JP2859076B2 - Device for collecting and removing cotton wool on cards - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fiber waste such as neps, contaminants, short fibers and the like accumulated under a machine stand of a card or a cotton blending machine (hereinafter, simply referred to as "card"). In this regard, the present invention relates to a device for collecting and discharging fallen cotton to a card that collects and discharges the blown cotton to the machine base using compressed air.

[0002]

2. Description of the Related Art As an apparatus for collecting and transporting fallen cotton accumulated under the card base, for example, a conveyor having a width of the base is laid, and the conveyor is periodically rotated and sent out to the base 1 side. There is a method of removing by suction. However, this device has a problem that a failure is likely to occur and maintenance is extremely troublesome. For this reason, an ejection nozzle for ejecting compressed air is arranged on the machine base side, and a suction duct having a long groove corresponding to the ejection nozzle is arranged on the other side, and compressed air is ejected from the ejection nozzle at predetermined time intervals and dropped. There has been proposed a device for collecting and transporting cotton wool in which cotton is blown to the other side and suctioned by a suction duct. In this apparatus, the ejection nozzle normally swings by a swinging means to blow off the entire width of the machine base. As the swing mechanism, a rotary actuator is usually used (for example, see Japanese Utility Model Publication No. 4-14459).

[0003]

By the way, low-speed gently swinging is preferable for blowing off cotton swabs, but the rotary actuator is suitable for high-speed operation, but performs smooth operation at low-speed operation. Is unsuitable for Further, the switching valve for switching the compressed air supplied to the actuator that performs the swinging motion of the ejection nozzle is operated at regular time intervals. There are problems such as short blowing time and poor blowing efficiency. For this reason, means for electrically detecting when both dead points are reached has been attempted, but there is a problem that a failure due to cotton fall is apt to occur, and that the occurrence of spark or the like sometimes causes a fire.

[0004] It is an object of the present invention to provide a device for collecting and discharging fallen cotton to a card which can perform a low-speed and smooth swing motion without using an electric circuit.

[0005]

In order to achieve the above-mentioned object, the present invention provides a device for collecting and discharging cotton wool on a card, which is provided below a doffer of the card and which is dropped by compressed air supplied from a compressed air supply pipe. Collecting and transporting the cotton wool to a card having a cotton wool blowing means for blowing cotton and a cotton wool suction / carrying means arranged below the take-in roller for sucking the blown cotton wool and transferring the cotton wool to the dust collecting device. In the apparatus, the lint blowing means comprises a compressed air jet nozzle and a swinging mechanism for oscillating the nozzle, the swinging mechanism comprises an air cylinder, and a pair of compressed air for the air cylinder. A pressure detection sensor for detecting the pressure of the supply / discharge connection pipe, and a switching valve for supplying / discharging air to / from the air cylinder, wherein the switching valve is an air-operated type; An air generation structure that operates the switching valve non-electrically via a switching valve operation circuit, detects when the piston of the air cylinder reaches both dead centers, and operates the switching valve by the generated air pressure. I do.

[0006]

[Function] As an apparatus for collecting and discharging the lint of each card, the ejection nozzle for blowing the lint is swung by an air cylinder, and the compressed air switching valve for the air cylinder is air-operated. Reaches the dead center at both ends, this is detected by the pressure detection sensor of the non-electrical working air generation structure, and the switching valve is switched.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a device for collecting and transporting fallen cotton from a card according to the present invention.

In FIG. 1, the card C1, C2,...
An apparatus A for collecting and transporting fallen cotton is provided, which is provided with the fallen cotton swab suction and carry-out means 40. Then, a large number of cards, for example, four cards C1 to C4, C5 to C8,.
Are divided into card groups CA, CB... (Hereinafter collectively referred to simply as “card group CG”), and are connected to the compressed air main supply pipe 1 for each card group C. And the compressed air branch supply pipe 1 connected to the cotton litter blowing means 10
a, 1b... and a main suction duct 2 provided with a dust collecting device DF
Are connected, and the branch suction ducts 2a, 2b,... Solenoid valves 3a, 3b... (Hereinafter, collectively referred to simply as "solenoid valves 3") for selectively supplying compressed air to the compressed air branch supply pipes 1a, 1b. The branch suction ducts 2a, 2b,... Are provided with sleeve valves 4a, 4b, respectively (hereinafter, simply referred to as "sleeve valve 4"). The solenoid valve 3 and the sleeve valve 4 are connected to a control mechanism C
By operating sequentially at preset time intervals based on signals from the PU, the compressed air main supply pipe 1 and each compressed air branch supply pipe 1a, 1b... And the main suction duct 2 and each branch suction duct 2a, 2b ..., each card group CG
The communication is sequentially performed for a predetermined time every time.

