance. At this time, the pressure in the waste
5 collecting box 110 is equal to or higher than a
pressure in the main duct 112. A number of rotations
of the bobbin processing device blower 120 during the
low-speed operation is a second number of rotations
smaller than the first number of rotations. The
10 balance is balance of forces according to a shape, a
support structure, a weight, and the like of the first
shutter 130. The opened state is a state in which
there is a gap between the plate member 131 and the
ventilation port 119. Note that the number of
15 rotations means a number of rotations per unit time.
The number of rotations may be treated as a rotation
speed.
[0039] The second shutter 140 is a mechanism that
opens and closes the exhaust pipe 124 of the bobbin
20 processing device blower 120. The second shutter 140
is provided at a boundary (a connecting portion)
between the exhaust pipe 124 and the main duct 112.
The second shutter 140 includes a plate member 141, a
support mechanism 143, and a torsion spring 144. The
20
plate member 141 has a circular plate shape
corresponding to the exhaust port 125. The plate
member 141 can close the exhaust port 125. The support
mechanism 143 supports the plate member 141 in a
5 swingable manner. The support mechanism 143 is fixed
to one horizontal side of a periphery of the exhaust
port 125 on the inner wall surface 112x. The torsion
spring 144 urges the plate member 141 by an elastic
force so as to cause the plate member 141 to swing in a
10 direction approaching the exhaust port 125.
[0040] Such a second shutter 140 is to be
automatically brought into an opened state by exhaust
of the bobbin processing device blower 120 when the
bobbin processing device blower 120 is operating. The
15 opened state is a state in which there is a gap between
the plate member 141 and the exhaust port 125. Whereas,
the second shutter 140 is brought into a closed state
by an elastic force of the torsion spring 144 when the
bobbin processing device blower 120 is stopped or is in
20 a low-speed operation. The closed state is a state in
which the exhaust port 125 is closed by the plate
member 141.
[0041] Next, an example of removing fiber dust by
using the above described fiber dust discharging device
21
100 will be described.
[0042] In a state where an inside of the main duct
112 is suctioned by the main blower 123 and the inside
of the main duct 112 is in a negative pressure state,
5 the bobbin processing device blower 120 is operated
during an operation of the bobbin processing device 5.
The bobbin processing device blower 120 suctions air in
the waste collecting box 110, and suctions an inside of
the bobbin processing device duct 111. At this time,
10 the second shutter 140 is brought into the opened state
by exhaust of the bobbin processing device blower 120,
and the exhaust is discharged to the main duct 112.
Therefore, the negative pressure in the bobbin
processing device blower 120 is increased by utilizing
15 a pressure (a negative pressure) in the main duct 112.
[0043] As a result, a pressure in the waste
collecting box 110 is sufficiently reduced, and the
pressure in the waste collecting box 110 becomes lower
than that in the main duct 112 (an absolute value of
20 the negative pressure becomes larger). The first
shutter 130 is to be automatically brought into the
closed state by a pressure difference between the waste
collecting box 110 and the main duct 112 (see FIG. 5).
Subsequently, the bobbin processing device blower 120
22
suctions air in the waste collecting box 110, and
suctions the inside of the bobbin processing device
duct 111. In this way, fiber dust generated in the
bobbin processing device 5 and flowing through the
5 bobbin processing device duct 111 is accumulated in the
filter 122 of the waste collecting box 110.
[0044] Thereafter, when fiber dust is accumulated
in the waste collecting box 110 to some extent, the
bobbin processing device blower 120 is stopped or
10 operated at a low speed. An exhaust pressure of the
bobbin processing device blower 120 is reduced, the
second shutter 140 is brought into the closed state by
an elastic force of the torsion spring 144, and
backflow to the bobbin processing device blower 120 via
15 the exhaust pipe 124 is inhibited. The pressure in the
waste collecting box 110 returns, the pressure in the
waste collecting box 110 becomes equal to or higher
than that in the main duct 112, and the first shutter
130 is automatically brought into the opened state by
20 balance (see FIG. 4). As a result, the fiber dust in
the waste collecting box 110 is discharged to the main
duct 112 through the ventilation port 119. The fiber
dust flows with fiber dust generated in each winding
unit 30, through the main duct 112 to a main waste
23
collecting box (not illustrated), and is removed by an
operator.
