JP2017160561A - Yarn breakage sensor in creel device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent as much as possible the contamination of the light-projecting surface of a light projector and the light-receiving surface of a light receiver caused by the vibration (displacement) of a yarn in a vertical direction in a yarn traveling path, thereby preventing the erroneous detection of yarn breakage, in a yarn breakage sensor for a creel device, in particular, in a yarn breakage sensor which is provided for each yarn feeder so that the yarn drawn out from the yarn feeder travels in the yarn traveling path demarcated by a pair of facing surfaces provided so as to face each other in the vertical direction, and which includes the light projector provided so as to be exposed on one of the facing surfaces and the light receiver provided so as to be exposed on the other of the facing surfaces and face the light projector.SOLUTION: A yarn breakage sensor includes a yarn guide which is provided on at least the upstream side of an upstream side and a downstream side with respect to a yarn traveling path, and which has a pair of restriction surfaces facing each other in a vertical direction. A space between the pair of restriction surfaces is equal to or less than 1/2 of a space between a pair of facing surfaces.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a yarn break sensor for a creel device, and in particular, from a yarn feeder having a pair of opposing surfaces provided so as to oppose each other in the vertical direction, and a yarn traveling path defined by the pair of opposing surfaces. Each of the yarn feeders is provided in a creel device so that the drawn yarn travels, and a light projector provided exposed on one of the opposing surfaces of the pair of opposing surfaces and a pair of the opposing surfaces The present invention relates to a yarn breakage sensor including a light receiver that is exposed to the other facing surface and is provided to face the projector.

  A creel device that supplies a large number of yarns to a textile machine such as a warping machine or a loom is configured so that a large number (for example, several hundreds) of yarn supply bodies can be suspended. The suspended yarn is provided corresponding to each position where the yarn feeder is suspended so that the yarn breakage of the yarn drawn from the yarn feeder (hereinafter also simply referred to as “yarn”) can be detected. A thread breakage sensor (provided for each body) is provided. In other words, the creel device includes the same number of yarn breakage sensors as the number of yarn feeders that can be suspended.

  As a yarn breakage sensor for such a creel device, there is one disclosed in Patent Document 1. Patent Document 1 discloses an application relating to a brake device for adjusting the tension of a yarn in a creel device, but discloses that the brake device includes a yarn break sensor, although there is no detailed description.

  More specifically, the brake device of Patent Document 1 is mainly composed of a plate-like brake body, and the thread break sensor protrudes from the front surface of the brake body (the surface opposite to the mounting side surface (back surface)). The structure is formed integrally with the brake body. The thread breakage sensor is provided at a substantially central portion of the brake body, and is composed of a pair of projecting portions that are positioned on both sides in the vertical direction across the center of the brake body and are formed so as to project from the brake body. ing. Further, the pair of projecting portions are formed such that the surfaces (opposing surfaces) facing the other projecting portions of the projecting portions are formed in a planar shape, the facing surfaces of both projecting portions are parallel to each other and the width direction of the brake body. It is provided so as to be parallel. And the brake device of patent document 1 is provided on the creel device in such an arrangement that the yarn travels in the yarn traveling path defined by the pair of opposed surfaces formed by the two protruding portions.

  Patent Document 1 describes that the yarn break sensor is a light transmission type sensor and detects the state of the yarn passing through the brake device as a waveform. Therefore, as understood from the description, the yarn break sensor includes a projector and a light receiver (projector / receiver), and the projector is disposed in one of the pair of projecting portions and the other. It is configured in such a way that a light receiver is disposed inside. Further, the light projecting and receiving device is opposed in the vertical direction to expose the light projecting surface and the light receiving surface (projecting and receiving surface) to the facing surface of the protruding portion on which the light projecting and receiving device is provided, and its optical axis passes through the yarn traveling path. It is provided to cross. In addition, the yarn break sensor outputs a light reception waveform corresponding to the amount of light received by the light receiver.

  Incidentally, although not disclosed in Patent Document 1, when the yarn is traveling (without yarn breakage), the light reception waveform output from the yarn breakage sensor changes (waveform) according to the yarn or the like. Indicates. In other words, when the yarn breakage occurs and the traveling of the yarn stops, the received light waveform has a small change (almost no change). Therefore, in the creel device, the light reception waveform output from the yarn break sensor is compared with, for example, a threshold value (or reference waveform) in a yarn break detector provided on the creel device, thereby determining whether there is a yarn break. Is determined.

JP 2006-298522 A

  By the way, in such a creel device, the yarn pulled out from the yarn feeder vibrates in the vertical direction as the unwinding point on the yarn feeder rotates on the circumferential surface of the yarn feeder. The displacement is repeated in such a way. Accordingly, the yarn vibrates in the vertical direction in the yarn traveling path even in the yarn breakage sensor. As a result, in the yarn break sensor, the yarn may come into contact with the upper and lower opposing surfaces that define the yarn traveling path, and accordingly, dirt may periodically adhere to the light projecting / receiving surface of the light projecting / receiving device. Further, the yarn waste separated from the yarn by the yarn coming into contact with the facing surface falls on the light receiving surface (or light projecting surface) exposed on the lower facing surface, whereby the light receiving surface (or light projecting surface) is It may become dirty.

  If the light projecting / receiving surface of the light projecting / receiving device becomes dirty as described above, the light receiving device cannot obtain a sufficient amount of received light, and the light receiving waveform corresponding to the yarn is traveling even though the yarn is traveling. There is a possibility that a change is not detected, and erroneous detection of yarn breakage may occur.

  Accordingly, the present invention provides a yarn break sensor used in a creel device that suppresses vibration (displacement) of the yarn in the vertical direction in the yarn traveling path, and receives light from the light projecting surface of the light projector and the light receiver due to the vibration. The purpose of the present invention is to prevent contamination of the surface as much as possible and prevent false detection of yarn breakage.

  In order to achieve the above object, the present invention provides a yarn breakage sensor for a creel device as described above, wherein the yarn breakage sensor is upstream of the yarn travel path with respect to a yarn path having the yarn feeder as the most upstream side. A yarn guide provided on at least the upstream side of the side and the downstream side, the yarn guide having a pair of restricting surfaces opposed in the vertical direction, and the yarn guide in a pair in the vertical direction The distance between the restriction surfaces is less than or equal to ½ of the distance between the pair of opposed surfaces.

