JP2001140134A - Spinning machine having suction duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction force changing device readily responsive to a change in suction force without requiring the exchange of the device itself in the case of a change in the suction force of a suction duct for collecting fly wastes when the suction force for sucking yarn slackness is changed for the purpose of preventing kinky threads from occurring during piecing or the spinning of a fiber bundle using a raw material producing a relatively large amount of the fly wastes is carried out. SOLUTION: This spinning machine is obtained by installing restriction plates 15, 16 and 17 which are restriction members as air flow rate regulating members in connecting ends of suction ducts D1, D2 and D3 to a dust box 25 arranged in a blower box 2 the end of the spinning machine, shifting only the plate lower end of a specific duct for strengthening the suction force upward, increasing the cross-sectional area of the duct, increasing the air flow rate, shifting the plate lower ends of the other ducts downward, reducing the cross-sectional areas of the ducts and reducing the air flow rate. Thereby, the balance of the air flow rates is changed within the range of the suction force in spite of the application of the constant and limited suction force in the blower box 2 to strengthen the suction force of the specific duct according to an increase in the cross-sectional area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plurality of suction ducts arranged along the longitudinal direction of a machine base, each of which has an opening for each unit, and each suction duct end has a common blower motor and The present invention relates to a spinning machine having a configuration communicating with a dust box.

[0002]

2. Description of the Related Art In a conventional spinning machine, fly wool and dust generated from a fiber bundle and a yarn are twisted by applying a swirling airflow to the fiber bundle and twisted from an opening near a spinning section where the yarn is generated. After entering and passing through a suction duct with a blower suction force at the end of the machine having a common blower motor, the dust is removed by being collected in a dust box. Further, a cutter provided between the spinning unit and a yarn feed roller located downstream thereof cuts an abnormal portion upon detecting an abnormality of the yarn, and an inner back roller of a draft device for stretching and thinning a fiber bundle is provided with a cutter. It is designed to stop. Therefore, the thread scraps separated from the thread cutting position by stopping the back roller enter through an opening different from the above, pass through a suction duct different from the above, and are removed by being collected in a dust box. Next, when piecing is performed by the piecing device, the yarn is nipped at the piecing point and the yarn traveling is stopped, but even during the stop, the fiber bundle is sent from the upstream side, so that the yarn that has passed through the spinning unit is slack. Occurs. Therefore, an opening is provided between the yarn splicing portion and the spinning section in order to suck the slack of the yarn, and the slack is sucked from the opening by the suction force generated by the blower, thereby preventing the entanglement of the yarn and the occurrence of twisting. It has become.

[0003]

However, conventionally, the suction force of the opening is uniquely determined from the connection between the suction duct and the dust box and the opening provided for each unit. The suction force (air flow rate) of the suction duct that sucks the slack of the yarn changes because the slack of the yarn occurs at the time of splicing due to differences in the surrounding environment such as temperature and humidity around the spinning machine and the raw material of the spinning machine If you want to keep the tension of the yarn large, or there is no problem with the occurrence of stiffness, since a large amount of fly waste and yarn waste is generated due to the difference in the material of the fiber bundle, the suction duct around the spinning device In order to change the suction force of each suction duct, it is necessary to replace the blower motor with a different power capacity or to change the cross-sectional area in order to change the suction force of each suction duct when it is desired to change the suction force of each suction duct individually to enhance the recovery rate of fly waste and the like. Be exchanged for the pulling duct has been extremely difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is intended for use in a case where the suction force for sucking a yarn slack is changed for the purpose of preventing the occurrence of twisting at the time of splicing, or when a raw material which generates a relatively large amount of fly waste is used. It is an object of the present invention to provide a suction force changing device which can easily cope with changing the suction force of a suction duct for collecting fly wool when spinning a fiber bundle which has been made without requiring replacement of the device itself. .

