CN110886038A - Yarn take-up device for textile machines and method - Google Patents
Yarn take-up device for textile machines and method Download PDFInfo
- Publication number
- CN110886038A CN110886038A CN201910854102.2A CN201910854102A CN110886038A CN 110886038 A CN110886038 A CN 110886038A CN 201910854102 A CN201910854102 A CN 201910854102A CN 110886038 A CN110886038 A CN 110886038A
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- Prior art keywords
- cop
- yarn
- jet assembly
- suction jet
- suction
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
- D01H15/013—Carriages travelling along the machines
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention relates to a yarn pick-up device for an automatic yarn splicing unit in a ring spinning machine, comprising a suction jet assembly with a hose having a first end and a second end. The first end is connected to a source of suction air and the second end has a circumferential housing. A drive coupled to the suction jet assembly is capable of moving the suction jet assembly vertically up and down such that the circumferential housing is capable of enclosing the cop outside of the top of the cop. The suction air source generates a suction pulling force during operation, which pulls a broken yarn end existing at any position in the length of the tube slot from the bottom to the top of the cop into the housing, to enable an automatic splicing operation in the ring spinning machine.
Description
Technical Field
The present invention relates to a textile machine, and more particularly, to a yarn pickup device for an automatic yarn splicing unit in a ring spinning machine (spinning frame). More particularly, the present invention relates to a broken yarn pickup device for separating a broken yarn end from a spinning cop to enable an automatic splicing operation in a spinning ring spinning machine.
Background
In textile spinning mills, ring spinning machines are very critical machines. The ring spinning machine produces the resulting form of cotton, the so-called yarn, on a spinning line. During ring spinning, yarn breakage often occurs, which is a major impediment. Yarn breaks must be continuously monitored and the breaks must be spliced together by manual labor. Yarn breakage occurs due to various parameters of the yarn and the machine, which is inevitable. In longer spinning frame locations, manual labor continuously monitors yarn breaks and walks around the clock along the aisles of the ring frames to perform manual splicing of broken yarns. This must be done for a rack typically consisting of more than 1600 spindles and about 75 meters long. The spinning process must then be restarted after splicing to avoid wasting yarn.
To overcome the above problems, an automatic splicing unit was developed. The automatic splicing unit is in the form of a movable vehicle with wheels/rails. The splicing vehicles stop at the corresponding spindle positions needing splicing attention. The splicing unit typically moves longitudinally over the rack aisle. Before starting the splicing operation, the splicing vehicle is stopped in front of the spindle position of the ring spinning machine. Then, the end of the break available in the worsted cop must be found and detached from the cop, which is then lifted to enable the splicing operation. This automatic detachment of the yarn from the worsted cop is a major challenge commonly faced by the spinning industry.
In the known splicing device as shown in fig. 1, the automatic splicing unit 1 is moved longitudinally along the passageway of the ring spinning machine. A ring spinning machine is capable of winding a yarn onto a bobbin, a so-called cop 3, mounted to a spinning spindle. When yarn breakage occurs in the spinning process, the broken yarn is entangled in the worsted cop 3. In order to enable the splicing, the entangled yarn ends must be separated from the cop 3. In order to pick up a broken yarn from the cop, the automatic splicing unit is provided with a yarn pick-up suction device. A cylindrical suction nozzle 5 having a trumpet-shaped nozzle extends from the splicing unit and is positioned generally at a predetermined distance above the top of the spinning cops 3. The distance maintained in the known device is about 15mm upwards from the top of the worsted cop 3. In this type of device, the broken end cannot be picked up from the bottom of the chase length (chase length) of the cop 3. Even if a broken yarn exists somewhere at the top of the length of the tube groove, the difference in height of the suction nozzle 5 from the cop 3 does not provide the suction required to effectively pick up the broken yarn from the cop 3. Therefore, the existing devices are unreliable in picking up the end of the broken yarn from the cop.
There is a need to develop an improved method of picking up a broken yarn from a cop which reliably picks up the yarn without errors, and the invention provides a solution thereto.
Disclosure of Invention
These objects are provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This purpose is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
It is an important object of the present invention to provide a solution to the disadvantages of automatic splicing units.
Another object of the present invention is to provide a device for picking up a broken end from a spinning cop to enable automatic splicing in a ring spinning machine.
It is still another object of the present invention to provide a device for picking up a broken yarn at any position on the length of a groove of a cop in a ring spinning machine.
Another object of the present invention is to provide a device for separating a broken end from a spinning cop of a ring spinning machine.
