• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A measuring device for measuring dynamometric characteristics of elongated textile samples such as yarns, threads, ribbons and the like, such a device comprises a first clamp (12), a second clamp which is substantially aligned and relatively mobile with respect to the first clamp ( 12) along a first translation direction (A), wherein each of the first terminal (12) and the second terminal comprises a fixed jaw (14) and a movable jaw (15) relative to the respective fixed jaw along a second direction of translation (B) substantially orthogonal to the first direction of translation (A) and in which the movable jaw (15) is movable between a rest position, in which it is spaced with respect to the respective fixed jaw (14), and a working position , in which it is brought closer to the respective fixed jaw (14) to clamp a respective portion of an elongated textile sample against it, the first detection means of the fo that they are coupled to the first terminal (12) to detect the traction force applied to the textile sample, and second displacement detection means to detect the relative displacement of the second terminal with respect to the first terminal (12), the device being characterized by the fact that at least one of the fixed jaw (14, 16) and the movable jaw (15) of at least one of the first clamp (12) and the second clamp (13) comprises a base body (18, 19) to which it is coupled a clamping body (26) provided with a clamping surface which is faced to a corresponding surface of the other respective fixed or movable jaw to clamp a respective textile sample portion against it, in which this clamping body (26) is coupled to the respective base body (18, 19) so as to be able to oscillate around at least two different axes.
    公开号:CH711699A2
    申请号:CH01399/16
    申请日:2016-10-19
    公开日:2017-04-28
    发明作者:Righettini Paolo；Ginammi Andrea
    申请人:Mesdan Spa；
    IPC主号:
    专利说明:

    Description [0001] The present invention relates to a measuring device for measuring dynamometric characteristics of elongated textile samples such as yarns, threads, ribbons, wicks and the like.
    [0002] The quality control of a yarn is of fundamental importance to control both the production processes and the subsequent processing processes. The quality controls are aimed at determining various structural or physical-mechanical characteristics of the yarns including, in particular, the dynamometric characteristics such as tensile elongation at break, tensile strength (ie the maximum tensile strength ), the elastic tensile modulus and the relative tension / deformation curve.
    [0003] For this purpose, automatic devices for performing dynamometric tests have long been known which generally consist of a pair of clamps which are vertically arranged one on the other and of which the upper clamp is fixed and the clamp lower is movable in translation towards and away from the fixed terminal.
    [0004] The fixed clamp is connected to means for detecting the traction force which is applied to the textile sample under test by means of the movable clamp, which detecting means generally consist of a load cell. In known devices the fixed terminal is rigidly connected to the load cell. In these, moreover, the movable clamp is operated in sliding with respect to the fixed clamp by means of a screw-nut (screw-nut) recirculating ball coupling. In particular, the movable clamp is fixed on a carriage which is slidably mounted along a rectilinear guide parallel to the sliding direction with respect to the fixed clamp. This carriage is fixed to a nut screw in which a screw is coupled parallel to the sliding direction of the movable clamp with respect to the fixed clamp and driven in rotation by an electric motor through transmission means of the type, for example, belt type. The position of the movable clamp is indirectly detected by the pitch of the screw and the number of revolutions of the motor. In the known devices, moreover, each of the two clamps comprises a fixed jaw and a jaw movable towards and away from the respective fixed jaw in order to clamp and release a corresponding portion of the textile sample under test.
    [0005] These known types of device have some drawbacks.
    [0006] A first drawback is constituted by the fact that the clamping surfaces of the jaws of each clamp, whether they are made of steel or are provided with inserts of elastomeric material, due to wear and / or deformation, are not capable of firmly and safely tighten the corresponding portion of the textile sample, thus allowing slippage of the latter which can lead to measurement errors. If, in addition, the clamping surfaces and of them, in particular, the clamping surface of the movable jaw is made of a membrane of elastomeric material, this must have non-negligible dimensions to ensure adequate tightening forces, which, therefore, translates into non-negligible overall dimensions.
