CN111112129A - Simple removing device and method before defective yarn bobbin enters winding process - Google Patents
Simple removing device and method before defective yarn bobbin enters winding process Download PDFInfo
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- CN111112129A CN111112129A CN201911318065.XA CN201911318065A CN111112129A CN 111112129 A CN111112129 A CN 111112129A CN 201911318065 A CN201911318065 A CN 201911318065A CN 111112129 A CN111112129 A CN 111112129A
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- yarn bobbin
- conveying belt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/3412—Sorting according to other particular properties according to a code applied to the object which indicates a property of the object, e.g. quality class, contents or incorrect indication
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
- B07C5/362—Separating or distributor mechanisms
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Abstract
The invention discloses a simple removing device before defective yarn bobbins enter a winding process, which comprises a code scanner and a removing structure, wherein each spun yarn bobbin is provided with a code identifier, and position information of a spindle and code information on the spun yarn bobbin produced by the spindle are collected and stored in a database; the code scanner is connected with the database and transmits the coded information of each passing spun yarn bobbin on the scanned conveying belt to the database for comparison to determine whether the passing spun yarn bobbin is a defective spun yarn bobbin produced by a lagging spindle; and if the spun yarn bobbin is determined to be a defective spun yarn bobbin produced by a backward spindle, transmitting a defective spun yarn bobbin removing instruction to a removing structure by the database, and removing the defective spun yarn bobbin from the conveying belt by the removing structure. The defective yarn bobbin removing machine can directly remove defective yarn bobbins on the conveying belt, namely the defective yarn bobbins are removed before being fed, the working mode is reasonable, the defective yarn bobbin removing process is simplified, and the automation degree and the production efficiency of an enterprise are improved.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to a simple removing device and a simple removing method before defective yarn bobbins enter a winding process.
Background
In the spinning working flow, the last two processes are spinning and spooling. And winding the fine yarn on a fine yarn bobbin, and after the quality of the yarn is detected in the winding process, winding the qualified yarn on a cone to obtain a final product for delivery. If the quality of the yarn on a certain bobbin is detected out to be not qualified in the winding process, the automatic bobbin winder can automatically reject the yarn. At this time, the spindle corresponding to the defective yarn on the bobbin, i.e. the backward spindle, is also found out. Generally, after the position of the lagging bobbin is confirmed, the lagging bobbin produces a plurality of defective yarn bobbins in succession in the period. According to the existing process, the yarn is still conveyed to a yarn storage of a bobbin winder through a conveying belt and is detected and removed through an automatic bobbin winder. This mode of operation is obviously not reasonable and inefficient.
Disclosure of Invention
Aiming at the technical problem, the invention provides a simple removing device and a simple removing method before defective yarn bobbins enter a winding process, which can find out defective yarn bobbins produced by a laggard spindle after the position of the laggard spindle is confirmed, and remove the defective yarn bobbins in the conveying process of a conveying belt.
The technical solution adopted by the invention is as follows:
a simple rejecting device before defective yarn bobbins enter a winding process comprises a code scanner used for determining the defective yarn bobbins in a matched mode and a rejecting structure used for rejecting the defective yarn bobbins from a conveying belt;
the code scanner and the rejecting structure are both arranged on one side of a conveying belt used for conveying spun yarn bobbins into a yarn warehouse of the automatic bobbin winder;
the conveying belt is horizontally arranged, the spun yarn bobbins conveyed on the conveying belt are vertically arranged, the center of the conveying belt is provided with fixed end heads at intervals, the interior of each spun yarn bobbin is hollow, and the fixed end heads are inserted into the bottom of each spun yarn bobbin to fix the spun yarn bobbins;
the removing structure comprises a pushing block used for supporting the defective yarn bobbins on the conveying belt, the pushing block is of a gradual change structure with a flat head and gradually thickened from the head to the tail, the upper surface of the pushing block is an inclined surface which is inclined upwards from the head to the tail, a strip-shaped opening is formed in the center line of the pushing block, and when the pushing block moves towards the yarn bobbins, a fixed end is arranged in the strip-shaped opening, so that the movement of the pushing block cannot be hindered;
the pushing block is arranged at the bottom end of the vertical rod, an ejector rod used for ejecting the lifted defective yarn bobbins from the conveying belt is further arranged at the top end of the vertical rod, the ejector rod is horizontally arranged, and the ejector rod and the pushing block extend towards the direction of the spun yarn bobbins;
the bottom end of the vertical rod is also connected with one end of a rack for pushing the vertical rod to move in parallel, the rack is meshed with a gear, and the gear is in transmission connection with a first motor;
and a bobbin frame for collecting defective bobbins ejected out of the conveyer belt is further arranged on one side of the conveyer belt, and the bobbin frame and the rejecting structure are symmetrically arranged on two sides of the conveyer belt.