  The “thread path” mentioned above refers to each thread break sensor provided on the creel device, and the thread drawn from the yarn feeder corresponding to the thread break sensor is in the thread break sensor as described above. This is a path (traveling path) along which the yarn travels in a state where the thread travels (travels) through the thread traveling path. Further, the “upstream side” and “downstream side” mentioned above are positions with respect to the yarn path (traveling path) with respect to the yarn traveling path, and represent positions when the yarn feeder side is the most upstream side. ing. Therefore, the upstream side with respect to the yarn traveling path is the yarn feeder side, and the downstream side is the textile machine side to which the yarn is supplied.

  Further, in the yarn break sensor according to the present invention, the yarn break sensor includes a pair of protrusions provided so as to protrude from the plate-like base plate so that the pair of opposed surfaces are formed. Further, the yarn guide may be provided on the base plate so as to be attached to both the protruding portions.

  According to the yarn breakage sensor according to the present invention including the yarn guide as described above on the upstream side of the yarn traveling path, the yarn guide is pulled out from the yarn feeding body on the yarn feeder side of the yarn breakage sensor (yarn traveling path). Accordingly, even if the displacement is repeated so that the yarn vibrates in the vertical direction, the vibration is suppressed by the upper and lower restricting surfaces of the upstream yarn guide, and therefore, the yarn between the projector and the light receiver in the yarn breakage sensor. In the traveling path, the vibration of the yarn is suppressed. As a result, the risk of the yarn traveling in the yarn traveling path coming into contact with the pair of opposed surfaces that define the yarn traveling path is reduced. False detection is prevented as much as possible.

  Further, in such a thread break sensor, the thread guide is provided on the base plate so as to be attached to the protruding portion of the thread break sensor, so that the thread break sensor (excluding the thread guide) is newly provided. Therefore, the yarn breakage sensor can be provided with such a yarn guide without adding any additional components, which is advantageous in terms of manufacturing (ease of manufacturing and manufacturing cost). That is, according to the configuration, since the protruding portion is a component originally provided in the yarn breakage sensor, the yarn guide is fixedly provided to the base plate of the yarn breakage sensor with the arrangement as described above. In this case, it is not necessary to newly add a dedicated component for realizing the state, which can be advantageous with respect to the manufacturing aspect.

The side view which shows roughly a part of creel apparatus with which this invention is based. The (a) front view and (b) side view which show the installation state on the creel apparatus of a thread break sensor. The partial cross section top view which shows the installation state on the creel apparatus of a thread break sensor. The (a) front view and (b) side view which show one Embodiment of the thread break sensor by this invention. (A) AA sectional view of Drawing 4 (a), and (b) BB sectional view of Drawing 4 (a). The (a) partial cross section side view and (b) front view which show the principal part in one Embodiment of the thread break sensor by this invention. (A) The front view and (b) side view which show other embodiment of the thread break sensor by this invention. The side view which shows the principal part of embodiment shown by FIG. The side view which shows other embodiment of the thread | yarn guide in the thread break sensor by this invention.

  Hereinafter, an embodiment (example) of a yarn break sensor for a creel device according to the present invention will be described with reference to FIGS.

  FIG. 1 is a diagram schematically showing a part of a creel device 10 to which the present invention is applied. However, FIG. 1 shows an example in which the yarn T is supplied to the winding device 20 such as a warping machine by the creel device 10. A large number of yarns T drawn from the creel device 10 are introduced into the winding device 20 in a state where they are aligned in the width direction of the winding device 20 (the axial direction of the winding shaft 22) when viewed in the vertical direction. The winding shaft 22 is rotationally driven by a driving device (not shown). Therefore, the creel device 10 is in a direction (hereinafter referred to as “front-rear direction”) orthogonal to a direction parallel to the width direction of the winding device 20 (hereinafter referred to as “width direction”) with respect to the horizontal direction. It is installed at a position separated from the winding device 20.

  In the illustrated example, the creel device 10 includes a plurality of yarn supply frames 12 installed on a machine frame (not shown). Further, the yarn feeding frame 12 has a plurality of support rods 12 a that are extended in the vertical direction in the creel device 10. Further, in the yarn feeding frame 12, a plurality of pegs 12b for suspending the yarn feeding body P are attached to each support rod 12a at predetermined intervals in the longitudinal direction of the support rod 12a (FIG. 2). ). With this configuration, the creel device 1 is configured to be able to suspend a large number of yarn feeders P. However, in the creel device 10, each peg 12b is attached to the support rod 12a so that its extending direction is parallel to the width direction with respect to the horizontal direction and slightly upward. Therefore, the creel device 10 has a configuration in which a large number of pegs 12b are arranged in a matrix when viewed in the width direction. In the creel device 1, the yarn feeding body P is suspended from each peg 12 b, and a large number of yarns T drawn from the yarn feeding body P are supplied to the winding device 20.

  Moreover, the creel apparatus 10 is provided with the several sensor rod 14 provided corresponding to each support rod 12a, as shown in FIG. The sensor rod 14 is provided so as to be separated from the corresponding support rod 12a in the width direction and to extend in the vertical direction in the creel device 1. The sensor rod 14 is a square bar having a rectangular cross-section in the direction orthogonal to the longitudinal direction, the side surface having a narrower width (narrow side surface) is opposed to the corresponding support rod 12a, and the front-rear direction In the arrangement, one of the wider side surfaces (wide side surfaces) is positioned near the position where the peg 12b is attached to the support rod 12a, and the other wide side surface is positioned closer to the winding device 20 than the position. Is provided.

  Furthermore, the creel device 10 is provided with a large number of thread breakage sensors 30 provided so as to correspond to the respective pegs 12b. More specifically, in the creel device 10, a plurality of thread breakage sensors 30 are provided so as to correspond to each of the plurality of pegs 12b in each support rod 12a. It is attached to the sensor rod 14 so as to be aligned in the direction. That is, the same number of thread breakage sensors 30 as the pegs 12b attached to the corresponding support rod 12a are attached to each sensor rod 14 in the form of being arranged in the longitudinal direction of the sensor rod 14. Yes. In each sensor rod 14, each of the plurality of thread breakage sensors 30 has a corresponding peg 12 b (more specifically, a plurality of support rods 12 a corresponding to the sensor rod 14 to which the sensor rod 14 is attached. The peg 12b is provided at substantially the same height position (position in the vertical direction) as the corresponding peg 12b).

