JP3242302B2 - Branch feeder in circulating feeder for raw fiber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a branch feeder for supplying raw fiber, and more particularly, to a raw material for receiving an opened raw fiber which is conveyed by an air stream, supplying the raw fiber to a series of cards, and receiving the surplus cotton. The present invention relates to a branch feeder in a fiber circulating transfer supply device.

[0002]

2. Description of the Related Art Recently, in spinning factories, high-mix low-volume production has become the mainstream, and the production capacity of cards has been improved. One main feeder has several cards (for example, four). Is used. FIG. 4 shows how to supply the raw fibers at that time. The raw fiber circulating transfer supply device 50 mixes and spreads a plurality of raw fibers with a main feeder 51, transfers the mixed raw fibers to a switching damper 53 via an airflow through a main duct 52, and switches the two branches by the switching damper 53. Feeders 54a, 54b
(Hereinafter simply referred to as simply 54) through supply ducts 55a and 55b (hereinafter simply referred to as simply 55), and the branch feeder 54 is connected to the card C1 through branch ducts 56 and 57, respectively. , C2, C
3. Tower hoppers H1 to H4 (hereinafter collectively referred to simply as C) which are opposed to C4 (hereinafter collectively referred to as C).
Simply called H). The excess fiber distributed to each card is returned to the branch feeder 5 via the return duct 58.
4a and 54b.

The branch feeders 54a and 54b have the same structure, and as shown in FIG. 5 and subsequent figures, a mechanism 60 for receiving both fibers of the feed fiber from the main feeder 51 and the return fiber from the card C; A separating member 61 constituted by a cage or the like for separating airflow, a reserve tank 62 for storing the separated opened fibers, and a fiber opening mechanism 6 for sequentially feeding out the fibers in the reserved tank 62 and opening the fibers again.
3. A delivery mechanism 64 for supplying the opened fibers to each card.

As shown in FIG. 6, a receiving mechanism 60 has a main duct 67 and a sub duct 68 tangentially mounted at positions opposed to a headed cylindrical portion 66 having an open lower portion. Supply duct 5 connected to
5 and the auxiliary duct 68 connects a return duct 58 for the surplus of the raw fiber supplied to each card C.

The opening mechanism 63 is provided with the reserve tank 62.
Roller 70 and Spreading Beater 7 Provided Below
The accumulated cotton fed by the feed roller 70 is opened again by the beater 71 and dropped into the hopper 72.

The hopper 72 is connected to the delivery mechanism 64. The delivery mechanism 64 includes a suction blower 75, a distribution mechanism 76 connected to an outlet side thereof, and a distribution pipe 77 connected to the two branch ducts 56 and 57. Blower 7
Reference numeral 5 denotes a cotton-type blower which does not catch when the cotton is sucked.
8a and 78b are formed, the branch ducts 56 and 57 are connected to the respective branch pipes, and the lower part of the distribution pipe is provided with a distribution mechanism 76.
It is open to.

The distributing mechanism 76 is provided with a rotatable distribution pipe 80 and is rotated by a drive motor 82 via a gear member 81. The lower part is always kept on the same axis as the outlet of the blower 75. The branch pipes are alternately communicated with each other, and the details thereof are the same as, for example, Japanese Patent Publication No. 50214/1990.
7 is supplied intermittently with the carrier airflow, so that the opened cotton can be effectively distributed to the tower hopper H for the card C connected to the branch duct.

The tower hoppers H and the procedure for supplying the opened cotton to the cards from the hoppers have a well-known structure, and a description thereof will be omitted.

[0009]

In the receiving mechanism 60 of the branch feeder 54, when the transfer airflow is supplied together with the raw material fibers by switching of the switching damper 53, and when the conveying airflow is stopped, the receiving mechanism 60 is alternately performed. However, excess cotton is always supplied from the return duct 58 from the card C together with the return airflow. Therefore, the sub duct 68 into which the return airflow flows
There are times when interference occurs with the airflow from the main duct 67 and times when interference does not occur. The procedure is shown in FIG. FIG. 7 shows a state where the carrier airflow A is supplied from the main duct 67. The airflow is usually stronger than the return airflow B from the sub duct 68, so that the return airflow B is subject to resistance. Further, when the supply of the transport airflow A from the main duct 67 is interrupted, the above resistance is not received. The presence or absence of this resistance causes a change in the static pressure (for example, about 10 mm) with respect to the tower hopper H provided opposite the card C, which affects the density of the accumulated cotton, causing a problem such as causing fluctuations in the spun gelen. .

In view of the above, an object of the present invention is to provide a branch feeder in which the return airflow in the receiving mechanism is not affected by the presence or absence of the supply airflow from the main duct.

