JP6931348B2 - A system that monitors the operating parameters of loom parts - Google Patents

Description

The present invention relates to a system for monitoring operating parameters of loom parts.

As is known, in the case of high cost machines such as looms, it is essential to operate continuously without interruption due to failure in order to make the investment worthwhile.

However, the repairs required to restore the loom's operation often result in a production outage period of a predetermined period, which varies depending on the extent of failure and the number of interventions.

Therefore, it is extremely important to intervene in the machine appropriately and perform regular maintenance or maintenance guided by the monitoring system before any damage or failure occurs. This method for maintenance is known as "predictive maintenance".

However, predicting failure or failure based on which intervention is made is a lesson from many cases: many machines, many operating times, and many archives of applications and operating conditions. Efficiently running a predictive maintenance system is extremely complex, as it can only be relied upon if it is based on.

An object of the present invention is to provide a reliable system for monitoring operating parameters of parts of a loom and appropriately detecting deviations in machine operation from normal optimum operation.

Such an object is achieved by a system made according to claim 1.

The features and advantages of the surveillance device according to the invention will be apparent from the description given below by non-limiting example, according to the accompanying drawings.

It is a figure which shows roughly some parts of the loom which applied the local monitoring system according to this invention. It is a figure which shows the air transport mechanism of a weft. It is a figure which shows the projectile transport mechanism of the weft. It is a figure which shows the pinching transfer mechanism of the weft. It is a figure which shows the support structure of a loom. It is a figure which shows the local monitoring system by one Embodiment of this invention. It is a figure which shows the comprehensive system by this invention.

The loom 1 is installed in the weaving factory 500. The term "woven fabric factory" means a factory where a process consisting of a sequence of actions required to convert a knitting yarn into a woven fabric occurs. Preferably, a plurality of looms 1 are installed in the weaving factory.

The loom 1 is connected to a rewinding roller 2 that holds a beam 4 made of a winding yarn of a knitting yarn that is supposed to form a warp 6 of a woven fabric 8, and a rewinding roller 2, and rotates the rewinding roller 2 according to an operation. The rewinding roller electric motor 10 to be in a state is provided.

The local monitoring system 400 according to the present invention preferably includes a temperature sensor 12 operably coupled to the rewind roller motor 10 to measure the temperature T10 of the motor and, in addition, to the rewind roller motor 10. Therefore, at least one state parameter such as the absorbed current value I10 can be used.

In addition, the rewind roller 2 is supported in a rotating state by the rewind roller bearing, and the local monitoring system 400 includes a temperature sensor 13 that detects the temperature T2 of the bearing.

The local monitoring system 400 further includes a load cell 15 that measures the tension S2 of the warp that is being rewound from the rewind roller 2.

In addition, the loom 1 is moved by a backrest roll 14 through which the warp 6 is passed so as to be appropriately deflected, a drop wire stop 16 for detecting the breakage of the warp, a shaft 18 provided with a hedle, and a bent portion 22. 20 is provided.

Downstream of the lead 20, the weft 50 is inserted in the lateral direction with respect to the forward direction of the warp 6, and is moved to produce the knitting of the woven fabric 8.

The bent portion 22 has a reciprocating rotary motion and is generally driven by a bending shaft by a conversion mechanism (eg, a connecting rod crank mechanism or a cam mechanism) suitable for converting the continuous rotary motion within the reciprocating rotary motion. NS.

The bent shaft is supported in a rotating state by the bent shaft bearing, and the local monitoring system 400 includes a temperature sensor 23 that detects the temperature T22 of the bearing.

In addition, the loom includes an electric bending drive shaft 37 operated by an electric current I37, and a temperature sensor 39 for measuring the temperature T37 of the motor.

In addition, preferably, the conversion mechanism is housed in an oil bath in the box, and the local monitoring system 400 includes a temperature sensor that measures the temperature T25 of the oil in the box.

The woven fabric 8 is pulled by a tension roller 24 arranged in a rotating state by an electric tension roller motor 26, and the electric tension roller motor 26 is coupled to a temperature sensor 28 that measures a temperature T26 to absorb a current that produces a current value I26. ..

