JPH10183429A - Apparatus for supplying stock fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for pneumatically dividedly feeding opened stock fibers, carried by pulsed air to a number of cards through fiber carrying ducts, which solves difficulties in effectively pulsing carrier air, encountered in the conventional apparatus which pulses carrier air merely by ejecting pressurized air intermittently through nozzles installed in the ducts. SOLUTION: This apparatus is equipped with a mechanism for pulsing carrier air at the stock fiber supply side in a fiber carrying duct, the mechanism being equipped with a nozzle body 3 installed in the fiber carrying duct to eject pressurized air and a solenoid on-off valve mechanism 5 to open/close a pressurized air supply circuit for the nozzle body 3, where the nozzle body 3 is provided with a throat and pressurized air ejection hole for the throat, and the solenoid on-off valve 5 is provided with an open-close interval regulating circuit to regulate time intervals for intermittent supply of pressurized air and a mechanism to control quantity of ejected air, in order to regulate open/close timing and manner of supplying pressurized air to the nozzle section, and also to regulate pulse cycles and pressure increasing/decreasing modes, resulting from ejection of pressurized air into carrier air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a raw fiber feeding apparatus for distributing and feeding raw fibers sent from a cotton mixing machine in a spinning factory to a plurality of cards via a common conveying duct.

[0002]

2. Description of the Related Art When distributing and supplying to a plurality of cards via the above-described common transport duct, it is necessary to uniformly distribute the cards to a tower hopper attached to each card. A method of repeating transportation and falling is employed. As the pulsation imparting means, for example, there is one disclosed in Japanese Patent Publication No. 50214/1990. The outline is shown in FIG.

[0003] The raw fiber supply device 50 opens the fiber by a fiber opening mechanism 51 for receiving the raw fiber sent from the mixed cotton wool machine, and feeds the raw fiber to a distribution pipe 52 attached to a transport blower 53 by a distribution pipe driving motor. 58 is rotated so as to be alternately fed into the plurality of transport ducts 54a and 54b. The transport ducts 54a and 54b have their ends connected to tower hoppers TH provided on a plurality of cards C, respectively. 55a,
55b is a feed roller, 56 is a fiber opening mechanism such as a beater, 5
Reference numeral 7 denotes a feed funnel.

A distribution mechanism 60 is provided at an appropriate position of the transport blower 53, for example, at a discharge port. The distribution mechanism 60 is driven by a drive motor 58 provided at a distribution pipe drive mechanism 61 to center the axis of the discharge port of the blower 53. Is rotated, and the opened fiber material is alternately supplied to the conveying ducts 54a and 54b. As a result, the discharge port is moved to the transfer duct 5
When the raw fiber is supplied to the feed duct 4a, not only the raw fiber is not supplied to the other transport duct 54b, but also the suction action is exerted in the duct, the air flow in the transport duct 54b stops, and The raw material fibers fall into the tower hopper TH connected to the duct 54b, and are evenly distributed.

[0005]

According to the above structure, the pulsation cycle of the raw fiber supply can be changed by changing the rotation speed of the distribution pipe driving motor, but fine adjustment thereof is difficult, and the distribution mechanism is difficult. The structure is complicated. Also,
By rotating the distribution pipe, the raw material fibers are alternately distributed and supplied to the pair of transport ducts, so that there is a problem that pulsation cannot be given to one transport duct. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to make it possible to reduce the amount of ejected air and adjust the switching speed.

[0006]

According to a first aspect of the present invention, there is provided a raw material fiber supply apparatus for distributing and supplying an opened fiber to a plurality of cards via a common conveying duct. In the fiber supply device, on the raw fiber supply side of the transport duct, an air mover that imparts pulsation to the transport airflow is provided, and suction transport of the raw fibers by an ejector effect,
The pulsation cycle is regulated for distribution and supply.

[0007] Since the raw material fiber supply device of the present invention having the above-described configuration is provided with an air mover, the raw material fiber is sucked and transported by the ejector effect of the air mover.
The raw fibers fed from the cotton blending machine can be distributed and supplied to the card without a transport fan, and the pulsation cycle for distribution and supply can be easily regulated.

According to a second aspect of the present invention, an air mover includes a pressurized air jet nozzle body provided in a transfer duct, and an electromagnetic opening / closing valve mechanism provided in a pressurized air supply circuit for the nozzle body. It has a throat portion and a pressure air ejection groove for the throat portion, and the electromagnetic on-off valve mechanism intermittently controls the pressure air supply to the nozzle body and regulates the supply time interval.

Since the air mover is provided with the nozzle body and the electromagnetic opening / closing valve mechanism, the pulsation can be easily controlled by the electromagnetic opening / closing valve mechanism to regulate the intermittent supply of the pressurized air and to adjust the fluctuation of the increase / decrease in the amount of the pressurized air. be able to.

According to a third aspect of the present invention, the pressure air jet nozzle main body has an annular pressure air jet groove formed in a throat and a front surface thereof.