    [0007] A second drawback is constituted by the fact that the rigid coupling of the fixed clamp to the load cell introduces an unsteadiness in the system and constitutes a pre-load of the cell itself which negatively influence the force measurements. During the execution of each test, moreover, the path followed by the sample under test could be subjected to deviations not predictable with respect to the vertical, these deviations originate undesirable force components which are in any case detected by the load cell.
    [0008] Yet another drawback is constituted by the fact that the screw-and-nut screw movement of the clamp movable with respect to the fixed clamp requires the use of expensive mechanical components and allows to obtain the position of the movable clamp only indirectly. The object of the present invention is to overcome the drawbacks of the prior art.
    [0009] Within the scope of this general purpose, a particular object of the present invention is to provide a measuring device for measuring dynamometric characteristics of elongated textile samples such as yarns, threads, ribbons, wicks and the like, which allows to firmly and safely tighten the textile sample under test, avoiding unwanted slippage and independently of the position of the textile sample with respect to the jaws of the clamps.
    [0010] Another object of the present invention is to provide a measuring device for measuring dynamometric characteristics of elongated textile samples of the type of yarns, threads, ribbons, wicks and the like which allows to obtain more precise and accurate force measurements and independent of the more or less centered position that the textile sample has with respect to the clamp jaws.
    [0011] Yet another object of the present invention is to provide a measuring device for measuring dynamometric characteristics of elongated textile samples of the type of yarns, threads, ribbons, wicks and the like which allows to move the movable clamp relative to that fixed and to detect its position in a simple and precise way.
    [0012] Yet another object of the present invention is to provide a measuring device for measuring dynamometric characteristics of elongated textile samples of the type of yarns, threads, ribbons, wicks and the like, structurally simple, functional and of low cost.
    [0013] These and other objects are attained by a measuring device for measuring dynamometric characteristics of elongated textile samples such as yarns, threads, ribbons, wicks and the like, as defined in claim 1.
    [0014] Further characteristics are defined in the dependent claims.
    [0015] The characteristics and advantages of a measuring device for measuring dynamometrical characteristics of elongated textile samples such as yarns, threads, ribbons, wicks and the like, according to the present invention, will become more evident from the following description, by way of example and non-limiting, referring to the attached schematic drawings in which: fig. 1 is a front elevation view of a device according to the present invention applied to a modular automatic apparatus for determining a plurality of characteristics of textile samples; fig. 2 and 3 are axonometric views, respectively from the front side and from the rear side, of the first clamp of the device according to the present invention; fig. 4, 5 and 6 show the first clamp of the device according to the present invention respectively in front elevation, rear elevation and side elevation; fig. 7 is a section of fig. 4 according to plan VII-VII; fig. 7A shows on a larger scale a detail of fig. 7; fig. 8 is a section of fig. 5 according to the VIII-VIII plan; fig. 8A shows on a larger scale a detail of fig. 8; fig. 9 is a section of fig. 6 according to plan IX — IX; fig. 10 is a front elevation view of a detail of the device according to the present invention comprising the first and second clamp; fig. 11 and 12 are sections of fig. 10 respectively according to plans XI-XI and XII — XII; fig. 13 and 14 are two isometric views of a detail of the device according to the present invention relating to the moving means and of the second detection means for detecting the position of the second terminal.
    [0016] With particular reference to the annexed figures, the reference numeral 10 generally designates a measuring device for measuring dynamometric characteristics of elongated textile samples such as yarns, threads, ribbons, wicks and the like.
    [0017] In the following description reference will be made to the device 10 in its usual position of use with reference to a Cartesian system XYZ in which the XY plane indicates a horizontal plane or in any case parallel to the ground supporting the device 10 and the Z axis l vertical axis, in which the ZY plane is parallel to the directions along which the relative translation motions take place between the two clamps and the jaws of each clamp as described below.
    [0018] The device 10 comprises a housing 11 resting on the ground and containing the structural and functional modules necessary for its operation and which are not illustrated and described in detail except for what is relevant to the understanding of the present invention.
    [0019] The device 10 comprises a first terminal 12 and a second terminal 13 which are accessible from the front face of the housing 11 (parallel to the plane ZY). The second terminal 13 is aligned with the first terminal 12 and is made movable relative to it along a first direction of translation A. The second terminal 13 is therefore movable with rectilinear motion along the first translation direction A towards and away from the first terminal 12 by means of movement means 46 later described with reference to figs. 13 and 14.