It is still another object of the present invention to provide a method for picking up a broken end from a cop in a ring spinning machine.
The object of the present invention is not limited to the above-described problems. Other technical problems not mentioned will become apparent to those skilled in the art from the following description.
According to one aspect of the present invention, a yarn take-up device for an automatic yarn splicing unit in a ring spinning machine includes a suction jet assembly having a hose with a first end and a second end. The first end is connected to a source of suction air and the second end has a circumferential housing. A drive coupled to the suction jet assembly is capable of moving the suction jet assembly vertically up and down such that the circumferential housing is capable of enclosing the cop outside of the top of the cop. The suction air source generates a suction pull that pulls into the housing the end of the yarn break present at any location in the length of the tube slot from the bottom to the top of the cop.
According to another aspect of the invention, a method for picking up a yarn by a yarn picking up device comprises the steps of: the suction jet assembly is moved from the drafting zone to the cop zone such that a circumferential housing of the suction jet assembly surrounds the cop outside of the top of the cop. In the next step, the tangled broken ends are picked up by suction pulling into the housing, wherein the broken ends are picked up at any position on the cop in the length of the chase from bottom to top. In the next step, the suction jet assembly is moved from the cop zone to the drafting zone to enable an automatic splicing operation in the ring spinning machine.
Other aspects and advantages of the invention will become apparent from the following description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention.
Drawings
For a more detailed understanding of the present invention, reference is made to the accompanying drawings, in which:
fig. 1 shows a side view of a yarn take-up device of a splicing unit according to the prior art;
fig. 2 shows a side view of a yarn take-up device of a splicing unit according to an embodiment of the invention;
fig. 3 shows a side view of a yarn take-up device of a splicing unit located in the cop area for taking up a broken yarn end from a cop according to an embodiment of the invention; and is
Fig. 4 shows a side view of a yarn take-up device of a splicing unit located at a drafting zone for a subsequent splicing operation according to one embodiment of the invention.
The 3over 3 under draft devices (3over 3draft arrangement) shown in the figures herein are for illustration purposes only. The drafting device also comprises a 4-over-4-down drafting and compact spinning drafting device and the like.
Skilled artisans will appreciate that elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve understanding of various exemplary embodiments of the present disclosure.
In the figures, it should be noted that the same reference numerals are used to designate the same or similar elements and features.
Detailed Description
The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to aid understanding, but such details are to be regarded as illustrative only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
An automatic splicing unit for a ring spinning machine is provided. The automatic splicing unit moves longitudinally along the passageway of the ring spinning machine. A ring spinning machine is capable of winding a yarn onto a bobbin (so-called cop) mounted to a spinning spindle. When yarn breakage occurs during the spinning process, the broken yarn is entangled in the worsted cop. To enable the splicing, the entangled yarn ends must be picked up from the cop. Therefore, the automatic splicing unit assists the yarn splicing operation during the occurrence of a yarn breakage event in the ring spinning machine. The correct pick-up of the broken ends from the worsted cop is essential for a successful splicing of the broken ends. In order to enable the picking up of the broken yarn end, the invention provides a yarn picking-up device in the automatic splicing unit.
Fig. 2 shows a side view of a yarn take-up device in a splicing unit according to an embodiment of the invention. Accordingly, the yarn take-up device 100 for the automatic yarn splicing unit 10 separates the broken yarn end 112 from the spinning cop 108 to enable an automatic splicing operation in the ring spinning machine 20, the device 100 including a suction jet assembly having a hose 102 having a first end and a second end. The first end of the hose 102 is connected to a source of suction air (not shown in the figures) and the second end has a circumferential housing 104. Further, the driving device 106 is coupled with the suction jet assembly to vertically move the suction jet assembly up and down. The drive means 106 may be a hydraulic drive unit with a piston and cylinder arrangement with an actuator, or a pneumatic drive unit. The drive means may also comprise a screw, a cylinder and all types of actuating means.
Furthermore, the device 100 comprises a control device functionally connected with a driving means 106 comprising a control unit coupled with a plurality of sensors and a stopper to precisely control the movement of the moving suction jet assembly to move the circumferential housing 104 vertically up and down, so that the circumferential housing 104 can stop anywhere around the cop 108 externally from top to bottom. So that the suction air source generates a suction pulling force which pulls the broken yarn end 112 into the housing 104 at any position on the length of the tube slot of the cop 108 from bottom to top to enable an automatic splicing operation in the ring spinning machine 20.
