JP5758867B2 - Bead weaving machine - Google Patents

Description

  The present invention relates to a bead weaving machine used for producing a bead fabric in which beads are woven.

  Conventionally, a bead weaving machine for producing a bead fabric in which beads are woven is known (see, for example, Patent Document 1). The bead weaving machine described in Patent Document 1 is connected to a pair of left and right side plates opposed to each other at an interval in the left-right direction, and a pair of thread winding rods (first and second) connected to the left and right side plates and spaced apart in the front-rear direction. And a pair of helical spring holding rods (first and second thread support shafts) connected to both side plates and spaced apart in the front-rear direction. One thread fixing shaft fixes one end of a plurality of warp threads, and the other thread fixing shaft fixes the other end of the plurality of warp threads. One yarn support shaft supports one end side intermediate portion of a plurality of warp yarns in parallel, and the other yarn support shaft supports the other end side intermediate portion of a plurality of warp yarns in parallel. . When the bead weaving machine having such a configuration is used, as shown in FIG. 1 of the same document, wefts inserted through the beads are woven into a plurality of warp yarns each extending in the front-rear direction and arranged in the left-right direction. Thus, a bead fabric can be produced.

  When producing a bead fabric having a long overall length of warp, first, the warp is wound around one thread fixing shaft. Next, a weft weaving operation is performed between the first and second yarn support shafts to form a fabric portion (see FIG. 2 of Patent Document 1). Next, while rotating one of the yarn fixing shafts to feed out the warp yarn, the other yarn fixing shaft is rotated to wind up the fabric portion. Then, weft weaving work is carried out on the newly drawn warp. By repeating such operations, a long bead fabric can be produced.

  On the other hand, when producing a bead fabric in which the overall length of the warp is relatively short, as shown in FIG. 1 of Patent Document 1, a thread stop bar for attaching the warp to each thread fixing shaft is attached. By using the thread stopper, the warp thread is hooked so as to extend in the front-rear direction and to be arranged in a plurality on the left and right. According to such a structure, a bead fabric can be produced in the range of the length between both yarn support shafts.

  When producing a bead fabric having a relatively short warp length, it is required to change the length between the two yarn support shafts according to the size of the bead fabric to be produced. Under such circumstances, a bead weaving machine is known in which the length between both yarn support shafts can be adjusted within a predetermined range (see, for example, Patent Document 2). The bead weaving machine described in Patent Document 2 includes a pair of frames that are slidably connected to each other at two left and right positions. One frame is provided with one thread fixing shaft and one thread support shaft, and the other frame is provided with the other thread fixing shaft and the other thread support shaft. One frame is provided with tightening screws at two positions on the left and right. When the tightening screw is tightened, the other frame is pressed and the relative movement of the pair of frames is prevented. According to such a configuration, the length between the two yarn support shafts can be freely adjusted within a predetermined range.

  On the other hand, in the conventional bead weaving machine, it is difficult to adjust the distance between the two yarn support shafts to a predetermined length. For example, when making a bead fabric of a predetermined design at different times, it is necessary to retighten the two screws on the left and right, but it is difficult to reproduce the relative position of both frames to be the same as the previous time. . As a result, the quality of the produced bead fabric may vary.

Japanese Utility Model Publication No. 6-6469 Japanese Utility Model Publication No. 52-38268

  The present invention has been conceived under such circumstances, and an object thereof is to provide a bead weaving machine suitable for adjusting a distance between both yarn support shafts to a predetermined length.

  In order to solve the above problems, the present invention takes the following technical means.

The bead weaving machine provided by the present invention is located behind the left front side plate and the right front side plate facing each other at a predetermined interval in the left-right direction, and the left front side plate and the right front side plate, respectively. A left rear side plate and a right rear side plate opposed to each other at a predetermined interval in the left-right direction, and a first yarn fixing shaft for fixing one end of a plurality of warp yarns, having both ends connected to both the front side plates. And both ends of the back side plates are connected to each other, a second yarn fixing shaft for fixing the other ends of the plurality of warp yarns, and both ends of the front side plates are connected to one end side of the plurality of warp yarns. Both ends of the first yarn support shaft for supporting the intermediate portion in parallel and the two rear side plates are connected to each other, and the second yarn for supporting the other intermediate portion of the plurality of warp yarns in parallel. A support shaft and the left front side plate At least one of the first connecting part for connecting the left rear side plate, the second connecting part for connecting the right front side plate and the right rear side plate, the both connecting parts, the two front side plates, and the two rear side plates. And a length adjusting means that adjusts the length from the rear ends of the two front side plates to the front ends of the two rear side plates in a stepwise manner by changing the relative position with respect to each predetermined pitch. The length adjusting means is provided in at least one of the front side plates and the rear side plates and one of the connecting portions, and has a plurality of grooves arranged at the predetermined pitch in the front-rear direction, the front side plates, It has at least one of both back side plates, and the projection part which is provided in the other of the said both connection parts, and fits into the said groove part .

