EP1384799A1 - Device and procedure for controlling and consulting the operating parameters of textile machines - Google Patents

Abstract

The system to control the operation of a textile machine, and monitor the working parameters, is for a machine assembly with a number of electromotors (A), motor controls (B), monitors (C), actuators (D), and at least one central programmable control unit (E). An electronic circuit forms a local area network bus linking the components to the control. At least one interface gives a link to a information system (F,F',J,N) which incorporates a monitor screen and a keyboard., and which can be accessed through the Internet.

Description

The present invention relates to the field of machines textiles, in particular motor control devices, sensors and the actuators of these machines and relates to a control device and consultation of the operating parameters of such textile machines.

The subject of the invention is also a method implemented by this device.

Currently textile machines, such as carding, combing, cracking, converting, reducing heads carding, spinning preparation and spinning machines, Gills chains, screw gills, wipers, spindle benches, continuous spinning machines and guiper have several electric motors, including each are linked individually to a PLC programmable from the machine via cables. So is even with regard to machine sensors or groups of sensors, such as, for example, position, speed detectors and safety contactors, as well as machine actuators, such as solenoid valves of the cylinders, for example, which are each connected individually to the PLC via cables individual. This type of wiring is expensive and the assembly time is say the placement of the cables, their connections and the verification of the wiring, is very long and very expensive.

Given the large number of these cables and connections, the risk of machine failure and possible breakdowns be the consequence of a bad connection or a damaged cable are also multiplied. In addition, the type of communication existing today between engine control devices, such as, for example, frequency converters and a programmable controller, do not not allow to freely and fully consult their parameters or modify them.

Among the textile machines, it will be more particularly taken into account consider, for example, straight combers, which are textile machines responsible for cleaning the ribbons of textile fibers, so removing impurities such as, for example, straws, thistles, tangles of fibers, buttons and bundles, as well as a small amount fibers that are too short, which could be detrimental to the proper functioning of spinning machines and the quality of the yarns to be produced.

To this end, it is well known that the combing cycle modern rectilinear combing machines, which are derived from models from the ^mid-19th century, can be decomposed into two phases, the first of which is called combing the fiber heads and the second of combing tails of fibers.

The combing phase of the fiber heads occurs when the pliers are closed, while the combing phase of the fiber tails intervenes at the time of uprooting, when the gripper is open. The sentence combing the fiber heads is done by needles or teeth arranged on the periphery of a rotating cylinder, commonly called a comb circular, while the combing phase of the fiber tails is carried out by a comb, commonly called a fixed or straight comb.

A good textile result, i.e. a combed ribbon of high quality free from defects, and satisfactory machine operation, i.e. a very large production and a lower rate of gowns and duvets possible, require optimizing the settings of the straight combing machine.

Currently, most settings for straight combers are of the discontinuous type and are produced during the stopping of the machine. The power value, for example, which directly conditions the production of the machine and the quality of the combed tape, expressed in mm / cycle, and is defined by the number of teeth of the feed ratchet which rotates the group of food cylinders. Also, to settle a different power value, stop the machine and less, to change the ratchet. The speed of rotation of circular combs having a packed segment and a smooth unpopulated segment is currently directly proportional to the general speed of the combing machine, is not adjustable and, generally, the speed of rotation of this type of comb circular is gradually accelerated and then slowed down by means of torques offset gears.

Circular combs, the entire periphery of which is trimmed needles or teeth, also have a rotational speed directly proportional to the general speed of the combing machine. This speed of rotation, which directly conditions the cleanliness of the combed tape, wear of the needles or teeth of the comb and also the degree of soiling of the circular comb itself, cannot currently be changed only by changing gears. The same applies to the recovery value on the tear-off sleeve, which depends on a exchange gear ratio which must be replaced to modify the value, when the machine is stopped. This recovery value conditions the title, cohesion and regularity of the combed ribbon.

The tension of the combed tape between the tear-off sleeve and the entry of the curling box is currently adjustable via a pulley variable speed drive operated remotely using a transmission mechanical with universal joint and chains, this adjustment must be carried out so very precise while the machine is running, the operator being located near the outlet, in order to observe the effect of its adjustment on the combed tape. This mechanical device is of complex and expensive construction and the value of the tension of the combed tape is currently constant inside a combing cycle. All of these settings must be made systematically at each change of batch of material, so that optimize the production of the combing machine and the textile quality of the combed tape.

In addition, the combing and repainting assortments are composed of several passages of drawing machines, such as gills, and several combing machines working in groups of three to twelve machines, all of which must be paid for individually at each batch change of matter. This adjustment operation is long and repetitive.

It is known, for example, from DE-A-43 12 041 and WO-A-95/27817 replace cascades of exchange gables or variators mechanical speed by electric motors controlled by devices frequency control. However, according to the teaching disclosed by these documents, each engine control device electric is connected by at least one individual cable to a PLC programmable and the risk of breakdowns due to a connection fault or deterioration of a cable remains high. In addition, with this type of wiring, the type of communication existing between the control devices motors and the programmable logic controller currently does not allow freely and fully consult their operating parameters, or to edit. Thus, in the current state of the art, it is impossible to control remotely or consult all parameters of walking of a straight combing machine.