  In each sensor rod 14, the thread break sensor 30 is attached to the one wide side surface of the sensor rod 14. Therefore, in the creel device 10, each yarn break sensor 30 has its own side portion on the front side of the yarn feeder P suspended on the corresponding peg 12b as shown in FIGS. It is provided in the form of facing the body P. Then, the yarn T pulled out from each yarn feeder P passes through the corresponding yarn breakage sensor 30, is turned by the yarn breakage sensor 30, and is guided to the winding device 20 side.

  Although not described in detail, in the illustrated example, the creel device 10 is provided so as to be positioned between each yarn feeder P and the corresponding yarn break sensor 30 by extending in the vertical direction. Two tension rods 16, 16 are provided. Then, the yarn T drawn from each yarn feeder P is wound around the tension rods 16 and 16, so that the yarn T is slightly turned to the front (winding device 20 side) in the front-rear direction. The yarn breakage sensor 30 is guided from the front toward the yarn breakage sensor 30 (FIG. 3).

  4 and 5 show the configuration of an example of the yarn break sensor 30 in detail. Incidentally, the thread breakage sensor shown in FIGS. 4 and 5 basically has the same configuration as the brake device disclosed in Patent Document 1 described above, and also has a function as a brake device. . In addition, about the many thread break sensors 30 with which the creel apparatus 10 is equipped, since the structure of itself, the attachment state with respect to the sensor rod 14, etc. are the same in all the thread break sensors 30, the one thread break is described below. The sensor 30 will be described.

  The yarn break sensor 30 is mainly composed of a plate-like base plate 31 and is configured to be attached to the sensor rod 14 in the base plate 31. However, the base plate 31 has a substantially rectangular base portion 31a when viewed from the front in the thickness direction of the base plate 31, and the base portions 31a on both sides in the vertical direction which is the direction of the short side of the substantially rectangular base portion 31a. And a substantially trapezoidal part (trapezoidal part) formed integrally with each other, and is formed in a substantially octagonal shape as a whole. The thread breakage sensor 30 is oriented so that the lateral direction, which is the direction of the long side of the base 31a in the base plate 31, coincides with the width direction, that is, in the direction in which the trapezoidal part is positioned above and below the base 31a. It is attached to the sensor rod 14. The base 31a of the base plate 31 has substantially the same dimensions as the dimensions of the wide side surface of the sensor rod 14 to which the thread breakage sensor 30 is attached in the lateral direction (= the width direction). Yes.

  The thread breakage sensor 30 has a pair of round bar-shaped guide bars 32, 32 provided on both sides of the base portion 31a in the width direction so as to extend in parallel with the vertical direction (= vertical direction) of the base portion 31a. doing. Each guide bar 32 is attached to the base plate 31 by a support portion 31b formed integrally with the base portion 31a and the trapezoidal portion in the base plate 31. That is, the base plate 31 has a pair of support portions 31b and 31b formed on both side portions of the base portion 31a with respect to the width direction so as to be separated in the vertical direction, and each guide bar 32 has both end portions thereof. Is attached to the base plate 31 in a form supported by the pair of support portions 31b and 31b.

  Further, each support portion 31b in the base plate 31 in the thickness direction of the base plate 31 is a part of the front surface of the base portion 31a (a surface (back surface) that faces the sensor rod 14 when attached to the sensor rod 14). The rear side in the front-rear direction in the state where the thread breakage sensor 30 is attached to the sensor rod 14 (hereinafter, simply referred to as “rear side”). )). Accordingly, each guide bar 32 supported by the support portion 31b is provided so that a part thereof slightly protrudes to the rear side from the front surface of the base portion 31a in the plate thickness direction. ing.

  The base plate 31 has a pair of projecting portions 33 and 33 in which a projector and a light receiver, which will be described later, are housed. The pair of projecting portions 33 and 33 are provided in the base plate 31 so as to be spaced apart in the vertical direction at the approximate center in the width direction with the approximate center in the vertical direction interposed therebetween. Each of the protrusions 33 is formed by deforming (protruding) a part of the plate-like base 31a in the plate thickness direction by, for example, pressing. Therefore, the inside of each protrusion 33 is a cavity.

  Each protrusion 33 is formed in the shape shown in the figure as an example, and the peripheral surface 33a on the center side of the base plate 31 in the peripheral surface (the surface not parallel to the front surface of the base portion 31a) is the base portion. The planar shape is formed so as to be orthogonal to the front surface of 31a and to extend in parallel with the width direction. Therefore, in the base plate 31, the pair of projecting portions 33 and 33 face each other on the peripheral surface 33a on the center side. Thereby, the base plate 31 is a pair of opposed surfaces composed of the central peripheral surfaces 33a and 33a in the pair of projecting portions 33 and 33, and is spaced apart in the vertical direction so as to face each other and the width direction. It has a structure which has a pair of opposing surfaces extended in parallel and has a space (yarn traveling path described later) 31c between the pair of opposing surfaces 33a, 33a.

  Furthermore, in each protrusion 33, two peripheral surfaces that are continuous on both sides in the width direction with respect to the opposing surface 33a of the peripheral surface are formed so as to be substantially orthogonal to the opposing surface 33a. That is, each protrusion 33 has two peripheral surfaces (both peripheral surfaces) continuous with the opposing surface 33a on both sides of the opposing surface 33a in the width direction of the peripheral surface, and the vertical direction (vertical direction) of the base portion 31a. ) And extend in parallel with each other. In the yarn breakage sensor 30 of the present embodiment, the circumferential surfaces on both sides of each protrusion 33 serve as attachment surfaces for attaching a yarn guide described later.

  The yarn breakage sensor 30 having the above-described configuration and the pair of guide bars 32, 32 as described above is arranged as described above, and the back surface of the base plate 31 faces the sensor rod 14. In this state, the sensor rod 14 is attached. After that, the thread T drawn from the yarn feeder P suspended on the peg 12b corresponding to the thread breakage sensor 30 is broken from the front of the thread breakage sensor 30 by the tension rods 16 and 16 as described above. After being guided to the sensor 30, by being wound around each of the pair of guide bars 32, 32 in the yarn break sensor 30, it is guided in the width direction along the base portion 31a on the base plate 31 in the yarn break sensor 30. A state is reached (FIG. 5A).

