JP2010281017A - Loom shedding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shedding shaft support structure capable of removing the distortion of shedding shafts as much as possible, in a loom shedding device comprising a plurality of the shedding shafts which are extended in the width direction of the loom below heddle frames, are disposed in response to a plurality of the heddle frames, respectively, and are connected to the corresponding heddle frames through shedding levers, a driving device connected to swinging levers fixed to the shedding shafts to swing the swinging levers, and a bearing device for rotatably supporting the shedding shafts through bearings disposed therein. <P>SOLUTION: This loom shedding device is characterized in that the bearing device comprises a bearing portion having a penetrated hole into which a bearing is inserted and fit, and a support portion which is extended in the axes of the shedding shafts, whose one end is fixed to the lateral side of the inner side of the loom frame and whose other end supports the bearing portion. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an opening device for a loom, in particular, an opening shaft extending in the width direction of the loom below the rib frame, provided corresponding to each of the plurality of rib frames, and corresponding via an opening lever. A plurality of opening shafts connected to the frame, a driving device connected to a swing lever fixed to the opening shaft to drive the swing lever, and the opening shaft via a built-in bearing The invention relates to an opening device of a loom of the type including a bearing device that rotatably supports a roller.

  There exists a thing disclosed by patent document 1 as an opening device of the said type. In the opening device disclosed in Patent Document 1, the frame is connected to the opening shaft via a turnbuckle (connecting rod) and an opening lever. The opening shaft is provided so as to extend in the width direction of the loom below the heel frame between the left and right loom frames (hereinafter also simply referred to as “frame”) (under the weaving side from directly below). Further, a plurality of opening shafts are provided according to the number of collar frames. And the connection rod connected with the lower surface of the both ends of the collar frame in the width direction is connected with the opening lever assembled | attached so that relative rotation with respect to the opening shaft was impossible. With this configuration, the vertical frame positions are supported by the corresponding opening shafts via the connecting rods and the opening levers.

  In addition, in the opening device disclosed in Patent Document 1, a positive cam type driving device is adopted as a configuration for rotating the opening shaft. This cam drive device is provided on one side of the left and right frames, and each cam plate is provided via a cam follower by the action of a positive cam comprising a pair of cam plates that are rotationally driven as the cam shaft rotates. The cam lever abutting on the peripheral surface of the cam lever is driven to swing, and the cam lever shaft fixed to the cam lever is driven to rotate. Along with this, the opening shaft connected to the cam lever shaft via the link mechanism is rotationally driven, and the eaves frame moves vertically by the swinging motion of the opening lever accompanying the rotation of the opening shaft.

  By the way, although not explicitly disclosed in Patent Document 1, the opening shaft is rotatably supported by the loom frame via a bearing or the like at both ends thereof. However, the opening shaft is a long member. In addition, the opening shaft is subjected to a load such as a frame through an opening lever connected to the frame, so that the opening shaft is bent only by supporting both ends. It will occur. Then, when the opening shaft is bent, there arises a problem that a desired opening motion (opening amount or the like) cannot be obtained by affecting the behavior of the eaves frame.

  Therefore, in a loom, a bearing device including a bearing and a bracket (bearing case) that supports the bearing is attached to a fixed portion of the loom, and the opening shaft is supported in the vicinity of the opening lever by the bearing device. . Further, in a conventional loom, the bearing device is generally provided on a beam constructed between the left and right frames. That is, in the conventional loom, both ends are supported by the frame, and the vicinity of the opening lever is supported by a beam as a support body that is installed and fixed between the left and right frames via the bearing device. An opening shaft support structure is adopted.

  However, even with the conventional support structure for the opening shaft as described above, there arises a problem that a desired opening motion cannot be obtained when the loom is operated at a high speed or at a high load. That is, when the loom is operated at a high speed or a high load, the load applied to the opening shaft increases with the opening movement. In that case, in the conventional loom, the vicinity of the opening lever, which is the load point, is supported by a long beam, so the beam is applied by the above-mentioned load or the load of the eaves frame (hereinafter collectively referred to as “load etc.”). Will bend. In addition, the beam may be bent due to the influence of vibration during the operation of the loom. When the support beam is bent, the opening shaft supported by the beam also bends accordingly. As in the case described above, the desired opening motion cannot be obtained. End up.

JP 58-132135 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a support structure for an opening shaft that can eliminate the bending of the opening shaft as much as possible in the opening device of a loom of the type described above.

  Under the above-mentioned problems, the present invention provides an opening device for a loom of the type described above, wherein the bearing device has a bearing portion having a through hole into which the bearing is inserted, and extends in the axial direction of the opening shaft and has one end. And a support portion that is fixed to the inner side surface of the loom frame and supports the bearing portion on the other end side.

  The “inner side of the loom frame” in the above refers to the center side of the warp row in the width direction of the loom, that is, the position on the warp row side with respect to the loom frame. In addition, the outside of the frame in the present specification refers to a position opposite to the above, that is, a position on the side away from the center of the warp row in the width direction of the loom. Incidentally, the “width direction of the loom” refers to a direction parallel to the width direction (longitudinal direction) of the rib frame (hereinafter, also simply referred to as “width direction”).