During the yarn pick-up process, the suction jet assembly of the yarn pick-up device 100 is moved from the drafting zone 114 to the cop zone 116 such that the circumferential housing 104 of the suction jet assembly surrounds the cop 108. The inner diameter of the hose 102 and/or housing 104 of the suction jet assembly is made substantially larger than the outer diameter of the cop 108. Corresponding fig. 3 shows a side view of a yarn take-up device of the splicing unit located at the cop area 116, enclosing the cop 108 to take up a broken end from the cop, according to one embodiment of the invention.
In the next step, the suction air source generates a suction pull that pulls the broken end 112 into the housing 104 at any position on the length of the channel from bottom to top of the cop 108. In a further step, the suction jet assembly is moved from the cop zone 116 to the drafting zone 114 to enable an automatic splicing operation in the ring spinning machine 20. Fig. 4 shows a side view of a yarn take-up device of a splicing unit at a drafting zone for a subsequent splicing operation after successfully taking up a broken yarn end from a cop according to one embodiment of the invention.
According to an example embodiment, the suction jet assembly, including the circumferential housing 104, externally surrounds the cop 108 while moving vertically from top to bottom. During this time, the aspirating jet assembly reaches a position adjacent the balloon control ring 110, traveling approximately 100mm downward. The moving suction jet assembly substantially covers at least 85mm of the height of the cop 108 from the top and surrounds the cop 108 before reaching a position adjacent to the balloon control ring 110. The inner diameter of the suction jet assembly is designed so that it can surround the cop 108 to effectively pick up the broken yarn 112. The movable suction jet assembly successfully picks up the entangled cut yarn 112 from the cop 108 at any location along the length of the chase, even at the bottom of the length of the chase. The distance between the balloon control ring 110 and the suction jet assembly at yarn pick-up is only about 25mm for the bottommost ring track position, as compared to the distance of about 125mm for known devices.
According to one embodiment of the invention, the movable suction jet assembly mounted in the splicing unit can be moved forward by suitable drive means before the yarn pick-up. The downward movement of the suction jet assembly for surrounding the cop is then achieved by means of a pneumatic or hydraulic drive installed in the automatic splicing unit.
The above described automatic splicing unit for ring spinning machines thus provides a reliable solution for picking up a broken end from a cop. The vertically movable suction jet over the length of the channel of the cop picks up the broken yarn from any position from the bottom to the top of the cop based on the position of the broken yarn.
For the exemplary embodiment of the present invention, a yarn take-up device for an automatic yarn splicing unit is employed. Various modifications to these embodiments will be readily apparent to those skilled in the art from the description and drawings herein. Thus, the present description is not intended to be limited to the embodiments shown with the drawings but is to be accorded the widest scope consistent with the principles and novel and inventive features described/disclosed or suggested herein. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (16)
1. A yarn take-up device for an automatic yarn joining unit for separating a broken end from a spinning cop to enable an automatic splicing operation in a ring spinning machine, the yarn take-up device comprising:
a suction jet assembly comprising a hose having a first end and a second end, the first end being connected to a source of suction air and the second end having a circumferential housing;
a drive coupled to the suction jet assembly capable of moving the suction jet assembly vertically up and down such that the circumferential housing is capable of enclosing the cop outside of the top of the cop; and is
The suction air source generates a suction pull which pulls the broken yarn end present at any position on the length of the tube groove of the cop from bottom to top into the circumferential housing.
2. Yarn take-up device according to claim 1, wherein the drive is a pneumatic drive unit, a hydraulic drive unit, or an electric or screw type.
3. Yarn pick-up device according to claim 1, wherein a control device is provided for precisely controlling the moving suction jet assembly vertically up and down, said control device comprising a control unit coupled with a plurality of sensors and a stopper.
4. The yarn pickup device according to claim 1, wherein an inner diameter of the suction jet assembly is substantially larger than an outer diameter of the cop.
5. The yarn pickup device according to claim 1, wherein the suction jet assembly moves from the draft zone to the cop zone to a position adjacent to the balloon control ring and surrounds the cop at a top portion.
6. The yarn pickup device according to claim 5, wherein said suction jet assembly reaches a position adjacent to said balloon control ring, traveling about 100mm downward.
7. The yarn pickup device according to claim 6, wherein the moving suction jet assembly substantially covers a cop height of at least 85mm from the top of the cop and surrounds the cop.
8. Yarn pick-up device according to claim 5, wherein the distance between the balloon control ring and the suction jet assembly is preferably 25mm for the bottommost ring track position.
9. The yarn pickup device according to claim 1, wherein the suction jet assembly is movable downward to completely surround the cop throughout the length of the channel.
