CN111996633B - Production method for yarn false twisting and texturing and detection method for tail joint passing in yarn false twisting and texturing process - Google Patents
Production method for yarn false twisting and texturing and detection method for tail joint passing in yarn false twisting and texturing process Download PDFInfo
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- CN111996633B CN111996633B CN202010759127.7A CN202010759127A CN111996633B CN 111996633 B CN111996633 B CN 111996633B CN 202010759127 A CN202010759127 A CN 202010759127A CN 111996633 B CN111996633 B CN 111996633B
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- yarn
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/32—Counting, measuring, recording or registering devices
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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
- D01H15/002—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for false-twisting spinning machines
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- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention discloses a production method for false twisting and elasticizing of yarns and a detection method for a tail joint in the process of false twisting and elasticizing of yarns, which comprises the steps of enabling a plurality of yarn reels which are sequentially connected end to pass through a false twisting and elasticizing process, and: (1) enabling yarns of a plurality of yarn reels connected in sequence from head to tail to pass through a detection channel and then performing a false twisting and texturing process, wherein the detection channel collects position conversion information of one yarn reel which has run the yarns and is switched to the next yarn reel connected in sequence from head to tail, and each collected position conversion information marks a tail-passing connector; (2) when position conversion information is collected, the silk roll which is coiled after the false twisting and the elasticity of the tail joint exist is switched, a new false twisting and the elasticity are coiled again, and the like; the method can ensure that the tail-passing connector is easy to remove, ensures the quality of the silk roll, and simultaneously avoids the phenomenon of false or missed memorization which is easy to occur due to excessive dependence on manual intervention by automatically detecting the tail-passing connector information, thereby improving the efficiency and reducing the cost.
Description
Technical Field
The invention belongs to the field of textiles, and particularly relates to a production method for false twisting and texturing of yarns and a detection method for a tail joint in the process of false twisting and texturing of yarns.
Background
The 'yarn false twisting and texturing' refers to a yarn with certain characteristic performance obtained after a certain yarn is subjected to false twisting and texturing treatment, and includes but is not limited to polyester yarn which is relatively common in the field of textile, for example, there are mentioned POY (pre-oriented yarn (high-speed spinning)) and DTY (draw textured yarn, generally called polyester low stretch yarn), which is produced by drawing and false twist texturing a polyester pre-oriented yarn (POY for short) as a raw yarn, in the process, because the POY is in the form of coils, the tail part and the head part of the coils of the silk are necessarily in the process of manufacturing the POY into the DTY, one mode is that after one POY silk roll is produced, the other POY silk roll is replaced, the mode needs to frequently perform head lifting operation of a new silk roll through manual work, the efficiency is low, manual work is excessively relied on, mistakes are easy to make or head lifting is forgotten, and more waste silk exists; the other mode is as follows: in order to improve the production efficiency and the like, the head and the tail of a plurality of POY rolls are generally connected in sequence in production, and just because of the existence of the head-tail joint, part of the produced DTY rolls contain tail-passing joints (for example, as is common in the prior art, 15 kg of POY is usually false-twisted and elasticated to form 3 5 kg of DTY, and the last DTY usually has tail-passing joints), in order to improve the grade of the DTY rolls, the tail-passing joint information is usually recorded manually at present, and then is removed at the later stage.
Disclosure of Invention
It is an object of the present invention to overcome one or more of the deficiencies in the prior art and to provide an improved continuous process for false twisting and texturing yarns.
The invention also provides a method for detecting the tail joint passing in the yarn false twisting and texturing process.
In order to achieve the purpose, the invention adopts a technical scheme that:
a continuous production method for false-twisting and texturing yarns, which comprises the step of subjecting a plurality of yarn reels connected end to end in sequence to false-twisting and texturing, and further comprises the following steps:
(1) enabling the yarns of the yarn reels connected in sequence from head to tail to pass through a detection channel and then performing the false twisting and texturing process, wherein the detection channel collects position conversion information of one yarn reel which has run the yarns and is switched to the next yarn reel connected in sequence from head to tail, and each collected position conversion information marks one passing-tail joint;
(2) when the position conversion information is collected, the silk roll which is coiled after the false twisting and the elasticity adding of the tail joint exist is switched, and a new false twisting and the elasticity adding coiling is carried out again;
and by analogy, when the position conversion information is collected, the silk roll which is formed by false twisting and elasticizing and passes through the tail joint is switched, and a new false twisting and elasticizing roll is performed again.