  In the opening device of the loom according to the present invention, the support portion in the bearing device is supported at at least two positions, ie, a position above and below the center of the opening shaft in the vertical direction around the outer peripheral surface of the opening shaft. It is good also as what to do.

  Moreover, it is good also as what has a pair of bearing which arrange | positioned the bearing part in a bearing apparatus at intervals in the axial direction of an opening axis | shaft, and is arrange | positioned so that the pair of bearings may be located in the both sides of an opening lever.

  Furthermore, when the opening device of the present invention is applied to a water jet loom, it is preferable that the bearing portion has a water shielding structure that prevents at least water from entering a through hole into which the bearing is inserted. .

  According to the loom opening device of the present invention, the bearing device that supports the opening shaft in the vicinity of the position of the opening lever that is the load point bends even if the load applied through the opening shaft acts on the support portion. It is supported by a loom frame that is difficult to deform. Therefore, the deflection of the opening shaft due to the deformation of the support (beam) as in the conventional support structure hardly occurs. Therefore, even when the loom is operated at a high speed or under a high load, the occurrence of deflection of the opening shaft is suppressed as much as possible, and a desired opening motion can be obtained even during the operation as described above.

  Further, if the support part in the bearing device is configured to support the bearing part at at least two positions, a position above and below the center of the opening shaft in the vertical direction around the outer peripheral surface of the opening shaft, Compared to a configuration in which the bearing portion is supported by only a part, the support rigidity of the entire support portion can be increased, and the support strength of the bearing portion by the support portion can be increased. Thereby, the deformation of the support part due to the load applied to the support part via the bearing part can be reduced or eliminated, the displacement of the bearing part accompanying the deformation of the support part is suppressed, and the opening shaft accompanying the displacement of the bearing part is suppressed. Can be prevented as much as possible.

  Further, if the bearing device is configured to support the opening shaft on both sides of the position of the opening lever that is the load point by a pair of bearings that are spaced apart in the axial direction of the opening shaft in the bearing portion, the bearing device Since the supporting strength of itself increases, the deflection of the opening shaft due to a load or the like can be more effectively suppressed.

  Further, when the opening device according to the present invention is applied to a water jet loom, it is possible to extend the life of the bearing in the bearing device by making the bearing portion have a water shielding structure. That is, in the case of the water jet loom, water sprayed from the weft insertion nozzles is scattered for weft insertion in the inner regions of the left and right loom frames. For this reason, the bearing device existing in the region is also exposed to the scattered water. And if water intrudes into the bearing part, the bearing built in the bearing part deteriorates in the lubrication state due to the influence of water, and the performance deteriorates at an early stage and the life becomes short. On the other hand, if the bearing portion has a water shielding structure, the influence of water on the bearing can be eliminated or reduced, and the life of the bearing can be improved and the life can be extended.

The perspective view which shows one Embodiment of the opening device by this invention. The cross-sectional front view which shows one Embodiment of the opening device by this invention. The partial cross section top view which shows one Embodiment of the opening device by this invention. The cross-sectional front view which shows the principal part in one Embodiment of the opening device by this invention. The perspective view which shows an example of the opening apparatus with which this invention is applied. Side surface sectional drawing which shows other embodiment regarding the principal part of the opening apparatus by this invention. Front sectional drawing which shows other embodiment regarding the principal part of the opening apparatus by this invention.

  1 to 5 show an embodiment of an opening device for a loom according to the present invention, and show the periphery of a loom frame 1 on the right side when the loom is viewed from the woven fabric winding side. The loom shown in the figure includes four reed frames 2 and divides them into two sets of two pieces, and each set of reed frames 2 is moved up and down in the opposite directions by the opening device 3 so that the reeds are not shown. It is assumed that an opening motion is given to a warp row composed of a large number of warp yarns (not shown) supported by each reed frame 2 via the.

  The opening device 3 includes two opening shafts 10 and 10 provided corresponding to the respective sets of the frame 2 and a cam type as a driving device for rotationally driving the opening shafts 10 and 10. A drive device (hereinafter simply referred to as “cam drive device”) 20, which includes two cam lever shafts 21, 21 corresponding to the respective opening shafts 10, 10, and each opening shaft 10, 10 And a pair of link mechanisms 30, 30 that connect the corresponding cam lever shafts 21, 21.

  The two opening shafts 10, 10 are arranged in the vertical direction at a position below the heel frame 2 in the vertical direction and in the front-rear direction (warp direction) on the front side F of the weave frame 2 from just below the heel frame 2. Yes. The two opening shafts 10 and 10 are supported by a first bearing device 40 fixed to the inner side surface of the frame 1 and a second bearing device 50 fixed to the outer side surface of the frame 1. That is, each opening shaft 10 is provided in a state of penetrating the frame 1, and is rotatable with respect to the frame 1 by a plurality of bearings built in the first and second bearing devices 40 and 50 fixed to the frame 1. It is supported by. Further, the end of each opening shaft 10 on the cam drive device 20 side extends so as to protrude from the second bearing device 50 outside the frame 1.