    [0020] Considering the device 10 in its usual use configuration, the first direction of translation A is vertical (parallel to the axis Z) and the first terminal 12 is placed above (ie at a greater height than the horizontal plane XY) with respect to at the second terminal 13. The first terminal 12 is fixed with respect to the second terminal 13; the first terminal 12, i.e. does not perform translational motions along the first translation direction A with respect to the second terminal 13.
    [0021] The first terminal 12 and the second terminal 13 each comprise a fixed jaw and a movable jaw relative to the respective fixed jaw along a second direction of translation B substantially orthogonal to the first direction of translation A. The movable jaw is movable between a position of rest, in which it is spaced from the respective fixed jaw, and a working position, in which it is brought closer to the respective fixed jaw to clamp a respective portion of an elongated textile sample, not shown in the accompanying figures, against it.
    [0022] The fixed jaw and the movable jaw of the first terminal 12 and of the second terminal 13 are indicated respectively with the reference numbers 14 and 15 and with 16 and 17.
    [0023] The first terminal 12 is then coupled to first detection means 47 able to detect the traction force applied to the textile sample under test by means of the second terminal 13. Second detection means 48 are provided for detecting the displacement of the second terminal 13 with respect to the first terminal 12 as described below with reference to figs. 13 and 14.
    [0024] According to a first aspect of the present invention at least one of the fixed jaw 14, 16 and the movable jaw 15, 17 of at least one of the first clamp 12 and the second clamp 13 comprises a base body to which a body is coupled clamping provided with a clamping surface which is faced to a corresponding surface of the other respective jaw to clamp the respective textile sample portion against it, in which the clamping body is coupled to the base body so as to be able to perform oscillations. with respect to at least two oscillation axes which are different from each other and advantageously orthogonal to each other. In particular, the clamping body is coupled to the base body through a spherical joint.
    [0025] In the embodiment shown in the accompanying figures, the movable jaw 15, 17 of both the first terminal 12 and the second terminal 13 has a structure such as the one indicated above. In the following, therefore, the structure of the first terminal 12 is described in detail, the structure of the second terminal 13, limited to this first aspect of the present invention (i.e. the only conformation of the two fixed and movable jaws), being quite similar.
    [0026] The fixed jaw 14 and the movable jaw 15 each comprise a respective base body 18, 19 which is fixed, for example by means of screws 20, to a support plate 21 which, unless oscillations are made possible by junctions as described below, is generally parallel to the ZY plane.
    [0027] The base body 18,19 is not necessarily constituted by a single body, being able to be constituted, for mounting requirements, by several elements connected to each other.
    [0028] The respective clamping body 22 is fixed to the base body 18 of the fixed jaw 14, which has a clamping surface 22a facing the movable jaw 15. The clamping body 22 is rigidly constrained both to translation and to rotation to the base body 18, for example through the threaded stem of a screw 23 which is inserted in a through hole 24 formed in the base body 18 and engages in a blind threaded hole 25 formed in the clamping body 22 and accessible from the surface of it opposite to the clamping surface 22a.
    [0029] The respective clamping body 26 is coupled to the base body 19 of the movable jaw 15 which has a clamping surface 26a facing the clamping surface 22a of the clamping body 22 of the fixed jaw 14.
    [0030] The clamping body 26 is coupled to the base body 19 so as to be able to perform oscillations at least with respect to two axes which are different from each other and advantageously orthogonal and, advantageously, by means of a spherical joint.
    [0031] In greater detail, the clamping body 26 must be able to translate along the second translational direction B towards and away from the clamping body 22 of the fixed jaw 14; to this end, therefore, a linear actuator 27 is provided which is coupled to the clamping body 26 to actuate its translational movement in both directions along the second translation direction B.
    [0032] The clamping body 26 is coupled to the movable element of the linear actuator 27 or to the connecting element to the linear actuator 27 through a spherical joint 28.