The object of the present invention is to overcome these drawbacks by proposing a device and a method for piloting and consulting textile machine operating parameters.

To this end, the steering and consultation system for operating parameters of textile machines, in particular carding, combing, cracking, conversion, preparation for spinning and spinning, comprising electric motors, control of electric motors, sensors, actuators and least one programmable central unit is characterized in that it is essentially constituted by an electronic circuit forming a local network internal to the machine such as a "field bus" and connecting the control of motors, sensors and actuators at the central unit programmable and by at least one machine control interface connected to said electronic circuit and formed by a computer device comprising a display screen and a control keyboard.

This device implements a control and consultation of the operating parameters of textile machines characterized by which essentially consists in connecting the control devices of the motors, sensors and actuators to a programmable central unit and at least one machine control interface formed by a computer device by means of an electronic circuit forming a local machine internal network such as a "field bus", this interface control comprising a display screen and a control keyboard, to control the machine and consult the machine operating parameters using the command interface and analyzing the data using of said interface.

Among the advantages that flow directly from this invention we will cite the possibility of consulting the operating parameters of the textile machine and control it remotely, either by wire connection or by radio link, and possibly using preset recipes, in the aim, for example, to modify its walking parameters remotely or in the purpose of determining the reasons for a failure and of intervening, in order to remove. You can also download to an external computer at machine, all the operating parameters of the textile machine, in order to be able to use them using data processing software, for the purpose, for example, of creating new recipes or making statistical calculations.

The operating parameters of the textile machine, such as example the value of the machine settings, can indeed be stored in a recipe, which depends on the batch of material to be worked. Thus, when the textile machine considered is a straight combing machine and when the same or a similar batch of material is to be combed several times and at different times, we can recall the recipe for setting corresponding to this batch of material and, in this case, the combing machine will automatically adjust the parameters corresponding to this recipe. Among these settings, more particularly, the settings of feeding, speeds of the circular comb and the cylindrical brush, the value of the overlap and the output voltage between the sleeve and the rollers of the curling box. Other walking parameters additional can obviously be taken into account, as by example the general speed of the machine, the type of filling of the combs, the number of doubling, the food load, the value of spacing etc.

Thanks to the invention it also becomes possible to download remote updates of algorithms and software versions.

The interest of the invention becomes evident when the machines of a complete line of textile machines including cards, heads card reducers, gills and several combers are to be settled individually, especially when they are in battery of twelve machines, for example, and it becomes possible to adjust them all simultaneously and remotely.

When several combers are placed in a battery, it becomes also possible to set for each of them values of different settings, in order to optimize the walking and the textile quality of combed ribbons.

la figure 1 est un schéma par blocs représentant le dispositif conforme à l'invention, et

la figure 2 est une vue en élévation latérale d'une peigneuse mettant en oeuvre le dispositif selon la figure 1.

The invention will be better understood from the following description, which relates to a preferred embodiment, given by way of nonlimiting example, and explained with reference to the appended schematic drawings, in which:

FIG. 1 is a block diagram representing the device according to the invention, and

FIG. 2 is a side elevation view of a combing machine implementing the device according to FIG. 1.

Figure 1 of the accompanying drawings shows a textile machine carding, combing, cracking, converting, preparation for spinning and spinning, in particular a carding machine, a carding reducing head, a combing machine, a cracker, a converter, a chain Gills, a Gills with screw, a wiper, a bench with spindles, a continuous spinning machine or a guiper, comprising electric motors A, devices B control of electric motors, sensors C, actuators D and at minus a programmable central unit E, this machine being provided with a device for monitoring and consulting the operating parameters.

In accordance with the invention, this device for controlling and consultation of the operating parameters is essentially constituted by a electronic circuit G forming a local network internal to the machine such as "field bus" and connecting the devices B for controlling the motors A, the sensors C and actuators D at the programmable central unit E and by at minus a machine control interface connected to said circuit electronic G and formed by a computer device F, F ', J, N comprising a display screen and a control keyboard.

According to a characteristic of the invention, the central unit programmable E is advantageously provided with at least one means of connection to at least one programmable central unit of at least one other textile machine through at least one local inter-machine network H and at least one computer device F, F ', J, N. Thus, it is possible to consult and modify the operating parameters of one or several machines, in particular by means of a central computer J. It is also possible to realize the programmable central unit E in the form a programmable logic controller or a computer.

In accordance with another characteristic of the invention, and as shown in Figure 1 of the accompanying drawings, the central unit programmable E can also be linked, directly or by through the local inter-machine network H, to a network of external communication K, such as INTERNET, for connection to a remote computer N. Such a connection to a remote computer N allows to consult and modify the walking parameters of the machine.

According to another characteristic of the invention, the device computer system forming the command interface consists of a radio transceiver L connected to the programmable central unit E of the machine or to the inter-machine local network H and by a transceiver radio M connected to a portable terminal F '. Such an embodiment allows communication with one or more remote machines without link Wired. Furthermore, in such a case, the command interface is advantageously portable and can therefore be moved freely around machines. Thus the operator on the machine is free to place himself on the spot more adequate around the machine, without being congested by a link wired, in order to see firsthand the effect of the adjustments that it controls at the textile machine.