[0045] As described above, since the fiber dust
discharging device 100 includes the bobbin processing
5 device blower 120, it is possible to suction the inside
of the bobbin processing device duct 111 with a high
suction pressure (a negative pressure of suction) by
operating the bobbin processing device blower 120, even
when reducing a power consumption of the main blower
10 123 that suctions air in the main duct 112. Further,
in the bobbin processing device blower 120, since the
exhaust pipe 124 is connected to the main duct 112, a
static pressure can be increased by utilizing a
pressure in the main duct 112. A high static pressure
15 (a negative pressure) required for the bobbin
processing device blower 120 is realized, and power
consumption can be reduced. Therefore, according to
the fiber dust discharging device 100, the inside of
the bobbin processing device duct 111 can be suctioned
20 with a high suction pressure, and energy saving is
enabled.
[0046] In the fiber dust discharging device 100,
by operating the bobbin processing device blower 120
and causing the first shutter 130 to be in the closed
24
state, fiber dust generated in the bobbin processing
device 5 can be reliably accumulated in the waste
collecting box 110. Thereafter, for example, by
stopping the bobbin processing device blower 120 or
5 operating the bobbin processing device blower 120 at a
low speed, and causing the first shutter 130 to be in
the opened state, the fiber dust can be discharged to
the main duct 112.
[0047] In the fiber dust discharging device 100,
10 the first shutter 130 is configured to be brought into
the closed state by a pressure difference between a
pressure in the waste collecting box 110 and a pressure
in the main duct 112 when the bobbin processing device
blower 120 is operating. Since the pressure in the
15 waste collecting box 110 becomes lower than the
pressure in the main duct 112 when the bobbin
processing device blower 120 is operating, the pressure
difference can be utilized to automatically cause the
first shutter 130 to be in the closed state.
20 [0048] In the fiber dust discharging device 100,
the first shutter 130 is configured to be brought into
the opened state by balance when the bobbin processing
device blower 120 is stopped. This allows the first
shutter 130 to be automatically brought into the opened
25
state by utilizing balance of forces when the bobbin
processing device blower 120 is stopped.
[0049] In the fiber dust discharging device 100,
when the bobbin processing device blower 120 is stopped,
5 it is possible to inhibit entering of fiber dust into
the bobbin processing device blower 120 via the exhaust
pipe 124, by causing the second shutter 140 to be in
the closed state.
[0050] In the fiber dust discharging device 100,
10 the second shutter 140 is configured to be brought into
the closed state by an elastic force of the torsion
spring 144 when the bobbin processing device blower 120
is stopped or is in a low-speed operation. This allows
the second shutter 140 to be automatically brought into
15 the closed state by utilizing the elastic force of the
torsion spring 144 when the bobbin processing device
blower 120 is stopped or is in a low-speed operation.
[0051] In the fiber dust discharging device 100,
on one inner wall surface 112x of the main duct 112,
20 there are formed the ventilation port 119 communicating
with the waste collecting box 110 and the exhaust port
125 communicating with the exhaust pipe 124 of the
bobbin processing device blower 120. This enables a
compact configuration.
26
[0052] In the fiber dust discharging device 100,
the bobbin processing device blower 120 has the
plurality of impellers 120a. In this case, it is
possible to realize the bobbin processing device blower
5 120 having a high static pressure (a negative pressure).
[0053] In the fiber dust discharging device 100,
the bobbin processing device blower 120 is arranged
vertically above the waste collecting box 110. An end
of the bobbin processing device duct 111 on the waste
10 collecting box 110 side extends along the arrangement
direction, and an end of the main duct 112 on the waste
collecting box 110 side extends along the arrangement
direction. The exhaust pipe 124 of the bobbin
processing device blower 120 extends along the
15 arrangement direction toward an upstream side of the
bobbin processing device duct 111, extends so as to be
bent vertically downward, and then extends along the
arrangement direction toward a downstream side of the
bobbin processing device duct 111. This enables the
20 fiber dust discharging device 100 to be configured
efficiently in order to realize the above-mentioned
effect of suctioning the inside of the bobbin
processing device duct 111 with a high suction pressure
and enabling energy saving.
27
[0054] In the fiber dust discharging device 100, a
maximum static pressure of the bobbin processing device
blower 120 is higher than a maximum static pressure of
the main blower that suctions air in the main duct 112.
