JPH06102853B2 - Fiber waste blowing device under spinning machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber waste blowing device under a spinning machine.

[0002]

2. Description of the Related Art In a spinning machine such as a carding machine, a neck disposed on the floor surface of the spinning machine in order to effectively discharge the debris such as debris, nep, and short fibers accumulated on the floor surface under the spinning machine. To the swing device,
In some cases, a blow-out nozzle that blows compressed air that blows away fiber scraps forward from the tip is provided so as to be able to freely fan in the lateral direction (see, for example, Japanese Utility Model Publication No. 52-143421).

[0003]

However, in the above-mentioned prior art, since the blow-out nozzle is simply provided so as to be fanned in the lateral direction, the fiber waste is blown off beyond a predetermined nozzle fan turning angle. It is difficult to do so, and the range beyond the nozzle fan turning angle inevitably becomes the blind spot of the compressed air.

On the other hand, if the nozzle fan angle is increased to eliminate this blind spot, the fan cycle becomes longer and the time required for the blow-off becomes longer. The present invention has been made in view of the above circumstances, and provides a fiber waste blowing device under a spinning machine capable of shortening the blowing time by expanding the blown blowable area of a blowing nozzle as much as possible. With the goal.

[0005]

[Means for Solving the Problems] In order to achieve the above object,
The technical measures taken by the present invention are in a fiber spinning device under a spinning machine, which is arranged on a floor 5 under a spinning machine 1 and has a jet nozzle 14 for blowing away the fiber dust in a forward direction so as to be able to laterally fan. ,
The jet nozzle 14 includes a long main nozzle 14c for jetting compressed air forward from the tip, and a pair of left and right sub-nozzles 14d extending laterally from the root side of the main nozzle 14c and jetting compressed air forward. 14d and.

[0006]

[Function] Since a pair of left and right sub-nozzles 14d, 14d extending laterally from the root side of the main nozzle 14c eject compressed air forward, a dead zone of compressed air is prevented from occurring near the root of the main nozzle 14c. As a result, the blowable area by fanning the nozzles 14c and 14d is increased.

[0007]

【Example】

Comparative Example First, a comparative example will be described. 1 to 5 show a first comparative example, in which 1 is a card which is a spinning machine, and mainly, a take-in 2, a cylinder 3 and a doffer 4 are arranged from the fiber mass feeding side, and these are arranged on a floor 5. It is rotatably mounted on a fixed machine base 6. A surrounding wall 8 is provided around the lower space 7 of the machine base 6, and the take-in 2 and the cylinder
In the space below 3 and the buffer 4, the fiber debris generated and accumulated by the coating action of the spinning machine 1 is prevented from scattering in all directions.

A plurality of spinning machines 1 are lined up in the factory building, and most of them are operating at the same time. Reference numeral 9 is a compressed air jetting means for blowing off the fiber waste, and is arranged at the outer center below the doffer 4 which is one end of the lower space 7 of each spinning machine 1 in a substantially central position. The compressed air jetting means 9
Consists of an air box 15 equipped with an air ejection nozzle 14 connected to a compressor 10 via air supply pipes 11 and 12 via an on-off valve 13, and the air ejection nozzle 14 of the air box 15 is a lower part of the takein 2 It is installed so as to squirt almost horizontally toward. At the center of the lower surface of the air box 15, a vertical rotary shaft 16
Is fixed and the rotary shaft 16 is a support shaft bearing fixed on the floor 5.
It is rotatably supported by 17.

Reference numeral 18 denotes a gate-shaped support stand, which is erected on the floor 5 on both sides of the air box 15 (on the left and right sides in the direction orthogonal to the air ejection direction), straddling the air box 15. Reference numeral 19 denotes an air box swinging drive device, which is fixed on a gate-shaped support base 18, and a lower end of a drive shaft 20 thereof penetrates the center of the gate-shaped support base 18 and extends downward to form an upper surface of the air box 15. It is detachably fixed to the center via a coupling 21.