Figure 1 of the accompanying drawings shows an example of realization of an electronic circuit G forming a local network internal to a machine, in which the electric motors A1, A2, ... Au of a first textile machine are controlled by motor control devices B1, B2, ... Bu. These motor control devices are themselves linked together by the internal local network G. This internal local network G is constituted by a connection cable, such as a field bus which allows the moving computer data along said cable in such a way that each engine control device B1, B2, ... Bu, receives each data transmission at the same time. C sensors or groups of sensors which are, for example, position or position detectors speed and safety contactors, as well as the actuators of the machine, such as the solenoid valves of the cylinders, for example, are, each, connected to this local network G internal to the machine.

The programmable central unit E, which can either be a PLC programmable, i.e. a computer, is also connected to the local network G internal to the machine. Thanks to the internal local network G, the central unit programmable E is able to consult and modify the parameters of operation of engine control devices B, sensors C and actuators D and control the machine. IT devices F, F ', J, N forming the control interfaces of the machine are man-machine connection terminals, consisting of a display screen, by operating buttons and by a processor and allow the operator on the machine, the trimmer, a control agent or a convenience store to consult and modify the operating parameters of the machine.

According to a characteristic of the invention, not shown in attached drawings, machine operating parameters, for insertion data in the programmable central unit E by means of the devices computer systems F, F ', J, N forming the control interfaces, are advantageously displayed on tables or charts specific to lots of material to be treated and collected in a corresponding compartment of the textile machine and / or in a remote archiving medium that can be viewed by the operators.

Machine operating parameters can be viewed by a computer J, N and analyzed by data processing software, for statistical purposes. In addition, the computing devices F, F ', J, N forming the command interfaces make it possible to diagnose the working condition of the textile machine. Indeed, all of machine parameters can be viewed and changed by any of the computing devices, whether it's an F control panel located on the machine, or a computer J placed, for example, in the office of the control. In the latter case, it is possible to download the operating parameters of a machine simultaneously on several machines textiles. Similarly, with a remote computer N located, for example, in the after-sales service office of the machine manufacturer, the latter can remotely diagnose a type of failure encountered, or even, possibly download new walking parameters remotely, in order to update the textile machine program. Finally, a terminal portable F 'without wire connection can facilitate the work of the adjuster of the textile machine.

For a good understanding of the invention, the description which follows will refer only, but not limitatively, to combing machines rectilinear, knowing that an exploitation of the same type can be made for each of the textile machines which are the subject of the invention. So, for example, in combing wool, all textile machines, i.e. carders, card reducing heads, the three Gills with chains or screws, which precede a battery of several straight combers, themselves followed by the empty-pot and finishers passages, which are usually also Gills with chains or screws, can be the subject of the present invention.

Figure 2 of the accompanying drawings shows a textile machine according to the invention. This textile machine, commonly called straight and schematic combing machine in the uprooting phase, includes a feed device, tear-off device, fiber head cleaning and a tail cleaning device fibers.

The feeding device consists of a rack 1 equipped with call cylinders 2, by a group of food cylinders 3a and 3b, by a food comb 4, which is associated with a food grid 5, by a clamp 6 formed by an upper jaw 7 cooperating with a lower jaw 8 and by a plate between clamp 9. The textile material under form of ribbons is unwound from reels 10a, 10b, 10c ... or unwound from pots (not shown) by the call cylinders 2, then driven by the food cylinders 3a and 3b. The textile material then passes between the food comb 4 and the food grid 5, which are movable, such so that they can be separated from each other and that they can be moved together, either in the direction of movement of the textile material, either in the opposite direction of the movement of the textile material. In the occurrence, during a machine cycle, the food cylinders 3a and 3b and the call cylinders 2 of the rack are in rotation, in order to move the textile material in the direction of the food comb 4 and, simultaneously, the comb 4 moves away from grid 5, then comb 4 and grid 5 move back together, the comb 4 is then brought closer to the grid 5 and the needles of the comb 4 pass through the textile material. Then, the food comb being fully lowered, this assembly thus formed advances by training with him the textile material, so as to present the fiber heads 11 (not shown) to the fiber head cleaning device and to proceed with feeding a new bang of fibers.

The clamp 6 then closes and the lower jaw 8, which is articulated to the frame 12 of the machine, is lowered so as to approach of the fiber head cleaning device. The upper jaw 7, which is also hinged to the machine frame, is lowered, in order to move closer to the lower jaw 8, until it comes into contact with it to pinch the fibers located between the two jaws 7 and 8 and to retain, then the upper jaw 7 continues its movement towards of the fiber head cleaning device and brings with it the lower jaw 8. This displacement of the lower jaw towards the circular comb 13 is carried out gradually.

