JPH0351323A - Device for uniformly feeding raw cotton - Google Patents

Abstract

PURPOSE:To prevent occurrence of unevenness of coarseness of sliver by periodical change of a raw cotton feeding amount by providing a specific pathway and the first and second cotton feeding boxes between blowing process and cotton worsting machine. CONSTITUTION:A feed roller 8 capable of variably converting number of rotation with the first inverter motor is arranged in the first cotton feeding box 4 connected to the raw cotton delivering side of a blowing machinery and pressure sensor 9 of pathway 6 equipped with a cotton feeding fan 5 is used as a converting means of the feed roller 8. An air releasing port 10 is opened on the upper wall face of the second cotton feeding box 7 as an operation means of the pressure sensor 9.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an apparatus for uniformly supplying raw cotton, and more specifically, the mixed batting process and the carding process are performed by a pneumatic pipe line equipped with a cotton feeding box. This invention relates to a means for equalizing the amount of raw cotton supplied in a connected raw cotton supply device.

[Conventional technology]

In order to make the spinning process continuous and unmanned, a pneumatic pipe with a cotton supply box connects the blending and carding processes, and the raw cotton opened in the blending and carding process is A cotton feeding system has been proposed in which the cotton is carried by the air flow flowing through the pneumatic pipe and is sequentially supplied to a plurality of carding machines.

[Problem to be solved by the invention]

In the above-mentioned conventional device, when a predetermined amount of raw cotton is supplied into a tower-shaped cotton supply box vertically installed in the carding machine (hereinafter referred to as a card), an appropriate detection means is activated. The feed roller of the main cotton supply box connected to the raw cotton sending side (mixed batting process side) of the pneumatic pipeline and the mixed batting box connected to this main cotton supply box The cotton machine is temporarily stopped, and when it is detected by the detection means that the raw cotton in the cotton supply box has decreased to a predetermined amount or less, the feed roller of the main cotton supply box and the mixing and batting machine are restarted. The OFF*I'4B method is adopted.

0N-OFF like this! When the 1111 method is used, the amount of raw cotton pneumatically conveyed through the pneumatic conduit into the cotton feeding box vertically installed on the card agreement changes in stages.

For this reason, the packing density and volume of raw cotton in the cotton feeding box fluctuate over time, and variations in the amount of raw cotton fed out cause uneven thickness in the sliver spun from the card.

Furthermore, if cotton clogging occurs in the pneumatic pipe for some reason, the cotton feeding ability is lost due to a decrease in static pressure, and accidents such as cotton clogging occur in the feed rollers of the main cotton feeding box.

The main object of the present invention is to provide a means for preventing the occurrence of uneven thickness of the sliver due to temporal fluctuations in the amount of raw cotton fed out, which was a problem in the conventional raw cotton feeding system using 0N=OF F braking. .

[Means to solve the problem]

As a means for solving the above problems, the present invention has the following features: (1) A first cotton supply box and a cotton supply fan are provided for supplying raw cotton air-conveyed in an open state from the mixing frame process to a carding machine. In the raw cotton supply device consisting of a pneumatic pipe and a plurality of second cotton supply boxes connected to the pneumatic pipe and installed vertically on the odor-containing side of the carding machine, the first A feed roller whose rotation speed is steplessly converted by an inverter motor is disposed in the cotton feeding box, and a change in pneumatic pressure is detected in the pneumatic pipeline as a rotation speed conversion means of the inverter motor. A pressure sensor is disposed on the upper wall surface of the second cotton supply box as an operating means for this pressure sensor, and the pressure sensor is configured to close and open according to an increase or decrease in the amount of raw cotton air conveyed from the pneumatic pipe. A uniform supply device for raw cotton, characterized by having a mesh-like or slit-like air outlet that repeats repeatedly.