In addition, the tension roller 24 is supported in a rotating state by pulling the roller bearing, and the local monitoring system 400 includes a temperature sensor 29 that detects the temperature T24 of the bearing.

In addition, the monitoring system includes a load cell 27 that measures the tension S24 of the fabric pulled by the tension cylinder 24.

The fabric 8 is finally wound on the beam 30 arranged on the take-up roller 32 by the plurality of return rollers, and the take-up roller 32 is arranged in a rotating state by the electric take-up roller motor 34. The motor 34 is coupled to a temperature sensor 36 that measures the temperature T34 and absorbs a current that produces a current value I34.

In addition, the take-up roller 32 is supported in a rotating state by the take-up roller bearing, and the local monitoring system 400 includes a temperature sensor 33 that detects the temperature T32 of the bearing.

In addition, the monitoring system includes a load cell 31 that measures the tension S32 of the woven fabric wound onto the take-up roller 32.

The loom 1 is further provided with a mechanism for transporting the weft threads for inserting the weft threads between the warp threads and for transporting the weft threads from one side of the machine to the other.

According to the first embodiment (FIG. 2), the weft transfer mechanism is an air jet.

According to this embodiment, the weft is conveyed from one side of the warp to the other by using a flow of compressed air in the lead 20 across a channel formed in the lateral direction.

Air is blown from both the main nozzle 39, which inserts the weft thread first wound around the reel 52, and a plurality of secondary nozzles 41, particularly called runners, which blow out according to a synchronized sequence and time.

Compressed air is supplied to the nozzles 39 and 41 via a solenoid valve connected to a tank of compressed air.

Preferably, the local monitoring system 400 includes a pressure transducer 40 coupled to the tank of compressed air and measures the pressure value p40 in the tank.

According to another embodiment, the weft transfer mechanism is a water jet.

According to this embodiment, the weft is transported by a high pressure water jet emitted by a nozzle.

According to yet another embodiment, the transport mechanism is called a "projector" (Fig. 3).

According to this embodiment, the weft thread 50 wound around the reel 52 is fastened to the projectile by a pinch arranged at the tail of the projectile 54.

The transfer mechanism further comprises a mechanical launch device 56 adapted to the torsion bar 58, which is suitable for releasing the mechanical potential energy stored in the torsion bar 58 towards the projectile 54, on the side of the reel 52. Fire it from to the other side of the machine and move it along the path formed from the positioning hook 60.

The torsion bar 58 fixed at one end is supported in a rotating state by a bar bearing, and the local monitoring system 400 includes a temperature sensor 62 that measures the temperature T58 of the bearing.

In addition, the torsion rod 58 is generally rotatably engaged with the rod load shaft by a toothed groove at the end opposite to the fixed end, and further moved in a rotating state, and the rod 58 is moved by a toggle and a cam mechanism. Twist.

The load shaft rod is supported in a rotating state by the load shaft bearing, and the local monitoring system 400 includes a temperature sensor 64 that measures the temperature T64 of the bearing.

In addition, the toggle and cam mechanism includes an oil damper, and the local monitoring system 400 includes a temperature sensor 66 that measures the temperature T66 of the oil damper.

The transport mechanism is further located on the other side of the machine and includes a braking device 62 that engages with and brakes the projectile, and a return mechanism such as a chain that returns the projectile 54 to the reel side.

According to yet another embodiment, the transport mechanism comprises a pinching mechanism (FIG. 4).

In the present embodiment, the weft 50 wound around the reel 52 is connected by the clamp of the first pinch 70 which is moved to the center of the loom 1 by the conveyor 72. The second pinch 74 coming from the opposite side is moved to the center of the loom by the second conveyor 76, the weft thread held by the first pinch 70 is taken and brought to the opposite side to complete the insertion.

The conveyors 72 and 76 are called dentarellas and are moved by the cog wheels 78 which are installed on the dentarella shaft and supported in a rotating state by the dentarella bearings. The local monitoring system 400 includes a temperature sensor 80 that measures the temperature T78 of the bearing.

According to the first variant of such an embodiment, the transport system is a negative pinch system, i.e., the passage of weft threads between the pinches is not actively controlled, but the second pinch penetrates with the first pinch. Then, remove the hook at the end of the weft from the first pinch.