  In a preferred embodiment, each of the plurality of grooves has a V-shaped cross section and is formed continuously in the front-rear direction, and the protrusion has a V-shaped cross section that can be fitted into the groove. Has been.

  In a preferred embodiment, the length adjusting means is provided in at least one of the two front side plates and the two rear side plates, and is open to the outer side in the left-right direction in the elongated holes extending in the front-rear direction and the connecting portions. A screw hole that faces the elongated hole, and a tightening bolt that is screwed into the threaded hole from the outside in the left-right direction through the elongated hole.

  In a preferred embodiment, the protruding portion is provided on the outer side in the left-right direction at the two connecting portions, and at the inner side in the left-right direction of at least one of the two front side plates and the two rear side plates, A rail-shaped concave groove is formed to accommodate the portion so as to be movable back and forth, and the plurality of groove portions are formed at the bottom of the concave groove.

  In a preferred embodiment, the long hole is partially provided in a region where the plurality of grooves are formed, and the screw hole is provided in a region where the protrusion is formed.

  In a preferred embodiment, at least one of the front side plates and the rear side plates in the left-right direction is marked at positions corresponding to the groove portions.

  In a preferred embodiment, a plurality of the projecting portions are provided at intervals in the front-rear direction at both the connecting portions.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a perspective view which shows an example of the bead weaving machine which concerns on this invention. It is a top view of the bead weaving machine shown in FIG. It is a front view of the bead weaving machine shown in FIG. It is a left view of the bead weaving machine shown in FIG. It is a fragmentary sectional view which follows the VV line of FIG. FIG. 6 is a partial cross-sectional view taken along line VI-VI in FIG. 2. It is sectional drawing which follows the VII-VII line of FIG. It is sectional drawing which follows the VIII-VIII line of FIG. It is sectional drawing which follows the IX-IX line of FIG. It is a fragmentary sectional view which follows the XX line of FIG. It is the fragmentary perspective view which looked at the inner side of the left back side board from diagonally downward. It is a fragmentary sectional view which follows the XII-XII line | wire of FIG. It is sectional drawing similar to FIG. 5 for demonstrating the operation means concerning a thread | yarn fixing shaft. It is sectional drawing similar to FIG. 6 for demonstrating the operation means concerning a thread | yarn support shaft. It is sectional drawing similar to FIG. 12 for demonstrating a length adjustment means. It is a whole top view for demonstrating the usage method of a bead weaving machine. It is principal part sectional drawing for demonstrating the usage method of a bead weaving machine. It is a perspective view for demonstrating the beading procedure of beads. It is a whole top view for demonstrating the usage method of a bead weaving machine. It is sectional drawing which follows the XX-XX line of FIG.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  1 to 4 show an embodiment of a bead weaving machine according to the present invention. As best shown in FIGS. 1 and 2, the bead weaving machine A of this embodiment includes a left front side plate 1C and a right front side plate 1D, a left rear side plate 1A and a right rear side plate 1B, and a thread fixing shaft 2B. , 2A, thread support shafts 3B, 3A, connecting portions 4A, 4B, length adjusting means 5, and operating means 6, 7 are used to produce a bead woven with beads. Is.

  The left front side plate 1C and the right front side plate 1D are opposed to each other at a predetermined interval in the left-right direction. The left rear side plate 1A and the right rear side plate 1B are positioned behind them corresponding to the left front side plate 1C and the right front side plate 1D, respectively, and face each other at a predetermined interval in the left-right direction.

  The yarn fixing shaft 2B fixes one end of a plurality of warp yarns, and both ends are connected to both front side plates 1C and 1D. The yarn fixing shaft 2A fixes the other ends of a plurality of warp yarns, and both ends are connected to both rear side plates 1A and 1B. The thread fixing shaft 2B is positioned forward, and the thread fixing shaft 2A is positioned rearward.

  The yarn support shaft 3B supports one end side intermediate portions of a plurality of warp yarns in parallel, and both end portions are connected to both front side plates 1C and 1D. The yarn support shaft 3A supports the middle portion on the other end side of the plurality of warp yarns in parallel, and both end portions are connected to both rear side plates 1A and 1B. These yarn support shafts 3B and 3A are higher than the yarn fixing shafts 2B and 2A, and are positioned between the yarn fixing shafts 2B and 2A in the front-rear direction.