Furthermore, each spun yarn bobbin is provided with a code mark, and the position information of the spindle and the code information on the spun yarn bobbin produced by the spindle are collected and stored in a database; the code scanner is connected with the database and transmits the coded information of each passing spun yarn bobbin on the scanned conveying belt to the database for comparison to determine whether the passing spun yarn bobbin is a defective spun yarn bobbin produced by a lagging spindle; the database is connected with the rejecting structure, and if the spun yarn bobbin is determined to be a defective yarn bobbin produced by a backward spindle, the database transmits a defective yarn bobbin rejecting instruction to the rejecting structure, controls the rejecting structure to act, and rejects the defective yarn bobbin from the conveying belt.
Furthermore, a limit sensor for limiting the positions of defective yarn bobbins is arranged on one side of the conveying belt, the limit sensor is connected with the database and a second motor for driving the conveying belt to operate, and the distance between the limit sensor and the code scanner is smaller than the distance between two adjacent yarn bobbins on the conveying belt; and when the scanned spun yarn bobbin is determined to be a defective yarn bobbin through comparison of the database, the database starts the limit sensor, when the limit sensor senses that the defective yarn bobbin passes through, the limit sensor transmits a signal to the second motor to stop the conveying belt at a set position, and at the moment, the rejecting structure is controlled to act, so that the defective yarn bobbin is accurately taken out of the conveying belt, and the conveying belt continues to convey the spun yarn bobbin.
Furthermore, a clamping groove used for limiting the defective yarn bobbin is also arranged in the middle of the vertical rod.
A method for eliminating defective yarn bobbins before entering a winding process adopts the device, and comprises the following steps:
(1) carrying out coding identification on the spun yarn bobbins through an ink-jet printer or a coding engraving machine, scanning each passed spun yarn bobbin on the conveying belt through a code scanner, and determining whether the spun yarn bobbin is a defective spun yarn bobbin; if yes, starting the limit sensor, and transmitting a signal to the second motor when the limit sensor senses that a bobbin passes through, so that the conveying belt stops at a set position;
(2) after the conveying belt stops, removing the structural action, and removing the defective yarn bobbin from the conveying belt; the specific removing process comprises the following steps:
(21) after receiving the instruction signal, the first motor rotates to drive the gear to rotate, and further drive the rack to move;
(22) the rack pushes the pushing block and the ejector rod to horizontally move towards the direction of the conveying belt, when the pushing block moves to the position of a defective yarn bobbin, the head of the pushing block is inserted into the bottom end of the defective yarn bobbin, and a fixed end on the conveying belt for fixing the defective yarn bobbin is just arranged in a middle strip-shaped opening of the pushing block, so that the movement of the pushing block is not hindered;
(23) the inclined plane contacted with the bottom end of the defective yarn bobbin is gradually raised along with the continuous forward pushing of the pushing block, so that the defective yarn bobbin is driven to be lifted upwards; when the defective yarn bobbin is lifted upwards, the defective yarn bobbin is limited by the clamping groove, and when the defective yarn bobbin is lifted to be separated from a fixed end on the conveying belt, the defective yarn bobbin is toppled under the pushing action of the ejector rod and falls into a bobbin frame on one side of the conveying belt;
(24) the first motor rotates reversely, the pushing block and the ejection rod are driven to return to the original positions through the gear and the rack, and a next removing instruction is waited;
(3) and after the defective yarn bobbins are removed from the conveying belt, the conveying belt continues to rotate, and the spun yarn bobbins are conveyed into a yarn storage of the automatic bobbin winder.
