• 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:
    Weft yarn detection apparatus (20) including a yarn arrival detection device (37), a circuit board (38) connected to the device (37), a main body (30) housing the board (38) and which has a cable attachment portion (40), a cable (30) including a cable conductor (41, 42) connected to the wafer (38) to a solder (45, 46) and which is secured to the portion (40) fixing. The cable (30) extends outside the fixing portion (40) in a first direction (D1) and the conductor (41, 42) is pulled out from one end (31a) of the cable (30) in the fixing portion (40) in a second direction (D2) which is opposite to the first direction (D1). A passage (52) is formed inside the body (30) for the movement of the conductor (41, 42) from the fixing portion (40) towards the plate (38) for the deflection around. a mounting hole (54) on a side opposite to the first direction (D1).
    公开号:BE1027179B1
    申请号:E20205251
    申请日:2020-04-16
    公开日:2021-04-27
    发明作者:Daisuke Yagi；Yusuke Mizuno
    申请人:Toyota Jidoshokki Kk；
    IPC主号:
    专利说明:

    : 1 | BE2020 / 5251 # DETECTION DEVICE FOR WEFT THREAD OF A Loom # PRIOR ART
    The present disclosure relates to a weft yarn detection apparatus of a loom.
    In general, a weft yarn detection apparatus for detecting an arrival of a weft yarn is provided for a loom in which the weft yarn is inserted without using a shuttle.
    The weft thread detecting apparatus is used to check whether the weft thread has been inserted normally or not.
    The weft thread detection device is equipped with a cable.
    The cable is used for power supply and for signal transmission between the weft yarn detection apparatus and a control circuit which controls the implementation of a weft yarn insertion of the loom.
    The cable encompasses a predetermined number of cable conductors.
    In Japanese Patent Application Publication No. HO7-11545, a weft yarn detecting apparatus is disclosed which has a configuration in which a cable is attached to a metal casing, conductors of cables are pulled out from it. one end of the cable in the metal housing and the ends of the cable conductors are connected to a printed circuit board.
    In general, a conductor of cables is connected to a printed circuit board by soldering.
    However, the technique disclosed in Japanese Patent Application Publication No. H07-11545 suffers from the problem set forth below.
    € 2020/5251 BE2020 / 5251: 2 î When a weaving width of a fabric in a loom 9 is changed, an installation position of a yarn {weft detection apparatus is also changed accordingly. of the modification of lo 9 weaving width. In such cases, an intense pulling force can be exerted on a cable of the weft yarn detection apparatus when an operator is not paying attention. When this case arises, with regard to the weft yarn detecting apparatus disclosed in Japanese Patent Application Publication No. H07-11545, a large load is likely to be exerted on portions of the weft. soldering conductors of cables which are pulled straight out from one end of the cable and which are connected to a printed circuit board. As a result, one may be faced with separation at the solder portions of the cable conductors, which gives rise to a cable disconnection problem. The present disclosure derives from the above-mentioned circumstances and it is intended to provide a weft yarn detection apparatus of a loom, which is capable of reducing the occurrence of failures due to the loom. to a disconnection of a cable caused by a separation of a solder portion of a cable conductor, when a cable is pulled through an external force.
    SUMMARY In accordance with a first aspect of the present disclosure, there is provided a weft yarn detection apparatus of a loom. The weft yarn detecting apparatus detects an arrival of a weft yarn which is to be inserted. The weft yarn detection apparatus includes
    ; BE2020 / 5251 a detection device which detects the arrival of the weft thread, a | a printed circuit board which is electrically connected to the detection device, a main body of the apparatus in which the printed circuit board is housed and which has an attachment portion 9 for a cable, and a cable which includes a cable conductor 9 which is connected from the printed circuit board to a solder portion 9 and which is attached to the cable attachment portion of the main body of the apparatus. The cable extends outside the attachment portion for a cable in a first direction. The cable conductor is pulled out from one end of the cable into the fixing portion for a cable in a second direction which is opposite to the first direction. The main body of the apparatus has a passage for the passage of the cable conductor formed inside the main body of the apparatus, which is adapted for the passage of the cable conductor from the fixing portion for a cable. towards the printed circuit board. The main body of the apparatus has a mounting hole through which the main body of the apparatus is mounted in a predetermined position on the hair straightener. The passage for the passage of the cable conductor is made for deflection around the mounting hole on a side opposite to the first direction.