(2) A first cotton supply box for supplying the raw cotton air-conveyed in an open state from the cotton blending process to the carding machine, a pneumatic pipe line equipped with a cotton supply fan, and this pneumatic pipe In a raw cotton supply device consisting of a plurality of second cotton supply boxes connected to a carding line and installed vertically on the back side of the carding machine table, the number of revolutions is controlled by an inverter motor in the second cotton supply box. A sortie/feed roller that is converted in a stepless manner is provided, and two or more sets of light emitting/receiving devices are installed in the raw cotton falling conduit below the sortie/feed roller as means for converting the rotation speed of the inverter motor. A uniform supply device for raw cotton, characterized in that it is arranged with intervals maintained. and (3) a first cotton supply box for supplying the raw cotton air-conveyed in an open state from the mixed batting process to the carding machine, a pneumatic pipe line equipped with a cotton supply fan, and this pneumatic supply box. In a raw cotton supply device consisting of a plurality of second cotton supply boxes connected to a carding line and installed vertically on the back side of the carding machine table, a first inverter motor is used to supply cotton in the first cotton supply box. A feed roller whose rotation speed can be changed steplessly is provided, and 1. A pressure sensor for detecting changes in pneumatic pressure is disposed as a rotational speed conversion means of the first inverter motor, and a pressure sensor for detecting changes in pneumatic pressure is disposed on the upper wall surface of the second cotton feeding box as a means for operating the pressure sensor. A mesh-like or slit-like air outlet is provided that repeatedly closes and opens depending on the increase or decrease in the amount of raw cotton air conveyed from the pipe, and a mesh-like or slit-like air outlet is provided in the second cotton feeding box by a second inverter motor. A sortie/feed roller whose rotational speed is changed steplessly is provided, and two or more sets are installed as rotational speed converting means for the second inverter motor in the raw cotton falling path below the sortee/feed roller. The present invention provides an apparatus for uniformly supplying raw cotton, characterized in that light receiving devices are arranged at predetermined intervals.

[Effect]

A feed roller whose rotational speed is steplessly converted by a first inverter motor is installed in the first cotton feeding box connected to the raw cotton feeding side of the cotton mixing machine, and the rotational speed of this feed roller is changed. As a means, a pressure sensor is disposed in a pneumatic conduit provided with a cotton feeding fan extending from the first cotton feeding box toward a second cotton feeding box vertically installed on the base of the card. On the other hand, as an actuation means for this pressure sensor, an air discharge port is opened in the upper wall surface of the second cotton feeding box, and the air pressure in the pneumatic pipeline detected by the pressure sensor flows into the second cotton feeding box. When a preset lower limit value is reached due to an oversupply of raw cotton or the like, the rotation speed of the first inverter motor is reduced.
The feed roller of the cotton feeding box is rotated at low speed,
Further, when the air pressure in the pneumatic pipeline detected by the pressure sensor reaches a preset upper limit value due to a lack of supply of raw cotton in the second cotton supply box, etc., the first inverter motor The feed roller of the first cotton feeding box is switched to a high speed rotation state by increasing the rotation speed of the first cotton feeding box. As a result, a predetermined amount of raw cotton is constantly supplied into the second cotton supply box under air conveyance, with the supply amount being varied steplessly.

Furthermore, two or more sets of light emitting and receiving devices are arranged in the second cotton feeding box at a predetermined interval, and the rotation speed of the sortie feed roller arranged in the second cotton feeding box is set to
The speed of the second inverter motor is changed steplessly by electrical signals sent from the two or more sets of light emitting/receiving devices, thereby making the amount of raw cotton supplied to the card uniform over time.

〔Example〕

FIG. 1 is a schematic front view of an example of an integrated unit of the apparatus of the present invention, FIG. 2 is a schematic front view of a pressure sensor, and FIG. 3 is a side view of a second cotton feeding box, with a portion thereof in cross section.

In these drawings, the raw cotton supply device (1) is filled with raw cotton (2) (2), which has been air-conveyed in an opened state from the mixing and batting process.
The first for supplying ... to card (3) (3) ...
a cotton supply box (4), a pneumatic pipe (6) equipped with a variable air volume cotton supply fan (5) driven by an inverter motor (not shown), and a pneumatic pipe (6) connected to the pneumatic pipe (6). A plurality of second cotton supply boxes (7) (7) are installed vertically on the back side of each card (3) (3)...
... are connected.