According to some preferred and specific aspects of the present invention, in step (1), one yarn package of the run-off yarn enters the detection channel from a first direction, and the next yarn package of the run-off yarn enters the detection channel from a second direction, wherein the first direction is different from the second direction.
According to some preferred aspects of the invention, in the step (1), the yarn coil which finishes the yarn feeding and the subsequent yarn coil which is connected end to end in sequence are respectively positioned at the left side and the right side of the detection channel.
According to some preferred aspects of the invention, in step (1), the detection channel includes a through hole for passing the yarns of the plurality of yarn packages connected end to end in sequence, and a detection device assembly disposed on the periphery of the through hole, the detection device assembly includes a first detection device and a second detection device, the yarn package of the run-off yarn enters the through hole from a first direction and is detected by the first detection device, the yarn package of the run-off yarn enters the through hole from a second direction and is detected by the second detection device, and the first detection device and the second detection device do not detect the existence of the yarn during the process of switching the yarn package of the run-off yarn to the yarn package of the run-off yarn.
According to some preferred and specific aspects of the present invention, the first detecting device and the second detecting device are each an opto-electronic switch, and when the opto-electronic switch detects the presence of the yarn, one signal is output, and when the opto-electronic switch does not detect the presence of the yarn, the other signal is output, and the position conversion information is the other signal.
According to some preferred aspects of the present invention, the first detecting device and the second detecting device are respectively located at left and right sides of the through hole, and when the other signal is output, the yarn enters the through hole from a third direction, which is different from both the first direction and the second direction.
According to some preferred aspects of the invention, the false twist texturing process includes a control system, and the detection device assembly is communicatively coupled to the control system.
According to the present invention, the yarn includes, but is not limited to, polyester, nylon, polyethylene terephthalate, and the like.
In some embodiments of the invention, the continuous production method comprises production by a draw texturing machine, the draw texturing machine comprises a creel, and the detection channel is arranged in the unwinding center of the creel.
The invention provides another technical scheme that: a detection method for a tail joint in a yarn false-twisting and texturing process, wherein the yarn false-twisting and texturing process comprises a false-twisting and texturing process of a plurality of yarn reels which are sequentially connected end to end, and the detection method comprises the following steps:
and enabling the yarns of the yarn coils connected end to end in sequence to pass through a detection channel and then performing the false twisting and texturing process, wherein the detection channel collects position conversion information between one yarn coil which has run the yarns and the next yarn coil connected end to end in sequence, and each collected position conversion information identifies one passing-tail joint.
In the invention, after each position transformation information is collected, the position transformation information can be used as a trigger point to form operations such as marking, switching equipment, tracking and the like, thereby realizing automation, intellectualization, fine detail and the like in the whole production process.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the invention innovatively adopts the mode that the detection channel is additionally arranged in the continuous production process of yarn false twisting and texturing, the appearance of the tail-passing joint is determined and detected and recorded through the position conversion information of the yarn passing through the detection channel, and further the tail-passing joint can be ensured to be timely recorded and the yarn roll which is coiled after false twisting and texturing is switched to perform a new false twisting and texturing coiling again, so that the tail-passing joint exists on the outermost surface of the switched yarn roll and is easy to remove, the quality grade of the yarn roll is ensured, raw material yarn is hardly wasted, the production cost is greatly reduced, meanwhile, the phenomenon of error recording or omission phenomenon easily caused by excessive dependence on manual intervention in the prior art is avoided through automatically detecting the tail-passing joint information, the production efficiency is improved, and the labor cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural view of a POY yarn package of embodiment 1 of the present invention passing through a through hole and being detected by a first photoelectric switch;
FIG. 2 is a schematic diagram of the process of switching to the next POY yarn package after one POY yarn package shown in FIG. 1 is completed;
fig. 3 is a schematic structural diagram of the last POY coil in fig. 2 passing through the through hole and being detected by the second photoelectric switch, and the position of the POY coil with the wire being fed is supplemented with another POY coil which is connected end to end in sequence;
wherein, 1, a first photoelectric switch; 2. a through hole; 3. a second photoelectric switch.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples; it is to be understood that these embodiments are illustrative of the principles, essential features and advantages of the invention, and that the invention is not limited in scope by the following embodiments; the implementation conditions used in the examples can be further adjusted according to specific requirements, and the implementation conditions not indicated are generally the conditions in routine experiments.