According to another variant of such an embodiment, the transfer system is a "positive pinch" system, i.e., the passage of weft threads from the first pinch to the second pinch is done by controlling the opening and closing of the clamp. ..

The loom 1 further comprises a lubrication system with oil under pressure, including an oil pump, an oil tank and a distribution circuit for lubricating key components such as those described above.

The local monitoring system 400 includes a temperature sensor 90 that measures the temperature T90 of the lubricating oil.

Moreover, the local monitoring system 400 includes a pressure transducer 92 that measures the oil pressure value P92 in the oil distribution circuit.

According to a preferred embodiment of the present invention, the loom 1 includes a dobby that controls the rise of the shaft according to a predetermined pattern. The dobby is moved by a dobby shaft that is rotationally supported by a bearing. The local monitoring system 400 includes a temperature sensor 97 that measures the temperature T97 of the bearing.

In addition, the loom 1 includes an electric motor 81 that moves the dobby shaft. The local monitoring system 400 includes a temperature sensor 83 that measures the temperature T81 of the motor. The dobby motor 81 is driven by the current I81.

According to another embodiment, the loom 1 is of type Jacquard (mechanical or electronic). In the case of a mechanical jacquard loom, the loom 1 includes a plurality of hooks for operating a shaft that is moved by a jacquard shaft that is rotationally supported by a bearing. The local monitoring system 400 includes a temperature sensor 99 that measures the temperature T99 of the bearing.

In addition, the loom 1 includes an electric jacquard motor 85 that moves the jacquard shaft. The local monitoring system 400 includes a temperature sensor 87 that measures the temperature T85 of the motor. The jacquard motor 85 is driven by the current I85.

In addition, the loom 1 comprises a support structure 100 (FIG. 5), which is typically made of cast iron and generally comprises a pair of shoulders 102a, 102b suitable for supporting mechanical parts, with lateral gaps.

The local monitoring system 400 preferably includes a vibration sensor 104 that measures the vibration V100 of the support structure 100.

Finally, preferably, the local surveillance system 400, as a whole or as an engine thereof, includes image capturing means 110 such as a webcam for capturing the image W110 associated with the loom.

The loom 1 also comprises a local management device 120 for machine management, such as, for example, an electronic card, PLC or microprocessor, and by itself, for example, the speed of one or more engines, the power absorbed, and so on. Measure (and store, if possible) loom state data, such as the current absorbed by the motor and the temperature of a given engine.

The local monitoring system 400 further comprises a communication means 130 operated by, for example, wireless technology (Wi-Fi type) suitable for communication of measured parameter values and state parameters of the loom 1 outside the weaving factory.

Preferably, the local monitoring system 400 further comprises means of local storage 140, which stores communication means 130 and / or mechanical parts for storage of measurement parameters and / or state parameters. It is connected to the local management device 120.

Preferably, the local monitoring system 400 also comprises processing and local display means 150, eg, communication means 130, and / or mechanical parts that store measurement parameters, and / or local management devices 120 and / or. A computer connected to the means of the local storage 140 so as to be able to operate is provided, measurement parameters and state parameters are processed, and the processing results are displayed.

According to the present invention, the comprehensive monitoring system includes the local monitoring system 400 of each loom 1, the main means of the storage 660 for storing the measurement parameters and the state parameters of each loom 1, and the communication means 130 of the local monitoring system 400. It comprises a main communication means 670 that is operably connected, for example, composed of components for connecting to the Internet.

The main means of the storage 660 is arranged in the control room 700 away from the weaving factory 500.

Preferably, locally collected information and captureable images are communicated to the main means of storage 660, which are continuously separated in time (“real time” mode), as according to another embodiment. Information is communicated at a predetermined frequency, such as daily or weekly (batch mode), and according to yet another embodiment, such information is given, such as during machine downtime or in the case of approaching planned intervention. Communicated when an event occurs ("event-based" mode).

In addition, the comprehensive monitoring system includes processing means 680 such as a PC connected to the Internet and / or main storage means 660 so as to be operable, and processes information from each weaving factory 500.