The first cotton supply box (4) is a tower-shaped container, and includes a carnet roller (8a) and a fluted roller (8b) whose rotational speed is changed steplessly by a first inverter motor (not shown) inside. ), and a feed roller (8) for the raw cotton (2) made of A pressure sensor (9) that detects a change in the pneumatic pressure of the raw cotton (2), (2), etc. is provided as a rotation speed converting means for the first inverter motor. Also,
As an operating means for this pressure sensor (9), a state in which the cotton is carried by the air flow from the pneumatic pipe (6) on the upper wall surface of each of the second cotton feeding boxes (7), (7)... Mesh-like or slit-like air outlet openings (10) (10) are provided that repeatedly close and open according to the increase or decrease in the amount of raw cotton (2) (2)... supplied by the air outlet. Furthermore, the first
In the figures and FIG. 3, reference number (11) indicates a bin beater with an opening bin that is disposed opposite to the circumferential surface of the feed roller (8) with a predetermined distance (gauge) maintained therebetween. ,(
12) shows a sortee feed roller rotatably supported in each second cotton feeding box (7). This sortie feed roller (12) is equipped with a continuously variable power source (not shown). A second inverter motor is connected and a corresponding sortie
Raw cotton (2) (2) below the feed roller (12)...
Two sets of light emitting/receiving devices (A) are provided on the dead weight fall path (18) as means for converting the rotation speed of the second inverter motor.
(B) are arranged vertically at predetermined intervals. In addition, in FIG. 3, (13) is a fiber opening roller with a blade, (14) is a cotton feeding fan, and (15) is a base end (15a).
), a diaphragm that repeats periodic vibrations (16)
(17a) (17b) is a vibration generator connected to the lower end of the diaphragm (15) on the back side of the dead weight fall path (18) of the raw cotton (2) (2)... (17a) (17b) )-- toward the card (3). The airflow generated by the activation of the cotton supply fan (14) is applied to the diaphragm (15) to prevent the raw cotton (2) from falling under its own weight (18).
(2) After pressing with a predetermined filling pressure, the mesh-like or slit-like air outlet (19) serves as a wave path when flowing out of the dead weight fall path (18) (19)...
・ is provided.

On the other hand, the pressure sensor (9) detects the static pressure of the air flow in the pneumatic pipe (6) between the raw cotton (2) (2) carried by the air flow and conveyed in the pneumatic pipe (6). It was installed for the purpose of detecting the upper and lower limits of pressure change, paying attention to the fact that the amount of... PsU, low voltage switch PS
By combining D and the pressure gauge (20),
It constitutes a rotation speed conversion means for the feed roller (8) of the first cotton feeding box (4).

Pneumatic tube by starting the cotton feeding fan (5)! (
6) A predetermined static pressure is generated in the air outlet (10) provided in the tower-shaped conduit (18a) at the top of the second cotton feeding box (7). Raw cotton (2
)(2)... is filled, the air outlet (10)
(10)... become closed, and the static pressure in the pneumatic pipe (6) drops to the lower limit value of the low pressure switch PSD set in advance.

When the low pressure switch PSD detects the lower limit value of the static pressure in the pneumatic pipeline (6), the first inverter motor changes from a high speed state to a steplessly variable speed state or to a stop state via a control circuit (not shown). The raw cotton (2) is switched from the first cotton supply box (4) to the pneumatic pipe line (6) and the second cotton supply box (7) through low-speed rotation or stoppage of the feed roller (8). )(2) Decrease the feed amount of... During this time, in the second cotton feeding box (7), the sort teeth/feed roller (12) is rotated by starting the second inverter motor, and the cotton feeding fan (14) is rotated by starting the second inverter motor.
) due to the air flow generated by the activation of raw cotton (2) (2
)... through downward filling and the vibration of the diaphragm (15) caused by the activation of the vibration generator (16), the fibers are opened from the upper part of the second cotton feeding box (7) to the gravity falling path (18). The raw cotton (2) (2)... is continuously fed in. The raw cotton (2) (2) filled in the dead weight falling path (18) with a predetermined packing density is moved by the delivery roller (1
Pass between 7a) (17b) and card (3)
The press roller (3a) is fed out while maintaining a substantially constant packing density.

In this way, from the second cotton feeding box (7) to the card (3)
As the raw cotton (2) (2)... is sent out, the raw cotton (2) (2) in the tower-shaped conduit (18a) above the dead weight fall path (18) and the sortie feed roller (12) The amount of ... decreases. Finally, the air outlet (
10) Raw cotton (2) (2)... to the bottom of (10)
The upper surface of the packed bed falls. As a result, the air outlet (1
0) (10)...The air flows out and the pneumatic pipe (
6) The static pressure inside the pump gradually rises to the preset upper limit value of the high pressure switch PSU. High voltage switch P
When the SU detects the upper limit value of the static pressure in the pneumatic pipe (6), the first inverter motor changes speed continuously from a low speed state or a stopped state to a high speed state via a control circuit (not shown). The cotton is fed from the first cotton feeding box (4) to the pneumatic pipe (
6) and the raw cotton (2) (2) to the second cotton feeding box (7).
)...increase the amount of feed.

