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    • 专利摘要:
    A method for monitoring the bearings of a shedding machine in a loom includes: determining a load imposed on the bearings of the drive system; determining a rotational speed of the shedding motor during weaving of the fabric; the determination of an average load imposed on the bearings based on the determined load imposed on the bearings, on the determined rotational speed of the shedding motor and on a period during which the loom was set. service; determining an average rotational speed of the shedding motor during an accumulated time in which the loom has been put into use; and determining a life span of the bearings.
    公开号:BE1024844B1
    申请号:E2017/5457
    申请日:2017-06-27
    公开日:2018-07-24
    发明作者:Hiromasa Sugiyama
    申请人:Kabushiki Kaisha Toyota Jidoshokki；
    IPC主号:
    专利说明:

    (30) Priority data:
    06/30/2016 JP 2016 129,880 (73) Holder (s):
    KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    448-8671, AICHI-KEN
    Japan (72) Inventor (s):
    SUGIYAMA Hiromasa 448-8671 AICHI-KEN Japan (54) METHOD AND DEVICE FOR MONITORING THE BEARINGS OF A CROWD FORMING APPARATUS
    HG 1 (57) A method for monitoring the bearings of a shedding apparatus in a loom includes: determining a load imposed on the bearings of the drive system; determining a speed of rotation of the shedding motor during the weaving of the fabric; determining an average load imposed on the bearings based on the determined load imposed on the bearings, on the determined speed of rotation of the shedding engine and over a period during which the weaving loom was put in service; determining an average speed of rotation of the shedding motor during an accumulated time during which the loom has been put into service; and determining a bearing life.
    BELGIAN INVENTION PATENT
    FPS Economy, SMEs, Middle Classes & Energy
    Publication number: 1024844 Deposit number: BE2017 / 5457
    Intellectual Property Office International Classification: D03C 13/00 D03J 1/00 Date of issue: 07/24/2018
    The Minister of the Economy,
    Having regard to the Paris Convention of March 20, 1883 for the Protection of Industrial Property;
    Considering the law of March 28, 1984 on patents for invention, article 22, for patent applications introduced before September 22, 2014;
    Given Title 1 “Patents for invention” of Book XI of the Code of Economic Law, article XI.24, for patent applications introduced from September 22, 2014;
    Having regard to the Royal Decree of 2 December 1986 relating to the request, the issue and the maintenance in force of invention patents, article 28;
    Given the patent application received by the Intellectual Property Office on 27/06/2017.
    Whereas for patent applications falling within the scope of Title 1, Book XI of the Code of Economic Law (hereinafter CDE), in accordance with article XI. 19, §4, paragraph 2, of the CDE, if the patent application has been the subject of a search report mentioning a lack of unity of invention within the meaning of the §ler of article XI.19 cited above and in the event that the applicant does not limit or file a divisional application in accordance with the results of the search report, the granted patent will be limited to the claims for which the search report has been drawn up.
    Stopped :
    First article. - It is issued to
    KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, 2-1 Toyoda-cho, Kariya-shi, 448-8671AICHI-KEN Japan;
    represented by
    VAN VARENBERG Patrick, Arenbergstraat 13, 2000, ANTWERPEN;
    a 20-year Belgian invention patent, subject to payment of the annual fees referred to in article XI.48, §1 of the Code of Economic Law, for: PROCESS AND DEVICE FOR THE
    MONITORING THE BEARINGS OF A MOBILE TRAINING APPARATUS IN A
    SUGIYAMA Hiromasa, c / o KABUSHIKI KAISHA TOYOTA JIDOSHOKKI 2-1 Toyoda-cho, Kariya-shi, 4488671, AICHI-KEN;
    WEAVING.
    INVENTOR (S):
    PRIORITY (S):
    06/30/2016 JP 2016 129,880;
    DIVISION:
    divided from the basic application: filing date of the basic application:
    Article 2. - This patent is granted without prior examination of the patentability of the invention, without guarantee of the merit of the invention or of the accuracy of the description thereof and at the risk and peril of the applicant (s) ( s).
    Brussels, 07/24/2018, By special delegation:
    BE2017 / 5457
    METHOD AND DEVICE FOR MONITORING THE BEARINGS OF A CROWD FORMING APPARATUS OF A WEAVING MATERIAL
    FOUNDATION OF THE INVENTION
    The present invention relates to a method and a device for monitoring the bearings used in a shedding apparatus in a weaving loom, in particular in a weaving loom in which the heald frames are driven independently by their Crowd training engines for determining the lifetimes of individual bearings.
    In a crowd-forming apparatus of a weaving loom (hereinafter referred to as "electronic crowd-forming apparatus" having a number of heald frames and a number of motors of crowd formation which are associated with the respective heald frames and which drive the heald frames respectively independently, each crowd formation motor and its associated heald frame are connected to each other via a mechanism The linkage mechanism includes a reduction gear assembly connected to the crowd-forming motor, an eccentric wheel, a link bar, a crowd-forming lever, and a hinge that connects the crowd-forming lever. the crowd and the heald frame to each other.
    BE2017 / 5457
    In addition, in an electronic crowd-forming apparatus of this type, bearings are provided for the drive shafts of the crowd-forming motors, support portions between the reduction gear assemblies and the eccentric wheels, connections between the eccentric wheels and the connecting bars, connections between the connecting bars and the crowd training levers and connections between the crowd training levers and the joints. The bearings represent consumable parts with predetermined service lives which are specified by the manufacturer. The replacement of the bearings is managed or ordered based on their service lives and the replacement of a bearing is implemented conventionally before the end of its service life, that is to say before the time has elapsed. or before the period during which the bearing was used becomes equal to the service life specified for the bearing.