  An opening lever 14 is assembled to each opening shaft 10 through a key 10a formed on each opening shaft 10 at a position corresponding to each of both end portions of the collar frame 2 in the width direction. Each opening lever 14 is provided with a connecting rod 14a, and each connecting rod 14a is connected to a connecting tool 14b attached to the lower surface of the collar frame 2 at its tip. Accordingly, each flange frame 2 is supported at both ends in the width direction by a pair of opening levers 14 attached to the corresponding opening shaft 10 via the connecting rod 14a.

  By the way, in the example shown in the figure, if the four frame frames 2 are the first frame,..., The fourth frame from the pre-weave F side, the upper opening shaft 10 corresponds to the first and third frames, The opening shaft 10 corresponds to the second and fourth frames. Accordingly, the first and third frames are moved up and down in the same direction as one set, and the second and fourth frames are moved up and down in the opposite direction to the first and third frames. In addition, the attachment position of the opening lever 14 with respect to the upper and lower opening shafts 10 and 10 is set to a different position in the width direction for each opening shaft 10.

  The cam drive device 20 includes a cam box 29, a pair of cam plates 23, 23 housed in the cam box 29, and two cam levers 25, 25 that come into contact with the cam plates 23, 23 via cam followers. Including.

  The cam box 29 is composed of a housing 29a having a U-shaped cross section in the width direction in which the side portion on the side of the warp yarn row in the width direction is opened, and a lid 29b attached to the open portion of the housing 29a. In other words, the side wall on the side of the warp row in the width direction of the cam box 29 is formed by a removable lid 29b. Further, the cam box 29 has a plurality of mounting portions 29c, 29c,... At positions adjacent to the lid 29b on the peripheral surface of the housing 29a. The cam plates 23 and 23 and the cam levers 25 and 25 are housed in the cam box 29.

  In the illustrated example, the cam box 29 is provided so that most of the cam box 29 is located within the frame 1 in the width direction of the loom. Specifically, a through hole in which the cam box 29 is fitted to the inner and outer side plates is formed at a position where the cam box 29 is provided in the frame 1, and the cam box 29 is attached to the frame 1 through the through hole. It is installed in the state where it was inserted.

  The cam plates 23 and 23 are supported by a cam shaft 27 in the cam box 29. The cam shaft 27 is rotatably supported with respect to the cam box 29, extends in the width direction, penetrates the lid 29 b of the cam box 21, and protrudes from the cam box 29 toward the outer side of the frame 1. Is provided. Then, the cam shaft 27 is rotationally driven by a drive mechanism described later connected to the protruding end portion.

  The cam driving device 20 has cam lever shafts 21 and 21 provided corresponding to the two opening shafts 10 and 10 respectively. Each cam lever shaft 21 is provided so as to extend in parallel with the cam shaft 27 and, like the cam shaft 27, is rotatably supported with respect to the cam box 29 and provided so as to protrude from the cam box 29. ing. A cam lever 25 is assembled to each cam lever shaft 21 so as not to be relatively rotatable. Incidentally, each cam lever 25 is formed in a bifurcated shape including a base portion having a through hole through which the cam lever shaft 21 is inserted, and a pair of arms extending in an arc shape in the opposite directions from the base portion along the rotation locus of the cam plate 23. Then, a pair of cam plates 23 and 23 are in contact with each other through cam followers that are rotatable at the ends of the arms.

  In the cam mechanism in the cam drive device 20, each cam lever 25 is driven to reciprocate by the rotation of the cam plates 23, 23 accompanying the rotation drive of the cam shaft 27, and the cam lever shaft 21 is driven to rotate accordingly. Therefore, this cam mechanism constitutes a positive cam mechanism (positive cam mechanism).

  Each cam lever shaft 21 is connected to the corresponding opening shaft 10 by a link mechanism 30 at the tip end portion (end portion on the counter warp yarn row side) of the protruding portion. That is, each link mechanism 30 is disposed outside the frame 1 and on the side opposite to the warp yarn row from the cam box 29, and connects the cam lever shaft 21 and the opening shaft 10 at that position. In the illustrated example, both link mechanisms 30 and 30 that connect the upper and lower cam lever shafts 21 and the opening shaft 10 are provided symmetrically in the vertical direction.

  Each link mechanism 30 is attached to a crank lever 31 that is fixed to the cam lever shaft 21 so as not to rotate relative to the tip end portion, and to a portion that protrudes from the second bearing device 50 relative to the opening shaft 10 so as not to rotate relative to each other. The swing lever 33 and the connecting rod 35 that connects the crank lever 31 and the swing lever 33 are mainly configured. Note that the positions of the crank lever 31 and the swing lever 33 outside the frame 1 are set to substantially the same position in the width direction of the loom.