[0005]

In order to achieve the above object, according to the present invention, a plurality of suction ducts arranged along the longitudinal direction of the machine have an opening for each unit. In the spinning machine having a configuration in which each suction duct end communicates with a common blower motor and a dust box, a distribution ratio of an air flow between the plurality of suction ducts is changed so that a duct is provided between the plurality of suction ducts. It is stated that a suction force changing device for adjusting the distribution ratio of the internal suction force is provided. In the present invention, the blower is provided with a certain limited suction force by providing a suction force changing device that adjusts the distribution ratio of the suction force in the duct by changing the distribution ratio of the air flow rate of each of the plurality of suction ducts. Even if you have only
It is possible to easily change each suction force within the range of the suction force. Accordingly, the suction force of the opening communicating with each suction duct can be changed.

According to a second aspect of the present invention, a throttle member for changing the cross-sectional area of the duct is provided in the suction duct as a member for adjusting the air flow rate. According to the present invention, an opening / closing type throttle member is provided in the suction duct as a member for adjusting the air flow rate, and adjustment of decreasing or increasing the cross-sectional area of the suction duct by the throttle member is performed. Even if the area is limited, it is possible to easily change the cross-sectional area of a specific duct.

According to a third aspect of the present invention, the throttle member provided on the suction duct as the means for adjusting the air flow rate is provided at a connection between the suction duct and a common dust box. In the present invention, since the throttle member is provided at the connection portion between the suction duct and the common dust box, the throttle member is located in a range that can be reached by the operator,
When the suction force is changed, after the blower motor is stopped, the door of the dust box is opened, and the air flow can be easily adjusted from inside the dust box.

Further, a device for measuring a negative pressure is provided in each of the suction ducts, and the operator reads the value of the negative pressure displayed by the measuring device and adjusts the throttle member (air flow rate) manually. Alternatively, a motor for raising and lowering the aperture member and a switch for driving the motor may be provided, and adjustment may be performed by an operator's ON / OFF operation of the switch. Furthermore,
In advance, the operator sets the relationship between the negative pressure value and the position of the aperture member, and the measuring device reads the negative pressure value, and commands the control of the position adjustment of the aperture member based on the read value, Control means for automatically adjusting the position of the aperture member using a motor may be used.

In particular, when the spinning machine has a large number of machines, a mechanism capable of fixing the position of the throttle member at predetermined intervals is provided, or a scale is provided near the throttle member along the moving direction of the throttle member. By providing a structure in which the operator can clearly determine a desired shift position, if one throttle member is positioned, it can be easily positioned at the same position in other multiple units. Is preferred.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to the embodiments unless it departs from the gist of the present invention.

FIG. 1 is a perspective view showing the inside and the periphery of a blower box in a spinning machine according to an embodiment of the present invention.
FIG. 3 shows a front view and a side view of a spinning machine according to an embodiment of the present invention.

As shown in FIG. 2, a spinning machine according to an embodiment of the present invention is provided with a gear box 1 at one end of a machine base on which a number of spinning units U are juxtaposed, and a blower box 2 at the other end. ing. In FIG. 3, the spinning machine comprises upper and lower rails 21 and 22 which are provided in the machine base longitudinal direction and are parallel to each other.
A knotter for reciprocating a bogie traveling space 4 provided in a machine frame 3 having a U-shaped cross section along the line to perform a splicing operation.
A yarn splicing carriage 23 provided with 24 is provided. Further, a can K containing a fiber bundle (sliver) S is arranged behind the spinning machine stand.

As shown in FIG. 3, the spinning unit U is provided with a draft device 5 at the most upstream side along the running path of the yarn Y, and the draft device 5 is provided with a back roller 11 from the upstream side. Middle roller 12, Front roller 13
It is composed of Next, on the downstream side of the draft device 5, an air injection nozzle 6 is provided from the upstream side along the traveling path of the yarn Y,
Cutter 7, thread delivery means delivery roller 8, slab catcher 9, winding device 10, friction roller 1
4 are provided in order.