In this way, a plurality of second cotton feeding boxes (7) (7
)... Raw cotton (2) (2)... is supplied substantially continuously at a substantially constant packing density by the stepless speed change of the feed roller (8) of the first cotton feeding box (4). be done.

In the device of the present invention, the second cotton feeding box (7)
The purpose is to further equalize the packing density and amount of the raw cotton (2) (2)... filled in the fall path (1 day) of the raw cotton (2) (2)... formed by its own weight. The number of rotations of the second inverter motor used as a drive source for the sortie feed roller (12) is continuously varied in a stepless manner. That is, in the dead weight fall path (18) of the raw cotton (2), (2), etc. formed below the sortie feed roller (12), a second inverter motor is installed as a stepless conversion means for the rotational speed of the second inverter motor. more than one set of light emitting and receiving devices,
For example, a light emitting/receiving path consisting of phototube devices A and B is arranged vertically at a predetermined interval, and the rotation speed of a second inverter motor and a sortie feed roller (12) driven by the second inverter motor. It constitutes a continuously variable transmission.

When the card (3) is operated, the delivery roller (17) is driven by the feed roller (not shown) of the card (3).
a) The raw cotton (2) (17b,) rotates and the raw cotton (2) (
2)... are continuously sent out toward the card (3) from the dead weight falling path (18). When the amount of raw cotton (2) (2)... in the dead weight falling path (18) decreases and the light emitting/receiving path of the phototube device B arranged below the dead weight falling path (18) becomes light receiving state. The second inverter motor is continuously changed from a low speed rotation state to a high speed rotation state via a control circuit (not shown), thereby causing the sortie feed roller (12) to rotate at a high speed. As a result, the feeding speed of the raw cotton (2) (2)... from the tower-shaped pipe (18a) to the dead weight fall path (18) increases.

On the other hand, when the light emitting/receiving path of the lower phototube device B becomes light-blocked due to the filling of raw cotton (2) (2)... into the dead weight fall path (18), the upper phototube device A becomes light-blocked. Until then, the sortie feed roller (12) is maintained at a low speed rotation state, and the feeding speed of the raw cotton (2) (2) .

The feeding amount of raw cotton (2) (2)... further increases, and the light emitting and receiving path of the upper phototube device A changes to raw cotton (2) (2)...
When the light is blocked due to the rise of the filling layer, the second inverter motor is temporarily switched from a low speed rotation state to a stopped state, and the sortie feed roller (12) stops. Since the steady feeding operation of the raw cotton (2) (2)... from the path (18) to the card (3) continues, the raw cotton (2) (2)... in the dead weight falling path (18) continues. The filling layer gradually decreases in height. Therefore, after a predetermined period of time has elapsed, the photocell device A
The light emitting and receiving path is switched to the light receiving state, and the second cotton feeding box (7) returns to the cotton feeding state under the continuously variable speed of the sortie feed roller (12).

While the raw cotton (2) (2)... is being sent out from the second cotton feeding box (7) to the card (3) according to the above procedure, the raw cotton (2) ( 2)
... includes a diaphragm (15) and a vibration generator (16).
, and the operation of the cotton supply fan (14), a predetermined filling pressure is applied. As a result, raw cotton (2), (2), etc. having uniform density are continuously supplied to the card (3).

In the above embodiment, an embodiment is described in which two sets of light emitting/receiving devices A and B are arranged in the raw cotton weight falling path (18) of the second cotton feeding box (7) to constitute a continuously variable transmission device. However, the scope of the rights of the present invention should not be construed in a limited manner based on this description, and many modifications can be implemented.For example, raw cotton (2) (2)... A sorties feed roller (1) is placed on the dead weight fall path (18).
As the stepless variable speed sensor means (2), it is also possible to arrange three or more sets of light emitting/receiving devices fA, B, C, . . . at a predetermined interval.