10. The yarn take-up device according to claim 1, wherein the suction jet assembly is capable of taking up a cut yarn from the cop at the bottom of the length of the chase.
11. A method for picking up a yarn by a yarn take-up device, the method comprising the steps of:
moving a suction jet assembly from a draft zone to a cop zone such that a circumferential housing of the suction jet assembly surrounds the cop outside of a top of the cop;
picking up entangled cut ends by drawing them into the circumferential housing by suction, the cut ends being picked up at any location on the cop along the length of the chase from bottom to top; and
moving the suction jet assembly from the cop zone to the draft zone to enable an automatic splicing operation in a ring spinning machine.
12. The method of picking up a yarn of claim 11, wherein the suction jet assembly reaches a position adjacent to a balloon control ring while moving from the draft zone to the cop zone and surrounds the cop at a top portion.
13. The method of picking a yarn of claim 12, wherein the suction jet assembly reaches a position adjacent the balloon control ring traveling about 100mm downward.
14. The method of picking a yarn of claim 13 wherein the moving suction jet assembly substantially covers a cop height of at least 85mm from the top of the cop and surrounds the cop.
15. A method of yarn pick-up according to claim 12, wherein the distance between the balloon control ring and the suction jet assembly is preferably 25mm for the bottommost ring track position.
16. The method of picking a yarn of claim 11, wherein the suction jet assembly is movable downward to completely surround the cop throughout the length of the chase.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN201841034136 | 2018-09-11 | ||
| IN201841034136 | 2018-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110886038A true CN110886038A (en) | 2020-03-17 |
Family
ID=67539252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910854102.2A Pending CN110886038A (en) | 2018-09-11 | 2019-09-10 | Yarn take-up device for textile machines and method |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3643819A1 (en) |
| CN (1) | CN110886038A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687027A (en) * | 2022-03-31 | 2022-07-01 | 杭州君辰机器人有限公司 | Line hunting device and have its hunting equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3868813A (en) * | 1973-02-01 | 1975-03-04 | Heberlein Hispano Sa | Device for winding-off yarn ends |
| US5090189A (en) * | 1989-09-30 | 1992-02-25 | Zinser Textilmaschinen Gmbh | Method and apparatus for preparing a yarn package for a subsequent yarn restarting operation |
| US5333441A (en) * | 1991-06-12 | 1994-08-02 | Zinser Textilmaschinen Gmbh | Method and apparatus for restarting a textile spinning machine winding operation following a yarn break |
| WO2018050507A1 (en) * | 2016-09-14 | 2018-03-22 | Maschinenfabrik Rieter Ag | Device and method for sucking up a thread from a bobbin |
| CN107934682A (en) * | 2016-10-13 | 2018-04-20 | 索若德国两合股份有限公司 | Yarn splicing device for the station of the weaving loom that manufactures cross winding bobbin |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1304448A (en) * | 1969-02-28 | 1973-01-24 | ||
| JP2017172096A (en) * | 2016-03-21 | 2017-09-28 | プレミア・エボルビクス・プライベイト・リミテッドＰｒｅｍｉｅｒ Ｅｖｏｌｖｉｃｓ Ｐｖｔ． Ｌｔｄ． | Method for automatically detecting yarn breakage and spindle defect, and robot for restoring the same |
-
2019
- 2019-08-01 EP EP19189586.1A patent/EP3643819A1/en active Pending
- 2019-09-10 CN CN201910854102.2A patent/CN110886038A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3868813A (en) * | 1973-02-01 | 1975-03-04 | Heberlein Hispano Sa | Device for winding-off yarn ends |
| US5090189A (en) * | 1989-09-30 | 1992-02-25 | Zinser Textilmaschinen Gmbh | Method and apparatus for preparing a yarn package for a subsequent yarn restarting operation |
| US5333441A (en) * | 1991-06-12 | 1994-08-02 | Zinser Textilmaschinen Gmbh | Method and apparatus for restarting a textile spinning machine winding operation following a yarn break |
| WO2018050507A1 (en) * | 2016-09-14 | 2018-03-22 | Maschinenfabrik Rieter Ag | Device and method for sucking up a thread from a bobbin |
| CN107934682A (en) * | 2016-10-13 | 2018-04-20 | 索若德国两合股份有限公司 | Yarn splicing device for the station of the weaving loom that manufactures cross winding bobbin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687027A (en) * | 2022-03-31 | 2022-07-01 | 杭州君辰机器人有限公司 | Line hunting device and have its hunting equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3643819A1 (en) | 2020-04-29 |
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