CN211112494U - Needle selector state detection system - Google Patents
Needle selector state detection system Download PDFInfo
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- CN211112494U CN211112494U CN201921626665.8U CN201921626665U CN211112494U CN 211112494 U CN211112494 U CN 211112494U CN 201921626665 U CN201921626665 U CN 201921626665U CN 211112494 U CN211112494 U CN 211112494U
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- 238000010183 spectrum analysis Methods 0.000 claims description 2
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- 238000010009 beating Methods 0.000 abstract description 2
- 238000009940 knitting Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
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- 239000002699 waste material Substances 0.000 description 3
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Abstract
The utility model discloses a select needle ware state detecting system relates to and selects needle ware work to detect technical field. The utility model comprises an electronic needle selector, a vibration detector, a needle selector control system and a high-speed multi-path data acquisition analyzer; the vibration detection device collects vibration signals generated when the tool bit of the electronic needle selector collides with the baffle, converts the vibration signals into voltage signals and transmits the voltage signals to the high-speed multi-channel data acquisition analyzer. The utility model discloses a contrast experiment analysis frequency spectrum signal's peak value and the frequency distribution in the appointed time quantum, contrast impact force, voltage peak value and the fitting curve that corresponds the size of power of beating judge whether this vibration signal is unusual, judge whether electron selects needle ware operating condition to be normal, select needle ware operating condition's intellectual detection system to the electron, avoided the jacquard weave unusual and the emergence of the extravagant circumstances such as fabric.
Description
Technical Field
The utility model belongs to the technical field of select needle ware work to detect, especially, relate to a select needle ware state detecting system.
Background
The needle selector is used as an actuator for jacquard movement of a knitting machine, a tool bit of the needle selector is required to be at two stable positions of an upper limit position and a lower limit position in the processes of hooking yarns by knitting needles and the like, and the tool bit of the needle selector can reach the stable position within a few milliseconds by analyzing an action command when the tool bit of the needle selector acts.
At present, the existing knitting needle selector does not have the failure detection function on state keeping and position jumping, so that abnormal jacquard knitting is often caused, defects and defective products of knitted fabrics are scrapped, and mechanical faults are caused even by conditions of firing pins, broken needles and the like.
The needle selector state detection system is provided to solve the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a select needle ware state detecting system, gather the vibration signal that the electron selected the needle ware tool bit produced when colliding with the baffle and convert into corresponding voltage signal through vibration detection device, high-speed multichannel data acquisition analysis appearance is through handling voltage signal, the analysis, acquire and show the impact force, the signal spectrogram, according to the impact force, whether the electron selected needle ware operating condition is normal is judged to the signal spectrogram, it can't carry out the unusual detection of electron selected needle ware tool bit action to have solved current electron selected the needle ware during operation, lead to the jacquard weave unusual problem.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a select needle ware state detecting system, including the electron select needle ware, the electron select needle ware is piezoelectric ceramics select needle ware or electro-magnet select needle ware, still includes vibration detection device, selects needle ware control system, high-speed multichannel data acquisition analysis appearance, computer; the needle selector control system sends an action command to the electronic needle selector, and the electronic needle selector analyzes the command and executes corresponding action; the vibration detection device comprises a vibration measurement sensor and a signal conditioning circuit, and can also adopt other strain stress measurement sensors, collects vibration signals generated when the tool bit of the electronic needle selector collides with the baffle, converts the vibration signals into voltage signals and transmits the voltage signals to the high-speed multi-path data acquisition analyzer; the high-speed multi-channel data acquisition analyzer processes and analyzes the received voltage signal, acquires and displays an impact force and a signal spectrogram, judges whether the working state of the electronic needle selector is normal or not according to the impact force and the signal spectrogram, and directly displays the state of the electronic needle selector on a computer.
Further, the vibration measuring sensor can be adhered to the inner side surface and/or the outer side surface of the upper baffle and/or the lower baffle of the electronic needle selector according to requirements, and can also be arranged at a plurality of positions, and the length and the shape of the piezoelectric ceramic sensor can be arranged according to requirements, so that the work of the electronic needle selector is not influenced.
Furthermore, the vibration measuring sensor is a piezoelectric ceramic sensor, the piezoelectric ceramic sensor is adhered to the side, close to the tooth groove of the baffle, of the supporting surface of the baffle and is arranged in the middle of two fixed points of the baffle, the vibration detection device is sequentially provided with an electrode, a piezoelectric ceramic sheet, an electrode, an adhesive layer and a ceramic insulator from top to bottom, a tool bit of the electronic needle selector reciprocates to strike the impact baffle and does not directly and elastically contact with the vibration detection device, namely after the tool bit strikes the baffle, the baffle is subjected to transient impact force, the force is diffused to different directions in a very short time, and the baffle is connected with the vibration detection device through the adhesive layer, so the force is mainly transmitted to the surface of the vibration detection device in a shearing stress mode.