    Other aspects and advantages of the disclosure will become apparent from the following description, when taken in conjunction with the accompanying drawings which illustrate by way of example the principles of the disclosure.
    | BRIEF DESCRIPTION OF THE DRAWINGS 9 The disclosure, together with its objects and with its 9 advantages, can be best understood by reference to the following description 9 of the embodiments in conjunction with the accompanying drawings in which: FIG. 1 shows a side view in which one can see a configuration of a loom in accordance with one embodiment of the present disclosure: Figure 2 shows a front view in which one can see essential portions of the loom when looking in a direction A as shown in Fig. 1: Fig. 3 is a schematic drawing showing an internal configuration of a weft yarn detecting apparatus according to the embodiment of the present disclosure; and Fig. 4 shows a schematic drawing in which a state can be seen in which a cable is pulled through an external force into the weft yarn detecting apparatus according to the embodiment of the present invention. invention.
    DETAILED DESCRIPTION OF EMBODIMENTS Hereinafter, a weft yarn detecting apparatus of a loom in accordance with an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
    | 2020/5251 BE2020 / 5251 | Figure 1 shows a side view in which one can see a configuration of the loom in accordance with the embodiment of the present disclosure and Figure 2 shows a front view in which essential portions of the loom can be seen. loom 9 5 when looking in direction A (from the side affected by the splitting of the fabric 9) in Fig. 1. 9 In the loom 1, as shown in Figs 1 and | 2, a weft yarn is inserted without using a shuttle, that is, the loom 1 represents a shuttle-free loom. Examples of shuttle-free looms include a shuttle loom. rapier type, a pincer type loom, an air jet type loom and a water jet type loom. The present embodiment will be described by taking the loom as an example. air-jet type loom.
    A tilting shaft 11 is pivotally supported by a frame (which is not shown). A leaf blade 12 is fixed to an upper outer peripheral surface of the rocking shaft 11. A leaf 13 is fixed to an upper end of the leaf blade 12. The leaf 13 represents a member extending in length with the side longitudinal extends in a weft yarn insertion direction Y, as shown in Fig. 2. The weft yarn insertion direction Y represents a direction in which a weft yarn (which is not shown) } scrolls after being inserted. In the air jet type loom, the frame yarn moves in the weft yarn insertion direction Y by means of an air flow projected at from a main nozzle and from secondary nozzles which are not shown.
    A retaining groove 14 is formed in an upper portion of the leaf 13. The retaining groove 14 has a cross section.
    | BE2020 / 5251: 6 {trapezoidal in shape. A comb 15 is mounted in the groove of | retainer 14. The comb 15 is attached to the flap 13 using a fixing block 16. The comb 15 has a recessed portion 15a for forming a weft thread insertion passage, as shown. in FIG. 1. The recessed portion 15a forms a weft yarn insertion passage 9 S which extends in a direction parallel to the weft yarn insertion direction 9 Y. The weft yarn moves in the direction 9. Weft thread insert Y along the weft thread insert passage 9 S in the air jet type loom.
    9 10 A fixing groove 17 having a cross section with a T-shaped configuration is formed in the flap 13. A weft yarn detecting apparatus 20 is fixed to the flap 13 via the fixing groove 17. The fixing groove 17 is formed in a longitudinal direction of the leaf 13. The fixing groove 17 has an opening portion 17a as shown in Figure 1. A nut 18 is held in a more internal portion than the opening portion 17a of the leaf. fixing groove 17 relative to the leaf 13. A groove width at the opening portion 17a is less than the width of the internal portion of the fixing groove 17. A bolt 23 is screwed into the nut 18.