    In the publication of Japanese Unexamined Patent Application No. H09-59852, a system for managing consumable parts for textile machines such as a loom and a spinning machine is disclosed. In a conventional manner, the consumable parts are managed or are replaced by new ones based simply on the time elapsed since the start of the use of the parts. We count for example the time elapsed
    BE2017 / 5457 for a consumable part, without taking into account whether the loom is in working or stopped state, so that the appropriate time for the replacement of consumable parts cannot be known . In accordance with the disclosure of the publication of Japanese Unexamined Patent Application No. H09-59852, the factors that affect or influence the consumption of the life of a consumable part are detected by factor detection means, the consumed life of the consumable part is calculated based on the factors detected by the factor detection means, and a comparison is made between the calculated consumed life and a predetermined life of the consumable part. Since the actual or accumulated total operating time or duration of the consumable part is counted as a factor affecting the service life, the appropriate moment corresponding to the replacement of the consumable part cannot be determined and remains unknown.
    Consumable parts of a loom disclosed in publication no. H09-59852 indicated above include a braking mechanism for a motor for driving the loom, ropes for driving the frames heddles constituting the crowd-forming apparatus, a support shaft for a cam lever constituting a cam mechanism, a felt element fixed on the peripheral surface of the pressure roller and compressed against a surface roller for the winding of a woven fabric, a blade for cutting weft thread in a jet type loom and components of a switching valve for controlling the air supply
    BE2017 / 5457 for the insertion of the weft thread.
    In the publication indicated above, although the total operating time of the loom is revealed to be the main factor affecting the consumption of service life, environmental information and information regarding the operation of a consumable part are also taken into consideration. The environmental information is detected by a factor detection means, such as a temperature sensor, a humidity sensor, a charge current sensor, an energy consumption sensor, a sensor of air consumption, an acceleration sensor, a load torque sensor and a displacement sensor. Charging temperature and current affect the lifetimes of capacitors, backup power supply, and the like. Acceleration and load torque affect the service lives of mechanical parts such as gears and bearings. Humidity affects the corrosion rate or the like of metal parts.
    In accordance with the publication no. H09-59852 indicated above, the operating information includes the speed of rotation of the weaving loom, the frequency of weft insertion, the tension of the warp threads and the issuance of signals. integration command providing indications as to the operating state of the loom. In another example revealed in the publication, the life consumed is calculated based on a predetermined equation in which the information concerning
    BE2017 / 5457 the environment and the information concerning the operation which have been indicated above. As was the case in the first example, the calculated consumed life is compared to the predetermined life to determine the time corresponding to the replacement of the consumable part.
    The electronic crowd training device includes a number of heald frame units. Each heald frame unit includes a heald frame, a crowd forming engine, and a linkage mechanism that links the heald frame to the crowd forming engine via an eccentric wheel and a linkage assembly. reduction gear. Bearings in the form of consumable parts are provided at the connections between the components and on the support shafts of the heald frame units. A loom has four to sixteen heald frames depending on the specifications of a fabric to be woven by the loom and of course a number of heald frame units which corresponds to the number of heald frames
    0 which are provided in the loom. Since the space for mounting the heald frames is limited, the dimension of a heald frame in a direction in which the heald frames are arranged (i.e. the width dimension) is adjusted ten millimeters, so that a number of heald frames are arranged with small intervals. The size of the bearings used for the components of each heald frame unit is set to be less than the width dimension of the heald frames in the mounting direction, except for the bearings that are used for the training engine
    BE2017 / 5457 of fouleα crowd and for the reduction gear assembly.
    The specifications of the fabrics are often changed depending on the fabric to be woven in such a way that the loom is configured to weave fabrics of different weaves or different specifications and the settings of the loom are appropriately modified according to the specifications indicated. Even in the case of weaving fabrics having the same specifications, a certain number of settings of the loom, such as for example the speed of rotation or the number of rotations of the loom, can be modified in order to amplify production or improve the reliability of the weaving operation. Such modifications to the specifications of the weaving cloth and the settings of the loom result in a change in the load imposed on the electronic shedding apparatus, which largely affects the service lives of the bearings that it is used in the loom.
    When the service lives of the bearings which represent consumable parts of an electronic crowd formation apparatus, are monitored with the method revealed in publication No. H09-59852, the problems listed below are faced. In accordance with the publication process, the remaining service life of a bearing is determined by measuring the accumulated time corresponding to the operation of the loom and by comparing the accumulated operating time obtained with the specific service life. bearings. However, in a determination of this type, a precise remaining service life of the bearing cannot be obtained since variations in
    BE2017 / 5457
    Chargeα load imposed on the bearings on the basis of a modification of the settings of the loom and the specifications of the fabric are not taken into consideration.
    In order to be able to detect variable loads imposed on a level of the electronic crowd formation device, an acceleration sensor and a load torque sensor can be used which provide information concerning the acceleration of mechanical parts (c (i.e. gears, bearings, etc.) and load torques respectively, as disclosed in another embodiment of publication No. H09-59852. However, since the bearings as consumable parts used for the electronic crowd training apparatus are designed in such a way that they have an extremely minimal width and since a number of frame units of smooth having such bearings are arranged with small intervals, it is difficult in practice to mount different sensors for each bearing and their components near said bearings. For the reason indicated above, the method and the system according to the publication indicated above are not capable of providing an accurate determination of the bearing lifetimes in the context of taking into account the variation in the load. imposed on the landings due to the modification of the specifications of the fabric and the settings of the loom.
    The present invention, the object of which is based on the circumstances indicated above, relates to the fact of providing a method and a device for monitoring the bearings used in a control device.
    BE2017 / 5457 formation of the crowd of a loom, which are able to determine the remaining service lives of the bearings without having to mount sensors for the detection of variations in the loads imposed on the bearings, but taking into account the variations of the loads imposed on the bearings on the basis of a modification of the specifications of the fabric and the settings of the loom.