    [0033] With particular reference to the embodiment shown in the accompanying figures, the linear actuator 27 is of the type with a cylinder 29 and a double-acting pneumatic piston 30. The cylinder 29 is defined by a cylindrical seat formed in the base body 19 and inside which the piston 30 is slidably mounted along the second direction of translation B; the compressed air is fed into the cylinder 29 by means of fittings 31 supported by the plate 21.
    [0034] The base body 19 slidably supports a stem 32 which extends parallel to the second translation direction B; the stem 32 has an end fixed to the piston 30 and the opposite end which faces the fixed jaw 14 and to which the clamping body 26 is coupled through the ball joint 28.
    [0035] The clamping body 26 can therefore perform oscillations with respect to at least two axes distinct from each other in such a way that its clamping surface 26a can rest on the clamping surface 22a of the clamping body 22 of the fixed jaw 14 "adapting" and "conforming" to it so as to firmly clamp the corresponding portion of the textile sample, regardless of the position that this sample has with respect to the two jaws of the same clamp.
    [0036] It should also be noted in this case that the clamping bodies 22, 26 are not necessarily constituted by a single body, being able to be constituted, in particular for mounting requirements, by several elements rigidly connected to each other.
    [0037] With reference to figs 7 and 7A, the base body 19 comprises a first element 19 'and a second element 19 "fixed to one another; in the first element 19' the cylindrical seat is defined which defines the cylinder 29, it has a blind bottom at one end. which defines one of the two bases of the cylinder 29 and is closed at the opposite end by a plug 33 which is clamped between the first element 19 'and the second element 19 "and which defines the other base of the cylinder 29.
    [0038] The piston 30 is mounted inside the cylinder 29 which, in practice, consists of a gasket. The piston 30 is fixed to an end of the stem 32. The stem 32 is slidably supported along the second direction of translation B by the cap 33 with interposition of sealing gaskets 34.
    [0039] The end of the stem 32 opposite the piston 30 protrudes from the cap 33 towards the fixed jaw 14 and to it is mounted, through the ball joint 28, the clamping body 26. The clamping body 26 is composed of several elements fastened together: a first support element 26 'which is articulated to the stem 32 through the ball joint 28, a second cap element 26 "and a third" pellet "element 26" which defines the surface of tightening 26a. The clamping body 26 is slidably guided in a corresponding seat formed in the base body 19 and, in particular, in the second element 19 "thereof.
    [0040] As already indicated above, limited to this first aspect of the present invention, the structure of the fixed jaw 16 and of the movable jaw 17 of the second terminal 13 is similar to that described above with reference to the first terminal 12.
    [0041] As can be easily understood by those skilled in the art, the pair of clamps is of an interchangeable type depending on different types of textile samples.
    [0042] According to a second aspect of the present invention, the first terminal 12 is coupled to the first detection means 47 for detecting the force so as to be able to perform oscillations at least around a first axis C and, preferably, also around a second axis D axis different from the first C axis, so as to make the measurement of the detected force as independent as possible from pre-loads and frictions and from the position of the textile sample more or less centered with respect to the jaws of the two clamps. As will appear more clearly from the following description, the first terminal 12 is coupled to the first detection means 47 with a coupling shaped so as to eliminate hyperstaticity.
    [0043] The first axis C is advantageously substantially orthogonal to a plane parallel to both the first direction of traction A and the second direction of traction B; with reference to the attached figures, the first axis C is substantially horizontal and parallel to the axis X, ie substantially perpendicular to the vertical plane ZY.
    [0044] The second axis D, on the other hand, is parallel to the second translation direction B (axis Y).
    [0045] In greater detail (Figures 11 and 12), the first detection means 47 (ie sensors or transducers) comprise an elongated body 35 (in practice formed by a rod) which is arranged along a direction orthogonal to the plane ZY parallel to the first translation direction A and to the second translation direction B and which is supported in a box-like body 36 fixed to the housing 11 or in any case to the support frame of the device 10 through at least one load cell 37 and, advantageously , by two load cells 37, 38. The two load cells 37 and 38 support the opposite ends of the elongated body 35 and are advantageously of the "S" type.
    [0046] The first terminal 12 is coupled to an end of the elongated body 35 so as to be able to perform oscillations both around the first axis C and around the second axis D. The first axis C is parallel or coaxial to the elongated body 35.