  With respect to each link mechanism 30, the crank lever 31 and the swing lever 33 are so-called at one end of the corresponding cam lever shaft 21 and the opening shaft 10 via a key formed on one side and a key groove formed on the other side. It is fixed by a cleaving structure. The other ends of the crank lever 31 and the swing lever 33 are formed in a bifurcated shape for receiving the connecting rod 35. Further, the connecting rod 35 has through holes at both ends thereof, and bearings (not shown) are fitted into the through holes. The other end of each of the crank lever 31 and the swing lever 33 is rotatably connected to the connecting rod 35 via connecting pins 31a and 33a fitted into the bearings at both ends of the connecting rod 35.

  The drive mechanism for rotationally driving the cam shaft 27 described above uses the main drive motor 5 for rotationally driving the main shaft 4 as a drive source. In the illustrated example, the main drive motor 5 is installed on the upper surface of the frame 1 by a bracket or the like. In addition, the crankshaft 6 is rotatably supported by the frame 1 with bearings in a state of penetrating the frame 1. The main shaft 4 is connected to the crankshaft 6 so as not to rotate relative to the inner side of the frame 1 by a shaft coupling 4a.

  A motor pulley 5 b is attached to the output shaft 5 a of the main drive motor 5, while a drive pulley 6 a is attached to the outer end of the frame 1 of the crankshaft 6. Furthermore, the motor pulley 5b and the drive pulley 6a are connected by a V-belt 7a wound around both pulleys. With this configuration, the rotation of the output shaft 5a of the main drive motor 5 is transmitted to the crankshaft 6 via the motor pulley 5b, the V belt 7a and the drive pulley 6a, and the crankshaft 6 and the main shaft 4 are rotationally driven by the main drive motor 5. Is done.

  A timing pulley 6b is attached to the drive pulley 6a on the side opposite to the frame 1. The timing pulley 6b is fixed coaxially and non-rotatably to the drive pulley 6a by a screw member screwed around a through hole that receives the tip of the crankshaft 6 in the drive pulley 6a. On the other hand, a timing pulley 27 a is attached to the tip of the cam shaft 27 in the cam drive device 20. The timing pulley 6b and the timing pulley 27a are connected by a timing belt 7b wound around both pulleys. With this configuration, as the main shaft 4 is driven to rotate by the main drive motor 5, the rotation of the drive pulley 6a is transmitted to the cam shaft 27 via the timing pulley 6b, the timing belt 7b, and the timing pulley 27a. 27 is rotationally driven.

  In the loom opening device 3 described above, the opening shaft 10 is supported by the first and second bearing devices 40 and 50 fixed to the frame 1 as described above. In the illustrated example, the both bearing devices 40 and 50 are formed as a single device corresponding to both of the two opening shafts 10 and 10 (hereinafter also referred to as “opening shaft group”). Yes.

  The second bearing device 50 mainly includes a bearing case 51 having through holes 53 and 53 formed corresponding to the two opening shafts 10 and 10, and is fitted in the through holes 53 and 53. Bearings 55 and 55 such as ball bearings are included. The second bearing device 50 is fixed to the outer side surface of the frame 1 by a plurality of screw members in the flange portion 51 a of the bearing case 51.

  The first bearing device 40 corresponding to the bearing device of the present invention surrounds the support member 41 fixed to the frame 1 and the position where the opening lever 14 of the opening shaft 10 is attached while being supported by the support member 41. Mainly a bearing case comprising a case member 43 provided in this manner. In the illustrated example, the mounting position of the opening lever 14 that is the load point of the opening shaft 10 (hereinafter simply referred to as “load”) is provided by a bearing such as a ball bearing or the like housed in a bearing case composed of the support member 41 and the case member 43. It is configured to support both sides.

  The support member 41 in the first bearing device 40 includes a body portion 41 a having through holes formed corresponding to the two opening shafts 10 and 10, and an axial direction of the opening shaft 10 (hereinafter simply referred to as “ And flange portions 41b and 41b integrally formed at both end portions of the body portion 41a. In the configuration shown in the figure, the body portion 41a has a longitudinal section (a section in a direction perpendicular to the axial direction) in which two through holes 41c and 41d are formed on both side portions (portions close to the flange portion 41b) in the axial direction. ) Although it is formed in an approximately 8-character shape, the intermediate part in the axial direction is formed in an approximately O-shaped longitudinal section with both through-holes communicating with each other. The support member 41 is formed by a plurality of screw members (not shown) that are fitted into the flange portion 41b and screwed into the frame 1 in the flange portion 41b on the side close to the frame 1 in the axial direction (frame 1 side). The frame 1 is fixed to the inner side surface.

  Further, in the illustrated example, bearings B1 and B2 are fitted in the through holes 41c and 41d on both side portions (portions formed in a substantially 8-shaped vertical section) of the support member 41. That is, the support member 41 includes bearings B1 and B2 in each of two through holes 41c and 41d that are formed apart from each other in the axial direction, and the through holes 41c and 41d and the bearings B1 and B2 are connected to the respective opening shafts 10. It has to correspond to.