    SUMMARY OF THE INVENTION
    In accordance with one aspect of the present invention, there is provided a method for monitoring the bearings of a crowd forming apparatus of a loom. The crowd forming apparatus includes a number of drive systems which are each associated with a heald heald frame and which each include a crowd forming engine which is adapted to drive the heald frames reciprocally independent, and a link mechanism which establishes a link between the crowd forming engine and the heald frame. Each drive system has at least one bearing which is connected to one end of the linkage mechanism. The process for bearing monitoring includes determining a load on the bearing of the drive system based on the weaving specifications of a fabric to be woven and the settings of the loom which are specified for the weaving of the fabric, the fact of determining a speed of rotation of the crowd-forming motor during the weaving of the fabric with the load determined based on the specifications of the fabric and on the settings of the loom to weaving, the fact of determining an average load imposed on the bearing by
    BE2017 / 5457 based on the determined load imposed on the bearing, on the determined speed of rotation of the shedding motor and on a duration of operation of the loom with the determined load imposed on the bearing, the fact of determining a speed average rotation of the shedding motor for an accumulated duration of operation of the loom from an initial start of the commissioning of the loom, and the fact of determining a lifetime of the bearing in based on the determined average load imposed on the bearing and on the determined average speed of rotation of the crowd forming engine. The determinations of the load imposed on the bearing, the rotation speed of the crowd-forming motor, the average load imposed on the bearing, the average rotation speed of the crowd-forming motor and the service life of the bearing are implemented after the initial start of the commissioning of the weaving loom and after each subsequent start of the operation of the weaving loom resulting from a modification which is made to at least one element chosen from the specifications of the fabric and settings of the loom.
    In accordance with another aspect of the present invention, there is provided a device for monitoring bearings of a crowd forming apparatus of a loom. The crowd forming apparatus includes a number of drive systems which are each associated with a heald heald frame and which each include a crowd forming engine which is adapted to drive the heald frames respectively independently and a connecting mechanism which connects the crowd training engine to the heald frame. Each
    BE2017 / 5457 drive system has at least one bearing which is connected to one end of the linkage mechanism. The device for monitoring the bearings includes a controller having a storage portion and an operating portion, a data input portion and a rotation detector. The storage portion is designed to store various data therein including the specifications of a fabric to be woven and the settings of the loom that are specified for weaving the fabric. The operating portion is designed to perform a number of calculations. The data entry portion is designed to enter a number of data therein including weaving specifications and settings of the loom and to store them in the storage portion. The rotation sensor is adapted to detect the speed of rotation of the crowd-forming motor and to send signals providing indications of the detected speed of rotation of the crowd-forming motor to the controller in such a way that the sent signals are stored in the storage portion. The calculations made by the operating portion include the calculation of a load imposed on the bearing of the drive system based on the weaving specifications of a fabric to be woven and on the settings of the loom which are specified for weaving the fabric, calculating a speed of rotation of the shedding motor during weaving of the fabric with the load determined based on the specifications and on the settings of the loom, the calculation of an average load imposed on the bearing on the basis of the determined load imposed on the bearing, on the determined speed of rotation of the shedding engine and on a duration of operation of the loom with the load
    BE2017 / 5457 determined imposed on the bearing, the calculation of an average speed of rotation of the crowd formation engine during an accumulated duration corresponding to the operation of the loom from an initial start of the commissioning of the weaving loom, and the calculation of a bearing life based on the determined average load imposed on the bearing and on the determined average speed of rotation of the crowd forming motor. Calculations of the load imposed on the bearing, the rotation speed of the crowd-forming motor, the average load imposed on the bearing, the average rotation speed of the crowd-forming motor and the service life of the Landing is carried out after the initial start of the commissioning of the weaving loom and after each subsequent start of the operation of the weaving loom which results from a modification which was made to at least one element chosen from the specifications of the fabric and settings of the loom.
    Other aspects and other advantages of the invention will emerge from the following description, when taken in conjunction with the appended drawings in which the principles of the invention are illustrated by way of example .
    BRIEF DESCRIPTION OF THE DRAWINGS
    Figure 1 is a fragmentary front view in which schematically shows part of an electronic crowd training apparatus of a loom in accordance with an embodiment of the present invention;
    BE2017 / 5457
    Ια Figure 2 is a schematic plan view of the electronic crowd training device of Figure 1; and Figure 3 is a flow diagram in which there is shown a device for monitoring the bearings of the loom.
    DETAILED DESCRIPTION OF EMBODIMENTS
    Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. It should be noted that in the description which follows, the left and right sides which are represented in FIG. 1 correspond to left and right sides of the loom, respectively, and the upper and lower sides shown in Figure 1 correspond to the upper and lower sides of the loom, respectively. Likewise, the side of the loom to which a woven fabric is wound corresponds to the front side of the loom and the side of the loom to which warp threads are unwound corresponds to the rear side of the loom. Referring to Figure 1, there is shown a crowd forming apparatus 1 (hereinafter referred to as "electronic crowd forming apparatus 1") in a loom which includes a a number of heald frames that are independently driven by their associated crowd-forming engines.
    The weaving loom having the electronic shedding apparatus 1 in accordance with the present embodiment includes a frame 2 arranged on the right side of the loom, a frame (not shown) arranged on the left side of the loom,
    BE2017 / 5457 and eight heddle frames 3 arranged in the direction back and forth or the longitudinal direction of the loom between the frames on the lateral sides of the loom. As shown in FIG. 2, the heald frames 3 encompass from one to eight heald frames 3A-3H, arranged in the following order: the first heald frame 3A which is placed at the furthest point front of the loom, the second heald frame 3B, the third heald frame 3C, the fourth heald frame 3D, the fifth heald frame 3E, the sixth heald frame 3F, the seventh 3G heald frame and the eighth heddle frame 3H which is arranged at the rearmost point of the loom.
    Referring again to FIG. 1, eight drives are shown, more precisely, a first drive 4A, a second drive 4B, a third drive 4C, a fourth drive 4D, a fifth drive 4E, a sixth drive 4F, a seventh drive 4G and an eighth drive 4H, which are arranged in this order on the right side of the frame 2 and which are associated with their corresponding heald frames 3A-3H. The first drive 4A drives the first heald frame 3A. In the same way, the second to eighth drives 4B-4H drive their second to eighth respective heald frames associated 3B-3H, independently of each other. The first to fourth drives 4A-4D are arranged in a row on the lower side of the loom and the fifth to eighth drives 4E-4H are arranged in a row above the first to fourth drives 4A-4D.