Example 1
As shown in fig. 1 to 3, in this embodiment, a polyester pre-oriented yarn (for short, POY) is used as a raw yarn, and is drawn and false-twisted to form a DTY (drawn textured yarn, generally called as polyester low stretch yarn), and the continuous production method thereof includes: subjecting a plurality of yarn reels connected in sequence from head to tail to a false twisting and texturing process; enabling the yarns of the yarn reels connected in sequence from head to tail to pass through a detection channel and then performing the false twisting and texturing process, wherein the detection channel collects position conversion information of one yarn reel which has run the yarns and is switched to the next yarn reel connected in sequence from head to tail, and each collected position conversion information marks one passing-tail joint;
when the position conversion information is collected, the silk roll which is coiled after the false twisting and the elasticity adding of the tail joint exist is switched, and a new false twisting and the elasticity adding coiling is carried out again;
and by analogy, when the position conversion information is collected, the silk roll which is formed by coiling after the false twisting of the tail joint is added is switched, and a new false twisting and coiling is carried out again.
Specifically, as shown in fig. 1 to 3, one yarn reel that has run the yarn enters the detection channel from a first direction, and the next yarn reel that is sequentially connected end to end enters the detection channel from a second direction, where the first direction is different from the second direction.
Meanwhile, the detection channel comprises a through hole 2 for allowing the yarns of a plurality of yarn coils which are sequentially connected end to pass through and a detection device assembly arranged on the periphery of the through hole, the detection device assembly comprises a first detection device and a second detection device, one yarn coil which has run off the yarns enters the through hole 2 from the first direction and passes through the first detection device for detection, the next yarn coil which is sequentially connected end to end enters the through hole 2 from the second direction and passes through the second detection device for detection, and the yarn coil which has run off the yarns is switched to the next yarn coil which is sequentially connected end to end in the process that the first detection device and the second detection device cannot detect the existence of the yarns.
Further, the first detection device and the second detection device are respectively photoelectric switches, when the photoelectric switches detect the existence of the yarn, one signal (for example, a high-level electric signal) is output, and when the photoelectric switches do not detect the existence of the yarn, the other signal (for example, a low-level electric signal) is output, and the position conversion information is the other signal. Specifically, the first detection device and the second detection device are respectively located on the left side and the right side of the through hole 2, when the other signal is output, the yarn enters the through hole 2 from a third direction, and the third direction is different from the first direction and the second direction.
In this example, in fig. 1, the first direction indicates a direction pointing from the right to the left to the through hole 2, and the second direction indicates a direction pointing from the left to the right to the through hole 2; of course, if in fig. 3, the first direction actually indicates a direction pointing from left to right to the through-hole 2, and the second direction indicates a direction pointing from right to left to the through-hole 2; thus, in practice, the first direction in this example generally represents the position information of the POY reel being run into the through hole 2, and the second direction represents the position information of the POY reel following the POY reel being run into the through hole 2;
after the POY yarn represented by the first direction is wound, since the subsequent POY yarn roll is connected end to end with the POY yarn roll, an intermediate state as shown in fig. 2 is formed, that is, the direction in which the yarn enters the through hole 2 is not the first direction nor the second direction but is a third direction between the first direction and the second direction; meanwhile, in the state shown in fig. 2, since the yarn enters the through hole 2 from the middle basically, the yarn avoids the first optical fiber switch 1 and the second optical switch 3, that is, neither of the two optical switches can detect the existence of the yarn, at this time, the control system receives or generates an electric signal (the other signal, for example, a low level electric signal) representing position conversion information, that is, a signal appearing through the tail connector, under the prompt of the signal, the subsequent process switches the DTY yarn roll formed by the false twisting and the elastic twisting of the tail connector, and performs a new DTY winding operation again, in the process, the tail connector exists on the outer surface of the switched DTY yarn roll, and is very easy to remove, so that the grade quality of the DTY can be ensured, the waste caused by removing too much wound DTY yarn can be avoided, and the tail connector information can be automatically detected, the phenomenon of mistaking or missing in the prior art, which is easily caused by excessively depending on manual intervention, is avoided, the production efficiency is improved, and the labor cost is reduced;
Meanwhile, the detection method of the tail joint in the embodiment can be specifically applied to the production process of the elasticizer, and the detection channel is arranged at the unwinding center of the original silk frame.
The following production method and detection method are applied to the DTY (16 ingot) production process on the elasticizer in the production experiment of the national hope high-tech fiber company to track and confirm the tail use effect:
TABLE 1
TABLE 2
TABLE 3
TABLE 4
And (4) preliminary conclusion: the detection rate of 100% can be realized by confirming the tail of the polyester yarn varieties 50D, 75D, 100D and 150D with different specifications.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. A continuous production method for false twisting and texturing yarn, which comprises the step of subjecting a plurality of yarn reels connected end to end in sequence to false twisting and texturing, is characterized in that,
the continuous production method further comprises the following steps:
(1) enabling the yarns of the yarn reels connected in sequence from head to tail to pass through a detection channel and then performing the false twisting and texturing process, wherein the detection channel collects position conversion information of one yarn reel which has run the yarns and is switched to the next yarn reel connected in sequence from head to tail, and each collected position conversion information marks one passing-tail joint;
The yarn coil which finishes the yarn running enters the detection channel from a first direction, the next yarn coil which is sequentially connected end to end enters the detection channel from a second direction, and the first direction is different from the second direction;
the detection channel comprises a through hole for the yarns of the plurality of yarn coils which are sequentially connected end to pass through and a detection device assembly arranged on the periphery of the through hole, the detection device assembly comprises a first detection device and a second detection device, one yarn coil which finishes yarn walking enters the through hole from a first direction and is detected by the first detection device, the next yarn coil which is sequentially connected end to end enters the through hole from a second direction and is detected by the second detection device, and the first detection device and the second detection device cannot detect the existence of the yarn when the yarn coil which finishes yarn walking is switched to the next yarn coil which is sequentially connected end to end;
(2) when the position conversion information is collected, the silk roll which is coiled after the false twisting and the elasticity adding of the tail joint exist is switched, and a new false twisting and the elasticity adding coiling is carried out again;
And by analogy, when the position conversion information is collected, the silk roll which is formed by coiling after the false twisting of the tail joint is added is switched, and a new false twisting and coiling is carried out again.
2. The continuous yarn false twist texturing method of claim 1, wherein in step (1), the yarn lap of the run-off yarn and the yarn lap of the end-to-end yarn are respectively positioned at the left side and the right side of the detection channel.
3. The continuous production method for false twisting texturing of a yarn as claimed in claim 1, wherein the first detecting device and the second detecting device are each an opto-electronic switch, and when the opto-electronic switch detects the presence of the yarn, a signal is outputted, and when the opto-electronic switch does not detect the presence of the yarn, another signal is outputted, and the position conversion information is the another signal.
4. The continuous production method for false twisting texturing of a yarn as claimed in claim 3, wherein the first detecting device and the second detecting device are respectively disposed on the left and right sides of the through hole, and when the other signal is outputted, the yarn enters the through hole from a third direction different from both the first direction and the second direction.
5. The continuous production process for false twist texturing of a yarn as claimed in claim 1, wherein the false twist texturing process includes a control system, the detection device assembly being in communication with the control system.
6. The continuous process for false twisting and texturing a yarn as claimed in claim 1, wherein the yarn comprises dacron, nylon, polyethylene terephthalate.
7. The continuous production method of false twist texturing of yarns according to claim 1, characterized in that the continuous production method comprises the production by a texturing machine, the texturing machine comprises a creel, and the detection channel is arranged at the unwinding center of the creel.
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| CH565702A5 (en) * | 1973-01-04 | 1975-08-29 | Heberlein Hispano Sa | |
| US3943692A (en) * | 1974-05-20 | 1976-03-16 | Apag Apparatebau Ag | Mounting assembly for measuring probe on false-twist machines |
| JPS5253043A (en) * | 1975-10-20 | 1977-04-28 | Kurashiki Boseki Kk | Calculation method and apparatus for ending number of automatic winder |
| JPS6059165A (en) * | 1983-09-06 | 1985-04-05 | 菅野 寛一郎 | Twisted yarn detector by irradiation from two direction crossing at right angles |
| EP0927887A1 (en) * | 1997-12-17 | 1999-07-07 | Zellweger Luwa Ag | Method for detecting periodic defects in a sample in motion |
| DE59911886D1 (en) * | 1998-10-09 | 2005-05-12 | Saurer Gmbh & Co Kg | METHOD FOR CONTINUOUS REMOVING OF A THREAD |
| CN1267331C (en) * | 2000-04-27 | 2006-08-02 | 帝人株式会社 | Device and method for filter processing control |
| ITMI20111252A1 (en) * | 2011-07-06 | 2013-01-07 | Btsr Int Spa | DEVICE AND METHOD OF DETECTION OF A YARN SUPPLY CHANGE |
| CN108796700B (en) * | 2018-07-25 | 2021-04-20 | 浙江中丽制机工程技术有限公司 | Yarn changing method of false twist texturing machine |
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