CN108286093B

CN108286093B - Spinning machine

Info

Publication number: CN108286093B
Application number: CN201810158445.0A
Authority: CN
Inventors: 邵开元; 张斌; 潘凯凯; 张越锋; 严顺晨; 戴小平; 陈美菊
Original assignee: Anhui Rifa Textile Machinery Co Ltd
Current assignee: Anhui Rifa Textile Machinery Co Ltd
Priority date: 2018-02-26
Filing date: 2018-02-26
Publication date: 2023-10-31
Anticipated expiration: 2038-02-26
Also published as: CN108286093A

Abstract

The present invention relates to a spinning machine including a spinning device for producing spun yarn, a winding device for outputting the spun yarn produced by the spinning device from an output roller and winding the spun yarn onto a package, a splicing operation carriage for traveling between the spinning devices, and a yarn storage tension device between the spinning output roller and the winding device; the Chu Shazhang force device has a negative pressure suction yarn end holding part at the downstream, and the suction yarn end holding part can smoothly enter the negative pressure channel of the holding part and be at a prescribed position when the yarn is broken. The invention can improve the manufacturing efficiency of spinning in each spinning unit, and further can improve the production efficiency of packages in a spinning machine.

Description

Spinning machine

Technical Field

The present invention relates to a spinning machine, in which a yarn preparation mechanism (a yarn end holding unit) having a yarn defect on a package is automatically unwound by a spinning unit winding unit before a splicing operation is performed by a splicing operation cart when spinning is interrupted in a spinning process.

Background

Spinning machines for twisting fibers to produce spun yarn and winding the spun yarn on packages are well known. The spinning machine generates a twist air flow in a spinning chamber by ejecting compressed air from an air spinning nozzle, and twists a fiber bundle with the twist air flow to produce a yarn.

Conventionally, a spinning unit for producing spun yarn by drawing a fiber bundle and twisting the drawn fiber bundle is known. The spinning unit is provided with a yarn defect detecting section capable of detecting a defective portion of the spun yarn and a winding section for winding the spun yarn into a package.

Conventionally, a spinning machine including a plurality of spinning units is known. The spinning machine is provided with a work carriage which travels to the spinning unit to perform a splicing operation when a continuous state of spinning in one spinning unit is cut off. The splicing operation trolley is provided with a braking part capable of braking the rotation of the package, a guiding part for capturing and guiding the spun yarn, and a joint part for joining yarn ends of the spun yarn to each other.

The spinning unit cuts the spun yarn when the yarn defect detecting unit detects a defective portion of the spun yarn, and interrupts the production of the package. When the splicing operation carriage reaches the spinning unit, the braking portion is brought into contact with the package, and the rotation of the package is stopped. Then, the guide portion for the splicing operation carriage is moved to the package side, and then the package is rotated (reversed) in the unwinding direction by the reverse roller so that the guide portion (large suction nozzle) can catch the spun yarn end smoothly, and the spun yarn end is guided to a predetermined position after the defective portion is removed by the splicing operation carriage joint portion, and the spun yarn ends are joined to each other after the defective portion is removed. Through such a series of steps, the spinning unit resumes the package formation.

When the moment of inertia of the package is large, such as when the outer diameter of the package is large due to the wound spun yarn, the rotation of the package cannot be stopped even if the brake is brought into contact with the package for a predetermined time. Sometimes the friction between the braking portion and the package makes it difficult for the guiding portion (large suction nozzle) to catch the spinning head. When the rotation of the package cannot be stopped, the package cannot be reversed even by using the reverse roller, and the guide (large suction nozzle) cannot catch the spinning head wound on the package. The quality of the spun yarn wound around the package may be deteriorated by the reverse roller.

Disclosure of Invention

The present invention provides a splicing operation trolley, which can cut the spun yarn and cut the spun yarn in other cases when a yarn spot detecting part detects the defect part of the spun yarn under the condition that a package braking part, a reverse roller and a guiding part (a large suction nozzle) are not arranged, and interrupt the package. And then, after the spinning defect is removed, the spinning yarn ends are successfully spliced with each other, and the spinning unit restarts the winding.