    A plate 19 having an L-shaped configuration is attached to the bolt 23. The nut 18, the plate 19 having an L-shaped configuration Let the bolt 23 are used for fixing the weft yarn detecting apparatus 20. to the leaf 13. Specifically, the bolt 23 is screwed into the nut 18 and is tightened, and then a clamping force of the bolt 23 is transmitted to the weft yarn detecting apparatus 20 through the weft yarn detection apparatus 20. plate 19 having an L-shaped configuration. In this way, the weft yarn detecting apparatus 20 is attached to the flap 13. When the bolt 23 is loosened, the weft yarn detecting apparatus 20 can move. in the longitudinal direction of the leaf
    9 13, that is, in the lateral direction as shown in Fig. 2. # The mounting position of the weft thread detecting apparatus 20 is 9 adjusted in the longitudinal direction of the leaf 13, when the bolt 23 9 is loose.
    The weft yarn detecting apparatus 20 detects an arrival of a weft yarn which has been inserted. The weft yarn detecting apparatus 20 is provided on an end side in the weft yarn inserting direction Y. The weft yarn inserting direction Y end side represents a side opposite to a side of the weft yarn inserting direction Y. start in the weft yarn insertion direction Y, where the main nozzle is located. As shown in Fig. 2, two units of the weft yarn detecting apparatus 20 are placed on the terminal side in the weft yarn insertion direction Y. One of the two weft yarn detecting apparatus 20 , which is placed upstream in the weft yarn insertion direction Y {left side in Fig. 2}, detects whether a forward end of the weft yarn which runs from the starting side towards the termination side in the weft yarn insertion direction Y or not arrives at a predetermined time within a predetermined period of time. A mounting position upstream of the weft yarn detecting apparatus 20 is set according to a weaving width of a fabric in the weft yarn insertion direction Y. The other of the two apparatus Weft yarn detecting apparatus 20, which is placed downstream in the weft yarn insertion direction Y [from the right side in Fig. 2}, detects an arrival of a leading end of a weft yarn which s 'is broken during insertion of the weft thread. There are several types of weft yarn detection apparatus which detect an arrival of a weft yarn. The present embodiment will be described by taking as an example an optical type weft yarn detecting apparatus.
    In Fig. 3, there is shown a schematic drawing showing an internal configuration of the frame yarn detection apparatus according to the embodiment of the present disclosure. # The internal configuration of the weft yarn detecting apparatus shown in Fig. 3 is viewed in the direction € as shown in Fig. As shown in Fig. 3, the weft yarn detection apparatus 20 includes a main body 30 of the apparatus and a cable 31 which is connected to the main body 30 of the apparatus.
    The main body 30 of the apparatus includes, for example, a rigid resin body and a metal outer plate which covers part of an outer surface of the resin body.
    The cable 31 is connected to the main body 30 of the apparatus for the purpose of supplying electricity and transmitting signals between the weft yarn detecting apparatus 20 and a control circuit (which is not shown) . A lens 32 is attached to the main body 30 of the apparatus.
    The lens 32 is disposed near the comb 15, in an orientation opposite to that of the weft yarn insertion passage S.
    Inside the main body 30 of the apparatus, there is disposed a printed circuit board 38 together with a light emitting element 35 and with a light receiving element 36.
    The light emitting element 35 and the light receiving element 36 form a detection device 37 which detects the arrival of the weft yarn.
    A principle such that the light emitting element 35 and the light receiving element 36 detect the arrival of the weft yarn will now be described.
    The light emitted by the light-emitting element 35 is condensed by the lens 32 and the weft yarn insertion passage S is
    | illuminated with condensed light.
    When the front end of the weft yarn 9 passes through a place corresponding to a projection of the light 9 in the weft yarn insertion passage S under the conditions indicated 9 above, the weft yarn reflects the light.
    The reflected light is condensed by the lens 32 and the condensed light is received by the light receiving element 36.
    An amount of the light received by the light receiving member 36 changes before and after the forward end of the weft yarn has passed through the location corresponding to the projection of light into the yarn insertion passage. frame S.
    By this is meant that the quantity of the light received by the light receiving element 36 changes significantly at the moment when the front end of the weft yarn passes through the place corresponding to a projection of the light. in the weft thread insertion passage.
    The weft yarn detecting apparatus 20 is capable of detecting the arrival of the weft yarn through a change in the amount of light received by the light receiving member 36.