  The connecting portion 4A connects the left front side plate 1C and the left rear side plate 1A, and the connecting portion 4B connects the right front side plate 1D and the right rear side plate 1B.

  Next, the structure of the thread fixing shaft 2A and the connection structure of the thread fixing shaft 2A to both rear side plates 1A and 1B will be described. Since the structure of the thread fixing shaft 2B and the connection structure of the thread fixing shaft 2B to the front side plates 1C and 1D are the same as those of the thread fixing shaft 2A, the thread fixing shaft 2A will be mainly described. Description of 2B will be omitted as appropriate.

  As shown in FIG. 5, cylindrical rotating shafts 211 and 212 are provided at both ends of the thread fixing shaft 2A. The rotating shafts 211 and 212 are inserted into holes 11 and 11 formed in both rear side plates 1A and 1B. Thereby, the thread fixing shaft 2A is rotatably supported by both the rear side plates 1A and 1B. A shaft end portion 213 is provided on the outer side in the axial direction of the rotation shaft 211 on the left rear side plate 1A side of the thread fixing shaft 2A. The shaft end 213 has a polygonal cross section (for example, a hexagonal shape) (see FIG. 7). In a state where the thread fixing shaft 2A is connected to both the rear side plates 1A and 1B, the shaft end portion 213 protrudes outside the left rear side plate 1A. The yarn fixing shaft 2A has an axial hole 214 that penetrates in the axial direction connecting both ends. A pair of recesses 215 for fixing the warp yarn extending in the axial direction is provided on the outer peripheral surface of the yarn fixing shaft 2A.

  The shaft member 25 is inserted through the shaft hole 214 of the yarn fixing shaft 2A. The shaft member 25 has a round bar shape with a screw shaft 251 provided at the tip. A shaft member end 252 having a polygonal cross section (for example, a hexagonal shape) is provided at the base end of the shaft member 25 (see FIG. 8). As shown in FIG. 5, the operation portion 26 is attached to the shaft member end portion 252. The operation unit 26 is provided outside the left rear side plate 1A. Concave portions 261 and 262 are formed in the operation unit 26. The recess 261 has a cross-sectional shape corresponding to the shaft member end 252, and the shaft member end 251 is fitted in the recess 261. Thereby, the operation part 26 and the shaft member 25 are not relatively rotatable. A shaft end 213 is fitted into the recess 262. Thereby, the operation part 26 and the thread | yarn fixing shaft 2A cannot be rotated relatively. As understood from the above, the yarn fixing shaft 2A, the shaft member 25, and the operation portion 26 are not rotatable relative to each other. Accordingly, when the operation unit 26 is turned, the thread fixing shaft 2A and the shaft member 25 (screw shaft 251) rotate together with the operation unit 26.

  As shown in FIG. 5, the operation unit 27 is attached to the screw shaft 251 of the shaft member 25. A concave portion 271 is formed in the operation portion 27, and a nut 28 having a screw hole 281 is fitted into the concave portion 271. The screw hole 281 is engaged with the screw shaft 251. With such a structure, when the operation portion 27 (nut 28) is turned in the direction in which the screw shaft 251 is tightened, the interval between the operation portions 26 and 27 is narrowed and is sandwiched between the operation portions 26 and 27 via both rear side plates 1A and 1B. The thread fixing shaft 2A thus prevented from rotating. On the other hand, when the operation portion 27 (nut 28) is turned in the direction of loosening the screw shaft 251, the space between the operation portions 26 and 27 is widened as shown in FIG. 13, and the rotation of the thread fixing shaft 2A is allowed. .

  Although detailed illustration explanation is omitted about the thread fixing shaft 2B, the shaft end portion 213 extends outward from the right front side plate 1D, and the operation portion 26 is provided outside the right front side plate 1D. In addition, an operation unit 27 having a screw hole 281 that meshes with the screw shaft 251 is provided outside the left front side plate 1C.

  The yarn fixing shafts 2A and 2B having the above-described configuration are made of synthetic resin such as polyacetal resin, for example, and two members divided in the radial direction are integrally joined.

  The operating means 6 is for rotating the thread fixing shafts 2A and 2B, and includes the shaft member 25 and the operating portions 26 and 27 described above.

  Next, the structure of the yarn support shaft 3A and the connection structure of the yarn support shaft 3A to both rear side plates 1A and 1B will be described. Since the structure of the thread support shaft 3B and the connection structure of the thread support shaft 3B to both the front side plates 1C and 1D are the same as in the case of the thread support shaft 3A, the thread support shaft 3A will be mainly described. Description of 3B will be omitted as appropriate.