    [0047] With reference to the embodiment shown in the attached figures, the plate 21 is rotatably supported, by means of bearings 40, around a first pin 39 which is fixed to an end of the elongated body 35 and which is substantially coaxial with the elongated body 35. The first pin 39 defines the first axis C.
    [0048] In particular, the plate 21 is mounted on a support bracket 41 which is rotatably articulated around the first pin 39 through the bearings 40; the support bracket 41 is arranged at the rear face of the plate 21, ie of the face of the plate 21 opposite to that in which the fixed jaw 14 and the movable jaw 15 are mounted.
    [0049] The plate 21 is mounted on the support bracket 41 so as to be able to perform oscillations around the second axis D.
    [0050] For this purpose the bracket 41 comprises two arms 41 a and 41 b which extend symmetrically from the central portion 41 c of it which is articulated to the first pin 39.
    [0051] Each of the two arms 41 a and 41 b supports a respective second pin 42a and 42b which extends parallel to the first pin 39 and which is inserted with play into a corresponding slot 43a and 43b formed passing through the plate 21.
    [0052] The two second pins 42a and 42b project with one end thereof from the front face of the plate 21. The ends of the two second pins 42a and 42b which project from the front face of the plate 21 are coupled through a respective ball joint 44a and 44b respectively to the base body 18 of the fixed jaw 14 and to the base body 19 of the movable jaw 15.
    [0053] A counterweight 45 is fixed to the plate 21 at its opposite side to that which, through the support bracket 41, is articulated to the first pin 39; the counterweight 45 is vertically aligned with the first pin 39.
    [0054] In a possible alternative embodiment not shown in the accompanying figures, the plate 21 is coupled to the first sensing means 47 and, in particular, to the elongated body 35 of them through a spherical joint.
    [0055] According to a further aspect of the present invention, the movement means 46 comprise a belt 49 closed on itself in a ring and wound around a pulley made driving and to an idle pulley and to a stretch of which a slide 50 is fastened which supports the second terminal 13. In greater detail and with reference to figs. 13 and 14, the belt 49 is closed on itself in a ring and is wound around a pair of pulleys of which only the supports are shown: a first support 51 which supports the pulley made driving through an electric gearmotor 52 and a second support 53 which supports the idle pulley.
    [0056] The slide 50 on which the second terminal 13 is mounted is fixed to a portion of the branch of the belt 49. The slide 50 is slidably mounted along a rectilinear guide 54 advantageously of the recirculating ball type. A transmission chain 55 accompanies the sliding of the slide 50.
    [0057] The second detection means 48 of the position of the second terminal 13 comprise a position transducer 56 fixed to the slide 50. Advantageously, the transducer or position sensor 56 is of the magnetic type and cooperates with a magnetic band 57 fixed to a side of the rectilinear guide 54. There are then two end-of-travel transducers 58 and 59 of the sliding of the slide 50.
    [0058] The device is completed with 10 structural and functional modules, such as, for example, those for moving the movable jaws, and for the automated control and management of the operation of the entire device 10, which are not illustrated and described in detail as they are immediately understandable type for the person skilled in the art.
    [0059] Lafig. 1 shows the device 10 integrated as a measurement module in a modular equipment 100 for the automatic execution of quality control tests of elongated textile samples of the type of yarns, threads, strips and the like.
    [0060] The apparatus 100 is the object of a simultaneous patent application in the name of the same owner and which is referred to here in its entirety.
    [0061] The apparatus 100 comprises a housing 101 to which are associated: - a loading module 102 of the ends of a plurality of textile samples to be tested, each of which is wrapped in a corresponding package (spool, reel, spool or the like) supply supported by a creel associable with the apparatus 100 and not shown, - at least one first measurement module 103 for measuring at least a first structural feature of the textile samples, - at least one second measurement module 104 for measuring at least one second physical-mechanical characteristic of the textile samples, - manipulating means 105 for manipulating the textile samples between the loading module 102, the first measuring module 103 and the second measuring module 104, - a central unit of programmable type (not shown) for the management and control of the loading module 102, of the first a first measuring module 103, of the the at least one second measuring module 104 and the manipulating means 105 and for processing the measurements carried out by the at least one first measuring module 103 and by the at least one second measuring module 104, in which the at least one first module of measurement 103 and the at least one second measurement module 104 are able to operate successively or simultaneously on one or two different textile samples.