The light emitting/receiving devices jA, B and the control circuit connected thereto continuously change the rotational speed of the sortee feed roller (12) from a high speed rotation state to a low speed rotation state, and (12
), raw cotton (2) (2), which is pneumatically conveyed into the second cotton feeding box (7), is
... and the amount of raw cotton (
2) The operating conditions are adjusted so that the amounts of (2) and so on correspond in a substantially 1:1 relationship.

〔Effect of the invention〕

According to the present invention, fluctuations in the packing density of raw cotton in the cotton supply box due to ON-OFF control, which has been a problem with conventional pneumatic raw cotton supply devices, can be almost completely avoided. As a result, the amount of raw cotton fed from the cotton feeding box to the card becomes constant, which has a remarkable effect on the quantification of the spun sliver.

[Brief explanation of drawings]

FIG. 1 is a schematic front view of an example of an integrated unit of the apparatus of the present invention, FIG. 2 is a schematic front view of a pressure sensor, and FIG. 3 is a side view of a second cotton feeding box, with a portion thereof in cross section. (1) -- Uniform supply device for raw cotton, (2) -- Raw cotton, (3) -- Card, (4) -- First cotton feeding box, (5) -・Cotton feeding fan, (6)...-Pneumatic pipe line,
(7) --- Second cotton feeding box, (8) (9) (12) (A) (18) --- Feed roller, --- Pressure sensor, (10) --- Air discharge port, - Sorteeth feed roller, (B) -m- Light emitting and receiving device, - Self-weight falling path.

Claims (3)

[Claims] (1) A first cotton supply box for supplying the raw cotton air-conveyed in an open state from the mixing frame process to the carding machine, a pneumatic pipe line equipped with a cotton supply fan, and this pneumatic pipe In the raw cotton supply device, which consists of a plurality of second cotton supply boxes that are connected to the carding machine and installed vertically on the back side of the carding machine table, the number of rotations is controlled by an inverter motor in the first cotton supply box. A feed roller is disposed to convert the pneumatic pressure steplessly, and a pressure sensor for detecting changes in the pneumatic pressure is disposed in the pneumatic pipeline as means for converting the rotational speed of the inverter motor. As an actuating means for the sensor, a mesh-like or slit-like air outlet is provided on the upper wall surface of the second cotton feeding box, which repeatedly closes and opens according to an increase or decrease in the amount of raw cotton air conveyed from the pneumatic pipe. A uniform supply device for raw cotton, characterized by the following: (2) A first cotton supply box for supplying the raw cotton air-conveyed in an open state from the cotton blending process to the carding machine, a pneumatic pipe line equipped with a cotton supply fan, and this pneumatic pipe In a raw cotton supply device consisting of a plurality of second cotton supply boxes connected to a carding line and installed vertically on the back side of the carding machine table, the number of revolutions is controlled by an inverter motor in the second cotton supply box. A sort-ease/feed roller that can be converted in a stepless manner is provided, and two or more sets of light emitting/receiving devices are installed in the raw cotton fall conduit below the sort-ease/feed roller as means for converting the rotation speed of the inverter motor. A uniform supply device for raw cotton, characterized in that it is arranged with intervals maintained. (3) A first cotton supply box for supplying the raw cotton air-conveyed in an open state from the cotton blending process to the carding machine, a pneumatic pipe line equipped with a cotton supply fan, and this pneumatic pipe In the raw cotton supply device, which consists of a plurality of second cotton supply boxes that are connected to A feed roller whose number is changed steplessly is disposed, and a pressure sensor is disposed in the pneumatic pipe line to detect changes in pneumatic pressure as rotation speed converting means of the first inverter motor, Further, as an operating means for this pressure sensor, a mesh-like or slit-like structure is provided on the upper wall surface of the second cotton feeding box, which repeatedly closes and opens in accordance with an increase or decrease in the amount of raw cotton air conveyed from the pneumatic pipe. An air outlet is provided, and
In the second cotton supply box, there is a sortie whose rotational speed is changed steplessly by a second inverter motor.
In addition to installing a feed roller, this sortie
An apparatus for uniformly supplying raw cotton, characterized in that two or more sets of light emitting and receiving devices are disposed at a predetermined interval on the raw cotton falling path below the feed roller as rotation speed converting means for the second inverter motor.