  Further, the position in the vertical direction of the thread T guided so as to cross the thread breakage sensor 30 is in the space 31c formed by the pair of opposed surfaces 33a and 33a formed by the pair of protrusions 33 and 33 described above. Set to pass through. Therefore, when the yarn T is supplied to the winding device 20, the yarn break sensor 30 causes the yarn T to pass (run) in the space 31c, and the space 31c becomes the yarn feeder P. A yarn traveling path on which the yarn T drawn out from the traveling travels.

  Further, as described above, both guide bars 32, 32 are so that a part of the guide bars 32, 32 slightly protrudes to the rear side of the front surface of the base portion 31a with respect to the front-rear direction. Is provided. Accordingly, the yarn T guided by being wound around the two guide bars 32, 32 as described above is separated from the front surface of the base portion 31a toward the rear side with respect to the front-rear direction, and the yarn traveling path 31c. It will be in a state of traveling inside.

  In addition, the yarn break sensor 30 includes a light projector 35a and a light receiver 35b that constitute an optical sensor in order to detect a traveling state of traveling in the yarn traveling path 31c (FIG. 5). . The light projector 35a and the light receiver 35b are housed in a pair of protrusions 33, 33 in the base plate 31, more specifically, the light projector 35a is one of the pair of protrusions 33, 33 in the base plate 31 (in the illustrated example). The light receiving device 35b is provided inside the other of the pair of protrusions 33, 33. Further, the opposing surfaces 33a of the projecting portions 33 and 33 are holes for exposing the light projecting surface of the light projector 35a or the light receiving surface of the light receiver 35b to the yarn traveling path 31c, and are provided on the light projecting surface and the light receiving surface. A hole 33b having a corresponding shape (rectangular shape in the illustrated example) is formed. As a result, the light projecting surface 35a and the light receiving device 35b are arranged in the protruding portion 33 as described above, and the light projecting surface and the light receiving surface are exposed to the yarn traveling path 31c through the holes 33b in the facing surface 33a. Provided.

  According to the configuration of the optical sensor, the light (visible light, laser light, etc.) emitted by the projector 35a is received by the light receiver 35b, and the optical axis crosses the yarn traveling path 31c in the vertical direction. Become. Therefore, in a state where the yarn T is traveling in the width direction in the yarn traveling path 31c, the traveling state of the yarn T is detected by detecting the amount of light received by the light receiver 35b. More specifically, since the yarn T has a large number of fluff on the surface thereof, the amount of received light changes with the movement of the fluff when the yarn T travels. Further, since the yarn T travels in the yarn traveling path 31c while vibrating (displaced) in the vertical direction as described above, the amount of received light also changes due to the vibration of the yarn T. Accordingly, when the yarn T is traveling normally, the amount of received light is detected as indicating a change obtained by combining the two changes. In other words, when the yarn breakage occurs and the traveling of the yarn T is stopped, the amount of received light hardly changes because there is no movement of the fluff and vibration of the yarn T as described above. In addition, the yarn break sensor 30 includes a circuit board (not shown) for detecting the amount of received light, and the circuit board generates a signal that represents a change in the amount of received light as a waveform. .

  The signal generated in the yarn break sensor 30 (the circuit board) is output to a yarn break detector (not shown) provided on the creel device. In the yarn breakage detector, a waveform (light reception waveform) indicating the change in the amount of received light represented by the signal is compared with, for example, a reference threshold (or reference waveform), thereby Presence / absence is determined.

  Incidentally, the yarn break sensor 30 of the present embodiment also has a function as a brake device disclosed in Patent Document 1 as described above. Therefore, the yarn break sensor 30 does not contribute to the detection of the yarn break, but includes a brake plate 40. However, since the configuration and operation of the brake device are the same as those disclosed in Patent Document 1, description thereof is omitted here.

  In the yarn breakage sensor 30 configured as described above, according to the present invention, the yarn breakage sensor 30 suppresses vibration of the yarn T in the yarn traveling path 31c as described above when the yarn T travels. The yarn guide is provided. Below, the structure etc. are demonstrated concretely regarding the thread | yarn guide in the thread break sensor 30 of a present Example.

  First, as a prelude, the yarn break sensor 30 of the present embodiment passes through both sides in the width direction with respect to the yarn travel path 31c, that is, through the yarn travel path 31c in the thread break sensor 30 from the yarn feeder P, and the winding device 20. The yarn guides are provided both on the upstream side (side closer to the yarn feeder P) and the downstream side (side closer to the winding device 20) with respect to the yarn traveling path 31c with respect to the path (traveling path) of the yarn T leading to It is assumed that it is configured to include a pair of yarn guides. In addition, it is assumed that the pair of yarn guides is constituted by a pair of guide members 37, 37. In other words, the yarn break sensor 30 of this embodiment includes a pair of guide members 37 and 37, and each guide member 37 has a configuration corresponding to the yarn guide referred to in the present invention.

  With respect to each guide member 37, each guide member 37 is a plate-like member formed of a material (for example, ceramics) that is considered appropriate for guiding the yarn T. Further, as shown in FIG. 6A, each guide member 37 has a substantially U-shaped shape by cutting out a part of a substantially rectangular member when viewed in the thickness direction. It is the member formed in this way. That is, each guide member 37 has a substantially rectangular shape, and in order to allow the thread T to pass through the guide member 37, the center portion in the long side direction when viewed in the plate thickness direction. And having a rectangular cutout portion 37a that is cut out so as to open to one of both end faces (surface perpendicular to the plate thickness direction) and peripheral surface (plane parallel to the plate thickness direction). It has become.

  Each guide member 37 has the long side dimension that is larger than the vertical distance between the pair of opposing surfaces 33a and 33a in the base plate 31 with respect to the dimension in the long side direction (long side dimension). Each guide member 37 has a short side dimension that is larger than a dimension of the projecting portion 33 in the projecting direction from the base portion 31 a of the base plate 31 with respect to a dimension in the short side direction (short side dimension). Further, the cutout portion 37a formed as described above has a dimension in the long side direction, that is, a distance between upper and lower inner side surfaces 37a1 and 37a1 which are two surfaces of the inner side surface facing the long side direction. However, it is formed smaller than the distance between the pair of opposed surfaces 33a, 33a in the base plate 31.