The air box swinging drive device 19 reciprocates the air jet nozzle 14 on an arc in a direction orthogonal to the air jet direction. As shown in FIGS. The inside of the cylindrical casing 22 is the working chamber 23 and the air passage 2.
In order to form 4,25, three vertical partition walls 26, 27, 28 are defined by the central transmission pipe 29 of the drive shaft 20.

The partition walls 26, 27 on both sides of the working chamber 23 are
Air supply / discharge ports 30 and 31 are provided, and air circulation ports 32 and 33 are provided on the outer walls (casing peripheral walls) of the air passages 24 and 25. The air circulation ports 32 and 33 are provided with the switching valve 34. Has an air tube 3
Connected by 5,36. The switching valve 34 is connected to the air supply pipe 12 by an air pipe 37. Reference numeral 38 denotes an actuating blade, and the base end of the insertion tube 29 that penetrates the excision portion 29A on the actuating chamber 23 side is fixed to the drive shaft 20. Therefore, by alternately supplying compressed air from the air supply / discharge ports 30 and 31, the operating blade 38 is pushed and the drive shaft 20 is reciprocally rotated.

The upper end portion 20A of the drive shaft 20 is reduced in diameter, penetrates the upper lid 39 of the casing 22, and is supported by a bearing 40 fixed to the center of the upper surface of the upper lid 39. The limit switch operating rod 41 is fixed. 42 and 43 are changeover limit switches.
By means of 3, the flow switching operation of the switching valve 34 is performed, and the air supply / discharge control to / from the working chamber 23 is performed.

Reference numeral 44 is a timer, and the open / close valve is provided by a conductor 45.
It is connected to 13 and opens / closes the on-off valve 13 at predetermined time intervals, and at the same time controls the operation / stop of the air box swing drive device 19. Reference numeral 46 is a fiber waste discharging means, which is connected to an opening provided in the lower part of the surrounding wall 8 at the opposite end of the compressed air spraying means 9 and sucks the fiber waste and discharges it in a direction orthogonal to the sprayed air flow 47 And an on-off valve 50 provided in the middle of a discharge pipe 49 connected to the blower 48. The on-off valve 50 is connected to a timer 52 connected by a conductor 51 to the compressed air at predetermined time intervals. It is designed to be opened and closed in synchronization with the timer 44 of the ejection means 9.

In the first comparative example, only one spinning machine 1 and its fiber debris suction / disposal device are shown and described, but normally, one compressor 10 and one blower 48 are used. The compressed air is sequentially sent to the blow-off device of the spinning machine 1 at a predetermined timing to intermittently operate. According to the first comparative example, the opening / closing valves 13 and 50 are opened by the operation of the timers 44 and 52, the compressed air from the compressor 10 is sent to the inside of the air box 15 through the air supply pipes 11 and 12, and the air ejection nozzles. Lower space of machine base 6 vigorously from 14 7
It is blown inside.

At this time, a part of the compressed air is passed from the air pipe 37 connected to the air supply pipe 12 through the switching valve 34 to the air pipe 35 or
36 through the air passage 24 of the air box swing drive 19 or
It is supplied and discharged alternately to both sides of the operating blade 38 in the operating chamber 23 through 25, and alternately pushes both side surfaces of the operating blade 38 to reciprocally rotate, and the air box 15 is moved through the drive shaft 20. Make a swing motion.

Therefore, the air jet nozzle 14 reciprocates in a horizontal direction orthogonal to the air jet direction on an arc centering on the rotary shaft 16, and a flow passage for air blown into the lower space 7 of the machine base 6 is formed. Air jet nozzle 14 that does not change and is not fixed
Since an air flow passage is formed at any position in the vicinity of and the air flow passage is formed over the entire surface of the lower space 7, the accumulated fiber debris is blown off.