The distance traveled by the food comb 4 and the grid food 5, when they carry with them the textile material, is called food. The value of the power supply is expressed in mm / cycle of machine. So for example, when the power is set to 5.8 mm / cycle, this means that at each cycle of the machine the material to comb 5.8 mm advance. Currently, to change this value machine, the machine must be stopped in order to change the ratchet located on the end of the food cylinder control shaft. Many ratchets, the number of teeth of which differs from 11 to 21 teeth, are currently available. Such an adjustment device does not allow, however, to choose that discrete supply values and is therefore discontinuous.

Thus, in accordance with the invention, the computer devices F, F ', J, N forming the command interfaces allow to consult and modify the feed value, which is expressed in mm / combing cycle, by means of the local network G internal to the machine. These consultation and change the power value can be done so continues, without necessarily having to stop the machine. To this end, a A2 electric motor, possibly fitted with a mechanical reduction gear speed, the speed of which is freely adjustable independently of the speed the machine, but is controlled by the speed of the main motor A1 of the machine, rotates the food cylinders 3a and 3b of the combing machine and the call cylinders 2 of the rack 1. The electric motor A2 is controlled by the control device B2, which can be, for example, a frequency converter, itself connected using the local G internal network to the machine to the programmable central unit E, which can be an automaton or a computer.

Thus, it becomes possible to adjust very precisely and during machine running, using a computer device F, F ', J, N forming a control interface, an exact power value, in order to best adjust the production and quality parameters of the comber. The setting of the power value, which is expressed in mm / cycle, obtained by manipulating the control panel (F, F ', J, N), either by directly displaying the desired power value, or by actuating buttons + or - intended respectively to increase and to decrease this power value.

According to a characteristic of the invention, the central unit programmable E is advantageously provided with a connection for a additional control button P for direct actuation of a motor electric motor A2 for rotating the food cylinders 3a and 3b of the combing machine and the call cylinders 2 of the rack 1. Thus, it is possible to intervene directly on food, for example to reduce temporarily supply value. It follows that the conditions of work when threading the comber can be improved. Indeed, by pressing the additional control button P located on the machine, may voluntarily and temporarily decrease the feed value, or even stop the power supply, so as to reduce the load supplied and tapering the fringe of fibers to comb. This tapering operation of the bangs are currently carried out manually by the operator, who blocks the rotation of the upper food cylinder by hand necessary for tapering the bangs.

In accordance with another characteristic of the invention, the device can be supplemented by an incoming mass irregularity sensor (not shown), located upstream of the food cylinders 3a and 3b. Such sensor temporarily reduces the power value. So thanks to the invention, during the reattachment of ribbons, the sensor detects the presence of a point irregularity of the incoming mass, which can, for example, be in the form of a load overload food, and automatically and temporarily reduces the value supply in order to facilitate the passage of the material and to avoid any walking incident.

The power value can be stored as a parameter of machine running on batch-specific tables or charts of material to be processed or in a remote archiving medium that can be viewed by the operators. So when the same lot, or a similar lot of material must be combed repeatedly and at different times we can recall the operating parameters corresponding to this batch of material and, in in this case, the combing machine will automatically adjust the feed value corresponding to these parameters. The advantage of such an adjustment device becomes obvious when several combers are to be adjusted individually, in particular when they are in the battery of twelve machines, for example, and that it becomes possible to adjust them all simultaneously and remotely.

As a variant, the speed of rotation of the food cylinders 3a and 3b can be periodically accelerated and then slowed down. So the cylinders 3a and 3b are rotated while the food comb 4 and the food grid 5 move the textile material towards the pliers 6, then they are stopped during the combing phase of the heads of fibers. The rotational speed of the food cylinders 3a and 3b is freely programmable.

After the feeding phase begins the combing phase fiber heads. It is carried out by the head cleaning device of fibers, which is constituted by a circular comb 13, mounted on a shaft support 14, the arrangement of which is fixed relative to the frame 12 of the machine. This cleaning device further comprises a brush cylindrical 15 furnished with bristles, a doffer 16 furnished with metal spikes and a beating comb 17. During their rotation, the needles or the teeth 18 of the circular comb 13 penetrate the fiber heads 11 presented by the clamp 6 and remove the short fibers and the impurities. The brush cylindrical 15, the bristles of which penetrate between the needles or the teeth 18 of the circular comb 13, rotates faster than said circular comb 13, but in opposite direction, so as to remove short fibers and impurities transported by the needles or the teeth 18 of the circular comb 13 and of way to keep it clean.

The doffer 16 rotates more slowly than the cylindrical brush 15 and in the opposite direction of said cylindrical brush 15 and its points are flush with the bristles therefrom and discharge said bristles from said brush cylindrical 15 short fibers and impurities transported by the brush. The beating comb 17 of the fiber head cleaning device is a blade which is set in oscillation near the tips of the doffer 16, this blade being responsible for ridding the tips of doffer 16 of short fibers and the impurities they carry. Short fibers and impurities constitute the blister, which is recovered by gravity and / or by aspiration in view of its evacuation.

Currently, given the kinematic chain drive, the rotational speeds of the circular comb 13 and the cylindrical brush 15 are directly proportional to that of the machine and are not adjustable.