  The pair of guide members 37, 37 are arranged on the base plate 31 so as to be attached to the protruding portion 33 so as to sandwich the yarn traveling path 31 c in the base plate 31 in the width direction.

  More specifically, each guide member 37 has a circumferential surface (hereinafter referred to as “rear side surface”) in which the cutout portion 37a is opened in a direction parallel to the vertical direction (the vertical direction of the base portion 31a), and the vertical direction. , The cutout portion 37 a is disposed so as to be positioned at the approximate center of the yarn traveling path 31 c in the base plate 31. Each guide member 37 is oriented such that the notch 37a extends parallel to the front-rear direction with respect to the front-rear direction, and the position of the rear side is the end surface of the protrusion 33 in the base plate 31 (the front surface of the base 31a). Are arranged so as to coincide with the positions of the planes parallel to each other.

  In addition, the pair of guide members 37, 37 is in a state where one of the pair of guide members 37 is in contact with the attachment surface on the upstream side of the two attachment surfaces in each protrusion 33. , 33. Similarly, the other guide members 37, 37 are attached to the pair of protrusions 33, 33 in contact with the attachment surface on the downstream side of the two attachment surfaces of each protrusion 33. It has been. Accordingly, the guide members 37, 37 are adjacent to both ends of the yarn traveling path 31c in the base plate 31 with respect to the width direction, and the existence range in the vertical direction covers the yarn traveling path 31c of the base plate 31 and a pair of projecting portions. It is provided on the base plate 31 in such a manner as to straddle 33, 33. In the state in which each guide member 37 is attached to the base plate 31 (both projecting portions 33, 33) as described above, the notch portion 37a in each guide member 37 is substantially at the center of the yarn traveling path 31c in the vertical direction, that is, , Located at substantially the same distance from each facing surface 31a.

  Furthermore, in each guide member 37, the dimension of the notch 37a in the short side direction is substantially the same as the dimension of the projecting portion 33 in the projecting direction (the front-rear direction). Therefore, in the state where each guide member 37 is attached to the base plate 31 (both projecting portions 33, 33) as described above, the notch portion 37 a is the bottom surface of the inner side surface (parallel to the long side direction of the guide member 37). The inner side surface 37a2 is in a state of being located at substantially the same position as the front surface of the base portion 31a in the front-rear direction.

  In addition, as described above, each guide member 37 has the short side dimension larger than the dimension of the projecting portion 33 in the projecting direction, and thus is parallel to the rear side surface of the peripheral surface. A peripheral surface (hereinafter referred to as “front side surface”) is in a state of being located on the side (sensor rod 14 side / front side) opposite to the protruding portion 33 with respect to the base portion 31a in the front-rear direction. That is, each guide member 37 is provided in a state (arrangement) in which a portion on the front side surface with respect to the notch portion 37a in the short side direction is located closer to the sensor rod 14 than the front surface of the base portion 31a. Yes.

  For this purpose, the base portion 31a is formed with holes for allowing the guide members 37 to be arranged and penetrating in the thickness direction at positions corresponding to the arrangement of the guide members 37. ing. Incidentally, the base plate 31 is in an attached state in which the thread breakage sensor 30 is attached to the sensor rod 14, and the back surface of the base portion 31 a is in contact with the one wide side surface of the sensor rod 14 as shown in FIG. The shape is such that they are separated in the front-rear direction. Accordingly, in the attached state, a gap exists between the back surface of the base portion 31a and the one wide side surface of the sensor rod 14, and a portion of the guide member 37 closer to the front side than the notch 37a. Is located in the gap.

  In the yarn break sensor 30 provided with the pair of guide members 37, 37 provided as described above, the yarn T traveling in the yarn traveling path 31c as described above is guided by each guide member 37 in the width direction. In this position, the guide member 37 passes through the notch 37. As a result, the vibration of the yarn T in the vertical direction caused by the pulling out from the yarn feeder P as described above faces at least the long side direction (vertical direction) of the notch 37a in the guide member 37 on the upstream side. The upper and lower inner surfaces 37a1 and 37a1 are restricted. Accordingly, the upper and lower inner side surfaces 37a1 and 37a1 of the guide member 37 serve as restriction surfaces for restricting the vibration of the yarn T as described above. That is, each guide member 37 has a pair of regulating surfaces 37a1 and 37a1 for regulating the vibration of the yarn T as described above.

  In addition, in the yarn breakage sensor 30, the pair of regulating surfaces 37a1 and 37a1 in each guide member 37 is provided with a distance d (in the vertical direction) in the yarn breakage sensor 30 (in the base plate 31). ) It is formed to be ½ or less with respect to the distance D between the pair of opposed surfaces 33a, 33a (FIG. 6A).

  That is, the above-mentioned dirt adhesion to the light projecting / receiving surface of the light projecting / receiving device in the yarn breakage sensor is caused by the contact between the yarn and each facing surface, and the contact is caused by the vibration of the yarn as described above. Therefore, in order to prevent the dirt from being attached as much as possible, it is necessary to suppress the vibration of the yarn in the yarn traveling path in the yarn breakage sensor. Therefore, the inventors of the present invention, as a result of earnest research based on the configuration of a general creel device and the type of yarn feeder to be installed, etc., are a pair of regulating surfaces for suppressing yarn vibration. A yarn guide (guide member) having a pair of regulating surfaces opposed in the vertical direction at an interval smaller than the interval between the pair of opposed surfaces is provided, and the interval between the pair of regulating surfaces in the yarn guide is set to the interval between the pair of opposed surfaces. By setting it to 1/2 or less, the vibration of the yarn T in the yarn traveling path can prevent as much as possible the above-described dirt caused by the vibration and the trouble caused by the dirt. I found out. Thereby, in the yarn breakage sensor of the present invention, the distance between the pair of opposed surfaces in the yarn guide is set to ½ or less than the distance between the pair of opposed surfaces that define the yarn traveling path. .