5 This enables reduction of power consumption of the main
blower 123 while the inside of the bobbin processing
device duct 11 is suctioned with a high static pressure.
[0055] Since fiber dust is automatically
discharged to the main duct 112 side with the number of
10 rotations of the bobbin processing device blower 120,
there is no need for an operator to remove fiber dust
from the bobbin processing device 5. Further, the
fiber dust can be automatically discharged to the main
duct 112 side simply by the operator stopping the
15 bobbin processing device 5 for a short time or
operating the bobbin processing device 5 at a low speed.
A size of the waste collecting box 110 can be reduced.
Since the first shutter 130 is opened and closed by a
pressure difference, no driving device is specifically
20 required, the structure is simplified, and the cost can
be reduced.
[0056] In the fiber dust discharging device 100,
it is possible to freely set a maximum static pressure
of the bobbin processing device blower 120 and a
28
maximum static pressure of the main blower 123 that
suctions air in the main duct 112. A degree of freedom
of selection can be improved. Since the two blowers
120 and 123 are cooperating, an optimal static pressure
5 can be realized by utilizing mutual abilities thereof.
This enables reduction of power consumption of the main
blower 123 while the inside of the bobbin processing
device duct 111 is suctioned with a high static
pressure.
10 [0057] FIG. 6 is a graph illustrating a
relationship between a blower power consumption and a
number of weights of the winding unit 30. In FIG. 6,
data B0 is data of a conventional configuration
including the main blower 123 alone. Data B1 is data
15 of the yarn winding system 1 including the main blower
123 and the bobbin processing device blower 120. While
a static pressure of the conventional main blower is 4
kPa, a static pressure of the main blower 123 is 2 kPa
in the yarn winding system 1, and the static pressure
20 can be reduced. As illustrated in FIG. 6, it can be
seen that the blower power consumption can be
significantly reduced as the number of weights of the
winding unit 30 increases.
[0058] FIG. 7 is a graph illustrating blower
29
characteristics when the exhaust pipe 124 of the bobbin
processing device blower 120 is connected to and is not
connected to the main duct 112. In FIG. 7, data C0 is
data of a conventional configuration in which the
5 exhaust pipe 124 is not connected to the main duct 112.
Data C1 is data of the yarn winding system 1 in which
the exhaust pipe 124 is connected to the main duct 112.
As illustrated in FIG. 7, when the exhaust pipe 124 is
connected to the main duct 112, a static pressure can
10 be increased, and can be increased by about 2 kPa
(corresponding to a negative pressure of the main duct
112), for example, when a flow rate is 0.
[0059] One embodiment of the present invention has
been described above, but the present invention is not
15 limited to the above-described embodiment.
[0060] In the above-described embodiment, while
the bobbin processing device duct 111 is connected to
the pick finding device 53, a connection source of the
bobbin processing device duct 111 is not particularly
20 limited, and the bobbin processing device duct 111 may
be connected to various devices of the bobbin
processing device 5.
[0061] In the above-described embodiment, the
first shutter 130 may be omitted. The first shutter
30
130 may be a mechanism that opens and closes with a
control signal from the control device 7 or the like.
The first shutter 130 may be a mechanism that is
manually opened and closed by an operator. A
5 configuration of the first shutter 130 is not
particularly limited. The configuration in which the
closed state is caused by a pressure difference between
a pressure in the waste collecting box 110 and a
pressure in the main duct 112 when the bobbin
10 processing device blower 120 is operating is not
limited to the configuration of the above-described
embodiment, and various known configurations can be
used. The configuration in which the opened state is
caused by balance when the bobbin processing device
15 blower 120 is stopped or in a low-speed operation is
not limited to the configuration of the above-described
embodiment, and various known configurations can be
used.
[0062] In the above-described embodiment, the
20 second shutter 140 may be omitted. The second shutter
140 may be a mechanism that opens and closes with a
control signal from the control device 7 or the like.
The second shutter 140 may be a mechanism that is
manually opened and closed by an operator. A
31
configuration of the second shutter 140 is not
particularly limited. The configuration in which the
opened state is caused by exhaust when the bobbin
processing device blower 120 is operating is not
5 limited to the configuration of the above-described
embodiment, and various known configurations can be
used. The configuration in which the closed state is
caused by an elastic force of the torsion spring 144
when the bobbin processing device blower 120 is stopped
10 or in a low-speed operation is not limited to the
configuration of the above-described embodiment, and
various known configurations can be used.