[0011]

In order to achieve the above-mentioned object, a branch feeder in the apparatus for circulating and transferring raw material fibers of the present invention transports the opened raw fiber from an air flow from a main feeder and selects a branch feeder. In the circulating and feeding apparatus of the spread fiber, which feeds and distributes and supplies the plurality of cards to the plurality of cards by the carrier airflow from the branch feeder, and returns the surplus fiber to the branch feeder, the split feed fiber is supplied to the branch feeder. A receiving mechanism including a main duct and a sub duct connected to a surplus fiber return duct from the card is provided, and the receiving mechanism includes the main,
The sub duct is spirally formed around the cylindrical portion at a position of 180 ° with respect to the vertical cylindrical portion, and is inclined downward along the cylindrical portion, and the lower opening is located on the opposite side with respect to the cylindrical portion. And the airflow flowing through the main and sub ducts is prevented from interfering with each other.

In the present invention having the above structure, the carrier airflow flowing from the main duct and the airflow from the sub duct connected to the surplus fiber return duct from the card are separated in the receiving mechanism. Therefore, the return airflow flowing from the sub duct is not affected by the presence or absence of the transport airflow from the main duct. That is, there is no change in the static pressure in the tower hopper provided opposite the card, and no fluctuation occurs in the spun gel.

[0013]

FIG. 1 is a block diagram showing an embodiment of the present invention.
3 to FIG. This branch feeder 1 is similar to the conventional example in that the feed fiber from the main feeder 51 and card C
Receiving mechanism 2 for returning the two fibers from the fiber, a separating member 3 composed of a cage or the like for separating the spread fiber and the carrier airflow, a reserve tank 4 for storing the separated spread fiber, and this reserve tank. An opening mechanism 5 for sequentially feeding out the fibers in 4 and opening the fibers again, and a sending-out mechanism 6 for supplying the opened fibers to each card are provided. The structure other than the receiving mechanism 2 is the same as that of the conventional example, and the same components are denoted by the same reference numerals and description thereof will be omitted.

As shown in FIGS. 1 and 2, the receiving mechanism 2 is connected to the main duct 10 connected to the supply duct 55 for supplying the spread fiber through the switching damper, and to the excess fiber return duct 58 from the card. The sub duct 11 and the vertical cylindrical portion 12 provided at the center thereof are sandwiched at a position of 180 ° in a spiral shape at least 90 ° or more around the cylindrical portion, and are respectively inclined downward along the cylindrical portion. The lower opening is formed on the opposite side of the cylindrical portion 12.

Accordingly, the main duct 10 and the sub duct 11
As shown in FIG. 3, the airflows A and B flowing through the cylindrical portion 12 are spirally formed on the opposite side of the cylindrical portion 12 downward, so that the two airflows do not interfere with each other.

[0016]

As described above, according to the present invention, the mechanism for receiving both the feed fiber from the main feeder provided in the branch feeder and the return fiber from the card is provided by the main duct for introducing the feed fiber. And the return fiber introduction sub-duct from the card and a spiral around the vertical cylindrical portion 12 around the vertical cylindrical portion 12 at 180 °,
In addition, since the lower opening is formed on the opposite side of the cylindrical portion 12 by inclining downward along the cylindrical portion, the two airflows do not interfere with each other, and therefore, the two airflows do not interfere with each other. The return airflow from the card is not affected by the presence or absence of the airflow, thereby preventing pressure fluctuations on the tower hopper opposed to the card, and preventing the spinning fleece on the card from fluctuating. .

[Brief description of the drawings]

FIG. 1 is an overall vertical explanatory view of a branch feeder of the present invention.

FIG. 2 is a plan view of a branch feeder receiving mechanism.

FIG. 3 is an explanatory diagram of an air flow in the receiving mechanism.

FIG. 4 is an explanatory view of a device for circulating, transferring and supplying the spread fiber.

FIG. 5 is an overall vertical sectional view of a conventional branch feeder.

FIG. 6 is a perspective view of a receiving mechanism of the branch feeder.

FIG. 7 is an explanatory diagram of an airflow interference state in the branch feeder receiving mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Branch feeder 2 Receiving mechanism 10 Main duct 11 Secondary duct 12 Cylindrical part 55 Supply duct which supplies opening fiber 58 Return duct

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D01G 23/02 D01G 15/40 D01G 23/08

Claims (1)

(57) [Claims] 1. The opened fiber is transported from a main feeder by air flow, selectively supplied to a branch feeder, distributed and supplied to a plurality of cards by a transport air flow from the branch feeder, and excess fiber is returned to the branch feeder. In the apparatus for circulating and feeding the spread fibers, the branch feeder is provided with a receiving mechanism including a main duct that supplies the spread raw fibers and a sub duct that is connected to a surplus fiber return duct from the card. The receiving mechanism may be configured such that the main and sub ducts are spirally wound around the cylindrical portion at a position of 180 ° with respect to the vertical cylindrical portion, and each of the ducts is inclined downward along the cylindrical portion. Are formed on opposite sides of the cylindrical portion to prevent interference between the respective air flows flowing through the main and sub ducts. Branch feeder in the feed device.