  As shown in FIG. 6, cylindrical rotating shafts 311 and 312 are provided at both ends of the yarn support shaft 3A. The rotating shafts 311 and 312 are inserted into holes 12 and 12 formed in both rear side plates 1A and 1B. Thereby, the yarn support shaft 3A is rotatably supported by both the rear side plates 1A and 1B. Further, a shaft end 313 is provided on the outer side in the axial direction of the rotation shaft 311 on the left rear side plate 1A side of the yarn support shaft 3A. The shaft end 313 has a polygonal cross section (for example, a hexagonal shape) as in the case of the yarn fixing shaft 2A. In a state in which the yarn support shaft 3A is connected to both the rear side plates 1A and 1B, the shaft end portion 313 protrudes outside the left rear side plate 1A. The yarn support shaft 3A has an axial hole 314 penetrating in the axial direction connecting both ends.

  A shaft member 35 is inserted through the shaft hole 314 of the yarn support shaft 3A. The shaft member 35 has a round bar shape with a screw shaft 351 provided at the tip. A shaft member end portion 352 having a polygonal cross section (for example, a hexagonal shape) is provided at the base end of the shaft member 35 as in the case of the yarn fixing shaft 2A. An operation unit 36 is attached to the shaft member end 352. The operation unit 36 is provided outside the left rear side plate 1A. Concave portions 361 and 362 are formed in the operation unit 36. The recess 361 has a cross-sectional shape corresponding to the shaft member end 352, and the shaft member end 352 is fitted in the recess 361. Thereby, the operation part 36 and the shaft member 35 cannot be rotated relative to each other. A shaft end 313 is fitted in the recess 362. Thereby, the operation part 36 and the thread | yarn support shaft 3A cannot be rotated relatively. As can be understood from the above, the yarn support shaft 3A, the shaft member 35, and the operation portion 36 cannot rotate relative to each other. Therefore, when the operation unit 36 is turned, the yarn support shaft 3 </ b> A and the shaft member 35 (screw shaft 351) rotate together with the operation unit 36.

  As shown in FIG. 6, the operating portion 37 is attached to the screw shaft 351 of the shaft member 35. A concave portion 371 is formed in the operation portion 37, and a nut 38 having a screw hole 381 is fitted into the concave portion 371. The screw hole 381 meshes with the screw shaft 351. With such a structure, when the operation portion 37 (nut 38) is turned in the direction in which the screw shaft 351 is tightened, the interval between the operation portions 36 and 37 is narrowed and is sandwiched between the operation portions 36 and 37 via both rear side plates 1A and 1B. The thread support shaft 3A thus prevented from rotating. On the other hand, when the operation portion 37 (nut 38) is turned in the direction of loosening the screw shaft 351, the interval between the operation portions 36 and 37 is widened as shown in FIG. 14, and the rotation of the yarn support shaft 3A is allowed. .

  On the outer periphery of the yarn support shaft 3A, a plurality of (two in this embodiment) yarn support portions 32 and 33 for supporting warp yarns are provided. The yarn support portions 32 and 33 are located at different positions in the circumferential direction of the yarn support shaft 3A and are equally arranged in the circumferential direction.

  As shown in FIGS. 1 to 3, the yarn support shaft 3 </ b> A has a substantially cylindrical outer peripheral surface 310, and the yarn support portions 32 and 33 protrude radially outward from the outer peripheral surface 310. Yes. As shown in FIG. 6, the yarn support portion 32 has a comb-like shape in which a plurality of convex portions 321 are arranged in the axial direction of the yarn support shaft 3 </ b> A, and a plurality of groove portions 322 are provided between adjacent convex portions 321. Are formed in parallel. The yarn support portion 33 is also formed in a comb-teeth shape in which a plurality of convex portions 331 are arranged in the axial direction, and a plurality of groove portions 332 are formed in parallel between adjacent convex portions 331. The groove portions 322 and 332 are arranged at a predetermined pitch in the axial direction. The pitch P1 of the groove portion 322 and the pitch P2 of the groove portion 332 are different from each other. In the present embodiment, the pitch P2 is larger than the pitch P1. Pitch P1, P2 is set in the range of about 1-5 mm, for example.

  As shown in FIG. 6, the groove portions 322 and 332 have a V-shaped cross section. In the yarn support portions 32 and 33, through-holes 323 and 333 are formed in the convex portions 321 and 331 so as to penetrate in the axial direction of the yarn support shaft 3A. The plurality of through holes 323 of the yarn support portion 32 intersect with the plurality of groove portions 322 from one end side to the other end side of the yarn support shaft 3A. Similarly, the plurality of through holes 333 of the yarn support portion 33 intersect with the plurality of groove portions 332 from one end side to the other end side of the yarn support shaft 3A.