Further, the high-speed multi-channel data acquisition analyzer converts the voltage signal into impact force, performs spectrum analysis, analyzes the peak value of the spectrum signal and the frequency distribution in a specified time period through a comparison experiment, and compares the impact force, the voltage peak value and a fitting curve corresponding to the magnitude of the driving force to judge whether the vibration signal is abnormal, judges whether the state of the electronic needle selector is normal, directly displays the state of the electronic needle selector on a computer, intelligently detects the working state of the electronic needle selector, and avoids the occurrence of the conditions of abnormal jacquard weaving, fabric waste and the like.
Furthermore, the input end of the high-speed multi-channel data acquisition analyzer is connected with a signal wire led out by the vibration detection device, the output end of the high-speed multi-channel data acquisition analyzer is connected with a computer, a corresponding channel of the high-speed multi-channel data acquisition analyzer is opened to receive a voltage signal, sampling parameters and triggering parameters are set, and a time domain signal, a frequency domain signal and a self-power spectrum corresponding to the sampling parameters and the triggering parameters are tested.
The utility model discloses following beneficial effect has:
the utility model discloses a vibration signal that produces when vibration detection device gathers the electron and selects needle ware tool bit and baffle collision converts into corresponding voltage signal, peak value and the frequency distribution in the appointed time quantum through contrast experiment analysis spectrum signal, and the contrast impact force, whether this vibration signal is unusual is judged to the fitting curve of voltage peak value numerical value and the size that corresponds the power of beating, thereby judge whether electron selects needle ware operating condition to be normal, the intellectual detection system to electron selects needle ware operating condition has been realized, the emergence of the condition such as unusual and the fabric waste has been woven to the jacquard weave.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings 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 that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the installation of the vibration detecting device of the present invention;
FIG. 2 is a flow chart of the state detection of the needle selector of the present invention;
fig. 3 is a flow chart showing the judgment of the detection result of the needle selector state of the present invention.
1-upper baffle, 2-piezoelectric ceramic sensor, 3-needle selector tool bit, 4-lower baffle.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-3, the embodiment of the utility model discloses a select needle ware state detecting system, including the electronic select needle ware shown in fig. 1, still including vibration detection device, select needle ware control system, high-speed multichannel data acquisition analyzer, computer; the needle selector control system sends an action command to the electronic needle selector, and the electronic needle selector analyzes the command and executes corresponding action; the vibration detection device adopts a piezoelectric ceramic sensor 2, as shown in fig. 1, the piezoelectric ceramic sensor 2 is adhered to the outer side surface of an upper baffle plate 1 of the electronic needle selector, the piezoelectric ceramic sensor 2 is in a long strip shape, the length of the piezoelectric ceramic sensor 2 is from the first cutter head to the last cutter head of the electronic needle selector, when the electronic needle selector works, the cutter head 3 of the electronic needle selector is at the upper limit position or the lower limit position, and the position state is converted within a few milliseconds. When the electronic needle selector tool bit 3 is beaten, the electronic needle selector tool bit 3 elastically collides with the baffle, and impact force is dispersed from a collision point to two sides in a stress wave form in the collision process to generate a vibration signal. The vibration signal when the electronic needle selector bit 3 is normal is different from the vibration signal when the working state is abnormal, such as insufficient force of the needle selector bit 3, sticking of the needle selector bit 3, and the like, and the voltage signal generated by the piezoelectric ceramic sensor 2 is also different, so that whether the working state of the electronic needle selector is normal or not is judged by comparing the impact force and the voltage spectrum signal.
Preferably, the piezoceramic sensor 2 can be arranged at other positions of the electronic needle selector as required, such as the inner side or the outer side of the upper baffle 1 and the inner side or the outer side of the lower baffle 4, or at multiple positions, and the length and the shape of the piezoceramic sensor 2 can be arranged as required.
Preferably, the vibration detection device may also employ other strain stress measurement sensors.
Preferably, the piezoelectric ceramic sensor 2 collects a vibration signal generated when the tool bit 3 of the electronic needle selector collides with the baffle, converts the vibration signal into a voltage signal and transmits the voltage signal to the high-speed multi-channel data acquisition analyzer; specifically, after the piezoelectric ceramic sensor 2 and the baffle are bonded into an integral structure, the transient impact force generated when the tool bit 3 of the electronic needle selector collides with the baffle acts on the contact line of the cutter blocking tooth groove and is transmitted to the cutter blocking tooth groove through the cutter blocking tooth groove in the horizontal direction in the form of stress waves, stress waves are dispersed on a supporting plane of the baffle plate at the root part of the gullet through a dispersion effect, the tooth-shaped structure of the baffle plate enables the stress and the strain at the root part of the gullet of the cutter rail to be concentrated, therefore, in order to make the piezoelectric ceramic sensor 2 effectively measure, the piezoelectric ceramic sensor 2 needs to be pasted on the baffle supporting surface near the tooth groove side of the baffle when being arranged, and the sensor is arranged in the middle of two fixed points of the baffle, so that the sensing surface of the piezoelectric ceramic sensor 2 can be ensured to completely cover the transmission divergence surface of the stress wave of the baffle, and all effective detected signals are detected by the piezoelectric ceramic sensor 2.