[0010] Fig. 2 shows the collecting and carrying out device A for the falling cotton provided for each of the cards C1, C2 ... (hereinafter, simply referred to as "card C"). The device for collecting and discharging cotton litter A comprises a cotton litter blowing means 10 provided below the doffer D and a cotton litter suction and discharging means 40 provided below the take-in roller TR for sucking the blown cotton litter. .

[0010] The falling cotton blowing means 10 comprises a compressed air jet nozzle 11 and a swing mechanism 20 for swinging (swinging) the compressed air jet nozzle 11. The details are shown in Figs.
As shown in FIG. The ejection nozzle 11 is a long main nozzle 11a.
And a short auxiliary nozzle 1 that is arranged at intervals on both sides
1b and 11c, which are attached to a swinging pipe 12 which is swingably supported. The turning pipe 12 is composed of a manifold 13 and a connecting pipe 14 connected to the compressed air branch supply pipe 1a.
Are connected by

The swing mechanism 20 includes an air cylinder 21 and a supply / exhaust switching valve 2 for supplying compressed air to the air cylinder 21.
The air cylinder 21 is connected to the rotating tube 12 via a connecting rod 23, and as shown in FIGS. 11 performs a swing motion at a predetermined angle.

The switching valve 22 has an air-operated structure. The switching valve 22 is provided with pressures of connecting pipes 25 and 26 mounted on both cylinder chambers of the air cylinder 21, more specifically, the connecting pipes 25 and 26. The operation is performed by pressure detection sensors 30 and 31 attached to 26. That is, in FIGS. 3 to 5, for example, when the piston 24 moves to the right, reaches the dead center, and the exhaust pressure from the right connection pipe 26 drops to almost 0, the switching valve 22 is turned on. The switching is performed by air pressure supplied from the pressure detection sensor 31 via the switching valve operation circuits 32 and 33,
FIG. 6 shows an example of the pressure detection sensors 30 and 31.

As shown in FIG. 6, the pressure detecting sensors 30 and 31 have an on-off valve 34 interposed between a switching valve operating circuit composed of an operating air supply circuit 32 and an operating air discharge circuit 33. The other side of the valve 34 is connected to the connecting pipe 2
5 and 26 are connected to each other by a connection hole 35. And
For example, as shown in FIG. 5, when the pressure in the connection pipe 25 is high, that is, while the pressure air is flowing into the left cylinder chamber of the air cylinder 21 via the switching valve 22, the pressure detection sensor 30 is opened and closed. The valve 34 is pressed to shut off the operating air supply circuit 32 and the operating air discharge circuit 33. Even if the piston 24 moves to the right, the connecting pipe 2
Since the discharge air pressure in 6 is high, the open / close valve 34 of the pressure detection sensor 31 is pressed, and the working air supply circuit 32 and the working air discharge circuit 33 are shut off. When the piston 24 further moves to the right side and approaches the right dead center, the discharge pressure, that is, the pressure in the connecting pipe 26 substantially approaches 0, and the pressure detection sensor 31 is pressed by the pressing force of the working air supply circuit 32. The open / close valve 34 is opened to communicate the operating air supply circuit 32 and the operating air discharge circuit 33, the switching valve 22 is operated by air pressure, the transfer direction of the piston 24 is switched, and the ejection nozzle 11 swings. Let it do.

When the switching is completed and the compressed air is supplied to the connecting pipe 26, the piston 24 moves backward. When the pressure in the connection pipe 26 is high, that is, while the pressurized air is flowing into the right cylinder chamber of the air cylinder 21 via the switching valve 22, the open / close valve 34 of the pressure detection sensor 31 is pressed, and the operating air Supply circuit 32 and operating air discharge circuit 33
Also, even if the piston 24 moves to the left, the exhaust air pressure in the connection pipe 25 is high,
The on-off valve 34 of the pressure detection sensor 30 is pressed, and the working air supply circuit 32 and the working air discharge circuit 33 are shut off. When the piston 24 further moves to the left side and approaches the left dead center, the discharge pressure, that is, the connection pipe 25
When the pressure in the air approaches substantially 0, the opening and closing valve 34 of the pressure detection sensor 30 is pushed open by the pressing force of the operating air supply circuit 32, and the operating air supply circuit 32 and the operating air discharge circuit 33 are opened.
The switching valve 22 is actuated by air pressure to switch the moving direction of the piston 24, and the ejection nozzle 11 is caused to swing. In addition, the pressure air to the air cylinder 21 and the pressure detection sensors 30 and 31 is supplied through the manifold 13.