On the other hand, the air blown into the lower space 7 of the machine base 6 is sucked and discharged together with the fiber waste by the blower 48 through the suction box 47, the discharge pipe 49 and the opening / closing valve 50. When a predetermined time (for example, several seconds) elapses after the compressed air is ejected, the opening / closing valves 13 and 50 are closed with a predetermined time lag by the operation of the timers 44 and 52, and the fiber dust blowing operation is completed. At this time, since the air supply to the air box swing drive device 19 is cut off by the closing operation of the opening / closing valve 13, the air box
The swinging motion of 15 is also stopped.

The above-mentioned fiber waste blowing operation is also sequentially performed for a plurality of other spinning machines arranged in a row. When the blowing operations of the other spinning machines are completed, the timers 44 and 52 are actuated again. The on-off valves 13 and 50 are opened, the above-mentioned blowing operation is started, and thereafter, the blowing operation is repeated intermittently. Figure 6
Shows a second comparative example, and since the specific configuration of the compressed air jetting means 9 is different from that of the first comparative example, the same reference numerals and names are used for the same configurations as described above, and detailed description will be given. Omit it.

In the compressed air jetting means 9 of the second comparative example, the air box 15 has a long cylindrical shape, and a plurality of air jet nozzles 14 are provided in parallel at a predetermined interval. Both ends are closed, and sliding support shafts 53, 54 are fixed to each other. The sliding support shafts 53, 54 are non-rotatably supported by bearings 55, 56 installed on the floor 5 in the surrounding wall 8 and slidable only in the horizontal direction orthogonal to the air ejection direction. The sliding support shaft 53 is hollow and also serves as an air supply pipe for supplying compressed air into the air box 15.

Reference numeral 57 is an air box reciprocating drive air cylinder, in which a piston rod 58 penetrates the cylinder head, one end of the piston rod 58 is connected to the sliding support shaft 54, and the other end has a limit switch actuating cam 59. Is stuck.
Then, limit switches 60, 61 are arranged at the same distance as the reciprocating distance of the piston rod 58, corresponding to the limit switch actuating cam 59.

An air feed pipe 12 is connected to the sliding support shaft 53, and compressed air from the compressor 10 is fed through the air feed pipe 11 and an on-off valve 13. Also,
The air box reciprocating cylinder 57 is supplied with a part of the compressed air which is led from the air supply pipe 12 through the air pipe 37 and through the opening / closing valve 34 to the air pipes 35 and 36, and the piston rod 58 of the cylinder 57 is supplied. Can be moved back and forth.

Therefore, the air box 15 connected to the piston rod 58 through the slide support shaft 54 is linearly reciprocated in the horizontal direction orthogonal to the air ejection direction. The movement amount of the air box 15 is determined by the pitch P of the air ejection nozzles 14.
Preferably the same as Also in this second comparative example,
Following the movement of the piston rod 58 of the cylinder 57,
Mit switches 60 and 6 respectively at the stroke limit
Since 1 is alternately operated by the operation cam 59, the limit switches 60 and 61 control the switching of the switching valve 34 to smoothly move the air box 15 back and forth.

Therefore, the air jet nozzle 14 reciprocates on a straight line in the horizontal direction orthogonal to the air jet direction, the air flow path constantly changes, and the air flows to any position near the nozzle 14. The passage is formed, the blind spot is eliminated, and all the fiber debris accumulated in the entire lower space 7 of the machine base 6 is in a floating state. In this way, the fiber waste in the floating state is sucked and discharged by the discharge means 46 together with the air.

Then, the blowing operation of the fiber waste is intermittently repeated at a predetermined time interval as in the first comparative example. As shown in FIG. 7, the air box 15 is provided with a long nozzle 14a and a short nozzle 14b. The long nozzle 14a extends below the cylinder 3. By extending the nozzle in this manner, it is possible to effectively blow away the fiber waste below the take-in 2.