According to the present invention, the control interface of the machine formed by a computer device F, F ', J, N makes it possible to consult and modify the speed of rotation of the circular comb 13, at by means of the electronic circuit G forming a local network internal to the machine. This interface allows you to consult and modify the speed of rotation of the circular comb 13 continuously without necessarily having to stop the machine. For this purpose, an electric motor A3, whose speed is freely adjustable independently of the running speed of the machine, but is slaved to the speed of the main engine A1 of the machine, drives in rotation the shaft 14 for supporting the circular comb 13. The motor electric A3 is controlled by the control device B3, which can be, by example, a frequency converter, itself connected, using the circuit electronic G, to the programmable central unit E, which can be a PLC or computer. So it becomes possible to adjust very precisely, and while the machine is running, using a device IT F, F ', J, N, a speed of rotation of the circular comb 13, in order to best adjust the production and quality parameters of the combing machine and, in particular when the circular comb 13 is trimmed over all its periphery of needles or teeth, to choose the offset value of the most appropriate origin of the combing of the fiber heads.

Adjusting the speed of rotation of the circular comb 13 is obtained by manipulating the IT device F, F ', J, N, or directly displaying the desired value, either by pressing the + buttons or - intended respectively to increase and decrease this speed. grace according to the invention, the speed of rotation of the circular comb 13 is easily modifiable which optimizes its cleaning capacity of the heads of fiber 11 and reduce wear.

In addition, as the speed of rotation of the circular comb can be stored in a remote archiving medium that can be viewed by operators, depending on the batch of material to be worked, when the same batch, or a similar batch of material should be combed repeatedly and at different times, you can recall the setting parameters corresponding to this batch of material and in this case, the combing machine will adjust automatically the rotation speed of the circular comb corresponding to these settings. The interest of such an adjustment device becomes obvious when several combers are to be adjusted individually, in particular when they are in the battery of twelve machines, for example, and it it becomes possible to adjust them all simultaneously and remotely.

Likewise, the invention makes it possible to consult and modify continuously the speed of rotation of the cylindrical brush 15. In such a In this case, the machine does not necessarily have to be stopped. To this end, a A4 electric motor, the speed of which is freely adjustable regardless of the running speed of the machine, but is subject to the speed of the main motor A1 of said machine, rotates the cylindrical brush 15. The A4 electric motor is controlled by the command B4, which can be, for example, a frequency converter, even connected, using the local network internal to machine G to the central unit programmable E, which can be a PLC or a computer. So, he becomes possible to adjust very precisely, and while the machine, using a computer device F, F ', J, N, a speed of rotation of the cylindrical brush 15, so as to optimize its capacity for cleaning the circular comb 13 and reducing its wear.

The adjustment of the speed of rotation of the cylindrical brush 15, is carried out, via the IT device F, F ', J, N, or in directly displaying the desired value, either by pressing the + buttons or - intended respectively to increase and decrease this speed. So, the speed of rotation of the cylindrical brush 15 is easily modifiable.

This speed of rotation of the cylindrical brush 15 can also be stored in a remote archiving medium searchable by operators, depending on the batch of material to be worked. Thus, it is possible to recall parameters specific to batches of material to be treated.

According to another characteristic of the invention, not shown in the appended drawings, the device can be completed by a device for detection of the degree of fouling of the circular comb 13 cooperating with servo-control of the speed of rotation of the cylindrical brush 15 and associated with an automatic advance device for the cylindrical brush 15, intended to compensate for the wear of the cylindrical brush. So when the device for detecting the degree of fouling of the circular comb 13 finds that the latter is dirty, a setpoint is transmitted to the engine electric of the cylindrical brush 15, in order to accelerate its speed of rotation until the device for detecting the degree of fouling of the comb circular 13 finds that the circular comb 13 is again clean. AT default it is a PLC which manages the speed setpoints of the engine of the cylindrical brush 15 and which periodically increases and reduces its speed to maintain the cleanliness of the circular comb 13.

Preferably, the automatic brush advance device cylindrical 15, associated with this new brush control device cylindrical 15, is as described in FR-A-2 651 512 in the name of the Applicant. Periodically and for a short period, this device automatic increases the interpenetration value of the brush bristles cylindrical 15 with the teeth of the circular comb 13, so that the needles or the teeth of the circular comb 13 are thoroughly cleaned. AT after this deep cleaning period, the device automatic reduces the interpenetration value, so that the brush cylindrical 15 regains the position it had before said period of deep cleaning. Thus, the wear of the bristles of the cylindrical brush 15 is reduced and its lifespan is extended.

The textile material is then moved by the device to be brought into contact with the lifting device and with the fiber tail cleaning device, this device realizing the stripping and cleaning phases of the fiber tails.

The lifting device consists of a pair of lifting cylinders 19 and 20, by a lifting sleeve 21 and by a tension cylinder 22, and is completed by a carriage 23, by a connecting rod 24, and by a moving assembly 25, as well as by a differential device 37 (figure 2). The carriage 23 is a lever, the lower end of which is articulated by a bearing 26 on the frame 12 of the machine and the end of which upper is articulated, via a bearing 27, to the crew mobile 25. The connecting rod 24 is a lever, the lower end of which is articulated by means of a bearing 28 to the frame 12 of the machine and of which the upper end is articulated, by means of a bearing 29, to the moving element 25. The moving element 25 is made up of two parts integral and sliding one on the other, not shown in the drawing attached, one of which supports the bearing 27 of the upper articulation of the carriage 23 and the other of which supports the upper articulation 29 of the connecting rod 24.