Each spinning unit U has an air injection nozzle 6 between a delivery roller 8 and a slab catcher 9.
Pipe SP having suction ports 18, 19, 20 near the outlet of the cutter or cutter 7 and near the inlet of the air injection nozzle 6
1, a suction duct D1, which is common to each spinning unit U extending in the front-back direction of FIG.
D2 and D3 are provided to communicate with each other.

As shown in FIG. 1, the interior of the blower box 2 includes a dust box 25 and a suction blower 26. The dust box 25 is provided with a door (not shown). The ends of the suction ducts D1, D2, D3 are connected to a common dust box 25 by a side wall.
At the connection between the dust box 25 and the ends of the suction ducts D1, D2, and D3, a diaphragm plate 15, which is a diaphragm member,
In the vicinity of the throttle plates 15, 16, 17, negative pressure measuring devices 27, 28, 29 for measuring the internal pressure of the suction ducts D1, D2, D3 are provided.
2 and D3. Also, dust box 25
Communicates with a suction blower 26 having a blower motor 34 and an impeller (not shown) therein. Inside the dust box 25, a filter 31 is provided. In the vicinity of the filter 31, a side plate 30 which can be freely opened and closed, and a fly waste collection chamber 32 surrounded by the dust box 25 and the filter 33 are formed.

In the spinning unit U shown in FIG. 3, the sliver S sent from the upstream side of the yarn path is stretched and thinned by the draft device 5, and the yarn Y is generated by the air injection nozzle 6 downstream of the draft device 5. It is supposed to. Here, the fly waste contained in the sliver S is sucked into the suction pipe SP3 from the suction port 20 by the application of the suction force from the suction blower 26, and is sent to the dust box 25. Next, the produced yarn Y is fed by a delivery roller 8 downstream of the air injection nozzle 6, passes through a slab catcher 9, and then contacts a friction roller 14 in a winding device 10 and rotates. -It is to be wound around the dip P.

If a yarn abnormality occurs in the generated yarn Y and the abnormal portion runs on the slab catcher 9 and the slab catcher 9 detects an abnormality, the back roller 11 stops and the spinning operation is stopped. At the same time, the cutter 7 cuts the yarn Y, and the back roller 11 and the cutter 7
The yarn Y separated between the suction port 19 and the suction port 19 is sucked into the suction pipe SP2 from the suction port 19 and sent to the dust box 25 by applying suction force from the suction blower 26 in the same manner as in the case of the suction port 20 as thread waste. It has become. In addition, the filter 31 in the dust box 25 forms a mesh that allows fly waste to pass but does not allow lint to pass therethrough.
Separation of lint and fluff is performed. One of the filters 33 has a mesh that prevents the fly cotton from passing therethrough, and prevents the fly cotton from entering the suction blower 26.
The fly waste is collected in the fly waste collection chamber 32. Here, the fly waste collected in the fly waste collection chamber 32 from the suction port 20 is reused as a part of the sliver S again. Further, when the worker enters and exits the dust box, the blower motor 34 in the suction blower 26 is used.
After the stop, it is possible from a door (not shown).

When the yarn splicing carriage 23 travels to the unit U where the yarn Y has been cut by the cutter 7 and arrives at the unit U, the rotation of the back roller 11 is restarted. Spinning side yarn end guide means (suction pipe) which does not show the discharged yarn end and the winding side yarn end
And the winding-side yarn end guiding means (suction pipe) guides each to the knotter 24 so that the above-mentioned two yarn ends are spliced. At the time of the above-mentioned splicing, the yarn traveling is stopped at the place where the splicing is performed, and when the yarn Y is sent from the spinning side, the delivery roller 8 is stopped.
Slack occurs between the thread and the splicing point.
Due to the suction force of the suction port 18, Y 'shown by a two-dot chain line in FIG.
To prevent the yarn from becoming entangled and twisting.