According to an aspect of the invention, each spinning unit has only one spinning head holding section and an independently driven winding section downstream of the yarn storage tensioner. The spinning unit cuts the spun yarn when the yarn defect detecting unit detects a defective portion of the spun yarn, or cuts the spun yarn when the yarn defect detecting unit detects a defective portion of the spun yarn. The spinning unit independently drives the winding part to stop rotating. Then, the winding section is independently driven to reverse the yarn-backing section, and the yarn defect enters the yarn negative pressure passage of the holding section and is held at a predetermined position.

After receiving the splicing signal, the splicing operation trolley walks to the spinning unit to be positioned, and then directly carries out splicing operation, thereby eliminating the time for stopping the rotation of the package of the spinning unit, reversing the reverse roller of the package, capturing the yarn end guiding part (large suction nozzle) and finishing yarn faults. Thereby reducing the operation flow and the splicing operation time. The working efficiency is improved.

The splicing operation trolley has no relative friction of the braking part to the winding part and the reverse roller to the winding part, and has no damage to the spinning of the winding part, so that the spinning quality is improved. The possibility that the guide part (large suction nozzle) cannot catch the spinning head is ensured. The manufacturing efficiency of spinning in each spinning unit can be improved, and the production efficiency of packages in the spinning machine can be improved.

Drawings

Fig. 1 is a view showing an overall structure of a spinning machine; fig. 2 is a view showing a structure of a spinning unit spinning and working carriage; fig. 3 is a view showing the structure of the operation cart when the spinning unit breaks a yarn; fig. 4 is a diagram showing a structure of the spinning unit and the operation cart at the time of splicing; fig. 5 is a view showing the structure of the yarn feeding bobbin and the operation carriage of the spinning unit; fig. 6 is a view showing the structure of the yarn drawing tube of the spinning unit and the operation carriage when the yarn is guided to the lower side of the splicer.

Detailed Description

Next, a spinning machine according to an embodiment of the present invention will be described with reference to the drawings. In the present specification, "upstream" and "downstream" mean upstream and downstream in the traveling direction of the yarn at the time of spinning.

As shown in fig. 1, a spinning machine 1 as an example of a textile machine includes a plurality of spinning units (winding units) 2 arranged in an aligned manner. The spinning machine 1 has a splicing operation carriage 3, a negative pressure fan 80, and a headstock control box 5.

As shown in fig. 1, each spinning unit 2 includes, as a main configuration, a draft device 7, a spinning unit (spinning machine) 9, an output roller 11, a yarn Chu Shazhang ejector 12, and a winding unit 13 in this order from the upstream side.

The draft device 7 is provided in the vicinity of the upstream of the frame 6 of the spinning machine 1. The fiber bundle 8 sent from the draft device 7 is spun by a spinning unit (spinning machine) 9. After the spun yarn 10 produced by the spinning section 9 is transported by the delivery roller 11, the wound section 13 winds around the bobbin 48 to form the package 45.

The draft device 7 is a device for drafting a fiber bundle called sliver 15 into a fine fiber bundle 8.

As shown in fig. 2, the draft device 7 includes 4 pairs of rear roller pair 16, third roller pair 17, intermediate roller pair 19 having a apron 18 attached to each roller, and front roller pair 20.

In the detailed structure of the spinning device 9, in the present embodiment, an air-type structure is adopted in which compressed air is discharged from an air-jet spinning nozzle to generate a whirling air flow in a spinning chamber, and twist is applied to a fiber bundle by the whirling air flow to produce a yarn 10.

The yarn feeding roller 11 includes a feeding roller 40 supported by the frame 6 of the spinning machine 1 and the yarn feeding roller 11 disposed in contact with the delivery roller 39. The spun yarn 10 fed from the spinning device 9 is nipped between the delivery roller 39 and the delivery roller 40, and the delivery roller 39 is rotationally driven by a motor, not shown, whereby the spun yarn 10 can be fed to the Chu Shazhang presser 12. The yarn 10 is unwound by the yarn storage tensioner 21 and fed to the winding device 13.

Downstream of the feed roller 11, a yarn storage tensioner 12 is provided. The yarn storage tensioner 12 includes a yarn storage roller 21, a flyer 22, and a driving motor 25.

The flyer 22 is configured to be capable of rubbing against the spun yarn 10, and is configured to guide the spun yarn 10 to the outer peripheral surface of the storage roller 21 for storage. The flyer 22 can continuously feed the yarn 10 to the winding device 13 while maintaining a constant tension in the spun yarn 10.