According to the present invention having the above structure, the diameter of the throat portion of the nozzle portion can be increased by forming the pressure air ejection nozzle body and the annular pressure air ejection groove on the front surface thereof. .

According to a fourth aspect of the present invention, the opening / closing interval regulating circuit of the electromagnetic opening / closing valve mechanism mainly includes a timer capable of adjusting an opening / closing time of the opening / closing valve.

According to the present invention having the above structure, the opening / closing time interval of the on-off valve can be easily adjusted.

According to a fifth aspect of the present invention, the mechanism for controlling the amount of air jetted from the electromagnetic on-off valve mainly includes a damper mechanism having an adjusting means for adjusting the opening and closing speed of the on-off valve. Is adjustable.

According to the present invention having the above-described structure, by connecting a damper mechanism having an opening / closing speed adjusting means to the electromagnetic opening / closing valve, it is easy to adjust the opening / closing speed of the opening / closing valve, that is, the increasing / decreasing speed of the pressure air supply amount. It is.

[0016]

1 and 2 show a first embodiment of the present invention. The raw material fiber supply device 1 of the present invention includes a transport duct MD for transporting the spread fiber fed from the mixing opener OP or the like to a tower hopper TH provided for each of the plurality of cards C. Is provided with an air mover 2. RD indicates a return duct for surplus fibers, and the surplus fibers are returned to the mixing opener OP.

The air mover 2 has a nozzle body 3 and
An electromagnetic on-off valve mechanism 5 for regulating the supply of pressurized air provided in the pressurized air supply circuit 4 for the nozzle body is provided. The nozzle body 3 includes a cylindrical housing 6, a nozzle portion 7 formed on the inner surface of the housing, and a pressure air supply hole 8 attached to the housing 6.
And a pressure air ejection groove 9 for the nozzle portion 7. The nozzle portion 7 includes a throat portion 7a, and a throat portion 7b having a triangular cross section following the throat portion 7a. An annular air reservoir 10 is formed on the outer periphery, a pressure air supply hole 8 is opened in the annular air reservoir 10, and a pressure air ejection groove 9 is formed in the air reservoir 10.
It is configured with a fine gap formed between the throat and a guide ring 11 attached to the front of the throat. That is, the pressurized air blown into the air reservoir 10 from the pressure air supply hole 8 is ejected rearward (card side) along the throat 7a from the ejection hole 9 of the fine gap as indicated by an arrow. By setting the guide ring 11 side to a negative pressure as compared with the portion 10, the raw material fibers are conveyed, and the pulsation applying mechanism and the air conveying mechanism for applying the pulsation by the electromagnetic on-off valve mechanism 5 are provided.

The electromagnetic on / off valve mechanism 5 includes an opening / closing interval regulating circuit 14 for controlling the energizing time to an electromagnetic coil 13 for opening / closing the on / off valve 12, and an ejection air amount control mechanism 15 for adjusting the opening / closing speed. Prepare. The opening / closing interval regulating circuit 14 mainly includes a so-called timer, which repeats the pressurized air supply time and the stop time, and allows the time interval to be arbitrarily adjustable. The blow-out air amount control mechanism 15 is mainly composed of a damper mechanism connected to the on-off valve 12, and the damper mechanism 15 is provided with adjusting valves 16a and 16b and a check valve 17 on air suction / exhaust pipes on both sides of the cylinder as adjusting means.
a and 17b. Thus, the opening / closing speed of the on-off valve 12 can be adjusted, and the state of jet of the compressed air can be adjusted to an arbitrary shape such as a rectangular wave, a sine curve, or a trapezoidal wave.

In the above configuration, the transport duct MD includes:
By providing the air mover 2, pressurized air is intermittently blown, and pulsation occurs in the transport airflow. When pressurized air is blown into the air mover 2, a suction force is generated between the air mover 2 and the mixing opener OP, and the spread fibers fed from the mixing opener OP are transferred to a plurality of cards via the transport duct MD. C is transported to a tower hopper TH provided for C. At this time, the ejected compressed air is ejected rearward along the throat 7a, so that the amount of the air is small and the ejector effect can be sufficiently exhibited. At this time, by adjusting the adjusting valves 16a and 16b of the ejection air amount control mechanism 15 and the opening / closing interval adjusting circuit 14, the shape of the pulsation is adjusted together with the adjustment of the cycle time.
It can be a rectangular wave, a sine curve, a trapezoidal wave, or the like.

FIG. 3 shows a second embodiment. In the raw material fiber supply device 20 of the present embodiment, a plurality of (four in the illustrated example) branch ducts BD1 to BD are directly connected to one main feeder MF.
D4 is branched and connected, each branch duct is connected to tower hoppers TH provided on a number of cards C, and each branch duct BD is provided with the air mover 2 of the present invention. RD1 and RD2 indicate return ducts, respectively, and surplus fibers are returned to the mixing opener OP or the main feeder MF. The rest is the same as the first embodiment, and the description is omitted.