The carriage 23 is driven in an oscillating movement around its lower articulation 26 by means of a lever 30 connected to a Toggling actuator (not shown). So the cart 23 can move between two separate extreme angular positions one on the other from a distance commonly called the carriage stroke. In one of these two extreme positions, the upper end of the carriage 23 located near the feeder and in the other position extreme, the moving element 25 is near a curling box 31. In its upper part, the carriage 23 supports the lower stripper cylinder 19, which is positively controlled in rotation according to a law of motion called the pilgrim's step and which is surmounted by the upper tear-off cylinder 20, the tear-off sleeve 21 being pinched between the tear-off cylinders 19 and 20. The mobile assembly 25 supports, in its part close to the box to curl 31, the tension cylinder 22 of the tear-off sleeve 21, which is kept under tension by spacing one from the other of the two parts sliding of the moving part 25. In addition, the moving part 25 supports, between the tension cylinder 22 and an outlet funnel 32, a pair of detaching cylinders 33a and 33b and, above the sleeve tear-off 21, a sheet on sleeve 34 and an anti-beard cylinder 35.

In order to be animated by a movement called the pilgrim's step, the lifting cylinder 19 has at one of its ends a toothed pinion 36 (not shown) or a chain wheel, which is connected to a device differential 37. This consists essentially of a toothed pinion or a chain wheel 38 mounted on the axis of the lower articulation 26 of the carriage 23 and driven positively in rotation by a cascade of gables (not shown), for example. A beam 39, also mounted on the axis of the lower articulation 26 of the carriage 23, but free in rotation, supports each end of its two arms 40a and 40b of the pinions 41a and 41b, free in rotation. This flail 39 is animated by an oscillating movement by via a lever 42, which is moved by any known means, such as, by example, a crank rod device (not shown). A belt notched 43 or a chain, meshes with the pinions or wheels 36, 38 and 41a and 41b, so that the inside of the belt 43 meshes with the pinions 36, 41a and 41b, while the outer face of the belt 43 meshes with the pinion 38.

During the fiber grubbing phase (Figure 2), the end upper part of the carriage 23 is located near the supply device and the stripping cylinders 19 and 20, associated with the stripping sleeve 21, pinch the end of the fiber heads 11 (not shown), presented by the feeding device. For this purpose, the clamp 6 is open and the sheet between clamp 9 is advanced in the direction of movement of the fibers, so that force the end of the fiber heads to come between the cylinders uprooters 19 and 20. These are rotated so as to extract the fiber heads of the food comb 4 and the carriage 23 is moved in order to move away from the clamp 6.

Combing the tails of fibers using the cleaning of the fiber tails will be carried out simultaneously with this displacement of said fibers. To this end, the device for cleaning the fiber tails has a fixed comb 44 secured to an articulated lever 45. The fixed comb 44 is approached to the fiber heads 11, so that the needles of the fixed comb 44, passing through the material, remove the impurities during movement of the material by the device tear. The impurities thus retained are recovered by gravity and / or by suction with the circular comb 13 and a pneumatic sensor (not represented). The fringe of fibers extracted from the food comb, after having combed by the circular comb 13 and the fixed comb 44, is deposited on the tear-off sleeve, so as to be superimposed on the fiber fringe extracted in the previous cycle but offset from this one. The value of this offset is commonly called the recovery value. This last condition the title in grams per meter of the combed tape, its cohesion and regularity. In order to achieve this overlap, the movement of the tear-off sleeve and of the tear-off cylinders is called the pilgrim's step because, after having made a movement in advance, they will execute a recoil movement, the amplitude of which is less than that of the movement beforehand. This movement is given to them by the differential device 37 described above. The value of the offset or overlap depends directly from the speed of rotation of the toothed pinion or the chain wheel 38, which is mounted on the axis of the lower articulation 26 of the carriage 23 and which is currently positively driven in rotation by a cascade of gables (not shown), the transmission ratio of which can be changed by change of pinions. The setting of the recovery value is currently discontinuous and can only take discrete values. Of more, the change of the recovery value must be made at standstill, successively on each of the machines that make up the battery of combers.

According to the invention, the computer device F, F ', J, N forming the command interface makes it possible to consult and modify the value of the recovery by means of the electronic circuit G forming a local network internal to the machine, continuously and without necessarily having to stop the machine. For this purpose, an electric motor A5, whose speed is freely adjustable independently of the running speed of the machine, but whose speed is controlled by the speed of the main motor A1 of the machine, rotates the differential 37 via the pinion notched or chain wheel 38, which is mounted on the axis of the joint lower 26 of the carriage 23. The electric motor A5 is controlled by the device B5, which can be, for example, a frequency converter, itself connected, using electronic circuit G, to the central unit programmable E, which can be a PLC or a computer. So, he becomes possible to adjust very precisely and while the machine, using a computer device F, F ', J, N, the value of covering, so as to adjust the cohesion and regularity of the combed tape and to fine-tune its title.