    The first to eighth drives 4A-4H all have
    BE2017 / 5457 essentially Ια same configuration. Consequently, the description which follows will focus on the configuration of the first drive 4A which represents the other drives. As shown in Figure 2, the first drive 4A includes a motor housing 5 having an elongated configuration in the depth direction of the loom and a reduction gear housing 6 having an elongated configuration in the vertical direction of the loom. loom. The motor housing 5 and the reduction gear housing 6 are made in one piece.
    A crowd-forming motor 7 having a motor shaft 8 is disposed in the motor housing 5 and a rotation detector 9 provided with an encoder or the like which detects the rotation of the crowd-forming motor 7 and a motion detector current 10 which detects the current flowing in the shedding motor 7 are mounted on the motor shaft 8. In FIG. 1, the rotation detector 9 and the current detector 10 are illustrated in the same place for convenience. 'drawing. Although it is not
    0 illustrated, in the reduction gear housing 6, a reduction gear assembly including a group of gears is connected to the drive shaft 8 of the shedding motor 7 in such a way that the reduction gear assembly reduces the number of rotations, that is to say the speed of rotation of the shedding motor 7. A bearing (not shown) on which is placed the motor shaft 8 of the motor for forming the crowd 7 is mounted in the motor housing 5 and a bearing (not shown) on which the reduction gear assembly is placed is mounted in the reduction gear housing 6.
    BE2017 / 5457
    An eccentric wheel 11 is disposed outside the front side of the reduction gear housing 6 and is connected to the reduction gear assembly in the reduction gear housing 6. The eccentric wheel 11 includes a shaft eccentric 12 to which one end of a connecting rod 13 is connected via a bearing 14. The other end of the connecting rod 13 is connected to an arm 16 of a shedding lever 15 comprising three arms, via a bearing 17.
    The crowd forming lever 15 is disposed within a space 18 formed at the base of the frame 2 and rotatably supported on a common shaft 19 fixed to the frame 2 via a bearing 20. The crowd forming lever 15 has three arms 16, 21 and 22 extending in different directions. The arm 21 is connected via a bearing 24 to a hinge 23 which is in turn connected to the lower right part of the first heald frame 3A. The arm 22 is connected via a bearing 26 to a hinge 25 which is in turn connected via an oscillating lever (not shown) and via another hinge (not shown) to the first heald frame 3A at the lower left end of this latest.
    The reduction gear assembly in the reduction gear housing 6 of the first drive 4A, the eccentric wheel 11, the connecting rod 13, the shedding lever 15 and the joints 23, 25 cooperate to constitute a link mechanism 27. The crowd-forming motor 7 of the first drive 4A and the link mechanism 27 cooperate to form a drive system for the first frame
    BE2017 / 5457 of heddles 3A. The crowd-forming motor 7 of the first drive 4A is driven to perform rotations and thus subject the first heald frame 3A to upward and downward movements for the crowd-forming movement via the linkage mechanism TJ.
    The second to eighth drives 4B-4H each have the same configuration as that of the first drive 4A, and the crowd formation motors 7 for the drives 4B-4H are driven to subject the second to eighth heald frames 3B-3h respectively. upward and downward movements for the crowd forming movement via the TJ linkage mechanism. Consequently, the electronic crowd forming apparatus 1 includes the first to eighth heald frames 3A-3H and the first to eighth drives 4A-4H which train their first to eighth associated heald frames 3A-3H independently of each other. others, as well as the eight connecting mechanisms 27 which connect the heald frames 3A-3H and the drives 4A-4H, respectively.
    The crowd formation motors 7 of the respective first to eighth drives 4A-4H are electrically connected to a controller 28 of the loom via cables. The controller 28 sends drive signals to the crowd formation engine 7 based on the crowd training programs of the warp threads, which are stored in advance, so as to be subjected to movements. ascending and descending the first to eighth respective heald frames 3A-3H for the crowd forming movement. The rotation detector 9 and
    BE2017 / 5457 the current detector 10 of each shedding motor 7 are electrically connected to the controller 28 via cables and send signals to the controller 28 which provide indications concerning the speed of rotation of the loom and the current flowing in the shedding motor 7, respectively, which are detected when the shedding motor 7 is energized.
    As shown in FIG. 3, the controller 28 has a storage portion 29 and an operating portion 30, and the rotation detector 9, the current detector 10, a data input portion 31, a display screen 32 and a reset switch are electrically connected to the controller 28. The data input portion 31 is designed in such a way that various data such as, for example, control programs necessary for the operation of the loom and the crowd of warp training program for controlling the movement of crowd formation of warp threads, specifications of the loom, as well as various settings for the loom are entered via the data entry portion 31. The data entered and incorporated via the data entry portion 31 are stored in the storage portion 29. The operating portion 30 extracts pa r appropriately reads the data stored in the storage portion 29 and performs a certain number of operations or calculations using the data extracted by reading.
    The various control programs include equations for calculating or determining the imposed loads
    BE2017 / 5457 at levels 14, 17, 20, 24 and 26 which are used in the components of the electronic crowd formation device 1, the drive shafts 8 of the crowd formation engines 7 coming to be arranged on the bearings and the reduction gear assemblies which are arranged on the bearings. The various control programs also include equations for obtaining the lifetimes of the bearings 14, 17, 20, 24 and 26 which are used in the components of the electronic crowd formation device 1, the drive shafts 8 of the crowd forming motors 7 coming to be arranged on the bearings and the reduction gear assemblies coming to be arranged on the bearings. Below, the bearings 14, 17, 20, 24 and 26 which are used in the components of the electronic crowd formation apparatus 1 and the bearings on which the drive shafts 8 of the formation motors are arranged. of the crowd 7 as well as the bearings on which the reduction gear assemblies are placed will be collectively designated by the expression "bearings 14, 17, 20, 24, 26, etc." "
    Examples of fabric specifications that affect or affect
    0 influence the load on the electronic crowd-forming apparatus 1 include, but is not limited to, types of warp threads, tension of warp threads, pattern of weave, density of armor. Examples of loom adjustments which affect the load on the electronic shedding apparatus 1 include, but are not limited to, the weaving width, the extent of shedding of warp yarns, the cam angle of the warp threads, the number of heddles used to hold the warp threads, the number of heald frames required, the target speed of rotation (i.e. the number of
    BE2017 / 5457 target rotations) of the loom. The display screen 32 is designed to display information such as the data stored in the storage portion 29 and the results of the calculations performed by the operating portion 30, for example the calculated lifetimes of the bearings 14 , 17, 20, 24, 26, etc. The reset switch 33 is designed for resetting and erasing the results of calculations previously carried out to obtain the service lives of the bearings 14, 17, 20, 24, 26, etc. For example, by putting the reset switch 33 into service, the result of the previous calculation is erased and brought to zero.