The beneficial technical effects of the invention are as follows:
the defective yarn bobbin eliminating device can directly eliminate defective yarn bobbins on the conveying belt, namely, the defective yarn bobbins are eliminated before being arranged on the machine, defective yarn bobbins produced subsequently by lagging spindles are prevented from entering a yarn warehouse of a bobbin winder, the defective yarn bobbins are detected and eliminated through the automatic bobbin winder, the working mode is reasonable, the defective yarn bobbin eliminating process is simplified, and the automation degree and the production efficiency of enterprises are improved. The removing device is ingenious in design, reasonable in structure, simple and convenient to operate and low in running cost.
Drawings
The invention will be further described with reference to the following detailed description and drawings:
FIG. 1 is a schematic structural diagram of a simple rejecting device before defective yarn bobbins enter a spooling process;
FIG. 2 is a schematic structural diagram of an embodiment of a removing structure in the removing device according to the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic structural diagram of another embodiment of a removing structure in the removing device according to the present invention;
FIG. 5 is a top view of a card slot in the rejection structure of the present invention;
fig. 6 is a schematic view showing a fixing mode of the spun yarn bobbin of the present invention when it is transported on a transport belt.
Detailed Description
With reference to the attached drawings, the simple removing device for the defective yarn bobbins before entering the winding process comprises a code scanner 1 used for determining the defective yarn bobbins in a matched mode and a removing structure 3 used for removing the defective yarn bobbins from a conveying belt 2. The code scanner 1 and the rejecting structure 3 are both arranged on one side of a conveying belt 2 used for conveying spun yarn bobbins into a yarn bank of the automatic winder. As shown in fig. 1, the code scanner 1 is located on one side of the conveyor belt 2 and the reject structure 3 is located on the other side of the conveyor belt 2.
The conveyer belt 2 is horizontally arranged, the spun yarn bobbins 4 conveyed on the conveyer belt are vertically arranged, the fixed end heads 21 are arranged at intervals in the center of the conveyer belt, the spun yarn bobbins 4 are hollow, the fixed end heads 21 are inserted into the bottoms of the spun yarn bobbins to fix the spun yarn bobbins, and the spun yarn bobbins are ensured to be in a standing posture in the conveying process of the conveyer belt, as shown in fig. 6.
As shown in fig. 2, the rejecting structure 3 includes a pushing block 31 for lifting up a defective yarn bobbin on the conveyor belt, the pushing block 31 is a gradual structure with a flat head and gradually increasing thickness from the head to the tail, the upper surface of the pushing block is an inclined surface inclined upward from the head to the tail, a strip-shaped opening 32 is arranged at the center line of the pushing block, and when the pushing block moves towards the yarn bobbin, the fixed end 21 is placed in the strip-shaped opening 32, so that the movement of the pushing block is not hindered.
The pushing block 31 is arranged at the bottom end of the vertical rod 33, an ejector rod 34 used for ejecting the lifted defective yarn bobbins from the conveying belt is further arranged at the top end of the vertical rod, the ejector rod 34 is horizontally arranged, and the ejector rod 34 and the pushing block 31 extend towards the direction of the spun yarn bobbins. The bottom end of the vertical rod 33 is also connected with one end of a rack 35 which pushes the vertical rod to move in parallel, the rack 35 is meshed with a gear 36, and the gear 36 is in transmission connection with a first motor. And a bobbin frame 5 for collecting defective bobbins ejected out of the conveyer belt is further arranged on one side of the conveyer belt 2, and the bobbin frame 5 and the rejecting structure 3 are symmetrically arranged on two sides of the conveyer belt.