Innovatively, the comprehensive monitoring system according to the present invention performs efficient maintenance in order to warn the operator of the deviation of the loom's function from the considered optimum reference function through a special calculation algorithm. to enable.

The comprehensive monitoring system can signal the need to perform preventive maintenance in particular, but it is a large amount of data (big data, ie, that comes from multiple machines in one or more textile factories). It is very extensive in terms of capacity, speed and versatility, and is intended to enable the collection, storage and analysis of (collections of data) that require specific techniques and analysis methods for value extraction.

Preferably, the system according to the invention also allows the collection and storage of large amounts of data over a very long period of time, thereby allowing the detection of variability or statistical phenomena, which are usually Is often a sign of failure or a gradual deterioration of operating conditions that is unrecognizable or indistinguishable.

According to another preferred embodiment, the system according to the invention has the ability to collect and store different parameters of the machine, for example identifying the interrelationships between them, such as speed, power consumption and temperature. .. In addition, the system can analyze the data collected in the frequency domain and identify periodic phenomena on a single parameter or as a result of the correlations described above.

Analyzing the correlation between the parameters identifies, for example, the trends of the general purpose parameters P1 and P2 as a function of another general purpose parameter X, and the correlation function Φ {P1, P2 (X) (X)} or the time t. It means to correlate them with each other through the tendency of the general-purpose parameter P1 as a function of.

On a single central system with an architecture thus identified and flexible, the ability to store large amounts of information and data (big data) and deploy processing, and historical trends in the operating parameters of the loom. Computational functions allow for progressive and continuous identification, expansion and evolution of correlation functions and prediction algorithms.

For example, the system according to the invention measures the vibration of the support structure of the loom with a vibration sensor, performs frequency domain analysis, and manifests and predetermines the loom outage (eg, due to breakage, technical problems, mechanical failure). It is possible to correlate the frequencies of. Therefore, it is possible to define which frequencies are associated with the operational problem and plan predictive maintenance operations.

Preferably, in addition, the operation and state parameters of the loom in the absence of the fabric being manufactured are measured, the state of idle operation is defined, the idle operation at a given moment is compared with the idle operation in the reference state, and the variation is observed. Can be detected.

In addition, preferably, the surveillance system according to the invention provides an online support device with remote detection of anomalous behavior, quantity variation or any other anomaly.

According to another preferred embodiment, the surveillance system according to the invention can remotely update the machine management software and does not require local intervention.

It will be apparent that one of ordinary skill in the art can modify the above surveillance system to meet the accompanying requirements while remaining within the scope of the appended claims.

Claims (10)