    The light emitting element 35 and the light receiving element 36 are electrically connected to the circuit board 38. The circuit board 38 is equipped, for example, with a printed circuit board.
    A wiring diagram (which is not shown) is formed on one or both sides of the circuit board 38. The circuit board 38 is housed in the main body 30 of the apparatus and is attached to the body. main 30 of the device.
    The main body 30 of the apparatus has an attachment portion 40 for a cable, to which the cable 31 is attached.
    The cable 31 extends outside the securing portion 40 for a cable in a first direction DI.
    The first direction D]! represents a direction
    9 extending across the width of weft yarn detecting apparatus 20 [the lateral direction as shown in Fig. 3). The cable 31 is fixed 9 to the leaf 13 by the intermediary of fixing elements 39 as shown in Figures 1 and 2. The cable 31 extends through the tilting shaft 9 21 passing through the leaf blade 12 to be connected electrically to the control circuit (which is not shown). Two cable conductors 41 and 42 included in the cable 31 are extracted by pulling one end 31a of the cable 31, which is fixed to the portion 40 of the main body 30 of the device, for fixing a cable, 10 as described above. The cable conductors 41 and 42 are housed in the main body 30 of the apparatus, together with the circuit board 38. The number of the cable conductors 41 and 42 can be increased and can be decreased as required. The cable conductors 41 and 42 are extracted by pulling the end 3a of the cable 31 in a second direction D2 which is opposite to the first direction D! in the portion 40 for fixing a cable. The cable conductors 41 and 42 are electrically and mechanically connected to the circuit board 38 by means of soldering. One end of the cable conductor 41 is connected to the circuit board 38 to a solder portion 45 and one end of the cable conductor 42 is connected to the circuit board 38 to a solder portion.
    46.
    The main body 30 of the apparatus includes two side walls 48 and 49. One of the side walls 48 and 49, i.e. the side wall 48, has a protruding portion 50, but the other wall among the walls. sides 48 and 49, i.e. the side wall 49 does not have the protruding portion 50. The protruding portion 50 is realized by the fact that a part of the side wall 48 of the main body 30 of the apparatus protrudes
    {BE2020 / 5251 11 to the outside. The protruding portion 50 is intended for the formation of a | passage 52 for running the cable conductor inside the main body 30 of the apparatus. The passage 52 intended for the passage of the 9 cable conductor is designed for the passage of the conductors of 9 cables 41 and 42, from the portion 40 for fixing the cable, to 9 the circuit board 38. 9 The main body 30 of the apparatus has a mounting hole € 54 through which the main body 30 of the apparatus is mounted at a predetermined position on the loom. The mounting hole 54 is interposed between the circuit board 38 and the portion 40 for fixing the cable in a direction in height H of the weft yarn detection apparatus.
    20. According to the present embodiment, the main body 30 of the apparatus is fixed at a predetermined location of the leaf 13 in the longitudinal direction of the leaf 13 by using the bolt 23, as shown in Figures 1 and 2. A threaded portion of the bolt 23 is inserted through the mounting hole 54 of the main body 30 of the apparatus into the fixing groove 17 of the leaf 13. The mounting hole 54 is therefore formed through the main body 30. of the device. The mounting hole 54 is made in one piece with a recessed element 56. The recessed element 56 is integrated into the resin body of the main body 30 of the apparatus through an incorporation of at least one. part of the element 56 embedded in the resin body when the resin body is molded. The passage 52 for running the cable conductor is made to deflect around the mounting hole 54 and the recessed member 56 on one side in the second direction D2 (which is opposite to the first direction D1). A protrusion 58 is made in the passage 52 intended for the movement of the cable conductor. The
    # BE2020 / 5251: 12 protrusion 58 protrudes into the passage 52 intended for the passage of the 9 cable conductor to allow the cable conductors 41 and 42 9 to come into contact with the protrusion 58 when the cable 31 is pulled by 9 l 'intermediary of an external force (which will be described later). Specifically, the protrusion 58 is obtained by protruding beyond the solder portions 45 and 46 of the cable conductors 41 and 429 in the second direction D2. The protrusion 58 is made in order to obtain # a right angle turn. The corner portion of the protrusion 58 may be chamfered or may be rounded to achieve a rounded shape configuration. The protrusion 58 is made through a part of the resin body of the main body 30 of the apparatus, which allows the protrusion 58 to be made in one piece with the main body 30 of the apparatus. The protrusion 58 is made at a place in the passage 52 intended for the passage of the cable conductor, which is arranged from the portion 40 for the fixing of a cable to the circuit board 38.