    The service lives of bearings 14, 17, 20, 24, 26, etc. can be calculated using the following well-known equation 1:
    Equation 1
    In equation 1 above, Lh represents the basic calculated duration; N represents the average speed of rotation; C represents the basic charge; and F m represents the average bearing load. The basic load C varies according to the types of bearings. In other words, the bearings 14, 17, 20, 24, 26 etc., have their own specific basic loads C. The average speed of rotation N represents the average speed of rotation or the average number of rotations of the electronic device of shed formation 1 or shedding formation engine 7 for an accumulated operating time or for a duration of the loom which is counted from a time corresponding to an initial start-up of commissioning of the weaving loom with the use of a new bearing until a time when a calculation is made to obtain the life of the bearing. The average load F m represents the average load imposed on the bearings 14,
    17, 20, 24, 26, etc., for the accumulated operating time of the weaving loom from the initial start of the commissioning of the weaving loom.
    BE2017 / 5457
    The average load F m is calculated using the following well-known equation 2:
    Fm F
    N 1 T r + F * N 2 T 2 + - + F% N n T n N 1 7 ^ + N 2 T 2 + ··· + N n T n
    Equation 2
    In equation 2 above, F m represents the average load imposed on the bearing, which is determined based on the speed of rotation described above and on the accumulated operating time of the loom; Fi, F2, ... F n represent the loads that are determined based on the specifications of the fabric and on the settings of the loom; Ni, N2, ... N n represent the rotational speeds during a weaving with the loads Fi, F2, ... F n ; Τι, T2, ... T n represent the operating times of the loom during weaving with the loads Fi, F2, ... F n ; and k represents a fixed factor. The factor k is 3.0 in the case of a ball bearing and 10/3 in the case of a roller bearing. The rotational speeds Ni, N2, ... N n represent the rotational speeds of the shedding motor 7 which are detected by the rotation detector 9 during weaving with the loads Fi, F2, .. F n . The charges Fi, F2, ... F n represent the charges imposed on the stages 14, 17, 20, 24, 26, etc., of the electronic crowd formation device 1 which is calculated on the basis of the specifications of the fabric and the settings of the loom. In other words, the charges
    BE2017 / 5457 imposed on the steps 14, 17, 20, 24, 26, etc., represent variables which depend on the specifications of the fabric and the settings of the loom.
    It should be noted that in the electronic chicken formation apparatus 1 of this embodiment, the loads imposed on the respective landings 14, 17, 20, 24, 26, etc. can be calculated and can be estimated using data accumulated over the years of operation by weaving workshops and experimental data obtained from trial weavings.
    The management or monitoring of the service life of the bearings 14, 17, 20, 24, 26, etc., which is used in the components of the electronic crowd formation apparatus 1 will now be described. Before a weaving operation, data such as the specifications of a fabric to be woven as well as the settings of the loom for weaving the fabric are entered and incorporated via the data input portion 31 of the controller. 28 of the loom and the input data is stored in the storage portion 29 of the controller 28. Next, various elements or various mechanisms of the loom are adjusted automatically or else manually to obtain their conditions specified in based on the entered settings of the loom. Hereinafter, the specifications of the fabric and the settings of the loom for the fabric which is subjected to an initial weaving will be collectively designated by the term "specifications 1".
    BE2017 / 5457
    In each drive system of the electronic shedding apparatus 1, the bearing 14 of the eccentric shaft 12 for the eccentric wheel 11, the bearing 17 at the connection between the connecting rod 13 and the arm 16 of the crowd forming lever 15, the bearing 24 at the link between the arm 21 of the crowd forming lever 15 and the joint 23, and the bearing 26 at the link between the arm 22 of the crowd forming lever 15 and the joint 25 are subjected to a load which results from the commissioning of the electronic shedding device 1. The bearing (not shown) on which the reduction gear assembly is placed in the reduction gear housing 6 is subjected to a load which is due to the weight of the reduction gear assembly and to a load which results from specifications 1. The bearing of the shedding motor 7 in the housing of motor 5 is subjected to a load which is due to the weight of the reduction gear assembly. The load of the weight of the reduction gear assembly imposed on the bearing of the reduction gear assembly and that imposed on the bearing of the shedding motor 7 are calculated based on the current detected or read by the current detector 10.
    Hereinafter, the procedures implemented to determine or calculate the service lives of the bearings 14, 17, 20, 24, 26, etc. will be described. It should be noted that the calculations which are associated with the determination of the service lives in this case are carried out for each of the individual bearings 14, 17, 20, 24, 26, etc. While the weaving machine is put into service according to the specifications 1, the rotation detector 9 and the current detector 10 measure or read the rotation speed Ni of the
    BE2017 / 5457 crowd formation 7 and the current flowing in the motor in question, respectively, in real time and send the data or the signals of the measured values to the controller 28, the received data being stored in the storage portion 29 of the controller 28.