Preferably, the input end of the high-speed multi-channel data acquisition analyzer is connected with a signal wire led out by the vibration detection device, the output end of the high-speed multi-channel data acquisition analyzer is connected with a computer, the high-speed multi-channel data acquisition analyzer adopts an ECON MI-70XX series high-end digital acquisition instrument, a corresponding channel of the high-speed multi-channel data acquisition analyzer is opened to receive a voltage signal, sampling parameters and triggering parameters are set, a time domain signal, a frequency domain signal and a self-power spectrum corresponding to the high-speed multi-channel data acquisition analyzer are tested, the driving frequency of the electronic needle selector is uniformly set to be 20HZ, a voltage stabilizing source is used for simulating the driving voltage produced by actual work, the voltage gradient range is set to be 0-200V, two variables of voltage U and the distance H; h takes 0.1mm as a scale, 41 scales are calibrated until the maximum swing amplitude of the tool bit of the needle selector still cannot contact the piezoelectric ceramic sensor, a voltage signal and a time-frequency signal or even a completely failure signal obtained by the high-speed multi-channel data acquisition analyzer in normal and abnormal states are obtained, the condition that the tool bit of the needle selector cannot hit the position in real conditions is simulated, a frequency spectrum signal of impact force and voltage when the tool bit is hit is displayed and compared with the obtained frequency spectrum signal in normal hitting, whether the needle selector fails or not is comprehensively judged by mainly comparing the impact force, the voltage peak value and the frequency of a peak value in a certain time, the failure of the needle selector is found and processed in time, the rejection of fabrics is avoided, the intelligent detection on the working state of the electronic needle selector is realized, and the occurrence of the conditions of abnormal jacquard weaving, fabric waste and the.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. A needle selector state detection system comprises an electronic needle selector and is characterized by also comprising a vibration detection device, a needle selector control system, a high-speed multi-channel data acquisition analyzer and a computer;
the needle selector control system sends an action command to the electronic needle selector, and the electronic needle selector analyzes the command and executes corresponding action;
the vibration detection device collects vibration signals generated when the tool bit of the electronic needle selector collides with the baffle, converts the vibration signals into voltage signals and transmits the voltage signals to the high-speed multi-channel data acquisition analyzer;
the high-speed multi-channel data acquisition analyzer processes and analyzes the received voltage signal, acquires and displays an impact force and a signal spectrogram, judges whether the working state of the electronic needle selector is normal or not according to the impact force and the signal spectrogram, and directly displays the state of the electronic needle selector on a computer.
2. The selector state detection system according to claim 1, wherein the vibration detection means includes a vibration sensor and a signal conditioning circuit, and the vibration sensor is bonded to an inner side surface and/or an outer side surface of the upper plate and/or the lower plate of the electronic selector.
3. The selector state detection system according to claim 2, wherein the vibration sensor is a piezo-ceramic sensor, and the piezo-ceramic sensor is attached to the baffle supporting surface on the side close to the notch of the baffle and in the middle between the two fixing points of the baffle.
4. The selector state detection system according to claim 1, wherein the electronic selector is a piezoelectric ceramic selector or an electromagnetic selector.
5. The selector state detection system according to claim 1, wherein the high-speed multi-channel data acquisition analyzer converts the voltage signal into an impact force, performs a spectrum analysis, analyzes a peak value of the spectrum signal and a frequency distribution in a specified time period through a comparison experiment, and judges whether the vibration signal is abnormal or not by comparing a fitted curve of the impact force, a voltage peak value and a magnitude corresponding to a driving force, determines whether the electronic selector state is normal or not, and directly displays the electronic selector state on a computer.
6. The selector state detection system according to claim 1, wherein an input end of the high-speed multi-path data acquisition analyzer is connected with a signal line led out from the vibration detection device, and an output end of the high-speed multi-path data acquisition analyzer is connected with a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626665.8U CN211112494U (en) | 2019-09-27 | 2019-09-27 | Needle selector state detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626665.8U CN211112494U (en) | 2019-09-27 | 2019-09-27 | Needle selector state detection system |
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| Publication Number | Publication Date |
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| CN211112494U true CN211112494U (en) | 2020-07-28 |
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| CN201921626665.8U Active CN211112494U (en) | 2019-09-27 | 2019-09-27 | Needle selector state detection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565259A (en) * | 2019-09-27 | 2019-12-13 | 浙江理工大学 | needle selector state detection system |
| CN116015432A (en) * | 2022-12-01 | 2023-04-25 | 高勘(广州)技术有限公司 | Optical cable monitoring method, device, equipment and storage medium based on light sensation and remote sensing |
-
2019
- 2019-09-27 CN CN201921626665.8U patent/CN211112494U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565259A (en) * | 2019-09-27 | 2019-12-13 | 浙江理工大学 | needle selector state detection system |
| CN116015432A (en) * | 2022-12-01 | 2023-04-25 | 高勘(广州)技术有限公司 | Optical cable monitoring method, device, equipment and storage medium based on light sensation and remote sensing |
| CN116015432B (en) * | 2022-12-01 | 2024-04-19 | 高勘(广州)技术有限公司 | Optical cable monitoring method, device, equipment and storage medium based on light sensation and remote sensing |
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