Furthermore, a plurality of coding marks 41 are required to be arranged at the end of each spun yarn bobbin, and the coding marks 41 are distributed at intervals around the end of the spun yarn bobbin. The coded mark can be made on the bobbin by using an ink-jet printer or a code engraving machine. Meanwhile, the position information of the spindle and the coding information on the spun yarn bobbin produced by the spindle are collected and stored in a database in advance. Specifically, various means can be adopted, for example, the encoded information on the spun yarn bobbin produced on a certain row of spindles is sequentially scanned by devices such as a code scanner, that is, the encoded information on the spun yarn bobbin produced by a certain row of first spindles is firstly collected, then the encoded information on the spun yarn bobbin produced by a second spindle is collected, and the above steps are sequentially carried out, so that the position information of the upper spindle and the encoded information of the spun yarn bobbin produced correspondingly can be stored in the database. Therefore, after the position information of the lagging spindle is determined, the defective yarn bobbin coding information correspondingly produced by the lagging spindle can be searched and determined. The spindle can also be coded, and the coded information on the spindle and the coded information on the spun yarn bobbin produced by the spindle are simultaneously collected during collection, the link between the position of the spindle and the coded information on the spun yarn bobbin produced by the spindle is established, and the link is stored in a database.
The code scanner 1 arranged on one side of the conveying belt is also connected with the database, and the code scanner 1 transmits the code information of each passing spun yarn bobbin on the scanned conveying belt to the database for comparison to determine whether the passing spun yarn bobbin is a defective spun yarn bobbin produced by a lagging spindle. The database is connected with the control device, the control device is connected with the first motor of the rejecting structure, and the connection mode is a conventional means. When the spun yarn bobbin is determined to be a defective yarn bobbin produced by a backward spindle, the database transmits a defective yarn bobbin removing instruction to the control device, and the control device controls the removing structure to move to remove the defective yarn bobbin from the conveying belt, so that the quality qualification rate of the yarn on the spun yarn bobbin conveyed to the yarn storage of the bobbin winder can be ensured.
As a further design of the invention, a limit sensor 6 for limiting the position of a defective yarn bobbin is further arranged on one side of the conveyor belt 2, the limit sensor 6 is connected with the database and a second motor for driving the conveyor belt to operate, and the distance between the limit sensor 6 and the code scanner 1 is smaller than the distance between two adjacent yarn bobbins on the conveyor belt. When the scanned spun yarn bobbin is determined to be a defective spun yarn bobbin through database comparison, the database starts the limit sensor 6, when the limit sensor senses that the defective spun yarn bobbin passes through, a signal is transmitted to the second motor, the conveying belt is stopped at a set position, the rejecting structure 3 is controlled to act at the moment, and the defective spun yarn bobbin is accurately taken out of the conveying belt, and the conveying belt continues to convey the spun yarn bobbin. Through the setting of limit sensor 6, can ensure that the defective yarn bobbin on the conveyer belt stops in the settlement position, conveniently rejects the accurate positioning of structure 3 and rejects.
Furthermore, a clamping groove 7 for limiting the defective yarn bobbin is arranged in the middle of the vertical rod. Through the setting of draw-in groove 7, can play limiting displacement to the defective yarn bobbin that rises slowly when the spool was rejected, ensure that it finally receives the effect of knock-out lever 34, topple over towards the direction of setting for, fall into in spool frame 5.
A method for eliminating defective yarn bobbins before entering a winding process adopts the device, and comprises the following steps:
a, carrying out code identification on the spun yarn bobbin through an ink-jet printer or a code engraving machine, and collecting and storing the position information of the spindle and the code information on the spun yarn bobbin produced by the spindle into a database.
b, when the quality of yarn on a certain spun yarn bobbin is detected to be not in accordance with the requirement in the winding process, the automatic winder can automatically eliminate the defective spun yarn bobbin, and then the spindle which generates the defective yarn on the spun yarn bobbin, namely the laggard spindle, is found out by adopting the existing methods such as spindle-by-spindle searching and the like.
c, searching the code information on the spun yarn bobbin produced by the laggard spindle in a database.
d, scanning the code information of each passing spun yarn bobbin on the conveyor belt through the code scanner, and transmitting the code information to the database to be compared with the found code information on the spun yarn bobbin produced by the lagging spindle, so as to determine whether the passing spun yarn bobbin is the defective spun yarn bobbin produced by the lagging spindle.
e, when the scanned spun yarn bobbin is determined to be a defective yarn bobbin through comparison of the database, starting a limit sensor by the database, and transmitting a signal to a second motor to stop the conveying belt at a set position when the limit sensor senses that the yarn bobbin passes through.