Also in the second comparative example, it is possible to provide a plurality of nozzle lengths of different lengths. (Embodiment) FIGS. 8 to 14 show an embodiment of the present invention, the same parts as those of the comparative example are designated by the same reference numerals, and the description thereof will be omitted. The suction box 47 in the fiber waste discharging means 46 is a hopper type in which the suction port 47a is opened immediately below the takein 2, and the suction pipe 40
A damper type on-off valve 50 (hereinafter referred to as an on-off damper) is installed at the connection portion with and the on-off damper 50 is opened by the air supplied from the compressor 10 through the air on-off valve 13 (solenoid valve), and at the same time, this Air flue 12
Then, the compressed air is ejected to the compressed air jet nozzle 14.

A chute 62 for guiding the fiber waste falling from the take-in 2 to the suction port 47a is provided above the suction box 47. Further, the air opening / closing valve 13 is opened / closed at predetermined time intervals by the timer 44 as in the comparative example. Then, air is supplied to the nozzle swing drive device 63 to which the air jet nozzle 14 is connected by an air pressure circuit as shown in FIG.
It is designed to be ejected into the lower space 7 of the machine base 6 through the nozzle 14.

In FIG. 10, reference numeral 64 denotes an air box, which is an air supply pipe 12.
Is also connected to the throttle valve 65, and the outlet of the throttle valve 65 is connected to the ejection nozzle 14 via the air supply pipe 66. Jet nozzle 14 according to the present embodiment
As shown in FIG. 8, FIG. 9, FIG. 13 and FIG. 14, the main nozzle 14c ejects compressed air from the tip forward (to the side of the discharge means 46), and from the root side of this main nozzle 14c to the left and right in the lateral direction. And a pair of left and right sub-nozzles 14d, 14d for ejecting compressed air to the front, which prevents the dead air of the compressed air from occurring near the root of the main nozzle 14c, and the fan of both nozzles 14c, 14d. We are trying to increase the area that can be blown away with each turn.

67 is a pneumatically operated master valve, 68, 69
Is a selector switch and is the pilot air supply port of master valve 67.
Air pipes 72, 73 connecting 70, 71 and the air box 64, respectively
Is installed in. A driving air pipe 74 of the swing drive device 63 is connected to the air box 64 and the P port of the master valve 67. 75 and 76 are drive air discharge pipes of the swing drive device 63, one end of one discharge pipe 75 is connected to the air supply pipe 66 through a throttle valve 77, and the other end of the discharge pipe 76 is an inlet of the throttle valve 77. On the side is connected to the exhaust pipe 75,
The other ends of both discharge pipes 75 and 76 are R1 and R of the master valve 67.
It is connected to 2 ports. 78 and 79 are drive air supply / discharge pipes, one end of which is connected to the A and B ports of the master valve 67, and the other end of which is two supply / discharge ports of the swing drive device 63.
It is connected to 80,81.

As shown in FIG. 11, the equipment, pipes and the like which form these pneumatic circuits are housed in a pneumatic equipment housing case 82, and each pipe is connected to the equipment and the like through a joint member. There is. The change-over switches 68, 69 are operated by the operating cam 83 connected to the rotor (not shown) of the swing drive device 63.
As a result, the roller contacts 84 and 85 are pushed to turn the pneumatic circuit on and off, and the master valve operating air is switched to the pilot air supply ports 70 and 71. 86 is a rotary joint.

According to the above embodiment, the opening / closing valve 13 is opened by the operation of the timer 44, and the compressor 10 moves the air supply pipe 11
Part of the air that has passed through the on-off valve 13 passes through the on-off damper.
Operate 50 to open the exhaust pipe 49 and simultaneously
Is guided to the air box 64 by. Then, a part of the air guided into the air box 64 is fed through the rotary joint 86 to the air ejection nozzle 14 connected to the rotor of the swing drive device 63 through the slot valve 65, and the air ejection is performed. It is blown into the lower space 7 of the machine base 6 from the long and short nozzles 14a and 14b of the nozzle 14, respectively.

On the other hand, the master valve 67 is reciprocally actuated by the air alternately supplied from the air box 64 to the pilot air supply ports 70, 71 through the air pipes 72, 73 and the changeover switches 68, 69 to swing the head. The rotor is reciprocally rotated by the drive air alternately supplied into the two working chambers (not shown) of the drive device 63 through the supply / discharge pipes 78, 79, and the air ejection nozzle 14 is swung. As a result, by adjusting the slot valve 65, the flow rate of compressed air to the swing drive device 63 is adjusted, and the reciprocating speed of the ejection nozzle 14 is made variable.