In FIGS. 1 and 3, throttle plates 15, 16, 17 provided at the ends of suction ducts D1, D2, D3 extending in the machine longitudinal direction are suction ducts D.
1, D2, D3 can be opened and closed freely in the direction (vertical direction). Further, the ducts D1, D2, D3 are all opened and closed from above. This is because the fly waste trying to flow into the dust box 25 is the suction duct D1,
Since the fly runs below D2 and D3, fly waste is drawn at the connection with the dust box 25 by the squeezing plates 15, 16,.
17 to prevent deposition. When adjusting the air flow rate (negative pressure) of each duct D1, D2, D3,
The operator determines an appropriate negative pressure value based on the indicated value of the negative pressure measuring devices 27, 28 and 29, and after stopping the blower motor 34,
The aperture plates 15, 16, 17 are moved up and down. As a result, it is possible to confirm the change in the negative pressure value before and after the position of the aperture plates 15, 16, 17 is changed.
Alternatively, a control means for automatically adjusting the position of the throttle member by reading the above-described negative pressure instruction value and instructing control of the position adjustment of the throttle member based on the read value may be used. Good.

In the blower box 2, the blower
The rotation of the impeller (not shown) causes the impeller (not shown) to rotate, and the impeller rotates to collect fly dust and dust from the dust box 25 and to suction the slack from the suction port 18. Is caused to occur.

Here, in principle, all the ducts D1, D
2. The aperture plates 15, 16 and 17 of D3 are fully opened. However, if slivering is likely to occur during piecing due to factors such as the raw material of the sliver S and the temperature and humidity around the spinning machine, the operator must First, the blower motor 34 in the suction blower 26 is temporarily stopped after measuring the indicated values of the negative pressure measuring devices 27, 28 and 29, and then enters the dust box 25 from a door (not shown) to remove the side plate 30. Open it so that it can be shifted through the opening. Next, the throttle plate 15 at the end of the suction duct D1 communicating with the suction port 18 shown in FIG. 1 is fully opened, and the suction force of the other suction ports 19 and 20 does not hinder the function. Negative pressure measuring device 2 measured above
The lower ends of the throttle plates 16 and 17 at the ends of the suction ducts D2 and D3 are shifted downward as shown by the two-dot chain line in FIG. The cross-sectional area in the dust box 25 is reduced, and the air flow rate is reduced. By adjusting the air flow balance as described above, the air flow rate of the suction duct D1 is increased within the range of the suction force to increase the air flow rate of the suction port 18 despite the limited suction force of the blower box 2. The suction force can be enhanced, and the yarn Y can be reliably sucked without any slack.

In addition, in the above-described piecing, abnormalities such as stiffness do not occur. However, even when the sliver S is made of material that generates remarkable fly wool, the operator must first use the negative pressure measuring device 27, After measuring the indicated values of 28 and 29, the blower motor 34 in the suction blower 26 is temporarily stopped, and then enters the dust box 25 from a door (not shown) to open the side plate 30 and shift from the opening. So that Next, contrary to the above case, the throttle plates 16 and 17 at the ends of the suction ducts D2 and D3 communicating with the suction ports 19 and 20 in FIG. The lower end of the throttle plate 15 at the end of the suction duct D1 is taken into account in FIG. 1 in a two-dot chain line while taking into account the measured value of the negative pressure measuring device 27 measured above in a range where the suction force does not impair the function. The shift operation is performed downward as shown by the arrow to reduce the cross-sectional area of the duct D1 in the dust box 25 to reduce the air flow rate. By adjusting the air flow balance as described above, similarly to the case where the suction force of the suction port 18 is strengthened, regardless of the fixed limited suction force of the blower box 2, The air flow rate of the suction ducts D2 and D3 is increased to increase the suction ports 19 and 20.
Can be strengthened, and the fly waste collection rate in the vicinity of the air injection nozzle 6 can be improved.