  Regarding these bearings B1 and B2, the bearing B1 provided in the through hole 41c on the frame 1 side supports the opening shaft 10 in the vicinity of the frame 1. Accordingly, the bearing B1 supports the opening shaft 10 in the vicinity of the frame 1 in cooperation with the bearing 55 provided in the bearing device 50. On the other hand, the bearing B2 housed in the through hole 41d on the side far from the frame 1 (on the side opposite to the frame 1) supports the opening shaft 10 in the vicinity of the load point on the opening shaft 10. Therefore, the bearing B2 housed in the through hole 41d on the side opposite to the frame 1 corresponds to the bearing in the present invention.

  Furthermore, bearing pressers 41f and 41f provided for the respective through holes 41d are provided at the end of the support member 41 on the side opposite to the frame 1. Each bearing retainer 41f is attached at its flange portion by a plurality of screw members that are screwed onto the end surface of the support member 41c on the side opposite to the frame 1 side. Each bearing retainer 41f has a through hole having a diameter larger than the diameter of the opening shaft 10, and a portion closer to the support member 41 than the flange portion is fitted into the through hole 41c. A seal member S1 is interposed in the gap between the through hole of each bearing retainer 41f and the opening shaft 10 inserted therethrough. Thus, in the support member 41, the through hole 41d in which the bearing B2 supporting the opening shaft 10 in the vicinity of the load point is internally closed is closed by the seal member S1.

  On the other hand, the case member 43 in the first support member 40 is a bowl-shaped member having an opening for the opening lever 14 attached to the opening shaft 10 while having a space through which the opening shaft group passes. More specifically, the case member 43 is a casing in which a body portion 43c composed of upper and lower walls and a side wall on the side of the repellent frame 2 (rear side) in the warp direction, and both side walls 43d and 43d in the axial direction are integrally formed. Further, the side wall portion on the side of the heel frame 2 (front side) in the warp direction of the case member 43 allows the opening lever 14 attached to the opening shaft 10 to protrude from the inside of the case member 43 and enables swinging movement. Therefore, it is totally open. Incidentally, in the configuration shown in the figure, the rear side wall is formed in an arc shape in accordance with the opening shaft 10 passing through the inside. Therefore, the longitudinal cross-sectional shape of the trunk | drum 43c (part consisting of an up-and-down wall and a rear side wall) between the both-side walls 43d and 43d of the case member 43 is a substantially 3 character shape by which the front surface was open | released.

  In addition, through holes for inserting the two opening shafts 10 and 10 are formed in both side walls 43 d and 43 d in the axial direction of the case member 43. Among these through-holes, the through-hole 43a formed in the side wall 43d on the side close to the support member 41 (support member 41 side) is a portion outside the flange portion of the bearing retainer 41f fixed to the support member 41. It is formed according to the outer diameter. Then, the case member 43 and the support member 41 are combined in a state where the above-mentioned portion of the bearing retainer 41f is inserted into the through hole 43a. In this state, the case member 43 and the flange portion 41b on the side opposite to the frame 1 are fitted. The case member 43 is fixed to the support member 41 fixed to the frame 1 by a plurality of screw members (not shown) that are inserted and screwed into the end portion of the case member 43 on the support member 41 side. As a result, the case member 43 is supported by the frame 1 via the support member 41.

  Further, the side wall 43d on the side farther from the support member 41 (on the side opposite to the support member 41) in the case member 43 is formed thicker than the side wall on the support member 41 side, and a ball bearing or the like is formed in the through hole 43b. The bearing B3 is fitted. Therefore, the load point in the opening shaft 10 is supported on both sides by the bearing B2 on the side opposite to the frame 1 housed in the support member 41 and the bearing B3 housed in the case member 43. Therefore, this bearing B3 also corresponds to the bearing in the present invention.

  Further, in each through hole 43b in which the bearing B3 in the case member 43 is housed, seal members S2 and S3 are interposed in a gap between the opening shaft 10 on both sides of the bearing B3 in the axial direction. More specifically, the body 43c side of the through-hole 43b in which the bearing B3 is housed is formed with a smaller diameter than the portion where the bearing B3 is disposed, and the seal member S2 is housed in that portion. On the other hand, a bearing retainer 43f is attached to the end of the case member 43 on the side opposite to the support member 41 for each through hole 43b. The bearing retainer 43f has a through hole having a diameter larger than the diameter of the opening shaft 10, and a portion closer to the case member 43 than the flange portion is fitted into the through hole 43b. A seal member S3 is interposed in a gap between the through hole of each bearing retainer 43f and the opening shaft 10 inserted therethrough. Each bearing retainer 43f is fixed to the end surface of the case member 43 on the side opposite to the support member 41 with a plurality of screw members at the flange portion.

  Therefore, each through-hole 43b formed in the side wall 43d on the side opposite to the support member 41 in the case member 43 has its openings on both sides closed by the seal members S2 and S3, and an area in which the bearing B3 is disposed. It is isolated from the inner area of the frame 1 where water scatters with the weft insertion. That is, in the illustrated configuration, the case member 43 has a water shielding structure that prevents water from entering a region where the bearing B3 is disposed in each through hole 43b.