As shown in FIG. 7, the unloading means 40 includes a suction nozzle 41 having a width substantially equal to the card stand, and a connecting duct 4 connecting the suction nozzle 41 and the branch suction duct 2a.
The suction nozzle 41 is provided with a long suction hole 43 facing the ejection nozzle 11.

In the above arrangement, when collecting the card fall, the solenoid valves 3a, 3b... And the sleeve valves 4a, 4b... Are sequentially operated at predetermined time intervals in the control mechanism CPU. In this case, each of the solenoid valves 3a, 3b... And the sleeve valves 4a, 4b
... is opened (or closed) by a signal from the control mechanism CPU
And compressed air branch supply pipes 1a, 1b, respectively.
Supply compressed air to the cotton litter blowing means 10, and communicate the branch suction ducts 2a, 2b... With the main suction duct 2 to convey the cotton litter to the dust collecting device DF. That is, in the first card group CA, first, the pressurized air is supplied to the ejection nozzle 11 by the operation of the solenoid valve 3a and the sleeve valve 4a, and at the same time, the swinging mechanism 20 is operated, and the ejection nozzle 11 swings. . In this case, by detecting the transition position of the piston 24 in the air cylinder 21 by the pressure detection sensors 30 and 31, the switching valve 22 can be immediately reversed at the dead center position. The blown cotton wool is sucked by the suction nozzle 41 of the carrying-out means 40 and is conveyed to the dust collecting device DF via the main suction duct 2.

After collecting and transporting the dropped cotton to the first card group CA for a predetermined time, the control device CPU collects and transports the dropped cotton to the second card group CB in the same manner.
Hereinafter, collection and transportation of the cotton litter are sequentially performed on each card group CG in the same manner.

[0018]

According to the apparatus of the present invention for collecting and transporting cotton lint on a card, a compressed air ejection nozzle is provided as a cotton luffing means, and an air cylinder is used as a means for swinging the ejection nozzle. Swinging motion can be performed smoothly. Further, as a driving means of a switching valve for switching the reciprocating motion of the piston of the air cylinder, a pressure detecting sensor is attached to each of the compressed air supply / discharge pipes forming a pair with the air cylinder, and the piston of the air cylinder approaches the dead center. When this occurs, the switching valve is actuated by the generated air pressure, so that switching from the dead center of the piston can be performed quickly. Due to the generation structure, there is an effect that no electric spark is generated and there is no danger of ignition.

[Brief description of the drawings]

FIG. 1 is an operation circuit diagram of a device for collecting and discharging fallen cotton for a card according to the present invention.

FIG. 2 is an explanatory view of the arrangement of a device for collecting and carrying out fallen cotton on a card according to the present invention.

FIG. 3 is an overall plan view of the lint blowing means.

FIG. 4 is a front view of the same.

FIG. 5 is an operation circuit diagram of the lint blowing means.

FIG. 6 is a longitudinal sectional view of a pressure detecting sensor.

FIG. 7 is a plan view of a suction nozzle of the cotton shedding carrying means.

[Explanation of symbols]

 A Collecting and discharging device for fallen cotton 1 Compressed air main supply pipe 1a Compressed air branch supply pipe 1b Compressed air branch supply pipe 2 Main suction duct 2a Branch suction duct 2b Branch suction duct 3 Solenoid valve 4 Sleeve valve 10 Dropping blower means 11 Spout Nozzle 20 Swinging mechanism 21 Air cylinder 22 Switching valve 30 Pressure detection sensor 31 Pressure detection sensor 32 Operating air supply circuit (switching valve operating circuit) 33 Operating air discharge circuit (switching valve operating circuit) 40

Claims (1)

(57) [Claims] 1. A cotton wool blowing means provided below a card doffer and blowing cotton wool by compressed air supplied from a compressed air supply pipe, and a cotton wool blown and provided below a take-in roller. In the apparatus for collecting and transporting the cotton swabs with respect to the card having the cotton swabs suctioning and unloading means for sucking and transferring the dust to the dust collecting apparatus, the cotton swabbing blowing means performs a compressed air ejection nozzle and a swing motion of the nozzle. A swing mechanism, wherein the swing mechanism includes an air cylinder,
A pressure detection sensor for detecting the pressure of a pair of compressed air supply / discharge pipes for the air cylinder, and a switching valve for supplying / discharging air to / from the air cylinder are provided. The sensor has an air generation structure that operates the switching valve non-electrically via the switching valve operation circuit, detects when the piston of the air cylinder reaches both dead centers, and operates the switching valve by the generated air pressure. A collection and delivery device for the fallen cotton for the featured cards.