A method for identifying a failure or deterioration of the operation of the loom (1).
A local monitoring system (400) applied to at least one loom (1) and the loom (1) to collect operation parameters indicating the operation of parts of the loom and state parameters of the loom, and the operation. A step of providing the parameters and a communication means (130) for communicating the state parameters in the loom factory (500), and
A step of providing a main communication means (670) operably connected to the communication means (130) of the local monitoring system (400), and
A main that is remotely located to the weaving factory (500), operably connected to the main communication means (670), and suitable for storing parameters of a large-capacity local monitoring system (400). Steps to provide storage means (660) and
Operablely connected to the main communication means (670) and / or the main storage means (660) located remotely to the weaving factory (500) for processing large capacity parameters. Steps to provide a suitable main processing means (680), and
Identify trends in general-purpose parameters (P1, P2) based on another general-purpose parameter (X), convert the trends into frequency domains, correlate them with each other using a correlation function, and create a huge amount of data. Based on the step of identifying the variation in the operation of the loom (1) from the reference operation,
The state parameter of the loom when there is no woven fabric being manufactured is measured, the state of idle operation is defined as a reference operation, and the reference operation of the idle operation is compared with the idle operation at a predetermined moment to make a variation. With steps to identify
The state parameter of the loom is one or more parameters selected from the group consisting of the speed of one or more engines, the power absorbed, the current absorbed by the motor, and the temperature of one or more engines. A method characterized by that. The vibration sensor measures the vibration of the support structure of the weaving machine, which is one of the operation parameters, analyzes the vibration in the frequency domain, correlates the predetermined frequency with the occurrence of the stop of the weaving machine, and performs the predicted maintenance operation. The method of claim 1 to plan. A method for identifying a failure or deterioration of the operation of the loom (1).
At least one loom (1) per factory, and a local monitoring system (400) applied to the loom (1) to collect operating parameters indicating the operation of parts of the loom and state parameters of the loom. A step of providing the operation parameter and the communication means (130) for communicating the state parameter in a plurality of looms (500), and
A step of providing a main communication means (670) operably connected to the communication means (130) of the local monitoring system (400), and
A main that is remotely located to the weaving factory (500), operably connected to the main communication means (670), and suitable for storing parameters of a large-capacity local monitoring system (400). Steps to provide storage means (660) and
Operablely connected to the main communication means (670) and / or the main storage means (660) located remotely to the weaving factory (500) for processing large capacity parameters. Steps to provide a suitable main processing means (680), and
The tendency of the general-purpose parameters (P1, P2) of each loom (1) is identified based on another general-purpose parameter (X), the tendency is converted into a frequency domain, and they are correlated with each other using a correlation function. A step of identifying the deviation of the operation of the loom (1) from the reference operation based on a huge amount of data, and
The state parameter of the loom when there is no woven fabric being manufactured is measured, the state of idle operation is defined as a reference operation, and the reference operation of the idle operation is compared with the idle operation at a predetermined moment to make a variation. and a step of identifying,
The state parameter of the loom is one or more parameters selected from the group consisting of the speed of one or more engines, the power absorbed, the current absorbed by the motor, and the temperature of one or more engines. A method characterized by that. A comprehensive monitoring system for looms
A local management device (120) that is located in the loom factory (500) and is associated with each loom (1) and provides a sensor for measuring operating parameters of parts of the loom and a state parameter of the loom (1). ), And at least one local monitoring system (400) including the operation parameter and the communication means (130) for the state parameter.
A main communication means (670) connected to the communication means (130) of the local monitoring system (400) so as to be operable, and
A main storage that is remotely located to the weaving factory (500), is operably connected to the main communication means (670), and is suitable for storing parameters of a large-capacity local monitoring system (400). Means ( 660 ) and
Connected operably to the main communication means (670) and / or the main storage means (660) located remotely to the loom factory (500) for processing large capacity parameters. Suitable, equipped with a main processing means (680) for identifying the deviation of the operation of the loom (1) from the reference operation.
The reference operation is a state of idle operation of the loom obtained by measuring the state parameter of the loom in the absence of the woven fabric being manufactured, and the main processing means (680) identifies the variation. Therefore, it is suitable for comparing the reference operation of the idle operation with the idle operation at a predetermined moment.
The state parameter of the loom is one or more parameters selected from the group consisting of the speed of one or more engines, the power absorbed, the current absorbed by the motor, and the temperature of one or more engines. Characterized by that
system. The comprehensive monitoring system according to claim 4, wherein the main communication means (670) includes a component for connecting to the Internet. The local control device (120) comprises at least one temperature sensor (12, 39, 28, 36, 83, 87) and the temperature of an electric motor (10, 37, 26, 34, 81, 85), or said. The comprehensive monitoring system according to claim 4 or 5, which measures the temperature of a support bearing of a rotating engine of a loom, or the temperature of a lubricating oil. The comprehensive monitoring system according to claim 4 or 5, wherein the sensor comprises at least one pressure transducer and measures pressure in a pressure plenum or in a pressurized oil distribution circuit. The sensor comprises at least one load cell (15, 27, 31) and is the tension of the warp threads (S2) unwound from the rewind roller (2) or the tension of the fabric pulled by the tension roller (24). (S24), or the comprehensive monitoring system according to any one of claims 4 to 7, which measures the tension (S32) of the woven fabric wound around the take-up roller (32). The comprehensive monitoring according to any one of claims 4 to 8, wherein the sensor includes at least one vibration sensor (104) and measures the vibration (V100) of the support structure (100) of the loom (1). system. The comprehensive monitoring system according to any one of claims 4 to 9, further comprising an image capturing means (110) and capturing an image (W110) related to the loom (1) as a whole or as an engine thereof.

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