In any case, a mechanism for fixing the positions of the aperture plates 15, 16 and 17 at predetermined intervals, and a mechanism in the vicinity of the aperture plates 15, 16 and 17 are provided. By providing graduations provided along the moving directions of 16 and 17, the moving distance can be measured. In particular, in the case where the number of machines of the spinning machine is large, if positioning is performed using the scale of one of the drawing plates 15, 16, and 17, the other plurality of drawing plates 15, 16, and 17 can be positioned at the same position.

As described above, the suction ducts D1, D2, D
The cross-sectional area of each of the three ends is measured using the negative pressure measuring devices 27, 28,
A diaphragm plate 1 which is a diaphragm member based on the indicated value of 9
By raising and lowering 5, 16 and 17, it is possible to easily adjust the suction force of each of the suction ducts D1, D2 and D3 in accordance with the change in the balance of the air flow rate. Also, the throttle plates 15, 16, 17 may be provided only for required ones of the suction ducts D1, D2, D3.

[0025]

The present invention is configured as described above.
The following effects are obtained.

According to the first aspect of the present invention, the plurality of suction ducts arranged along the longitudinal direction of the machine have an opening for each unit, and the end of each suction duct is a common blower module. In the spinning machine having a configuration communicating with the suction box and the dust box, suction for adjusting the distribution ratio of the suction force in the duct among the plurality of suction ducts by changing the distribution ratio of the air flow rate among the plurality of suction ducts. By providing the force changing device, even when the blower has only a certain limited suction force, it is possible to easily change each suction force within the range of the suction force. In addition, it is possible to provide a suction force corresponding to various surrounding environments and various fiber bundle conditions as needed.

According to the second aspect of the present invention, a throttle member for changing the cross-sectional area of the duct is provided in the suction duct as a member for adjusting the air flow rate, and the cross-sectional area of the suction duct is reduced by the throttle member. Alternatively, by performing the adjustment to increase the sectional area of the specific duct, it is possible to easily change the sectional area of the specific duct even if the sectional area of the suction duct itself is limited. Force change can be realized with a simple structure.

According to the third aspect of the present invention, since the throttle member is provided at the connection portion between the suction duct and the common dust box, the throttle member is located in a range where the operator can reach. When the suction force is changed, after the blower motor is stopped, the door of the dust box is opened, and the air flow can be easily adjusted from inside the dust box. Become.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the inside and a peripheral portion of a blower box in a spinning machine according to an embodiment of the present invention.

FIG. 2 is a front view showing a machine base arrangement of the spinning machine according to the embodiment of the present invention.

FIG. 3 is a side view of the spinning machine according to the embodiment of the present invention.

[Explanation of symbols]

 2 Blower box 3 Machine frame 4 Bogie traveling space 15, 16, 17 Throttle plate 18, 19, 20 Suction port 23 Yarn splicer 24 Notter 25 Dust box 26 Intake blower 27, 28, 29 Negative pressure measurement Apparatus 34 Blower motor D1, D2, D3 Suction duct S Sliver SP1, SP2, SP3 Suction pipe Y, Y 'Spun yarn

Claims (3)

[Claims] A plurality of suction ducts arranged along the machine base longitudinal direction are provided with openings for each unit, and the ends of the suction ducts communicate with a common blower motor and dust box. In the spinning machine having, by changing the distribution ratio of the air flow rate among the plurality of suction ducts,
A spinning machine having a suction duct, wherein a suction force changing device for adjusting a distribution ratio of the suction force in the duct among the plurality of suction ducts is provided. 2. A spinning machine having a suction duct according to claim 1, wherein a throttle member for changing a sectional area of the duct is provided in the suction duct as a member for adjusting the air flow rate. 3. The spinning machine having a suction duct according to claim 2, wherein the throttle member is provided at a connection between the suction duct and a common dust box.