And f, after the conveying belt stops, the database transmits a defective yarn bobbin removing instruction to the removing structure, the removing structure is controlled to move, and the defective yarn bobbin is removed from the conveying belt. The specific removing process comprises the following steps:
after the f1 eliminating structure receives the instruction signal of the database, the first motor rotates to drive the gear 36 to rotate, and further drive the rack 35 to move.
f2 the rack 35 pushes the pushing block 31 and the ejector rod 34 to move horizontally towards the direction of the conveyer belt, when the pushing block moves to the position of the defective yarn bobbin, the head of the pushing block is inserted into the bottom end of the defective yarn bobbin, the fixed end 21 of the conveyer belt for fixing the defective yarn bobbin is just arranged in the middle strip-shaped opening 32 of the pushing block, and the movement of the pushing block is not hindered.
f3, the pushing block continues to push forwards, the inclined plane contacted with the bottom end of the defective yarn bobbin gradually rises, and the defective yarn bobbin is driven to be lifted upwards; in the process that the defective yarn bobbin is upwards supported, the clamping groove 7 limits the defective yarn bobbin, and when the defective yarn bobbin rises to be separated from the fixed end on the conveying belt, the defective yarn bobbin is toppled over under the pushing action of the ejector rod 34 and falls into the bobbin frame 5 on one side of the conveying belt.
f4 the first motor rotates reversely, the push block and the ejection rod are driven to return to the original position by the gear 36 and the rack 35, and the next removing instruction is waited.
And g, after the defective yarn bobbins are removed from the conveying belt, the conveying belt continues to rotate, and the spun yarn bobbins are conveyed into a yarn storage of the automatic bobbin winder.
The technical contents not mentioned in the above modes can be realized by adopting or referring to the prior art.
It is intended that any equivalents, or obvious modifications, which may be made by those skilled in the art in light of the teachings herein, be within the scope of the present invention.
Claims (5)
1. A simple removing device before defective yarn bobbins enter a winding process is characterized in that: the device comprises a code scanner used for determining defective yarn bobbins in a matching manner and a removing structure used for removing the defective yarn bobbins from a conveying belt;
the code scanner and the rejecting structure are both arranged on one side of a conveying belt used for conveying spun yarn bobbins into a yarn warehouse of the automatic bobbin winder;
the conveying belt is horizontally arranged, the spun yarn bobbins conveyed on the conveying belt are vertically arranged, the center of the conveying belt is provided with fixed end heads at intervals, the interior of each spun yarn bobbin is hollow, and the fixed end heads are inserted into the bottom of each spun yarn bobbin to fix the spun yarn bobbins;
the removing structure comprises a pushing block used for supporting the defective yarn bobbins on the conveying belt, the pushing block is of a gradual change structure with a flat head and gradually thickened from the head to the tail, the upper surface of the pushing block is an inclined surface which is inclined upwards from the head to the tail, a strip-shaped opening is formed in the center line of the pushing block, and when the pushing block moves towards the yarn bobbins, a fixed end is arranged in the strip-shaped opening, so that the movement of the pushing block cannot be hindered;
the pushing block is arranged at the bottom end of the vertical rod, an ejector rod used for ejecting the lifted defective yarn bobbins from the conveying belt is further arranged at the top end of the vertical rod, the ejector rod is horizontally arranged, and the ejector rod and the pushing block extend towards the direction of the spun yarn bobbins;
the bottom end of the vertical rod is also connected with one end of a rack for pushing the vertical rod to move in parallel, the rack is meshed with a gear, and the gear is in transmission connection with a first motor;
and a bobbin frame for collecting defective bobbins ejected out of the conveyer belt is further arranged on one side of the conveyer belt, and the bobbin frame and the rejecting structure are symmetrically arranged on two sides of the conveyer belt.