  Further, the through hole 41d of the support member 41 in which the bearing B2 that supports the load point of the opening shaft 10 in cooperation with the bearing B3 provided in the case member 43 is provided is the through hole of the bearing retainer 41f as described above. Is closed by the seal member S <b> 1, thereby disconnecting the case member 43 from the internal space. Accordingly, in the illustrated configuration, the internal space of the case member 43 communicates with the inner region of the frame 1, but the region where the bearing B2 is disposed in the through hole 41d is the case member 43 of the through hole 41d. The opening on the side is closed by the bearing retainer 41f and the seal member S1, thereby being isolated from the inner region of the frame 1. That is, the support member 41 also has a water shielding structure that prevents water from entering the region where the bearing B2 is disposed in the through hole 41d.

  Incidentally, the through-hole 41d in which the bearing B2 is housed also opens at an intermediate portion on the frame 1 side. However, the space in the middle part communicates only with the through holes 41c and 41d on both sides thereof, and does not communicate directly with the outside. Accordingly, the through hole 41d in which the bearing B2 is housed communicates with the outside only at the opening on the frame 1 side of the through hole 41c on the frame 1 side. Therefore, when the support member 41 is fixed to the side surface of the frame 1, the communication between the through hole 41c on the frame 1 side and the region on the inner side of the frame 1 is cut off. There is no water intrusion.

  In the above description, the bearing device supported by the right frame 1 when the loom is viewed from the woven fabric winding side has been described with reference to the drawings. However, the opening shaft 10 is supported by the left loom frame. The bearing device to be used has basically the same configuration and is symmetrical to the configuration shown in the drawing.

  In the illustrated example, one of the bearings B <b> 2 and B <b> 3 supporting the load point on the opening shaft 10 is housed in the support member 41, and the other bearing B <b> 3 is housed in the case member 43. Therefore, in the illustrated example, a part of the support member 41, specifically, a part in which the through hole 41 d in which the bearing B <b> 2 is housed in the support member 41 is formed also functions as the “bearing part” in the present invention. In other words, the “bearing portion” in the illustrated example is obtained by adding the portions of the case member 43 and the support member 41. In this case, the “support portion” in the present invention is the remaining portion of the support member 41.

  Then, according to the bearing device (first bearing device 40) based on the present invention described above, the bearings B2 and B3 that support the opening shaft 10 in the vicinity of the load point are the support portions fixed to the frame 1. Since the load is applied to the frame 1 as the support through the support member 41, the frame 1 is not deformed by the load, and the like. For example, the deflection of the opening shaft 10 due to the displacement of the bearing portion of the bearing device can be prevented.

  Further, in the configuration shown in the figure, the support member 41 has a structure that surrounds the opening shaft group by combining two cylinders, and the load is applied to the opening shaft 10 via the opening lever 14 in a substantially vertical direction. It has a structure that can sufficiently cope with it. If the support portion undergoes a large deformation or the like due to the action of the load or the like, the bearing portion is displaced accordingly, and the opening shaft supported by the bearing portion bends. However, as shown in the configuration, if the support portion has a structure that can sufficiently cope with the above-described load or the like, even if a load or the like acts, the support portion does not undergo a large deformation or the like. It is difficult for the opening shaft 10 to be bent due to deformation of the support portion or the like.

  Further, in the configuration shown in the figure, the case member 43 also has a structure in which a body portion 43c that surrounds the opening shaft group in three directions and side walls 43d and 43d are integrally formed, and a structure that can cope with a load or the like. Have. Accordingly, as shown in the configuration, in the case where the bearing B3 that supports the opening shaft 10 is provided at a position separated from the support member 41, a load or the like acts on the case member 43 via the bearing B3. However, the deformation of the case member 43 due to the deformation hardly occurs, and the deflection of the opening shaft 10 due to the deformation of the case member 43 hardly occurs.

  In the illustrated configuration, the first bearing device 40 is configured to support the opening shaft 10 with bearings B2 and B3 provided on both sides of the load point. Thereby, the load applied to the load point in the opening shaft 10 is divided into two and acts on the bearings B2 and B3. Therefore, the bending load acting on the case member 43 fixedly supported by the support member 41 via the bearing B3 corresponds to a size obtained by dividing the above-described load and the like into two. On the other hand, the support member 41 is fixed to the frame 1 at one end in the axial direction, and supports the load or the like acting via the case member 43 and the bearings B2 and B3 on the other end side. It can be said that the bending load acting on is considerably larger than that acting on the case member 43. Therefore, the case member 43 is less affected even if the support rigidity is lower than that of the support member 41, and there is no problem even if the opening member 14 has an opening.

  Further, if the opening shaft 10 is supported on both sides of the load point as described above, a high support strength can be obtained, so that the bending of the opening shaft 10 can be effectively prevented. A combination of these configurations can provide a configuration in which the bearing device itself has high rigidity and high support strength.

  Further, in the illustrated configuration, each of the through holes 41d and 43b in which the bearings B2 and B3 in the support member 41 and the case member 43 are housed has a water-blocking structure in which the opening portions are closed by the seal members S1, S2, and S3. Therefore, the bearings B2 and B3 are not affected by water scattered in the region between the left and right frames 1, and the life of these bearings B2 and B3 can be extended.