    While the weaving loom is put into service in accordance with the specifications 1, the operating portion 30 of the controller 28 calculates an initial load Fi imposed on the bearings 14,
    17, 20, 24, 26, etc., of the electronic crowd-forming apparatus 1 based on the specifications 1 and on the current of the crowd-forming motor 7 measured by the current detector 10. Then , based on the obtained rotation speed Ni and on the load Fi, the operating portion 30 calculates the average load F m imposed on the bearings 14, 17, 20, 24, 26, etc., using the equation 2. Based on the rotational speed data stored in the storage portion 29, including the rotational speed Ni of the shedding motor 7 for the initial operating time Ij of the loom with the load Fi
    0 imposed on the stages 14, 17, 20, 24, 26, etc., the operating portion 30 calculates the average speed of rotation of the crowd-forming motor 7. In the case of specifications 1, the speed of rotation Ni corresponds to the average speed of rotation of the shedding motor 7 and the operating time Ij represents a period of time during which the loom is put into service in accordance with the specifications 1 with the load Fi imposed on the bearings 14 , 17, 20, 24, 26, etc., from the initial start-up of the weaving machine. Based on the calculated average load F m imposed on the bearings 14, 17, 20, 24, 26, etc., and on the
    BE2017 / 5457 average rotation speed N of the shedding motor 7, the operating portion 30 calculates the service life or the basic calculated duration of the bearings 14, 17, 20, 24, 26, etc., in using equation 1. Next, the operating portion 30 compares the life of the bearings 14, 17, 20, 24, 26, etc., calculated using equation 1, to the accumulated operating time of the loom which corresponds to the accumulated time during which the bearings have been used from the initial start of the commissioning of the loom to thereby determine and confirm the remaining life of the bearings 14, 17, 20, 24 , 26, etc. In the envisaged case, the operating time corresponds to lj. The calculated service life and the remaining service life can be displayed on the display screen 32 so as to inform the manager and operator of the loom of the bearings situation. The data of the calculated load Fi, of the average load F m and of the life of the bearings 14, 17, 20, 24, 26, etc., can be reset or erased as desired, by actuating the reset switch 33.
    At the end of the commissioning of the weaving loom in accordance with the specifications 1, in the case where a fabric having different fabric specifications and requiring different settings of the weaving loom compared to the specifications 1 must be woven thereafter, a new set of fabric specifications and settings of the loom for the new fabric is entered via the data input portion 31 and is stored in the storage portion 29. In the interest of the description, the new fabric specifications and the new settings of the loom for weaving this new fabric will be designated from
    BE2017 / 5457 collectively by the term "specifications 2".
    When the accumulated operating time of the loom since its initial operation has become equal to the limit for the replacement of bearings 14, 17, 20, 24, 26, etc., or exceeds the limit in question, information indicating that any of the steps 14, 17, 20, 24, 26, etc., has reached its replacement limit are displayed on the display screen 32 and a warning indication or the like is added to the information in such a way that the manager and operator of the loom are informed that one of the bearings 14, 17, 20, 24, 26, etc., must be replaced by a new one. It should be noted that the replacement limit to be displayed on the display screen 32 is set for each of the stages 14, 17, 20, 24, 26, etc., and that it can be set at any value which corresponds to a moment which precedes the actual end of the life of the bearings 14, 17, 20, 24, 26, etc., as required.
    While the loom is put into service in accordance with the specifications 2, the operating portion 30 of the controller 28 calculates the load F2 imposed on the bearings 14, 17, 20, 24, 26, etc., of the electronic device 1 of crowd formation based on the specifications 2 and on the current of the crowd formation engine 7 detected during the commissioning according to the specifications 2. Next, the operating portion 30 calculates the average load F m imposed on the stages 14, 17, 20, 24, 26, etc., using equation 2 via the application of the load Fi, the operating time Ti, the rotation speed Ni which is
    BE2017 / 5457 calculates in conjunction with specifications 1, and the load F2, the operating time T2 and the speed of rotation N2 which is calculated in conjunction with specifications 2. The operating portion 30 calculates the average rotation speed N of the crowd-forming motor 7 based on the rotation speeds of the crowd-forming motor 7 for the basic calculated duration, which are stored in the storage portion 29. From Specifically, the operating portion 30 calculates the average speed of rotation N based on the speed of rotation Ni for the operating time Ti with the load Fi and on the speed of rotation N2 for the operating time T2 with load F2. Based on the calculated average load F m imposed on the bearings 14, 17, 20, 24, 26, etc., and on the average rotation speed N of the crowd-forming motor 7, the operating portion 30 calculates the service life or the basic calculated service life of the bearings 14, 17, 20, 24, 26, etc., using equation 1. Then, the operating portion 30 compares the service life obtained from the bearings 14, 17, 20, 24, 26, etc., to the accumulated operating life of the loom since its initial commissioning (i.e. Ti + T2) to thereby determine and confirm the remaining service life bearings 14, 17, 20, 24, 26, etc.
    Subsequently, after the weaving loom has been put into service in accordance with the specifications 2, a fabric having different fabric specifications and requiring different settings of the weaving loom with respect to those of those of the specifications 12 must be woven of the same way as the fabric woven in accordance with the specifications 2. In the interest of the description, the specifications of the fabric and the settings of the loom to
    BE2017 / 5457 weaving for Ιαth fabric will be collectively designated by the expression "specifications n", and the loom continues the weaving operation in accordance with specifications 1, specifications 2, ... specifications n, in this order.
    While the loom is put into service in accordance with the specifications n, the operating portion 30 of the controller 28 calculates the load F n imposed on the bearings 14, 17, 20, 24, 26, etc., of the electronic device 1 of crowd formation based on the specifications n and on the current of the crowd formation engine 7 detected. Then, the operating portion 30 calculates the average load F m imposed on the stages 14, 17, 20, 24, 26, etc., using equation 2 via the application of the loads Fi, F2, ... F n , operating times Τι, T2, ... T n , and rotation speeds Ni, N2, ... N n . Based on the rotation speeds Ni, N2, ... N n of the shedding formation motor 7 for the operating times of the loom Τι, T2, ... T n , with the loads Fi, F2, ... F n imposed on the bearings 14, 17, 20, 24, 26, etc., respectively, which are stored in the storage portion 29, the operating portion 30 calculates the average rotation speed N of the crowd-forming engine 7. Based on the calculated average load F m imposed on the stages 14, 17, 20, 24, 26, etc., and on the average rotation speed N of the crowd-forming engine 7, the operating portion 30 calculates the basic service life or calculated duration of the steps 14, 17, 20, 24, 26, etc., using equation 1. Next, the operating portion 30 compares the calculated service life of the bearings 14, 17, 20, 24, 26, etc., to the accumulated operating time of the weaving loom since its initial commissioning (i.e. Τι + T2 +. .. + Tn) so to determine and
    BE2017 / 5457 confirm Ια remaining life of bearings 14, 17, 20, 24, 26, etc.