Exhaust gas from the swing drive device 63 is also supplied to the air supply pipe 66 through the drive air discharge pipes 75 and 76 and the slot valve 77.
And is blown into the lower space 7 from the nozzles 14 and 14b. Then, the fiber waste accumulated in the lower space 7 is blown off over the entire surface, and is drawn out together with air from the suction port 47a through the suction box 47, the opening / closing damper 50, and the discharge pipe 49 by the allower 48, and is discharged.

After a lapse of a predetermined time after the ejection of the compressed air, when the opening / closing valve 13 is closed by the operation of the timer 44, the air supply to the air ejection nozzle 14 and the swing drive device 63 is cut off. At the same time as the swinging motion is stopped, the opening / closing damper 50 is also closed. The operation for blowing off the fiber waste is also performed for a plurality of spinning machines arranged in a row, and when the spinning operation is completed, the operation is restarted again by the operation of the timer 44, and thereafter the operation is repeated intermittently.

According to the above-described embodiment, the pneumatic circuit can be controlled by the air drive to perform the swinging operation of the ejection nozzle 14 in conjunction with the opening / closing of the opening / closing damper 50. Timer for opening / closing timing control
Since 52 is not necessary, the structure can be simplified, and the pneumatic circuit is also compactly stored in the storage case 82, and the compressed air for blowing off the fiber waste is effectively used, so that the power cost can be reduced. Besides, the pneumatic circuit configuration is simple, the operation is reliable, and the maintenance is extremely easy.

[0035]

According to the present invention, the jet nozzle 14 has a long main nozzle 14c for jetting compressed air forward from the tip,
Since a pair of left and right sub-nozzles 14d, 14d extending laterally from the root side of the main nozzle 14c and ejecting compressed air to the front are provided, it is possible to blow the blowable area to a predetermined nozzle fan angle as much as possible. It is possible to shorten the blow-off time by shortening the fanning cycle.

[Brief description of drawings]

FIG. 1 is a plan view taken along the line AA of FIG.

FIG. 2 is a schematic cross-sectional view of a spinning machine provided with a fiber waste blowing device according to a first comparative example.

FIG. 3 is a plan view of an essential part showing an example of compressed air jetting means.

4 is a sectional view taken along line BB of FIG.

5 is a cross-sectional view taken along line CC of FIG.

FIG. 6 is a plan view of a spinning machine showing a second comparative example.

FIG. 7 is a plan view showing a modified example of the ejection nozzle.

FIG. 8 is a plan view of a spinning machine showing an embodiment of the present invention.

FIG. 9 is a schematic vertical sectional view of the same.

FIG. 10 is a pneumatic circuit diagram.

FIG. 11 is a partially omitted plan view showing an assembled state of devices and the like constituting the pneumatic circuit diagram.

12 is a plan view of an air supply pipe connecting the two-corner master valve and the air jet nozzle in FIG.

FIG. 13 is an enlarged view of the ejection nozzle shown in FIG.

FIG. 14 is an enlarged view of the ejection nozzle shown in FIG.

[Explanation of symbols]

 1 Spinning machine 5 Floor 14 Jet nozzle 14c Main nozzle 14d Sub nozzle

Claims (1)

[Claims] 1. A fiber waste blowing device under a spinning machine, which is arranged on a floor (5) below the spinning machine (1) and has a jet nozzle (14) for blowing away the fiber waste forwardly so as to be horizontally fanable. In the above, the jet nozzle (14) includes a long main nozzle (14c) that jets compressed air forward from the tip, and a jet that extends laterally from the root side of the main nozzle (14c) and forwards compressed air. And a pair of left and right sub-nozzles (14d) (14d), which are provided, for removing the fiber waste blowing device under the spinning machine.