  Although the configuration of the loom opening device according to the present invention shown in FIGS. 1 to 5 has been described above, the bearing device (first bearing device 40) according to the present invention can be modified as follows. is there.

  1) In the illustrated example, the support member 41 includes a bearing B1 disposed in the vicinity of the frame 1 in addition to the bearing B2 disposed in the vicinity of the load point on the opening shaft 10. The bearing B1 can be omitted.

  2) In the illustrated example, among the bearings B2 and B3 disposed in the vicinity of the load point on the opening shaft 10, the bearing B2 on the frame 1 side is assumed to be housed in the support member 41. The case member 43 may be provided in a through hole 43a formed in the side wall 43d on the frame 1 side. In that case, the support member 41 in the first bearing device 40 functions as a support portion, and the case member 43 functions as a bearing portion.

  3) In the illustrated example, the bearings B2 and B3 are disposed on both sides of the load point to support the opening shaft 10. However, the present invention is not limited to this, and any one of the bearings is used. The configuration may be such that the opening shaft 10 is supported only on one side of the frame 1 or the opposite side of the frame 1 in the vicinity of the load point. For example, in the illustrated configuration, the case member 43 and each member housed therein may be omitted, and the opening shaft 10 may be supported only by the bearing B2 housed in the support member 41 in the vicinity of the load point. In the illustrated configuration, the bearing B2 may be omitted, and the opening shaft 10 may be supported only by the bearing B3 in the vicinity of the load point. However, in the case of the structure, the trunk | drum 43c in the case member 43 and the side wall 43d by the side of the flame | frame 1 function as a support part in this invention.

  4) In the example shown in the figure, as a water-blocking structure for the bearings B2 and B3, seal members S1, S2, and S3 are provided in the opening portions of the through holes 41d and 43b in which the bearings B2 and B3 are housed, and the through holes 41d are provided. , 43b has a structure that blocks water from entering the region where the bearings B2 and B3 are disposed. In addition to this, a water shielding member that covers the opening on the front side of the case member 43 as a water shielding structure is provided. May be added. However, since the opening lever 14 reciprocates in the vertical direction in the opening portion of the case member 43, it is necessary to allow the movement of the opening lever 14. As such a water-impervious member, for example, a member in which the opening of the case member 43 is covered with a sheet material having elasticity such as rubber and a slit (cut) is formed at the position of the opening lever 14 is conceivable.

  Furthermore, as a thing with higher water-imperviousness, for example, the opening of the case member 43 is formed using a sheet-like cover formed of rubber having elasticity (elasticity) or a bellows-shaped cover formed in a bellows shape. It is conceivable that the opening lever 14 penetrates the cover and the cover is fixed to the peripheral surface of the opening lever 14 at the penetrating portion. Further, when such a water-impervious member can be used to prevent water from entering the case member 43, the inner side of the through holes 41d and 43b than the bearings B2 and B3 (the case member 43). The seal members S1 and S2 on the inner space side) can be omitted.

  In addition, about the water-blocking structure said by this invention, what has a certain level of water-blocking effect is not restricted to what completely blocks the water splashing with respect to a bearing. Therefore, it can be said that the structure itself of the case member 43 in the illustrated configuration also has a water shielding structure. That is, in the configuration of the case member 43 shown in the figure, since the body portion 43c is formed so as to surround the space through which the opening shaft group passes in three directions, the configuration is such that water scattered mainly from above hardly enters the internal space. It can be said that it has a certain degree of water shielding effect. Further, as described above, water accompanying weft insertion mainly scatters from above, so that openings on the rear side wall and the lower side wall of the case member 43 are formed to the extent that desired support strength can be maintained. May be.

  5) Regarding the structure of the support portion, in the example shown in the figure, a part of the support member 41 corresponds to that, and has a shape in which a cylindrical material is combined, as shown in FIG. In addition, the support portion surrounds the opening shaft group when viewed in a longitudinal section. However, the support portion in the present invention is not limited to such a configuration, and supports the bearing portion (bearing member 43) partially around the opening shaft or the opening shaft group as long as the support strength is acceptable. It may be.

  With respect to such a support portion, the bearing portion may be supported only at a part around the aperture shaft group. However, as described above, the load applied to each aperture shaft 10 mainly acts in a substantially vertical direction. Therefore, in order to cope with this, it is preferable that each opening shaft 10 is supported at at least two positions of the upper and lower positions sandwiching the center of the opening shaft 10. That is, as shown in FIGS. 6 (b) and 6 (c), the body 41 a of the support member 41 is composed of a plurality of body pieces 41 a ′, and with respect to a horizontal line L 1 that passes through the axis of each opening shaft 10. The support portion 41 may be formed so that at least one trunk piece 41a ′ exists in each of the upper position and the lower position.