    In order to increase the production and the stability of the weaving operation, a certain number of settings of the woven loom, such as for example the target speed of rotation of the weaving loom can be modified in certain specifications. Such a partial modification of the settings of the loom, which is not accompanied by a modification of the specifications of the fabric, also affects or influences the value of the load imposed on the bearings 14, 17, 20, 24, 26, etc. In accordance with the present embodiment, when a certain number of modifications are made to the settings of the loom forming part of particular specifications, the operating portion 30 of the controller 28 calculates the average load F m imposed on the bearings 14, 17 , 20, 24, 26, etc., based on the specifications of the fabric, the settings of the loom and the current of the crowd-forming motor 7 which are used for a period of time during from which the loom was operated according to the modified specifications. Based on the average load obtained F m imposed on the bearings 14, 17, 20, 24, 26, etc., and on the average speed of rotation N of the shedding motor 7 which is obtained in connection with the modified specifications, the operating portion 30 calculates the service life or the basic calculated service life of the bearings 14, 17, 20, 24, 26, etc., and compares the service life obtained from the bearings 14, 17, 20 , 24, 26, etc., to the accumulated operating time of the weaving loom from the initial start of the commissioning of the weaving loom to thereby determine and confirm the remaining life of the bearings 14, 17, 20 , 24, 26, etc.
    BE2017 / 5457
    In accordance with this embodiment, the loads imposed on the landings 14, 17, 20, 24, 26, etc. of the electronic shedding apparatus 1 are calculated based on fabric specifications for a fabric which is to be woven and on the settings of the loom and the electronic shedding apparatus 1 required for weaving the fabric, and then the lifetimes of the bearings 14, 17, 20, 24 , 26, etc., are calculated taking into account the variations in the loads imposed on the bearings 14, 17, 20, 24, 26, etc. Consequently, correct and precise lifetimes of the bearings 14, 17, 20, 24, 26, etc. are calculated and determined, in such a way as to obtain adequate monitoring and management of the bearings 14, 17, 20, 24, 26, etc. In the electronic crowd training apparatus in which the space for mounting the drive systems for the various heald frames is very limited, it is difficult to provide sensors for detecting the loads imposed on the bearings of the drive systems. 'training. However, in an electronic shedding apparatus 1 of the present embodiment in which the loads imposed on the respective landings 14, 17, 20, 24, 26, etc., are calculated using the specifications of the fabric and the settings of the weaving loom which are entered and incorporated into the storage portion 29 before the start of commissioning of the weaving loom, there is no need to install sensors such as a the acceleration to detect the acceleration of the bearings 14, 17, 20, 24, 26, etc., and a load torque sensor to detect the load torque of the bearings 14, 17, 20, 24, 26, etc. Consequently, the loads imposed on the bearings 14, 17, 20, 24, 26, etc., are determined correctly and precisely without complicating the structure of the loom by
    BE2017 / 5457 the addition of sensors of this type.
    In the event that any of the bearings used for the driving shaft of the shedding motor, any of the support shafts and the connection of any of the rotating bodies, such as an eccentric shaft of the eccentric wheel, is damaged or broken due to aging or the end of its service life, the electronic crowd-forming device can be switched off, which results in a reduction in the rate of production of the loom. In addition, such degradation or such a break in a bearing is liable to damage the electronic crowd training device itself, giving rise to a replacement of the electronic crowd training device in its entirety. However, in accordance with this embodiment, the bearing lifetimes are calculated and are determined correctly and precisely throughout the operating time (i.e. the operating time accumulated) of the loom or of the electronic crowd-training apparatus, in such a way that the electronic crowd-training apparatus can be constructed on the basis of a simple structure which makes it possible to take the lead in concerning the degradation or breakage of the bearings.
    In accordance with this embodiment, the replacement limit is set for each of the stages 14, 17, 20, 24, 26, etc., to a value which corresponds to a moment preceding the actual end of the duration of life of the bearings 14, 17, 20, 24, 26, etc., from which the bearing becomes unusable. Consequently, when any of the steps 14, 17, 20, 24, 26,
    BE2017 / 5457 etc., has reached its limits for replacement on the basis of a calculation, information indicating that the relevant bearing must be replaced is displayed on the display screen 32 in such a way that the operator and the installation manager can easily find out when the bearings are replaced at an earlier time.
    The method and device for monitoring and managing the bearings used in the shedding apparatus in a weaving loom of the present invention are not limited to the embodiment indicated above and can be modified in different ways while respecting the spirit and the framework of the present invention, as indicated below:
    (1) the calculation of the service lives of the bearings may be carried out either periodically or on the basis of requirements, including calculations which are carried out after the intervention of any modification made to the specifications of the fabric and / or to the settings of the loom;
    (2) in accordance with the embodiment indicated above, the load imposed on the bearings of the reduction gear assembly and the bearings of the shedding motor 7 is calculated or is estimated based on detection signals sent by the rotation detector 9 and by the current detector 10. In accordance with the present invention, the determination of the load imposed on the bearings can nevertheless be carried out experimentally and empirically based on the data of the specifications of the fabric and on them
    BE2017 / 5457 settings of the loom;
    (3) according to the embodiment indicated above, the speed of rotation of the shedding motor 7 5 is measured or is detected by a rotation detector 9. However, one can deduce the speed of rotation of the training motor of the crowd 7 of a calculation in which the speed of rotation or the number of rotations of the loom is used.