    The apparatus 100 may further comprise at least one third measurement module 106 for the measurement of a further structural feature of the textile samples and / or a fourth measurement module 107 for measuring a characteristic of textile samples of the type of manually inserted ribbons or wicks in it.
    [0063] The first measurement module 103 is able to measure at least one structural characteristic of the textile samples chosen between the regularity of the linear mass (titer) and the hairiness, both advantageously. The first measurement module 103, therefore, comprises a hairiness measuring device 130 and a device for measuring the regularity (regularity of the linear mass) 131 which are arranged one above the other and substantially aligned with one another or in any case aligned along a sliding path P of the textile sample and dragging means 132 aligned or in any case aligned with the path P and which are arranged below the hairiness measuring device 130 and of the regularity measuring device 131 and which are configured to make scroll the textile sample along the path P.
    [0064] The second measurement module 104 is able to measure at least one physical-mechanical characteristic of the textile samples and, in particular, a dynamometric characteristic of the type of elongation at break by traction, the tensile strength (ie the maximum load of tensile failure), of the elastic modulus, of the toughness and, in the embodiment shown in figure 1, it consists of a measuring device 10 according to the present invention.
    [0065] The third measurement module 106 is adapted to measure a physical characteristic of the type of linear mass (title) of the textile samples. The third measurement module 106 is therefore constituted by a so-called titrator.
    [0066] The first measurement module 103 and the possible third and fourth measurement modules 106 and 107 are not described in detail being of a type known to the person skilled in the art.
    [0067] In completely general terms, the first measurement module 103 comprises a hairiness measuring device 130 as described for example in the patent IT 1 413 638 and a regularity measuring device 131 of the capacitive type for example.
    [0068] In order to align the inlet opening of the hairiness measuring device 130 with that of the regularity measurement device 131, the first is supported by a movable slide with a command along a horizontal direction orthogonal to the path P.
    [0069] The driving means 132 comprise a pair of rollers rotating in opposite directions and at controlled speeds and between which the textile sample under test is dragged. These same driving means 132 are supported by a respective movable slide with a command along a horizontal direction orthogonal to the path P so that they can be aligned with the inlet opening of the hairiness measuring device 130 and keep the path P substantially straight.
    [0070] The third measuring module 106 comprises, in general terms, its own driving means 161 of the textile sample similar to the driving means 132, cutting means 162 of a section of the textile sample whose length is indirectly determined by motion measurements driving means 161, brake means 163 of the textile sample, suction means 164 of the section of cut sample and weighing means housed inside the housing 101. The fourth measuring module 107 is of the type of a capacitive regulator of known type.
    [0071] The third measuring module 106 and the first measuring module 103 are aligned one above the other in a first measurement zone M1.
    [0072] The second measuring module 104 (i.e. the device 10) is arranged in a second measurement zone M2 distinct from the first measurement zone M1. The possible fourth measurement module 107 is arranged in a third measurement zone M3 different from the first and second measurement zones M1 and M2 and not reached by the manipulator means 105. It should be noted that the fourth measurement module 107 can operate simultaneously and parallel to the first measuring module 103 and the second measuring module 104.
    [0073] The manipulator means 105 are movable between the loading module 102, the first measurement zone M1 and the second measurement zone M2; they are designed to perform movements of translation and / or rotation around the three XYZ axes.
    [0074] In the embodiment it represents, the manipulator means 105 comprise a quadrilateral articulated structure movable in the ZY plane and which has a cylindrical joint 150 coupled to non-visible actuating means and a cylindrical joint 151 opposite to the first and provided with a head of manipulation 152 rotatable around the axis X and provided with pincer means for gripping and releasing the textile samples.
    [0075] The manipulator means 105 are not further described since they are of a type immediately understood by the person skilled in the art.