FIG. 4 shows a third embodiment. The raw fiber supply device 30 of the present embodiment transfers the spread fibers transferred from the main feeder MF to one or a plurality of branch feeders BF1 and BF2 (in the example shown in the drawing, two main feeders MD1 and BF2). The distribution and supply are performed via the MD2, and a plurality (two in the example in the figure) of branch ducts BD1, BD2, BD3, and BD4 (hereinafter collectively referred to simply as BD) are branched and connected from each branch feeder, and each branch is connected. The duct connects the tower hoppers TH provided on a large number of cards C, and the air mover 2 of the present invention is attached to each of the branch ducts BD. RD1 and RD2 indicate return ducts, respectively, and surplus fibers are returned to the branch feeder BF. The branch feeder BF
1, BF2 alternately feeds the spread fibers sent from the main feeder MF to two rows of transport ducts using a rotating distribution pipe provided in a transport fan. Thus, when the discharge port supplies the raw material fiber to one of the conveying ducts, not only the raw material fiber is not supplied to the other conveying duct, but also the suction action is exerted inside this duct, and the air flow is reduced. Stops, the raw material fibers fall on the tower hopper connected to the transfer duct, and perform even distribution.
Others are the same as the previous example, and the description is omitted.

[0022]

As described above, according to the present invention, when the spread fiber is sucked, transported and distributed to the tower hopper provided on each card, it is provided in the transport duct as means for imparting pulsation to the transport air flow. Equipped with a throat formed in the nozzle body and an ejection hole for ejecting pressurized air to the throat. Can be reliably provided. According to a second aspect of the present invention, there is provided an electromagnetic opening / closing valve for providing pulsation to a pressure air supply pipe for an ejection hole, intermittently supplying pressurized air to the ejection hole and regulating the supplied pressure air. Since a mechanism is provided, the supply of pressurized air can be intermittently performed by the valve mechanism, and its opening / closing cycle and the amount of ejected air can be controlled. According to the third aspect of the present invention, the ejection hole has an annular pressure air ejection groove formed on the front surface of the throat, so that the ejector effect can be obtained even if the throat has a large diameter. Therefore, it is possible to reduce the passage resistance in the transport airflow. According to the fourth aspect of the present invention, the electromagnetic on-off valve includes an opening / closing interval regulating circuit for arbitrarily changing a shape of a pressure air ejection cycle by opening / closing the valve. Changing the time cycle can be done very easily. According to the fifth aspect of the invention, the electromagnetic on-off valve is provided with an ejection air amount control mechanism mainly including a damper mechanism for adjusting the opening and closing speed, so that the opening and closing speed of the electromagnetic valve can be adjusted. The variation is rectangular, sine curve,
Alternatively, the shape can be an arbitrary shape such as a trapezoidal shape.

[Brief description of the drawings]

FIG. 1 is an overall explanatory view of a raw fiber supply device of the present invention.

FIG. 2 is an explanatory diagram of an air mover that is a main part of the present invention.

FIG. 3 is an overall explanatory view of a raw material fiber supply device when a transport duct is a plurality of branch ducts.

FIG. 4 is an explanatory view of a raw material fiber supply device when a plurality of branch ducts are used as a transport duct, and a branch feeder is provided for each of the branch ducts.

FIG. 5 is a schematic explanatory view of a conventional raw material fiber supply device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Raw material supply apparatus 2 Air mover 3 Nozzle main body 5 Electromagnetic opening / closing valve mechanism 7 Nozzle part 7a Throat part 9 Pressure air ejection groove 14 Opening / closing interval adjustment circuit 15 Injection air amount control mechanism

Claims (5)

[Claims] 1. A material fiber supply device for distributing and supplying an opened material fiber to a plurality of cards via a common conveyance duct, wherein an air for pulsating a conveyance airflow is provided on the material fiber supply side of the conveyance duct. A raw fiber supply device comprising a mover and regulating a pulsation cycle for inhaling and transporting the raw fiber by an ejector effect and distributing and supplying. 2. The air mover includes a pressurized air jet nozzle main body provided in a transfer duct, and an electromagnetic on-off valve mechanism provided in a pressurized air supply circuit for the nozzle main body.
2. The nozzle body according to claim 1, wherein the nozzle body has a throat and a pressure air ejection groove for the throat, and the electromagnetic opening / closing valve mechanism intermittently controls the pressure air supply to the nozzle body and regulates a supply time interval. Raw fiber supply equipment. 3. The raw material fiber supply device according to claim 2, wherein the pressure air jet nozzle body has an annular pressure air jet groove formed in a throat and a front surface thereof. 4. An opening / closing interval regulating circuit of an electromagnetic on / off valve mechanism,
The raw material fiber supply device according to claim 2, characterized in that the raw material fiber supply device is mainly configured with a timer capable of adjusting the opening and closing time of the on-off valve. 5. A control mechanism for controlling the amount of air discharged from an electromagnetic on-off valve mainly includes a damper mechanism provided with an adjusting means for adjusting an opening and closing speed of the on-off valve, and the opening and closing speed of the electromagnetic valve can be adjusted by the control mechanism. The fiber supply device according to claim 2, wherein: