CN101831758B - Detection device and method of weft breakage of double-axis warp knitting machine - Google Patents
Detection device and method of weft breakage of double-axis warp knitting machine Download PDFInfo
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- CN101831758B CN101831758B CN 201010177090 CN201010177090A CN101831758B CN 101831758 B CN101831758 B CN 101831758B CN 201010177090 CN201010177090 CN 201010177090 CN 201010177090 A CN201010177090 A CN 201010177090A CN 101831758 B CN101831758 B CN 101831758B
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Abstract
The invention relates to a detection device and a detection method of the weft breakage of a double-axis warp knitting machine. The detection device comprises a programmable computer controller, an input/output module and an irreflexive photoelectric sensor, wherein the programmable computer controller is connected with the input/output module through communication; and the irreflexive photoelectric sensor comprises an infrared transmitter module and an infrared receiver module which are connected with the input/output module through communication respectively. The detection method using the detection device comprises: setting the rotation period TR of the spindle of the double-axis warp knitting machine as D/RI; setting a yarn hanging mode M; detecting if a weft is broken according to the detected position of the weft by the programmable computer controller; and when the programmable computer controller determines the weft is broken, stopping the machine (including emergently stopping the machine) and stopping the weft breakage detection function. The detection device of the invention is simple in structure; and the effect of the detection of weft breakage by the detection method is desirable.
Description
Technical field
The present invention relates to a kind of Yarn break checkout gear and detection method thereof of biaxial warp knitting machine weft yarn.
Background technology
The weft yarn hook of biaxial warp knitting machine paving latitude is 8 inches, and existing weft yarn hook has two kinds: per inch has 2 or 3 to hang the yarn hook.According to technological requirement, hang a yarn on each weft yarn hook, also can hang a yarn on a weft yarn hook, hung one; Like this paving Weft handling device once multipotency lay 8 * 2=16 or 8 * 3=24 root weft yarn simultaneously, the weft yarn of completing is arranged in order by chain and sends into the head braiding.At present in textile industry, many Yarn break checkout gears being arranged, is generally all independent checkout equipment, and it is comprised of checkout equipment and treatment facility.Checkout equipment is generally to comprise that lens transmitter, lens receiver and photoreceiver carry out correlation and pick up survey, detected yarn is between lens transmitter and lens receiver, the light source that is the lens transmitter sends laser or visible or infrared light ripple, light wave becomes collimated light beam through lens focus, and the scioptics receiver first focuses to photoreceiver by collimated light beam.Block part light when yarn is arranged, photoreceptor sensitization has been lacked, i.e. weft yarn broken yarn not; When weft yarn sees through whole light, photoreceiver sensitization is many, judges the weft yarn broken yarn, according to receiver sensitization, how much can judge whether broken yarn of weft yarn, and conventional broken yarn correlation checkout gear is shown in Fig. 4.But, be independent of like this cost that the Yarn break checkout gear of a whole set of machinery buys higher, and the easy dust stratification dirt of the camera lens of lens receiver, reliability is low poor.
Summary of the invention
The objective of the invention is: provide a kind of not only detect effective, reliability is high, and the Yarn break checkout gear of the low biaxial warp knitting machine weft yarn of cost and detect the detection method of weft yarn broken yarn with this checkout gear.
In order to achieve the above object, technical scheme of the present invention is: a kind of Yarn break checkout gear of biaxial warp knitting machine weft yarn, comprise programmable computer controller and input/go out module, described programmable computer controller and input/go out module to communicate to connect, also comprise the diffuse reflection type photoelectric sensor, described diffuse reflection type photoelectric sensor comprises infrared transmission module and infrared receiving module, described infrared transmission module and infrared receiving module respectively with input/go out module communication connection.
In above-mentioned Yarn break checkout gear, the preferred model of described diffuse reflection type photoelectric sensor is 1040-300-506.
A kind of broken yarn detection method of biaxial warp knitting machine weft yarn, comprise the following steps:
A, biaxial warp knitting machine main shaft rotation period T is set on programmable computer controller
r=D/RI, wherein, D is two adjacent hook distances that are covered with the latitude hook of weft yarn, the rotating speed that R is the biaxial warp knitting machine main shaft, I are biaxial warp knitting machine main shaft and the speed reducing ratio that spreads the latitude chain, wherein T
raccording to the resulting theoretical value of formula;
B, arrange on programmable computer controller and hang yarn mode M, described extension yarn mode M hangs a yarn on each weft yarn hook, or on a weft yarn hook yarn of extension;
C, above the two ends of weft yarn, the diffuse reflection type photoelectric sensor all is housed, the infrared transmission module of described diffuse reflection type photoelectric sensor is infrared radiation continuously, when the infrared ray that infrared transmission module gives off runs into yarn to the surrounding diffuse reflection, infrared receiving module receives infrared ray, send the signal that weft yarn detected, and signal is delivered to the position that programmable computer controller is judged weft yarn by inputting/go out module;
D, programmable computer controller are judged whether broken yarn of weft yarn according to the position that weft yarn detected, and concrete steps are:
(d
1), set up the Mathematical Modeling of broken yarn detection window at programmable computer controller, and the time P that weft position detected is set
r=MD/RI, the described time P that weft position detected
rat (P
r-Δ T)～(P
r+ Δ T), in scope, the error time of Δ T for allowing, if in the situation that do not detect weft yarn, programmable computer controller judgement weft yarn broken yarn, and warning in this time period;
(d
2), at the broken yarn detection window of programmable computer controller, if the diffuse reflection type photoelectric sensor of weft yarn one end detects the weft yarn signal, and this signal is delivered to programmable computer controller by inputting/go out module, and the diffuse reflection type photoelectric sensor of the weft yarn other end is at (P simultaneously
r-Δ T)～(P
r+ Δ T) the weft yarn signal detected equally in time, and this signal is delivered to programmable computer controller by inputting/go out module, programmable computer controller judges not broken yarn of weft yarn, otherwise, if the diffuse reflection type photoelectric sensor of the weft yarn other end is at (P
rΔ T)～(P
r+ Δ T) the weft yarn signal do not detected in time, programmable computer controller judgement weft yarn broken yarn, and warning;
At the broken yarn detection window of programmable computer controller, if the time P of weft position detected
rat (P
r-Δ T)～(P
r+ Δ T), outside scope, even programmable computer controller detects signal, programmable computer controller is not done any judgement and processing;
At the broken yarn detection window of programmable computer controller, if at (P
r-Δ T)～(P
r+ Δ T) in time, the diffuse reflection type photoelectric sensor at the two ends of weft yarn does not all detect the weft yarn signal, programmable computer controller judgement weft yarn broken yarn, and warning;
(d
3), detecting containing jagged weft yarn whether during broken yarn, if the diffuse reflection type photoelectric sensor of weft yarn top detects one or more weft yarn signal, the broken yarn detection window of programmable computer controller all is judged as the signal that same weft yarn produces, and judge not broken yarn, if the diffuse reflection type photoelectric sensor of weft yarn top does not detect the weft yarn signal, the broken yarn detection window of programmable computer controller all judges the weft yarn broken yarn, and reports to the police;
(d
4if) during programmable computer controller judgement weft yarn broken yarn, shut down and stop weft yarn broken yarn measuring ability.
In above-mentioned detection method, if programmable computer controller judges and obtain the theoretical value T of actual cycle Ti that the biaxial warp knitting machine main shaft rotates and the biaxial warp knitting machine main shaft rotation period of programmable computer controller setting
rbetween meet 0.8T
r≤ Ti≤1.2T
rduring scope, programmable computer controller carries out broken yarn judgement and processing to weft yarn;
If programmable computer controller judges and obtains the theoretical value T of actual cycle Ti that the biaxial warp knitting machine main shaft rotates and the biaxial warp knitting machine main shaft rotation period of programmable computer controller setting
rbetween do not meet 0.8T
r≤ Ti≤1.2T
rduring scope, programmable computer controller does not carry out broken yarn judgement and processing to weft yarn.
The good effect that the present invention has is: because checkout gear also comprises the diffuse reflection type photoelectric sensor, described diffuse reflection type photoelectric sensor comprises infrared transmission module and infrared receiving module, described infrared transmission module and infrared receiving module respectively with input/go out module communication connection, what the infrared transmission module in the diffuse reflection type photoelectric sensor and infrared receiving module adopted is integral structure, during use, infrared transmission module is infrared radiation continuously forwards, the infrared ray given off when running into yarn to surrounding generation Diffused IR, the dust that yarn produces can not be deposited on photoelectric sensor, avoided photoelectric sensor that the phenomenon of laying dust is arranged, and structure of the detecting device of the present invention is simple, reliability is high, the detection method of detection weft yarn broken yarn of the present invention is simple, detect effective, and the degree of accuracy is high.
The accompanying drawing explanation
Fig. 1 is the structure block diagram of checkout gear of the broken yarn of biaxial warp knitting machine weft yarn of the present invention;
Fig. 2 is that the checkout gear of the broken yarn of biaxial warp knitting machine weft yarn of the present invention is used view figure, and in figure, 4001 is detected yarn, and arrow is the direction that yarn moves;
Fig. 3 is the flow chart of detection method of the broken yarn of biaxial warp knitting machine weft yarn of the present invention;
Fig. 4 is in the structure block diagram figure of Yarn break checkout gear of biaxial warp knitting machine weft yarn in prior art 5001 to be light source, 5002 is diversing lens, 5003 for accepting lens, 5004 is photoreceiver, 5005 is the Check processing device, 6001 is detected yarn, and arrow is the direction that yarn moves;
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, 2, a kind of Yarn break checkout gear of biaxial warp knitting machine weft yarn, comprise programmable computer controller 1001 and input/go out module 2001, described programmable computer controller 1001 with input/go out module 2001 communication connections, also comprise diffuse reflection type photoelectric sensor 3001, described diffuse reflection type photoelectric sensor 3001 comprises infrared transmission module 3002 and infrared receiving module 3003, described infrared transmission module 3002 and infrared receiving module 3003 respectively with input/go out module 2001 communication connection.
The diffuse reflection type photoelectric sensor of the present invention product that preferably Ke Rui company produces, model is 1040-300-506, this model has comprised infrared transmission module and infrared receiving module; Certainly, also can adopt the diffuse reflection type photoelectric sensor of other model.
The programmable computer controller of the present invention product that preferably Bei Jialai company produces, model is 4PP420.1043-75; Input/go out that module selects is also the product that Bei Jialai company produces, model is X20DI9371; Certainly, also can adopt the programmable computer controller of other model and input/go out module.
As shown in Figure 3, a kind of broken yarn detection method of biaxial warp knitting machine weft yarn, comprise the following steps:
A, biaxial warp knitting machine main shaft rotation period T is set on programmable computer controller 1001
r=D/RI, wherein, D is two adjacent hook distances that are covered with the latitude hook of weft yarn, the rotating speed that R is the biaxial warp knitting machine main shaft, I are biaxial warp knitting machine main shaft and the speed reducing ratio that spreads the latitude chain, wherein T
raccording to the resulting theoretical value of formula;
B, arrange on programmable computer controller 1001 and hang yarn mode M, described extension yarn mode M hangs a yarn on each weft yarn hook, or on a weft yarn hook yarn of extension;
C, because adjacent weft yarn has certain spacing, weft yarn constantly moves on biaxial warp knitting machine, so programmable computer controller 1001 need to first detect the position of weft yarn, thereby, above the two ends of weft yarn, diffuse reflection type photoelectric sensor 3001 all is housed, the infrared transmission module 3002 of described diffuse reflection type photoelectric sensor 3001 is infrared radiation continuously, when the infrared ray that infrared transmission module 3002 gives off runs into yarn to the surrounding diffuse reflection, infrared receiving module 3003 receives infrared ray, send the signal that weft yarn detected, and signal is delivered to the position that programmable computer controller 1001 is judged weft yarn by inputting/go out module 2001,
D, programmable computer controller 1001 judged whether broken yarn of weft yarn according to the position that weft yarn detected, and concrete steps are:
(d
1), set up the Mathematical Modeling of broken yarn detection window at programmable computer controller 1001, and the time P that weft position detected is set
r=MD/RI, the described time P that weft position detected
rat (P
r-Δ T)～(P
r+ Δ T), in scope, the error time of Δ T for allowing, if in the situation that do not detect weft yarn, programmable computer controller 1001 judgement weft yarn broken yarns, and warning in this time period;
(d
2), because checkout gear and weft yarn there will be the reasons such as inclination, the checkout gear of top, weft yarn two ends is difficult to detect weft yarn simultaneously, thereby, broken yarn detection window at programmable computer controller 1001, if the diffuse reflection type photoelectric sensor 3001 of weft yarn one end detects the weft yarn signal, and this signal is delivered to programmable computer controller 1001 by inputting/go out module 2001, and the diffuse reflection type photoelectric sensor 3001 of the weft yarn other end is at (P simultaneously
r-Δ T)～(P
r+ Δ T) the weft yarn signal detected equally in time, and this signal is delivered to programmable computer controller 1001 by inputting/go out module 2001, programmable computer controller 1001 judges not broken yarn of weft yarns, otherwise, if the diffuse reflection type photoelectric sensor 3001 of the weft yarn other end is at (P
r-Δ T)～(P
r+ Δ T) the weft yarn signal do not detected in time, programmable computer controller (1001) judgement weft yarn broken yarn, and warning;
At the broken yarn detection window of programmable computer controller 1001, if the time P of weft position detected
rat (P
r-Δ T)～(P
r+ Δ T), outside scope, even programmable computer controller 1001 detects signal, programmable computer controller 1001 is not done any judgement and processing;
At the broken yarn detection window of programmable computer controller 1001, if at (P
r-Δ T)～(P
r+ Δ T) in time, the diffuse reflection type photoelectric sensor 3001 at the two ends of weft yarn does not all detect the weft yarn signal, programmable computer controller 1001 judgement weft yarn broken yarns, and warning;
(d
3), detecting containing jagged weft yarn whether during broken yarn, if the diffuse reflection type photoelectric sensor 3001 of weft yarn top detects one or more weft yarn signal, the broken yarn detection window of programmable computer controller 1001 all is judged as the signal that same weft yarn produces, and judge not broken yarn, if the diffuse reflection type photoelectric sensor 3001 of weft yarn top does not detect the weft yarn signal, the broken yarn detection window of programmable computer controller 1001 all judges the weft yarn broken yarn, and report to the police, the width of wherein hanging the yarn hook is greater than the width of weft yarn, adjacent weft yarn has certain spacing, the broken yarn detection window of programmable computer controller 1001 all is judged as the signal that same weft yarn produces when detection contains jagged weft yarn,
(d
4if) during programmable computer controller 1001 judgement weft yarn broken yarn, shut down and stop weft yarn broken yarn measuring ability.
In above-mentioned detection method, the value of Δ T is controlled at 0～P
rscope in, wherein Δ T be take value as 0.2P
rfor Best Times.
In above-mentioned detection method, the time P of weft position detected
rthe linear change along with the speed of main shaft rotation actual cycle Ti, but, biaxial warp knitting machine main shaft rotation period Ti changes greatly when start/stop, just owing to only having the time about one minute, therefore generally do not do detection, and, under stable operating mode, main shaft rotation period Ti is a stable value T
r, therefore, if programmable computer controller 1001 judges and obtains the theoretical value T of actual cycle Ti that the biaxial warp knitting machine main shaft rotates and the biaxial warp knitting machine main shaft rotation period of programmable computer controller 1001 settings
rbetween meet 0.8T
r≤ Ti≤1.2T
rduring scope, 1001 pairs of weft yarns of programmable computer controller carry out broken yarn judgement and processing; If programmable computer controller 1001 judges and obtains the theoretical value T of actual cycle Ti that the biaxial warp knitting machine main shaft rotates and the biaxial warp knitting machine main shaft rotation period of programmable computer controller 1001 settings
rbetween do not meet 0.8T
r≤ Ti≤1.2T
rduring scope, programmable computer controller 1001 adopts digital filtering to process detection signal, and weft yarn is not carried out to broken yarn judgement and processing.
Structure of the detecting device of the present invention is simple, and, without laying dust, reliability is high, and the detection method of detection weft yarn broken yarn of the present invention is simple, it is effective to detect, and accuracy is high.
Claims (3)
1. the Yarn break checkout gear of a biaxial warp knitting machine weft yarn, comprise programmable computer controller (1001) and input/go out module (2001), described programmable computer controller (1001) with input/go out module (2001) communication connection, it is characterized in that: also comprise diffuse reflection type photoelectric sensor (3001), described diffuse reflection type photoelectric sensor (3001) comprises infrared transmission module (3002) and infrared receiving module (3003), described infrared transmission module (3002) and infrared receiving module (3003) respectively with input/go out module (2001) communication connection, above the two ends of weft yarn, diffuse reflection type photoelectric sensor (3001) all is housed, the model of described diffuse reflection type photoelectric sensor (3001) is 1040-300-506.
2. the broken yarn detection method of a biaxial warp knitting machine weft yarn, is characterized in that: comprise the following steps:
A, biaxial warp knitting machine main shaft rotation period T is set on programmable computer controller (1001)
r=D/RI, wherein, D is two adjacent hook distances that are covered with the latitude hook of weft yarn, the rotating speed that R is the biaxial warp knitting machine main shaft, I are biaxial warp knitting machine main shaft and the speed reducing ratio that spreads the latitude chain, wherein T
raccording to the resulting theoretical value of formula;
B, arrange on programmable computer controller (1001) and hang yarn mode M, described extension yarn mode M hangs a yarn on each weft yarn hook, or on a weft yarn hook yarn of extension;
C, above the two ends of weft yarn, diffuse reflection type photoelectric sensor (3001) all is housed, the infrared transmission module (3002) of described diffuse reflection type photoelectric sensor (3001) is infrared radiation continuously, when the infrared ray that infrared transmission module (3002) gives off runs into yarn to the surrounding diffuse reflection, infrared receiving module (3003) receives infrared ray, send the signal that weft yarn detected, and signal is delivered to the position that programmable computer controller (1001) is judged weft yarn by inputting/go out module (2001);
D, programmable computer controller (1001) are judged whether broken yarn of weft yarn according to the position that weft yarn detected, and concrete steps are:
(d
1), set up the Mathematical Modeling of broken yarn detection window at programmable computer controller (1001), and the time P that weft position detected is set
r=MD/RI, the described time P that weft position detected
rat (P
r-Δ T)～(P
r+ Δ T), in scope, the error time of Δ T for allowing, if in the situation that do not detect weft yarn, programmable computer controller (1001) judgement weft yarn broken yarn, and warning in this time period;
(d
2), at the broken yarn detection window of programmable computer controller (1001), if the diffuse reflection type photoelectric sensor (3001) of weft yarn one end detects the weft yarn signal, and this signal is delivered to programmable computer controller (1001) by inputting/go out module (2001), and the diffuse reflection type photoelectric sensor (3001) of the weft yarn other end is at (P simultaneously
r-Δ T)～(P
r+ Δ T) the weft yarn signal detected equally in time, and this signal is delivered to programmable computer controller (1001) by inputting/go out module (2001), programmable computer controller (1001) judges not broken yarn of weft yarn, otherwise, if the diffuse reflection type photoelectric sensor (3001) of the weft yarn other end is at (P
r-Δ T)～(P
r+ Δ T) the weft yarn signal do not detected in time, programmable computer controller (1001) judgement weft yarn broken yarn, and warning;
At the broken yarn detection window of programmable computer controller (1001), if the time P of weft position detected
rat (P
r-Δ
t)～(P
r+ Δ T), outside scope, even programmable computer controller (1001) detects signal, programmable computer controller (1001) is not done any judgement and processing;
At the broken yarn detection window of programmable computer controller (1001), if at (P
r-Δ T)～(P
r+ Δ T) in time, the diffuse reflection type photoelectric sensor (3001) at the two ends of weft yarn does not all detect the weft yarn signal, programmable computer controller (1001) judgement weft yarn broken yarn, and warning;
(d
3), detecting containing jagged weft yarn whether during broken yarn, if the diffuse reflection type photoelectric sensor (3001) of weft yarn top detects one or more weft yarn signal, the broken yarn detection window of programmable computer controller (1001) all is judged as the signal that same weft yarn produces, and judge not broken yarn, if the diffuse reflection type photoelectric sensor (3001) of weft yarn top does not detect the weft yarn signal, the broken yarn detection window of programmable computer controller (1001) all judges the weft yarn broken yarn, and reports to the police;
(d4), if during programmable computer controller (1001) judgement weft yarn broken yarn, shut down and stop weft yarn broken yarn measuring ability.
3. the broken yarn detection method of biaxial warp knitting machine weft yarn according to claim 2 is characterized in that: if programmable computer controller (1001) judges and obtain the theoretical value T of actual cycle Ti that the biaxial warp knitting machine main shaft rotates and the biaxial warp knitting machine main shaft rotation period of programmable computer controller (1001) setting
rbetween meet 0.8T
r≤ Ti≤1.2T
rduring scope, programmable computer controller (1001) carries out broken yarn judgement and processing to weft yarn;
If programmable computer controller (1001) judges and obtains the theoretical value T of actual cycle Ti that the biaxial warp knitting machine main shaft rotates and the biaxial warp knitting machine main shaft rotation period of programmable computer controller (1001) setting
rbetween do not meet 0.8T
r≤ Ti≤1.2T
rduring scope, programmable computer controller (1001) does not carry out broken yarn judgement and processing to weft yarn.
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| CN 201010177090 CN101831758B (en) | 2010-05-20 | 2010-05-20 | Detection device and method of weft breakage of double-axis warp knitting machine |
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|---|---|---|---|
| CN 201010177090 CN101831758B (en) | 2010-05-20 | 2010-05-20 | Detection device and method of weft breakage of double-axis warp knitting machine |
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| CN101831758B true CN101831758B (en) | 2013-05-08 |
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| CN104765319B (en) * | 2013-01-29 | 2018-02-23 | 宁夏如意科技时尚产业有限公司 | A kind of control method for being used to reduce spinning frame spinning Yarn break |
| CN104375457B (en) * | 2013-01-29 | 2017-02-08 | 天津天纺生产力促进有限公司 | Control method and device for reducing spinning frame spinning yarn broken ends |
| CN103696104A (en) * | 2013-12-30 | 2014-04-02 | 苏州尤盛纺织有限公司 | Self-adaptive weft catching device |
| CN108060507A (en) * | 2018-01-25 | 2018-05-22 | 常州市新创智能科技有限公司 | Weft yarn needle needle-break detection device and its application method |
| CN114521819B (en) * | 2022-03-22 | 2023-04-07 | 江西艾芬达暖通科技股份有限公司 | Photoelectric sensing electric towel rack based on diffuse reflection principle |
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