The yarn accumulating roller 21 and the flyer 22 are rotationally driven by a motor 25. Thereby, the flyer 22 guides the spun yarn 10 to be temporarily stored on the outer peripheral surface of the yarn storage roller 21, and continuously feeds the yarn 10 to the winding device 13.

An electric cleaner 52 is provided at a position between the feed roller 11 and the yarn Chu Shazhang presser 12 on the front side of the frame 6 of the spinning machine 1. The spun yarn 10 produced by the spinning device 9 passes through the electric clearer 52 before being wound by the yarn storage tensioner 12. The electric cleaning 52 is configured to monitor the thickness of the spun yarn 10, and when a defect is detected in the spun yarn 10, to send a yarn defect detection signal to a unit controller that is a computer for controlling the spinning unit 2. The unit controller sends a signal to cut off the spun yarn 10 when a yarn defect is detected.

The winding device 13 includes a rocker arm 71, a winding drum 72, and a traverse device 75 as main components.

The winding drum 72 can be driven in contact with the outer peripheral surface of the bobbin 48 or the package 45. The traverse device 75 includes a traverse guide 76 capable of guiding the spun yarn 10. The winding drum 72 is driven by an unillustrated driving device (in this embodiment, a driving device independent of a plurality of spinning units) to reciprocate the traverse guide 76, and the winding device 13 rotationally drives the package 45 in contact with the winding drum 72 to traverse and wind the spun yarn 10 around the package 45.

As shown in fig. 2, the cradle arm 71 rotatably supports a bobbin 48 for winding the spun yarn 10. The rocker arm 71 is rotatably supported about the support shaft 70, and is rotatable in either one of a direction in which the package 45 approaches the winding drum 72 and a direction in which the package leaves the winding drum 72. Thus, even if the yarn layer diameter of the package 45 increases due to the spun yarn 10 being wound, the increase in the yarn layer diameter can be absorbed by the rotation of the rocker arm 71, and the surface of the package 45 can be brought into continuous proper contact with the winding drum 72.

The cradle arm 71 is connected to a cylinder 47. As shown in fig. 2, the air cylinder 47 is provided as a suitable contact force capable of continuously bringing the surface of the package 45 into contact with the winding drum 72. The air supply of the air cylinder 47 is connected to a compressed air supply 65 for pressing.

Next, the splicing operation carriage 3 will be described. As shown in fig. 2, the splicing operation carriage 3 includes a splicer (splicing device) 43 and a yarn suction tube 44 as main components. As shown in fig. 1, the joint carriage 3 can travel on a rail 41 fixed to the frame 6. When a yarn breakage or yarn cutting occurs at a certain spinning unit 2, the splicing operation carriage 3 moves along the rail 41 to the spinning unit 2, and stops to splice.

In the case where a defect and a yarn breakage are detected in the spun yarn 10 during spinning, a yarn defect detection signal and a yarn breakage signal are sent to a unit controller as a computer that controls the spinning unit 2. The unit controller at a certain spinning unit 2 sends a signal to cut or break the yarn. Immediately after the rotation of the roller pair 16 and the third roller pair 17 is stopped, the spinning device 9 stops spinning as shown in fig. 3. At this time, a certain amount of yarn is stored on the surface of the yarn storage roller 21. The winding drum 72 continues to rotate.

Then, the unit controller controls the winding drum 72 to rotate, and when the yarn on the surface of the yarn accumulating roller 21 is partially withdrawn, the Chu Shazhang force sensor 46 detects a signal, and the unit controller sends a signal to control the winding drum 72 to reduce the rotation speed, calculate the winding length, and precisely control the spinning yarn to enter the yarn holding portion 77. The unit controller receives the sensor 78 signal and precisely controls the take-up drum 72 to reverse the yarn faults on the unwind package 45 and to hold the yarn in a prescribed position (directly in front of the splicer 43) as shown in fig. 4.

The unit controller obtains the sensor 78 signal, and then, the unit controller transmits a control signal to the splicing cart 3 to cause the splicing cart 3 to travel to the spinning unit 2 for splicing.

Next, the unit controller starts control joint by joint. First, the unit controller operates the draft device 7, the spinning device 9, and the like again, and resumes the generation of the spun yarn 10. As in restarting the spinning, the unit controller controls the suction tube 44 to rotate to the vicinity of the downstream side of the spinning device 9 as shown in fig. 5, and simultaneously controls the suction tube 44 to generate suction flow and catch the yarn end (upper yarn) sent out by the spinning device 9. Then, the unit controller controls the yarn storage motor 25 to drive, rotates the suction tube 44 downward while continuing to suck, and withdraws the spun yarn 10 from the spinning device 9 with the suction tube 44 and guides the spun yarn to the Chu Shazhang force device 12 and the splicer 43.