    [0076] The loading module 102 comprises a plurality of gripping members of the type of pincer members 120 for locking the inlet ends of a corresponding plurality of textile samples to be tested, each of which is wrapped in a corresponding package supported by a creel not shown.
    [0077] The gripper members 120 are aligned along an advantageously vertical loading direction (i.e. parallel to the axis Z) and are individually movable between a locking position and an unlocking position of the inlet end of a respective textile sample.
    [0078] Furthermore, the loading module 102 comprises one or more, advantageously two, carriages 121, each of which is individually movable in translation in both directions along a direction parallel to the loading direction so as to be able to selectively align to one of the gripper organs 120.
    [0079] Each carriage 121 is provided with at least a first support body 122 which is arranged at the side of the pincer members 120 facing the measurement modules and which supports at least one operating group selected from a cutting unit, a group brake, a suction unit and a guide-return unit for a textile sample. Furthermore, each carriage 121 is advantageously provided with a second support body 123 which is arranged at the side of the gripper members 120 facing the feed (creel) of the textile samples and which supports at least one operating group selected from a group. brake and a group for guiding and returning the textile sample. Each carriage 121 is further provided with actuator means for actuating the gripper members between their locking position and their unlocking position.
    [0080] Each carriage 121 is provided with its own motor means and is connected to the central control and management unit.
    [0081] Each module of the apparatus 100 is equipped with its own microprocessor connected to the central control and management unit, this makes the apparatus 100 of modular and modular type according to different needs.
    [0082] The apparatus 100 is not further described and illustrated here.
    [0083] It should be noted that the conformation of the jaws of the first clamp and / or of the second clamp as described above and as shown in the attached figures and, in particular, the "oscillating" coupling of the clamping body of at least one of the fixed jaw and the movable jaw of at least one of the two clamps, can also be adopted in devices in which the fixed clamp is coupled to the first detection means for detecting the traction force with coupling means different from those as described above and as shown in the attached figures and vice versa.
    [0084] These two aspects of the present invention, that is, although operating in a synergic manner for the purpose of obtaining precise measurements independent of the position of the wire and / or any frictions, can also be adopted individually. Thus, for example, the first fixed clamp can be coupled to the first traction force detecting means so as to oscillate around two different oscillation axes, regardless of how the fixed and movable jaws of it are made and, in particular, regardless of how the clamping body of the movable jaw of it is made.
    [0085] Similarly, the configuration of the means for moving the second terminal or movable terminal and the second means for detecting its position as described above and as shown in the accompanying figures can be adopted independently of the configuration of the first terminal and of the second terminal or of how the first (fixed) terminal is coupled to the first sensing means for detecting the traction force.
    权利要求:
    Claims (16)
    [1]
    1. Measuring device (10) for measuring dynamometric characteristics of elongated textile samples of the type of yarns, threads, ribbons and the like, in which said device comprises: - a first clamp (12), - a second clamp (13) which is substantially aligned and relatively mobile with respect to said first terminal (12) along a first direction of translation (A), wherein each of said first terminal (12) and said second terminal (13) comprises a fixed jaw (14 , 16) and a movable jaw (15, 17) relative to the respective said fixed jaw along a second translation direction (B) substantially orthogonal to said first translation direction (A), wherein said movable jaw (15, 17) is mobile between a rest position, in which it is spaced with respect to said respective fixed jaw (14, 16), and a working position, in which it is brought closer to said respective fixed jaw (14, 16) to clamp against it a respective a portion of an elongated textile sample, - first force detection means (47) which are coupled to said first clamp (12) to detect the traction force applied to said textile sample, and second movement detection means to detect the relative displacement of said second terminal (13) with respect to said first terminal (12), characterized in that at least one of said fixed jaw (14, 16) and said movable jaw (15, 17) of at least one of said first clamp (12) and of said second clamp (13) comprises: - a base body (18,19) to which a clamping body (22,26) is provided, provided with a clamping surface (22a, 26a) which is faced with a corresponding surface of the other respective said fixed jaw or said movable jaw to clamp said respective portion of textile sample against it, wherein said clamping body (22, 26) is coupled to said base body (18, 19 ) so you can swing at around at least two different axes.