[0063] In the above-described embodiment, instead
of or in addition to the second shutter 140, a filter
15 capable of removing fiber dust may be provided in the
exhaust port 125 or the exhaust pipe 124. The elastic
member that applies an elastic force to the second
shutter 140 is not limited to the torsion spring 144,
and may be another elastic member.
20 [0064] In the above-described embodiment, the
waste collecting box 110 is provided as the waste
collecting section, but the waste collecting box 110
may be omitted. In this case, a downstream end of the
bobbin processing device duct 111 may function as the
32
waste collecting section. At least a part of the
embodiment and various alternative embodiments
described above may be optionally combined.
[0065] In the above, for example, while a pressure
5 value is based on 0 kPa, when a pressure value is 20
kPa, the value is "large", a general static pressure is
"large", and an absolute pressure is "large". For
example, while a pressure value is based on 0 kPa, when
a pressure value is −20 kPa, the value is "small", a
10 general static pressure is "small", and an absolute
pressure is "large". Further, for example, while a
pressure value is based on 0 kPa, in a relationship
between pressure values of -10 kPa and -20 kPa, a
negative pressure is "large" when the pressure value is
15 -20 kPa, and a negative pressure is "small" when the
pressure value is -10 kPa.

WE CLAIM
1. A fiber dust discharging device (100) used in
a bobbin processing device (5) that supplies a yarn
supplying bobbin (11A) to a yarn winding machine (30),
5 the fiber dust discharging device (100) comprising:
a waste collecting section (110) connected with a
bobbin processing device duct (111) through which fiber
dust generated by the bobbin processing device (5)
flows, and connected with a main duct (112) through
10 which fiber dust generated by the yarn winding machine
(30) flows; and
a bobbin processing device blower (120) that
suctions air in the waste collecting section (110),
wherein an exhaust pipe (124) of the bobbin
15 processing device blower (120) is connected to the main
duct (112).
2. The fiber dust discharging device (100) as
claimed in claim 1, comprising a first shutter (130)
20 that can open and close a flow path from the waste
collecting section (110) to the main duct (112).
3. The fiber dust discharging device (100) as
claimed in claim 2, wherein the first shutter (130) is
34
configured to be brought into a closed state by a
pressure difference between a pressure in the waste
collecting section (110) and a pressure in the main
duct (112), when the bobbin processing device blower
5 (120) is operating.
4. The fiber dust discharging device (100) as
claimed in claim 2 or 3, wherein the first shutter
(130) is configured to be brought into an opened state
10 by balance when the bobbin processing device blower
(120) is stopped.
5. The fiber dust discharging device (100) as
claimed in any one of claims 1 to 4, comprising a
15 second shutter (140) that can open and close the
exhaust pipe (124) of the bobbin processing device
blower (120).
6. The fiber dust discharging device (100) as
20 claimed in claim 5, wherein the second shutter (140) is
configured to be brought into a closed state by an
elastic force of an elastic member, when the bobbin
processing device blower (120) is stopped or is in a
low-speed operation.
35
7. The fiber dust discharging device (100) as
claimed in any one of claims 1 to 6, wherein a
ventilation port (119) communicating with the waste
5 collecting section (110) and an exhaust port (125)
communicating with the exhaust pipe (124) of the bobbin
processing device blower (120) are formed on one planar
inner surface of the main duct (112).
10 8. The fiber dust discharging device (100) as
claimed in any one of claims 1 to 7, wherein the bobbin
processing device blower (120) has a plurality of
impellers (120a) that generate a suction flow by being
rotated.
15
9. The fiber dust discharging device (100) as
claimed in any one of claims 1 to 8, wherein the bobbin
processing device blower (120) is arranged vertically
above the waste collecting section (110), an end of the
20 bobbin processing device duct (111) on the waste
collecting section (110) side extends along a first
direction that is a horizontal direction, an end of the
main duct (112) on the waste collecting section (110)
side extends along the first direction, and the exhaust
36
pipe (124) of the bobbin processing device blower (120)
extends along the first direction toward an upstream
side of the bobbin processing device duct (111),
extends to be bent vertically downward, and then
5 extends along the first direction toward a downstream
side of the bobbin processing device duct (111).