This recovery value can also be memorized depending on the batch of material to be worked and thus be recalled for the combing the same batch or a similar batch of material repeatedly and at different times, the combing machine then automatically adjusts the value of the corresponding recovery. The advantage of such a device adjustment becomes particularly evident when several combers are at individually and that they can all be simultaneously and at distance. When several combers are placed in a battery, it is also possible to set for each of them values of different, preferably very slightly different, overlaps so as to further improve the regularity of the ribbons coming out of the passages empty pot and finishers. The process implemented by the device according to the invention also consists in programming a recovery value different from one combing cycle to another by means of the electronic circuit G forming a local network internal to the machine.

Thus, the periodic default due to recovery and the wavelength measured on the combed tape at the exit of the combing machine approximates the value of the beard of the textile material, found camouflaged inside a stretch wave, the consequences of which on the textile quality of the finished product are lower.

The combs of combed textile material, one on top of the other to the others and offset from each other, are moved by the tear-off sleeve 21, which performs a so-called pilgrim's step movement towards the curling box 31. Indeed, after leaving the cylinders strippers 19 and 20, the textile material passes successively between the tear-off sleeve 21 and the anti-beard cylinder 35, then between the sleeve stripping 21 and the sheet on sleeve 34, then between the cylinders detachers 33a and 33b, before engaging in the outlet funnel 32 and finally between the rollers 46a and 46b of the crimping box 31. The sleeve tear-off 21, the anti-beard cylinder 35, the sheet metal on the sleeve 34 and the detaching cylinders 33a and 33b are integral with the moving assembly 25, which is oscillating with respect to the machine frame, around the bearings 26, 27, 28 and 29, while the position of the axes of rotation of the rollers 46a and 46b of the curling box 31 is fixed relative to the machine frame and that the speed of rotation of the rollers 46a and 46b is constant. As a result, the textile material located between the sleeve peeling and the rollers of the curling can is periodically moved between two extreme positions. In one of these extreme positions, the textile material follows a short path located between the sleeve and the rollers of the curling box and in the other of these positions extreme, the textile material follows a long trajectory. It should be paid precisely the tension of the textile material between the tearing sleeve 21 and the rollers 46a and 46b of the curling box 31, so that, when the moving element 25 is distant from the crimping box 31, the material textile is not too tight, to avoid false stretching and cuts, and in such a way that when the moving element 25 is close to the curling box31, it is not too relaxed, because in this case it would come abut against the surrounding mechanical parts, which would lead to destruction of the quality of the textile material.

Currently, the output voltage of the combed tape, between the tear-off sleeve and the entry of the curling box is adjustable by via a pulley variable speed drive operated remotely using of a mechanical transmission with cardan and chains, this setting having to be performed very precisely while the machine is running, the operator being located near the exit, in order to observe the effect of its adjustment on the combed ribbon. This mechanical device is of complex construction and costly and the value of the output voltage of the combed tape is constant at inside a combing cycle.

According to the invention, it is possible to check and modify the output voltage of the combed tape between the tearing sleeve 21 and the rollers 46a and 46b of the crimping box 31, continuously, by means of the computer device F, F ', J, N and of the electronic circuit G forming the internal network inside the machine, without necessarily having to stop the machine. The output voltage of the combed tape is conditioned by the speed ratio between the rollers of the crimping box and the sleeve tear. For this purpose, an A6 electric motor, whose speed is freely adjustable independently of the running speed of the machine, but whose speed is controlled by the speed of the A5 motor itself at the speed of the main engine A1 of the machine, rotates the rollers 46a and 46b of the crimping box 31. The electric motor A6 is controlled by the control device B6, which can be, for example, a variator frequency, itself connected, using the electronic circuit G forming the local machine internal network to the programmable central unit E, which can be an automaton or a computer. Setting the output voltage of the combed tape is obtained, either by manipulation of the computing device F, F ', J, N, either by directly displaying the desired value, or by actuating + or - buttons respectively intended to increase and decrease this tension.

The value of this output voltage of the combed tape can also be memorized according to the batch of material to be worked and, thus, be called back for combing the same or a similar batch of material repeatedly and at different times, the combing machine then automatically adjusting the value of the ribbon output voltage combed matching. The advantage of such an adjustment device is obvious when several combers are to be adjusted individually, simultaneously and remotely or, when several combers are placed in battery of set for each of them ribbon output voltage values combed different to take into account for example sleeves of different quality or condition.

According to the invention the ribbon output voltage combed between the tear-off sleeve 21 and the rollers 46a and 46b of the box curling 31 can be variable within the same combing cycle and can be reduced when the moving element 25 is moved away from the curling box 31 and increased when the moving part is close to the curling box.

Between these two extreme values of tension, one will modify gradually the tension, in order to spare the cohesion of the ribbon. In this way, any risk of cutting the combed tape is avoided and the textile quality is optimized.

Of course, the invention is not limited to the mode of embodiment described and shown in the accompanying drawings. Modifications remain possible, especially from the point of view of the constitution of the various elements or by substitution of technical equivalents, without leaving for as much of the protection field of the invention.