  In addition, regarding the distance d between the pair of regulating surfaces 37a1 and 37a1 in each guide member 37 corresponding to the yarn guide, specifically, in the present embodiment, the distance D between the pair of opposed surfaces 33a and 33a is about 6 mm. On the other hand, the distance is d = 1.5 mm. As described above, in the yarn break sensor 30 of the present embodiment, the distance d between the pair of regulating surfaces 37a1 and 37a1 is smaller than 1/3 of the distance D between the pair of opposed surfaces 33a and 33a. And the effect which suppresses the vibration of the thread | yarn T is heightened by making the space | interval of a pair of regulation surface 37a1 and 37a1 smaller in that way, and the further reduction of the adhesion of the stain | pollution | contamination to the above light projection / reception surfaces is improved. Can be achieved.

  Although one embodiment (example) of the present invention has been described above, the present invention is not limited to the one described in the above embodiment, and implementation in the following embodiment (modification) is also possible. Is possible.

  (1) In the embodiment, the yarn break sensor 30 is a guide member 37 corresponding to a yarn guide, and the guide member 37 having the same configuration is provided on both the upstream side and the downstream side with respect to the yarn traveling path 31c. It has a configuration. However, in the present invention, the yarn breakage sensor is not limited to the configuration in which the yarn guides are provided on both of the yarn traveling paths 31c as described above, and the yarn guide is provided only on the upstream side with respect to the yarn traveling path. There may be.

  Specifically, the vibration of the yarn that causes the contamination of the light emitting / receiving surface as described above is caused by the rotation of the unwinding point of the yarn on the peripheral surface of the yarn supplying body as the yarn is pulled out from the yarn supplying body. The position of the generation source is on the upstream side with respect to the yarn traveling path. Therefore, even if the yarn guide is provided only on the upstream side with respect to the yarn traveling path, the vibration of the yarn in the yarn traveling path can be suppressed. Therefore, the yarn break sensor according to the present invention may have a configuration in which a yarn guide is provided only on the upstream side of the yarn traveling path. And in the case of the configuration, in the configuration of the embodiment, the guide member 37 is provided only on the upstream side of the yarn traveling path 31c.

  However, the configuration in which the yarn guides are provided on both of the yarn traveling paths as in the above-described embodiment makes it possible that the yarn traveling paths are arranged in the yarn traveling path as compared with the configuration in which the yarn guides are provided only on the upstream side as described above. The vibration of the yarn can be more effectively suppressed.

  Further, in the configuration in which the yarn break sensor includes the guide members on both of the yarn traveling paths as in the above-described embodiment, that is, in the configuration in which the yarn break sensor includes the pair of guide members, the pair of yarn guides is As described above, the two are not limited to the same configuration, but may be different from each other. For example, both guide members are configured such that the distance between the pair of restricting surfaces of each guide member is smaller than the distance between the upstream guide members. There may be. In the case of the configuration, the distance between the pair of regulating surfaces in the downstream guide member may be 1/2 or less with respect to the distance between the pair of opposed surfaces that define the yarn traveling path. It may be larger than 1/2. In this case, for the former, the guide member corresponds to the yarn guide of the present invention, and for the latter, the guide member does not correspond to the yarn guide of the present invention. That is, in the latter case, the yarn break sensor has a configuration in which the yarn guide of the present invention is provided only on the upstream side with respect to the yarn traveling path.

  However, when the yarn break sensor is provided with guide members on both of the yarn traveling paths, it is preferable that the two guide members are identical in structure including the distance between the pair of regulating surfaces. That is, in the creel device, as many yarn breakage sensors as the number of yarn feeders that can be suspended on the creel device are provided, and several hundred (one thousand or more in many cases) are provided for one creel device. It is done. Therefore, a considerable number of yarn guides are prepared, and in that case, it is more advantageous in terms of manufacturing costs to have the same configuration. Therefore, when the yarn break sensor includes a pair of yarn guides, it is preferable that both the yarn guides are structurally the same.

  Further, regarding the configuration of the yarn guide, in the above-described embodiment, the yarn break sensor includes a single guide member having a notch portion formed so as to have a pair of regulating surfaces. It has a corresponding configuration. However, the yarn guide in the yarn breakage sensor of the present invention is not limited to being composed of a single member as in the above embodiment, as long as it has a pair of regulating surfaces. For example, two members having a restriction surface may be arranged so that the restriction surfaces face each other in the vertical direction, and the yarn guide may be configured by the two members.

  Further, in the configuration in which the yarn breakage sensor includes a pair of yarn guides provided on both of the yarn traveling paths as in the embodiment, the yarn breakage sensor includes a pair of yarn guides as in the embodiment. The pair of yarn guides may be included in a single member, not limited to the guide member. For example, a single member having a portion (guide portion) formed like the guide member of the above-described embodiment at two locations separated in the width direction is attached to the base plate of the thread breakage sensor, and the member in the member The guide portion may be a pair of yarn guides.

  In the yarn guide according to the present invention, the distance between the pair of regulating surfaces may be ½ or less with respect to the distance between the pair of opposed surfaces of the yarn breakage sensor (base plate). It is more preferable that it is smaller than 1/3 as in the configuration of the above embodiment. However, as a matter of course, the interval needs to be set larger than the thickness (diameter) of the yarn in the yarn feeder mounted on the creel device.

(2) With respect to the yarn guide, the pair of regulating surfaces in the yarn guide includes the route in the front-rear direction above and below the route of the yarn in the yarn traveling path in the yarn break sensor. It needs to be provided. In other words, it is only necessary that each regulating surface exists only in a range (necessary range) including the yarn path in the front-rear direction. On the other hand, in the above-described embodiment, the yarn guide (guide member 37) has a configuration in which each regulation surface has a short side dimension such that the rear side surface extends from substantially the same position of the front surface of the base plate in the front-rear direction. It has become. That is, the yarn guide according to the embodiment is configured to exist in a range from the front surface of the base plate 31 to the end surface of the protruding portion 31 with respect to the front surface of the base plate 31 from the sensor rod 14 side. However, the yarn guide according to the present invention is not limited to such a range, and the pair of regulating surfaces exist in the necessary range including the path of the yarn T in the front-rear direction. Any formed material may be used. Accordingly, the yarn guide may be any one that is configured so that the member serving as the yarn guide exists at least in the necessary range in the front-rear direction.