  More preferably, a part of the support portion (body piece 41a ') is present above and below each opening shaft 10 on the vertical line L2 passing through the center of the opening shaft 10. However, in the case of the configuration, as shown in FIG. 6 (d), the upper body piece 41 a ′ and the lower body piece 41 a ′ of the opening shaft 10 on the vertical line correspond to each opening shaft 10. A common thing may be sufficient and it is not restricted to a part (body piece 41a ') of a support part existing between the opening shafts 10. Incidentally, also in the above-described example shown in FIG. 4 and the like, a part of the support portion exists above and below each opening shaft 10 on the vertical line, and in the above-described example, the upper portion and the lower portion are provided. The portion is continuous with the outer peripheral wall of the support portion. Therefore, the support portion of the support member 41 in the above example has high support rigidity.

  In addition, the support portion does not cover the periphery of the opening shaft group as in the above-described example, and the through hole (41d) in which the bearing (B2) on the frame 1 side of the load point is internally provided is a region inside the frame 1. In a case where they are communicated with each other, it is preferable that a seal member is also disposed at an opening portion of the through hole on the frame 1 side.

  6) In the illustrated example, the support member 41 and the case member 43 are integrally formed, but instead, a plurality of members (for example, both side portions and the trunk portion are formed separately). Or the body portion may be formed of a plurality of members.

  7) In the illustrated example, the bearing device is a single device (first bearing device 40) that is common to the two opening shafts 10 and 10, but the present invention is not limited to this, and is possible in space. If so, an independent bearing device may be provided for each opening shaft 10.

  Further, the present invention can be modified as follows.

  In the illustrated example, the opening device of the loom assumed by the present invention employs a cam drive device 20 as the drive device, and this cam drive device is disposed outside the frame 1 (on the counter warp row side). However, the present invention is not limited to this, and the present invention can also be applied to an opening device that employs a crank-type driving device or the like disclosed as a prior art in Patent Document 1 described above. The type of device is not particularly limited.

  Further, in the opening device in the illustrated example, the two opening shafts 10 and 10 are provided, and thereby the opening motion is given to the four frame frames 2, but the opening device on which the present invention is premised is such a device. The configuration is not limited to this, and the configuration may be such that three or more frame frames are driven by three or more opening shafts. That is, in the present invention, the number of opening shafts and the number of eaves frames driven thereby are not limited.

  Furthermore, the arrangement of the driving device is not limited to the outside of the frame 1 as in the above-described example, and the link mechanism may be provided to be arranged inside the frame 1. However, when a link mechanism including a swing lever attached to the end of the opening shaft and a connecting rod connected to the swing lever is present inside the frame 1, the bearing device (the first example) Since the support portion (support member 41) in the first bearing device 40) cannot be attached to the inner side surface of the frame 1, it is possible to adopt the following embodiment.

  For example, as shown in FIG. 7A, a portion of the support member 41 on the frame 1 side of the support portion is formed in a size that can be accommodated by the swing lever 33 and the swing lever 33 is accommodated in the support portion. It is set as the structure attached to the flame | frame 1 in the state made. Alternatively, as shown in FIG. 7B, the cover member 60 that houses the swing lever 33 and the like is attached to the side surface of the frame 1, and the support member 41 is attached to the side surface of the cover member 60. In the case of the latter embodiment, the cover member 60 is regarded as a part of the frame 1, and the side surface of the cover member 60 to which the support member 41 is attached becomes the inner side surface of the frame 1.

  In addition, the loom to which the opening device of the present invention is applied is not limited to the water jet loom but can be applied to other non-woven looms.

  Furthermore, 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.

1 Loom frame (frame)
2 Shaft frame 3 Opening device 4 Main shaft 5 Main drive motor 6 Crank shaft 10 Open shaft 14 Open lever 20 Cam drive device 21 Cam lever shaft 23 Cam plate 25 Cam lever 27 Cam shaft 30 Link mechanism 31 Swing lever 33 Open shaft lever 35 Connecting rod 40 First bearing device (bearing device)
41 support member 43 case member 50 second bearing device 51 bearing case 55 bearing B1 to B3 bearing S1 to S3 seal member

Claims (4)

A plurality of opening shafts extending in the width direction of the loom below the reed frame and provided corresponding to each of the plurality of reed frames and connected to the corresponding reed frame via an opening lever And a drive device that is connected to a swing lever fixed to the opening shaft and drives the swing lever to swing, and the opening shaft is rotated through a bearing built in the bearing case with a bearing case as a main component. An opening device of a loom including a bearing device that supports the bearing device;
The bearing case includes a bearing portion having a through-hole into which the bearing is inserted, and extends in the axial direction of the opening shaft, and one end is fixed to an inner side surface of the loom frame, and the bearing portion is disposed on the other end side. And a supporting part to support,
A loom opening device. The support portion supports the bearing portion at at least two positions above and below the center of the opening shaft in the vertical direction around the outer peripheral surface of the opening shaft.
The opening device for a loom according to claim 1. The bearing portion includes a pair of bearings that are spaced apart in the axial direction of the opening shaft, and the pair of bearings are disposed so as to be positioned on both sides of the opening lever.
The opening device for a loom according to claim 1 or 2, wherein the opening device is a loom. The loom is a water jet loom,
The bearing portion has a water shielding structure that prevents water from entering at least the through hole in which the bearing is disposed,
The opening device for a loom according to any one of claims 1 to 3, wherein the opening device is a loom.

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