Claims (22)

Device for controlling and consulting the operating parameters of textile machines, in particular carding, combing, cracking, converting, spinning preparation and spinning machines, in particular a carding machine, a carding reducing head, a combing machine, a cracker, a converter, a chain gills, a screw gills, a wiper, a spindle bench, a spinning machine or a gimp machine, comprising electric motors (A), devices (B) control of electric motors, sensors (C), actuators (D) and at least one programmable central unit (E), characterized in that it is essentially constituted by an electronic circuit (G) forming a local network internal to the machine such as a "field bus" and connecting the devices (B) for controlling the motors (A), the sensors (C) and the actuators (D) to the programmable central unit (E) and by at least one machine control interface connected to said circ electronic (G) and formed by a computer device (F, F ', J, N) comprising a display screen and a control keyboard. Device according to claim 1, characterized in that the programmable central unit (E) is provided with at least one means of connection to at least one programmable central unit of at least one other textile machine by means of at least one local inter-machine network (H) and at least one IT device (F, F ', J, N). Device according to either of Claims 1 and 2, characterized in that the computer device (J) is a central computer. Device according to either of Claims 1 and 2, characterized in that the programmable central unit (E) is in the form of a programmable controller or a computer. Device according to either of Claims 1 and 2, characterized in that the programmable central unit (E) is connected, directly or via the local inter-machine network (H), to an external communication network (K), such as INTERNET, for connection to a remote computer (N). Device according to either of Claims 1 and 2, characterized in that the computer device forming the control interface consists of a radio transceiver (L) connected to the programmable central unit (E) of the machine or to the local inter-machine network (H) and by a radio transceiver (M) connected to a portable terminal (F '). Device according to either of Claims 1 and 2, characterized in that the machine operating parameters, for the insertion of the data into the programmable central unit (E) by means of the computer devices (F, F ' , J, N) forming the control interfaces, are carried on tables or charts specific to the batches of material to be treated and collected in a corresponding compartment of the textile machine and / or in a remote archiving means which can be consulted by the operators . Device according to claim 1, characterized in that the textile machine is a straight combing machine. Device according to any one of claims 1, 2 and 8, characterized in that the programmable central unit (E) is provided with a connection for an additional control button (P) for direct actuation of a motor electric (A2) for rotating the food cylinders (3a and 3b) of the combing machine and the call cylinders (2) of the rack (1). Device according to any one of Claims 1, 2 and 8, characterized in that it is completed by an incoming mass irregularity sensor, located upstream of the food cylinders (3a and 3b). Device according to any one of claims 1, 2 and 8, characterized in that it is supplemented by a device for detecting the degree of fouling of the circular comb (13) cooperating in the control of the speed of rotation of the cylindrical brush (15) and associated with an automatic advance device of the cylindrical brush (15), intended to take up the wear of the cylindrical brush (15). Method implemented by the device according to any one of Claims 1 to 11, characterized in that it consists essentially in connecting the motor control devices (A), the sensors (C) and the actuators (D) to a programmable central unit (E) and at least one machine control interface formed by a computer device (F, F ', J, N) by means of an electronic circuit (G), forming an internal local area network the machine such as a "field bus", this control interface comprising a display screen and a control keyboard, to control the machine and to consult the operating parameters of the machine by means of the control interface and analyzing the data using said interface. Method according to claim 12, characterized in that it consists in consulting the operating parameters of the machine by means of a computer (J, N) and in analyzing them by means of data processing software, statistical purposes. Method according to claim 12, characterized in that it consists in diagnosing the operating state of the textile machine by means of the computer devices (F, F ', J, N) forming the control interfaces. Method according to claim 12, characterized in that it consists in consulting and modifying the feed value, which is expressed in mm / combing cycle, by means of the local network (G) internal to the machine. Method according to claim 12, characterized in that it consists in consulting and modifying the speed of rotation of the circular comb (13), by means of the electronic circuit (G) forming a local network internal to the machine. Method according to claim 12, characterized in that it consists in continuously consulting and modifying the speed of rotation of the cylindrical brush (15). Method according to claim 12, characterized in that it consists in consulting and modifying the recovery value by means of the electronic circuit (G) forming a local network internal to the machine, this continuously and without necessarily having to stop the machine. Method according to claim 12, characterized in that it consists in programming an overlap value different from one combing cycle to another by means of the electronic circuit (G) forming a local network internal to the machine. Method according to claim 12, characterized in that it consists in checking and modifying the output voltage of the combed tape between the tear-off sleeve and the rollers of the crimping box, continuously, by means of the computer device (F, F ', J, N) and the electronic circuit (G) forming the local network internal to the machine, without necessarily having to stop the machine. Method according to claim 12, characterized in that it consists in varying the output voltage of the combed tape between the tear-off sleeve and the rollers of the crimping box within the same combing cycle. Method according to claim 12, characterized in that it consists in reducing the output tension of the combed tape between the tear-off sleeve and the rollers of the crimping box, when the moving element is moved away from the crimping box and to increase said tension when the moving element is close to the curling box.

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