  Furthermore, in the above-described embodiment, the guide member 37 serving as a yarn guide has a notch portion 37a that opens to the rear side surface to insert the yarn T between a pair of restricting surfaces, and the notch portion 37a has a vertical direction. All the inner side surfaces 37a1 and 37a1 which oppose become a structure which becomes a control surface. However, as described above, it is sufficient that the regulating surface is present at least in the necessary range in the front-rear direction, so that the yarn guide is formed at the top and bottom of the notch portion as in the guide member 39 shown in FIG. A portion of the inner side surface on the rear side surface (opening side) may not function as a regulating surface.

  Specifically, the guide member 39 shown in FIG. 9 has a configuration in which a notch 39a is formed in a plate-like member, like the guide member 37 of the above embodiment. The distance between the inner side surfaces is the largest on the rear side surface, and the range from the rear side surface to the boundary position (position S in the figure) near the intermediate part in the short side direction as seen in the plate thickness direction (shown in the figure). In the range R1), it gradually decreases toward the boundary position S and is the smallest at the boundary position S. Further, the range on the front side of the boundary position S (range R2 in the drawing). Is constant.

  In the guide member 39 having the cutout portion 39a formed as described above, the range R2 is the necessary range, and the upper and lower inner side surfaces 39a1 and 39a1 of the portion of the range R2 in the cutout portion 39a are the present invention. It becomes a pair of restriction surfaces. Incidentally, in the guide member 39, the upper and lower inner side surfaces 39a3, 39a3 of the cutout portion 39a in the portion of the range R1 are formed at intervals larger than the interval between the two regulating surfaces 39a1, 39a1 in the range R2 in the vertical direction. However, this configuration is advantageous when the yarn is introduced into the yarn traveling path of the yarn breakage sensor when the yarn feeder is set on the creel device.

  Regarding the necessary range described above, the light emitter / receiver in the yarn break sensor is provided at a position where the optical axis includes the yarn path in the front-rear direction. This path always passes through the optical axis of the projector / receiver in the front-rear direction. Therefore, the required range (a range including the yarn path) can be defined as a range included in the presence / absence range of the light projecting / receiving device in the front-rear direction if determined in relation to the apparatus configuration. Each regulating surface included in the yarn guide is provided so as to extend over a range including the necessary range in the front-rear direction.

  (3) In the above-described embodiment, the guide member 37 serving as a yarn guide is provided on the base plate 31 at a position adjacent to the protruding portion 33 (yarn traveling path 31c) in the base plate 31 in the above direction. However, in the yarn breakage sensor of the present invention, the yarn guide is provided at the position where the yarn guide is run in the width direction as in the embodiment, even when the yarn guide is attached to the base plate as in the embodiment. The position is not limited to the position adjacent to the road, and may be a position separated from the yarn traveling path in the width direction. However, even when the yarn guide is provided at a position separated from the yarn traveling path in the width direction as described above, the yarn guide sandwiches the approximate center of the yarn traveling path as seen in the width direction. It arrange | positions so that it may oppose up and down.

  In the yarn breakage sensor of the present invention, the yarn guide is not limited to the one provided on the base plate and attached to the base plate as described above, and is provided outside the existing range of the base plate in the width direction. May be. Specifically, the structure shown to FIG. 7, 8 is mentioned as the example. The examples shown in FIGS. 7 and 8 are examples in which the yarn guides are provided on both sides of the yarn traveling path in the width direction as in the above-described embodiment.

  In this example, the yarn break sensor 30 'includes a bracket 34 for supporting a guide member 38 as a yarn guide. The bracket 34 has a pair of side wall portions 34a and 34a which are thin plate-like side wall portions 34a and are provided so as to face each other in a state in which the plate thickness directions thereof coincide with each other. The parts 34a, 34a are connected by a pair of thin plate-like connecting parts 34b, 34b formed integrally with the side wall parts 34a, 34a. The bracket 34 has a structure in which each connecting portion 34b is continuous with one of the peripheral surfaces (surfaces parallel to the plate thickness direction) of each side wall portion 34a (connecting both side wall portions 34a and 34a on the peripheral surface). It consists of. Further, the bracket 34 has a configuration in which the extending direction of the peripheral surface of the side wall 34a where the connecting portion 34b is continuous is sufficiently long as viewed in the thickness direction of the side wall 34a with respect to the direction orthogonal to the extending direction. have. The bracket 34 is configured such that one of the pair of connecting portions 34b and 34b is located on one end side of the side wall portion 34a and the other is located on the other end side of the side wall portion 34a with respect to the longitudinal direction of the bracket 34. Yes.

  In addition, in the bracket 34, the distance between the pair of side wall portions 34 a and 34 a is slightly larger than the dimension of the base plate 31 in the width direction. Further, the distance between the pair of connecting portions 34 b and 34 b in the longitudinal direction of the bracket 34 is slightly larger than the dimension of the base plate 31 in the vertical direction. That is, in the base plate 34, the space surrounded by the pair of side wall portions 34 a and 34 a and the pair of connection portions 34 b and 34 b when viewed in the thickness direction of the connection portion 34 b has a size that can include the base plate 31. ing.

  The bracket 34 has both side walls 34a, 34a opposed to the two narrow side surfaces of the sensor rod 14 and the connecting portion 34b opposed to the one wide side surface in the vertical direction. The base plate 31 attached to the sensor rod 14 is attached to the sensor rod 14 at such a position as to be positioned between the pair of connecting portions 34b, 34b. Therefore, in the attached state, the thickness direction of the side wall portion 34a matches the width direction, and the thickness direction of the connecting portion 34b matches the front-rear direction.

  Further, in the bracket 34, each side wall portion 34a has a guide support portion 34c formed on the peripheral surface on the connection portion 34b side of the peripheral surface so as to protrude rearward from the connection portion 34b in the front-rear direction. have. In the illustrated example, the guide support portion 34c is formed in a shape as illustrated (details are omitted) and has a groove for receiving a guide member 38 as a yarn guide. And in the guide support part 34c, the guide member 38 is attached in the form received in the said groove | channel.

  In addition, the guide member 38 as a yarn guide in this example has a hook-shaped portion formed in a U-shaped main portion, thereby forming a hole-shaped guide portion (eye hole). The thread can be inserted into the eye hole between the U-shaped part and the hook-shaped part (FIG. 8). Incidentally, this type of yarn guide member is generally sold as a part of a textile product or the like. As described above, the yarn guide in the yarn break sensor of the present invention is not limited to the configuration of the above-described embodiment, and any configuration can be used as long as it can regulate the displacement of the yarn in the vertical direction. Also good.