    The main body 30 of the apparatus has a space for forming the passage 52 for the passage of the cable conductor and a space for accommodating the circuit board 38. These spaces are filled with resin 60. These spaces, inside the main body 30 of the apparatus, are filled with the resin 60 after fixing the circuit board 38 and the cable 31 to the main body 30 of the apparatus and after connecting the conductors of the device. cables 41 and 42 from cable 33 to circuit board 38 by soldering. The cable 31 is connected to the portion 40 for fixing a cable, of the main body 30 of the apparatus, through the resin 60. The space provided around the cable conductors 41 and 42 in the passage 52 intended for the movement of the cable conductor inside the main body 30 of the apparatus is also filled with the resin 60.
    {2020/5251 BE2020 / 5251 13 9 In the weft yarn detection apparatus 20 which has the # configuration as described above, external forces F1, F2 or F3 9 can be exerted on the cable 31, as shown in figure 4. Hereinafter, the external forces F1, F2 and F3 are referred to collectively as "external force Fa The external force F can be exerted on the cable 31. , for example when the mounting position of the weft yarn detecting apparatus 20 is subject to a change depending on the change in the weaving width or when the weft yarn detecting apparatus 20 is separated from the weft yarn detecting apparatus 20. loom for maintenance of the loom. In such cases, the external force F can be exerted in a significant way on the cable 31 when an operator is not paying attention to it. The external force F acts on the cable 31 in the direction of extraction of the cable 31 by pulling from the portion 40 for fixing the cable, of the main body 30 of the apparatus. When the cable 31 is pulled through the external force F, the resin 60 which connects the cable 31 to the portion 40 for fixing the cable can be separated depending on the strength of the tensile force caused by the cable. through the external force F. Such separation of the resin 60 causes the resin 60 to lose its bond strength. When the cable 31 is pulled through the external force F, the cable 31 can be moved in the first direction D1.
    When the cable 31 is pulled through the external force F and is moved, the cable conductors 41 and 42 are also pulled together with the cable 31 in the first direction DJ. Accordingly, the resin 60 can also be separated at a boundary surface between the cable conductors 41 and 42 and the resin 60 in the passage 52 for the passage of the cable conductor.
    | 14 # The separation of the resin 60 in the passage 52 for the passage of the cable conductor moves the cable conductors # 41 and 42. However, before the tensile force caused by the movement of the cable conductors 41 and 42 is exerted on the 9 5 portions of solder 45 and 46, the cable conductors 41 and 42 approach the protrusion 58 or come into contact with the latter in a deflection portion of the passage 52 intended for the movement of the cable conductor , as indicated by a circle B which is shown in FIG. 4, which makes it possible to distribute a part of a load, which is in the process of being placed on the solder portions 45 and 46 due to the movement of the conductors cables 41 and 42, on portions of the cable conductors 41 and 42 which approach the protrusion 58 or which come into contact with the latter. This configuration makes it possible to reduce the load which is in the process of coming to be placed on the solder portions 45 and 46 of the cable conductors 41 and 42 when the cable 31 is pulled by means of the external force F, and in this way reduces the occurrence of disconnection failure caused by the separation of the solder portions 45 and
    46. Without taking into account the separation of the resin 60 at the delimiting surface between the cable conductors 41 and 42 and the resin 60, the passage 52 intended for the movement of the cable conductor which contains the deflection portion around the hole of mounting 54 towards the side in the second direction D2 makes it possible to reduce the load which must come to be placed on the solder portions 45 and 46, because of the friction which is obtained between the cable conductors 41 and 42 and the resin 60 to the deflection portion, with respect to the passage 52 for the passage of the cable conductor which does not have the deflection portion. In accordance with the present embodiment, the passage 52 for the passage of the cable conductor is designed for the purpose of
    9 deflection around the mounting hole 54 of the main body 30 of the 9 apparatus from the side corresponding to the second direction D2 which is # opposite to the first direction D1, thereby forming the protrusion 9 58 at a location in the passage 52 for the passage of the cable conductor, while a dimension of the main body 30 of the apparatus remains reduced.