    [2]
    2. Device (10) according to claim 1, characterized in that said clamping body (26) is coupled to said base body (19) through a spherical joint (28).
    [3]
    3. Device (10) according to claim 2, characterized in that said base body (19) supports a stem (32) which is parallel to said second translation direction (B) and which has an end coupled to said body clamping (26) through said ball joint (28).
    [4]
    4. Device (10) according to claim 3, characterized in that said movable jaw (15) of at least one of said first clamp (12) and of said second clamp comprises said base body (19) and said clamping body ( 26) which is coupled to said stem (32) through said spherical joint (28), wherein said stem (32) is supported by said base body (19) in a movable way with translation movement along said second direction of translation (B) and in which a linear actuator (27) is provided to actuate said stem (32) moving along said second translation direction (B).
    [5]
    5. Device (10) according to claim 4, characterized in that said linear actuator (27) is of the cylinder and piston type, in which said piston (30) is movable with respect to said cylinder (29) and is fixed to said stem (32).
    [6]
    6. Device (10) according to one or more of the preceding claims, characterized in that said first terminal (12) is coupled to said first detection means (47) of the force so as to be able to perform oscillations at least around a first axis ( C).
    [7]
    7. Device (10) according to claim 6, characterized in that said first terminal (12) is coupled to said first detection means (47) of the force so as to be able to perform oscillations at least around a different second axis (D) from said first axis (C).
    [8]
    8. Device (10) according to claim 6 or 7, characterized in that said first axis (C) is substantially orthogonal to a plane parallel to said first translation direction (A) and to said second translation direction (B).
    [9]
    9. Device (10) according to claim 7 or 8, characterized in that said second axis (D) is parallel to said second translation direction (B).
    [10]
    10. Device (10) according to one or more of the preceding claims, characterized in that said first force detection means (47) comprise an elongated body (35) which is arranged along a direction orthogonal to the plane parallel to said first direction of translation (A) and to said second translation direction (B) and which is supported by at least one load cell (37, 38), wherein said first terminal (12) is coupled to an end of said elongated body (35).
    [11]
    11. Device (10) according to claim 10, characterized in that said elongated body (35) is supported by at least two load cells (37, 38).
    [12]
    12. Device (10) according to claim 10 or 11, characterized in that said first terminal (12) is mounted on a plate (21) which is rotatably supported about a first pin (39) fixed to said end of said elongated body (35) and substantially coaxial with said elongated body (35).
    [13]
    13. Device (10) according to claim 12, characterized in that said plate (21) is mounted on a support bracket (41) so as to be able to perform oscillations around an axis parallel to said second translation direction (B) , wherein said support bracket (41) is rotatably coupled around said first pin (39).
    [14]
    14. Device (10) according to one or more of the preceding claims, characterized in that it comprises movement means (46) for moving said second terminal (13) in sliding along said first translation direction (A), which means of movement (46) are of the belt type (49) closed on itself as a ring and wound around a driving pulley and an idle pulley, wherein a slide (50) is fixed to a branch of said belt (49) on which said second terminal (13) is mounted.
    [15]
    15. Device (10) according to claim 14, characterized in that said second detection means (48) of the displacement comprise a position transducer (56) which is mounted on said slide (50).
    [16]
    16. Device (10) according to one or more of the previous claims, characterized in that said first translation direction (A) is vertical, said second translation direction (B) is horizontal and said first terminal (12) is arranged at above said second terminal (13).
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    同族专利:
    公开号 | 公开日
    US20170108416A1|2017-04-20|
    CN106596259A|2017-04-26|
    ITUB20154807A1|2017-04-20|
    DE102016012518A1|2017-04-20|
    US9869620B2|2018-01-16|
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    法律状态:
    2019-11-29| AZW| Rejection (application)|
    优先权:
    申请号 | 申请日 | 专利标题
    ITUB2015A004807A|ITUB20154807A1|2015-10-20|2015-10-20|MEASUREMENT DEVICE FOR THE MEASUREMENT OF DYNAMOMETRIC CHARACTERISTICS OF TEXTILE SAMPLES EXTENDED IN THE TYPE OF YARNS, WIRES, TAPES AND THE LIKE.|
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