The yarn suction tube 44 captures the yarn end of the spinning device 9 and guides the yarn end to the Chu Shazhang presser 12 and the splicer 43. More specifically, the yarn suction tube 44 is rotatable in the up-and-down direction about the axis, and attracts and catches the yarn end portion fed from the spinning device 9, and during the attraction, the spun yarn 10 is wound around the winding roller 21 by the flyer 22, and is continuously guided to the splicer 43 below the splicer 43.

The splicer 43 splices the yarn having the spinning head entered the holding portion 77 and the yarn end portion (upper yarn) caught and guided by the yarn suction tube 44 at a predetermined position (lower yarn). The detailed structure of the Guan Nianjie device 43 is omitted, and the twisting device 43 is used to twist yarn ends together by a twisting air flow, thereby performing a work of twisting upper and lower yarns.

Next, an operation in a case where a defect is detected in the spun yarn 10 in the spinning machine 1 of the present embodiment will be described with reference to fig. 2 to 6.

When the upper yarn and the lower yarn are led to the splicer 43, the splicer 43 performs splicing. During the piecing process, the spinning by the spinning device 9 is also continued. Since the winding by the winding device 13 is stopped during the yarn joining process, the spun yarn 10 is continuously fed out from the spinning device 9 during this period, and therefore, the spun yarn 10 is continuously wound around the yarn accumulating roller 21, and the loosening of the spun yarn 10 is prevented.

When the splice by splicer 43 is completed. Thereby, the unit controller controls the winding drum 72 to rotate the package 45, and the winding of the spun yarn 10 is restarted. In addition, the package 45 is always in contact with the winding drum 72, and no impact is generated when the package 45 is separated from the winding drum 72 as in other cases.

Thus, since a special mechanism for adjusting the position of the package 45 is not required, the structure of the splicing operation carriage 3 can be simplified.

The spinning machine 1 of the present embodiment includes a spinning device 9, a yarn Chu Shazhang force unit 12, a yarn suction tube 44, and a splicer 43. The yarn suction tube 44 catches and guides the yarn end from the spinning device 9. The splicer 43 connects the yarn (lower yarn) that enters the holding portion 77 from the spinning head and is at a predetermined position with the yarn end captured by the yarn suction tube 44.

Thus, the splicer 43 can accurately control splicing without braking the package 45, reversing the unwinding yarn defect, and guiding the yarn by suction by the guide (large suction nozzle) without the package braking unit, the reverse roller, and the guide (large suction nozzle). As a result, there is no time for unwinding the package 45 and braking the package 45, and the splicing operation by the splicing operation carriage 3 can be smoothly performed. The splicing efficiency is improved by 30% and the wear and impact of the package 45 is reduced.

Claims

1. A spinning machine provided with a spinning device for producing yarn, an output roller for outputting the yarn produced by the spinning device, a winding device for winding the yarn onto a package, a splicing operation trolley for traveling between the spinning devices, and a yarn storage tension device between the output roller and the winding device, wherein the winding device comprises a winding drum and a traverse device, and the splicing operation trolley comprises a splicer and a yarn suction tube, characterized in that: a suction spinning thread end holding part with negative pressure at the downstream of the Chu Shazhang force device; a yarn sensor is arranged at the downstream of the suction spinning thread end holding part; the winding roller and the traversing device in the winding device have the function of independent driving respectively; when the yarn is broken, the yarn wound on the yarn storage roller of the yarn storage tension device is reduced to a certain amount, the winding speed of the independently driven winding roller is reduced, and the broken yarn end of the spinning can be ensured to smoothly enter the negative pressure channel of the yarn end holding part of the suction spinning; when it is determined that the broken yarn end of the spun yarn is in the negative pressure passage of the yarn end holding portion of the spun yarn, the individually driven winding drum is reversed to draw the yarn of the yarn defect on the package out and hold the yarn at a predetermined position, that is, immediately in front of the splicer, which splices the yarn end portion of the yarn caught and guided by the yarn suction tube and the yarn end portion of the yarn from the spinning device, into which the yarn end is drawn and held by the yarn suction tube.