    According to the present embodiment, the side wall selected from the side walls 48 and 49 of the main body 30 of the apparatus, i.e. the side wall 48 has the protruding portion 50 which is intended to form the passage 52 for the passage of the cable conductor, thereby reducing the size of the weft yarn detecting apparatus 20 relative to the weft yarn detecting apparatus 20 in which the passage 52 intended or scrolling of the cable conductor is made in the form of an element provided separately from the main body 30 of the apparatus.
    权利要求:
    Claims (1)
    [1]
    : | 16 # CLAIMS 9 1. Weft yarn detection apparatus (20) of a loom {1}, the weft yarn detection apparatus {20} detecting an arrival of a weft yarn which must be inserted, comprising: a detection device (37) which detects the arrival of the weft yarn: a circuit board (38) electrically connected to the detection device (37): a main body (30) of the apparatus in which is housed the circuit board (38) and which has a portion (40} for fixing a cable; and a cable (31} including a cable conductor (41, 42} which is connected to the board of circuits (38) to a solder portion (45, 46), the cable {31} being fixed to the portion {40} for fixing a cable, of the main body (30) of the apparatus, characterized in that the cable (31) extends outside the portion {40} for fixing a cable, in a first direction (D1}; the cable conductor (41, 42) is extracted by pulling d 'an extremity (31a} of the cable (31) in the portion {40} for fixing a cable in a second direction {D2) which is opposite to the first direction [DI]: the main body {30} of the device has a passage (52) for the passage of a cable conductor, formed inside the main body {30} of the apparatus, adapted for the movement of the cable conductor (41, 42} from the portion ( 40} for fixing a cable to the circuit board (38);
    {BE2020 / 5251 | 17 the main body (30) of the device has a mounting hole
    9 (54) through which the main body (30} of the apparatus is mounted in: a predetermined position on the loom; and 9 the passage (52) for the passage of the cable conductor is 9 formed at ends of deviation around the mounting hole (54) on one side: opposite to the first direction {DI}. $ 2. Weft yarn detection apparatus [20] of the loom {1} according to claim 1, characterized in that one side wall among the side walls (48, 49) of the main body (30) of the apporeil has a protruding portion {50} for forming the passage (52) for the passage of the cable conductor
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    同族专利:
    公开号 | 公开日
    CN111850780A|2020-10-30|
    JP2020180388A|2020-11-05|
    BE1027179A1|2020-11-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0514320A1|1991-05-15|1992-11-19|Sulzer RàœTi Ag|Electrostatic weft-detector and loom with such weft-detector|
    KR19990007898U|1998-11-02|1999-02-25|허기호|Weft detector for air jet looms using integrated transmission and reception elements.|
    KR20130104699A|2012-03-15|2013-09-25|주식회사 금강시스템|Weft sensing device for air jet loom|
    KR800001668B1|1977-09-07|1980-12-31|이시하라 다가시|Weft feeler|
    JP2649206B2|1993-06-23|1997-09-03|日本セレン株式会社|Weft flight detector for shuttleless loom.|
    CN1589093A|2004-08-13|2005-03-02|广州金升阳科技有限公司|Method for improving fine enamelled wire spot welding strengh in spot welding|
    CN101423999A|2007-12-17|2009-05-06|西安工程大学|Slice type bobbin feeler for pipe|
    CN205188559U|2015-11-25|2016-04-27|南通鲁润纺织机械有限公司|Latitude structure is visited to air jet loom's pipeline formula photoelectricity|
    法律状态:
    2021-05-31| FG| Patent granted|Effective date: 20210427 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2019082607A|JP2020180388A|2019-04-24|2019-04-24|Weft detecting device for loom|
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