    BE2017 / 5457
    权利要求:
    Claims (4)
    [1]
    1. Method for monitoring bearings of a crowd forming apparatus (1) of a loom, the crowd forming apparatus (1) including a number of drive systems each associated with a heald frame (3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H) of the loom and each including a crowd formation engine (7) designed to drive the heald frames (3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H) independently of each other, and a linkage mechanism (27) which connects the crowd forming motor (7) to the heald frames (3A, 3B, 3C, 3D , 3E, 3F, 3G, 3H), each drive system having at least one bearing (14, 17, 20, 24, 26) which is connected to one end of the link mechanism (27), characterized in that the process includes:
    determining a load on the bearings (14, 17, 20, 24, 26) of the drive system based on weaving specifications of a fabric to be woven and on settings of the loom specified for weaving cloth;
    determining a speed of rotation of the shedding motor (7) when weaving the fabric with the determined load based on the specifications and on the settings of the loom;
    determine an average load imposed on the bearings (14, 17, 20, 24, 26) based on the determined load imposed on the bearings (14, 17, 20, 24, 26), on the determined rotation speed of the training motor of the crowd (7), and over a period during which the loom has been put into service with the determined load imposed on the bearings (14, 17, 20, 24, 26);
    determining an average speed of rotation of the crowd forming engine (7) during a period accumulated during
    BE2017 / 5457 from which the weaving loom was put into service from an initial start-up the putting into service of the weaving loom; and determine a service life of the bearings (14, 17, 20, 24, 26) based on the determined average load imposed on the bearings (14, 17, 20, 24, 26) and on the determined average speed of rotation of the crowd formation engine (7); in which the determinations of the load imposed on the bearings (14, 17, 20, 24, 26), of the speed of rotation of the crowd-forming motor (7), of the average load imposed on the bearings (14, 17, 20, 24, 26), the average speed of the shedding motor (7) and the service life of the bearings (14, 17, 20, 24, 26) are performed after the initial start of the commissioning of the loom and each subsequent start of the commissioning of the loom, which results from a modification which has been made to at least one element chosen from the specifications of the fabric and the settings of the loom to weave.
    [2]
    2. Method for monitoring the bearings of the shedding apparatus (1) of the weaving loom according to claim 1, characterized in that the method includes displaying the determined service life of the bearings (14, 17, 20, 24, 26) on a display screen (32).
    [3]
    3. Device for monitoring the bearings of a shedding machine (1) of a loom, the shedding machine (1) including a number of drive systems each associated with a heald frame (3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H) of the loom and each one having a crowd formation engine (7) designed to drive the heald frames
    BE2017 / 5457 (3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H) independently of each other, and a connection mechanism (27) which connects the crowd forming motor (7) to the heald frames (3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H), each drive system having at least one bearing (14, 17, 20, 24, 26) which is connected to one end of the link mechanism ( 27), characterized in that the device comprises:
    a controller (28) having a storage portion (29) designed to store therein various data including specifications for weaving a fabric to be woven and settings of the loom specified for weaving the fabric, and an operating portion (30) adapted to perform calculations;
    a data input portion (31) designed in such a way that different data including the weaving specifications and the settings of the loom are entered there and are stored in the storage portion (29);
    a rotation detector (9) adapted to detect a rotation speed of the crowd-forming motor (7) and to send signals providing indications concerning the detected rotation speed of the crowd-forming motor (7) to the controller (28) in such a way that the signals sent are stored in the storage portion (29); wherein the calculations made by the operating portion (30) include calculations:
    of a load imposed on the bearings (14, 17, 20, 24, 26) of the drive system based on weaving specifications of a fabric to be woven and on settings of the loom specified for the weaving of the fabric;
    a speed of rotation of the shedding motor (7) during the weaving of the fabric with the load determined by
    BE2017 / 5457 based on the specifications and on the settings of the loom;
    of an average load imposed on the bearings (14, 17, 20, 24,
    26) based on the determined load imposed on the bearings (14, 17, 20, 24, 26), on the determined rotation speed of the crowd-forming motor (7) and on a duration during which the trade weaving was put into service with the determined load imposed on the bearings (14, 17, 20, 24, 26);
    an average speed of rotation of the shedding motor (7) during an accumulated period during which the loom has been put into service from an initial start of the putting into service of the weaving loom ; and a service life of the bearings (14, 17, 20, 24, 26) based on the determined average load imposed on the bearings (14, 17, 20, 24, 26) and on the determined average speed of rotation the crowd forming engine (7); in which the calculations of the load imposed on the bearings (14, 17, 20, 24, 26), of the speed of rotation of the crowd-forming motor (7), of the average load imposed on the bearings (14, 17, 20, 24, 26), the average speed of the shedding motor (7) and the service life of the bearings (14, 17, 20, 24, 26) are performed after the initial start of the commissioning of the loom and each subsequent start of the commissioning of the loom, which results from a modification which has been made to at least one element chosen from the specifications of the fabric and the settings of the loom to weave.
    [4]
    4. Device for monitoring the bearings of the shedding apparatus (1) of the weaving loom according to claim 3, characterized in that the device includes a display screen
    BE2017 / 5457 (32) designed to display the service life of the bearings (14, 17, 20, 24, 26) calculated by the operating portion (30).
    BE2017 / 5457
    BE2017 / 5457
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    同族专利:
    公开号 | 公开日
    FR3053366B1|2021-01-22|
    BE1024844A1|2018-07-16|
    JP6593260B2|2019-10-23|
    CN107557946B|2020-04-14|
    JP2018003932A|2018-01-11|
    CN107557946A|2018-01-09|
    FR3053366A1|2018-01-05|
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    法律状态:
    2018-10-03| FG| Patent granted|Effective date: 20180724 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2016129880A|JP6593260B2|2016-06-30|2016-06-30|Bearing management method and management device for loom opening device|
    JP2016129880|2016-06-30|
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