  In the case of this example, in the thread guide, the upper part of the inner peripheral surface of the eye hole with respect to the center of the eye hole becomes the upper restriction surface, and the lower part becomes the lower restriction surface. Thus, the upper restriction surface and the lower restriction surface constitute a pair of restriction surfaces. In this example, when the guide member 38 is supported by the bracket 34 as described above, the center of the eye hole is positioned substantially at the center of the yarn traveling path when viewed in the width direction in the vertical direction. With respect to the front-rear direction, the eye hole is provided so as to be located within the necessary range (existing range of the light emitter / receiver) when viewed in the width direction.

  Further, in the case where the two restricting surfaces do not extend in parallel in the front-rear direction as in this example, the distance between the pair of restricting surfaces referred to in the present invention is the upper and lower sides within the necessary range in the front-rear direction. The distance between the two restriction surfaces in the direction is the largest distance (FIG. 8: d). In this example, the distance d is about 1.7 mm, whereas the distance (D) between the pair of facing surfaces in the base plate is about 6 mm, and is ½ or less of the pair of facing surfaces. (Smaller than 1/3).

  In the above-described embodiment, the yarn guide has a pair of restricting surfaces that are completely opposed to each other in the vertical direction. In other words, when viewed in the front-rear direction (when the base plate is viewed from the front), both restricting surfaces are in the width direction. In the same range. However, in the yarn breakage sensor according to the present invention, the pair of restricting surfaces in the yarn guide are not limited to those over the same range in the width direction, but the existence ranges of both are different (in the width direction). The dimensions may be different and / or the positions in the width direction may be different). Therefore, for example, the pair of regulating surfaces may be provided with different positions in the yarn guide in a state where the positions overlap in the width direction, and further, do not overlap in the width direction. It may be provided as follows. As described above, in the yarn breakage sensor of the present invention, the pair of regulating surfaces in the yarn guide are provided so as to face each other in the vertical direction, but the “facing” faces each other when viewed in the width direction. The shape is not limited to the shape in which the positions in the width direction are matched to face each other.

  (4) In the above embodiment, the yarn break sensor 30 also has a function as a brake device for adjusting the tension of the yarn. However, the yarn break sensor according to the present invention is not limited to the one having the function as such a brake device. Therefore, the yarn break sensor may be configured not to include the brake plate included in the configuration of the above-described embodiment.

  In the embodiment, the yarn break sensor 30 is a guide bar 32 for guiding the yarn T to demarcate the route of the yarn T in the front-rear direction, and is provided on both sides of the base plate 31 in the width direction. A pair of guide bars 32, 32 is provided. However, it is not necessary for the guide bar to be provided with the yarn break sensor itself. That is, the yarn break sensor according to the present invention may be configured not to include the pair of guide bars included in the configuration of the above embodiment. In this case, for example, the creel device includes a pair of guide bars provided for each thread break sensor and supported by a sensor rod or the like, or the sensor for each sensor rod. What is necessary is just to set it as the structure of providing a pair of guide bar common to the some thread breakage sensor attached to the rod.

  Further, in the embodiment, the yarn guide has a configuration in which a pair of opposed surfaces of the base plate extend in parallel to each other, and are formed in a planar shape parallel to the width direction and the front-rear direction. It has become. However, in the yarn breakage sensor according to the present invention, the surfaces that are the pair of opposed surfaces are not limited to those formed in a flat shape as such. For example, when viewed in the front-rear direction (the base plate is viewed from the front). It may be formed to be curved. In addition, when each surface used as a pair of opposing surface is not formed in such planar shape, the thread breakage sensor has a configuration in which the distance between the pair of opposing surfaces is not substantially constant in the width direction in the yarn traveling path. However, in that case, the distance between the pair of facing surfaces referred to in the present invention is the distance between the portions where both surfaces are closest in the vertical direction when viewed in the front-rear direction.

  Further, in the yarn breakage sensor according to the present invention, the base plate, which is a main part thereof, is not limited to the shape as in the above embodiment, but is formed in an appropriate shape according to the applied creel device. It may be. Furthermore, the yarn break sensor according to the present invention is not limited to any of the embodiments described above, and various modifications can be made without departing from the spirit of the present invention.

  The creel device to which the yarn breakage sensor of the present invention is applied is such that the creel device is used (the yarn is supplied by the creel device) is limited to the winding device such as the warping machine in the above embodiment. Alternatively, a loom for weaving a woven fabric or another textile machine using a large number of yarns may be used.

DESCRIPTION OF SYMBOLS 10 Creel device 12 Yarn feeding frame 12a Support rod 12b Peg 14 Sensor rod 30 Yarn break sensor 31 Base plate 31a Base 31c Yarn traveling path 32 Guide bar 33 Protruding part 33a Opposing surface 35a Light projector 35b Light receiver 37, 38, 39 Guide member )
37a Notch 37a1 Restricting surface T Thread P Yarn supply body

Claims (2)

Each yarn feeder has a pair of opposed surfaces provided so as to oppose each other in the vertical direction, and the yarn drawn from the yarn feeder travels in a yarn traveling path defined by the pair of opposed surfaces. A yarn break sensor provided in the creel device, wherein the light projector is provided in such a manner that the light projecting surface is exposed on one of the opposed surfaces of the pair of opposed surfaces, and the other of the pair of opposed surfaces. In a yarn break sensor for a creel device including a light receiving surface exposed to the facing surface and a light receiving device provided facing the light projector,
A yarn guide provided on at least the upstream side of the upstream side and the downstream side of the yarn traveling path with respect to the yarn path having the yarn supply body as the most upstream side, and a pair of regulating surfaces facing in the vertical direction A yarn guide having
The yarn break sensor for a creel device, wherein the yarn guide is formed so that an interval between the pair of regulating surfaces in the vertical direction is ½ or less with respect to an interval between the pair of opposed surfaces. Including a pair of projecting portions provided in a form projecting from a plate-like pace plate so that the pair of opposed surfaces are formed;
The yarn breakage sensor for a creel device according to claim 1, wherein the yarn guide is provided on the base plate in a form attached to both the projecting portions.

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