2. The simple defective yarn bobbin removing device before entering the winding process according to claim 1, is characterized in that: each spun yarn bobbin is provided with a coding mark, and position information of the spindle and coding information on the spun yarn bobbin produced by the spindle are collected and stored in a database; the code scanner is connected with the database and transmits the coded information of each passing spun yarn bobbin on the scanned conveying belt to the database for comparison to determine whether the passing spun yarn bobbin is a defective spun yarn bobbin produced by a lagging spindle; the database is connected with the rejecting structure, and if the spun yarn bobbin is determined to be a defective yarn bobbin produced by a backward spindle, the database transmits a defective yarn bobbin rejecting instruction to the rejecting structure, controls the rejecting structure to act, and rejects the defective yarn bobbin from the conveying belt.
3. The simple defective yarn bobbin removing device before entering the winding process according to claim 2 is characterized in that: a limit sensor for limiting the positions of the defective yarn bobbins is further arranged on one side of the conveying belt, the limit sensor is connected with the database and a second motor for driving the conveying belt to operate, and the distance between the limit sensor and the code scanner is smaller than the distance between two adjacent yarn bobbins on the conveying belt; and when the scanned spun yarn bobbin is determined to be a defective yarn bobbin through comparison of the database, the database starts the limit sensor, when the limit sensor senses that the defective yarn bobbin passes through, the limit sensor transmits a signal to the second motor to stop the conveying belt at a set position, and at the moment, the rejecting structure is controlled to act, so that the defective yarn bobbin is accurately taken out of the conveying belt, and the conveying belt continues to convey the spun yarn bobbin.
4. The simple defective yarn bobbin removing device before entering the winding process according to claim 1, is characterized in that: a clamping groove used for limiting the defective yarn bobbin is also arranged in the middle of the vertical rod.
5. A method for rejecting defective yarn bobbins before entering a spooling process, using a device according to any of claims 1 to 4, characterized in that it comprises the following steps:
(1) carrying out coding identification on the spun yarn bobbins through an ink-jet printer or a coding engraving machine, scanning each passed spun yarn bobbin on the conveying belt through a code scanner, and determining whether the spun yarn bobbin is a defective spun yarn bobbin; if yes, starting the limit sensor, and transmitting a signal to the second motor when the limit sensor senses that a bobbin passes through, so that the conveying belt stops at a set position;
(2) after the conveying belt stops, removing the structural action, and removing the defective yarn bobbin from the conveying belt; the specific removing process comprises the following steps:
(21) after receiving the instruction signal, the first motor rotates to drive the gear to rotate, and further drive the rack to move;
(22) the rack pushes the pushing block and the ejector rod to horizontally move towards the direction of the conveying belt, when the pushing block moves to the position of a defective yarn bobbin, the head of the pushing block is inserted into the bottom end of the defective yarn bobbin, and a fixed end on the conveying belt for fixing the defective yarn bobbin is just arranged in a middle strip-shaped opening of the pushing block, so that the movement of the pushing block is not hindered;
(23) the inclined plane contacted with the bottom end of the defective yarn bobbin is gradually raised along with the continuous forward pushing of the pushing block, so that the defective yarn bobbin is driven to be lifted upwards; when the defective yarn bobbin is lifted upwards, the defective yarn bobbin is limited by the clamping groove, and when the defective yarn bobbin is lifted to be separated from a fixed end on the conveying belt, the defective yarn bobbin is toppled under the pushing action of the ejector rod and falls into a bobbin frame on one side of the conveying belt;
(24) the first motor rotates reversely, the pushing block and the ejection rod are driven to return to the original positions through the gear and the rack, and a next removing instruction is waited;
(3) and after the defective yarn bobbins are removed from the conveying belt, the conveying belt continues to rotate, and the spun yarn bobbins are conveyed into a yarn storage of the automatic bobbin winder.
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| CN201911318065.XA CN111112129B (en) | 2019-12-19 | 2019-12-19 | Simple removing device and method before defective yarn bobbin enters winding process |
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| CN201911318065.XA CN111112129B (en) | 2019-12-19 | 2019-12-19 | Simple removing device and method before defective yarn bobbin enters winding process |
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