  As shown in FIG. 3, the outer peripheral surface 310 of the yarn support shaft 3 </ b> A is provided with scales 324 and 334 corresponding to the yarn support portions 32 and 33. The scales 324 and 334 are formed corresponding to the predetermined number of grooves 322 and 332.

  An attachment hole 341 for attaching a thread hook 34 described later is also formed on the outer peripheral surface 310 of the yarn support shaft 3A. The attachment holes 341 are provided at different positions in the circumferential direction of the yarn support shaft 3A. As shown in FIG. 10, a plurality of attachment holes 341 are arranged along the axial direction between the adjacent thread support portions 32 and 33 in the circumferential direction of the thread support shaft 3 </ b> A. Therefore, the thread hook 34 can be detachably provided between the thread support portions 32 and 33 adjacent to each other.

  Although detailed illustration and description of the yarn support shaft 3B is omitted, the shaft end portion 313 extends outward from the right front side plate 1D, and an operation portion 36 is provided outside the right front side plate 1D. In addition, an operation portion 37 having a screw hole 381 that meshes with the screw shaft 351 is provided outside the left front side plate 1C. Similar to the yarn support shaft 3A, the yarn support shaft 3B is provided with yarn support portions 32 and 33, scales 324 and 334, and attachment holes 341. About these elements, the same code | symbol is attached | subjected to drawing and description is abbreviate | omitted.

  The yarn support shafts 3A and 3B having the above-described configuration are made of synthetic resin such as polyacetal resin, and two members divided in the radial direction are integrally joined.

  The operation means 7 is for rotating the yarn support shafts 3A and 3B, and includes the shaft member 35 and the operation portions 36 and 37 described above.

  Next, a connecting structure between the connecting portion 4A and the left rear side plate 1A and the left front side plate 1C and a connecting structure between the connecting portion 4B and the right rear side plate 1B and the right front side plate 1D will be described. The connecting structure between the connecting portion 4A and the left front side plate 1C and the connecting structure between the connecting portion 4B and the right rear side plate 1B and the right front side plate 1D are the same as the connecting structure between the connecting portion 4A and the left rear side plate 1A. Therefore, the connection structure between the connection portion 4A and the left rear side plate 1A will be mainly described, and description of other connection structures will be omitted as appropriate.

  As shown in FIGS. 5, 6, and 11, the left rear side plate 1 </ b> A includes a rail-shaped concave groove 13, a plurality of groove portions 14, and a long hole 15. The concave groove 13 extends in the front-rear direction on the inner side in the left-right direction of the left rear side plate 1A. The plurality of grooves 14 are formed at the bottom of the groove 13, each of which has a V-shaped cross section and is continuous in the front-rear direction. The grooves 14 are arranged at a predetermined pitch P3 in the front-rear direction. An example of the pitch P3 of the groove 14 is about 1 cm. The long hole 15 penetrates in the left-right direction and extends in the front-rear direction, and is partially provided in a region where the plurality of groove portions 14 are formed.

  As shown in FIGS. 1, 2, 5, and 12, the connecting portion 4 </ b> A extends in the front-rear direction and has a flat plate shape with a long rectangular cross section. The connecting portion 4A is accommodated in the concave groove 13 of the left rear side plate 1A, and in this accommodated state, the connecting portion 4A is movable relative to the left rear side plate 1A. A plurality of protrusions 411 are provided at predetermined intervals in the front-rear direction on the outer side of the connecting portion 4A in the left-right direction. The protrusion 411 has a V-shaped cross section and can be fitted into each groove 14 of the left rear side plate 1A.

  The connecting portion 4A is provided with a screw hole 412 that opens to the outside in the left-right direction. In the present embodiment, the screw holes 412 are provided in regions where the protrusions 411 are formed. For example, the connecting portion 4A is formed with a hole 413 penetrating left and right in the center of the protruding portion 411. The screw hole 412 is configured by fitting a nut having the screw hole 412 from the inside of the protruding portion 411. Is done. As shown in FIGS. 5 and 12, the screw hole 412 faces the long hole 15, and the tightening bolt 43 is screwed into the screw hole 412 from the outside in the left-right direction through the long hole 15.

  As clearly shown in FIG. 4, a mark 16 is provided on the outer surface of the left rear side plate 1 </ b> A at a position corresponding to each groove portion 14. The marks 16 are arranged at the same pitch as the pitch P3 of the grooves 14. In addition, as shown in FIGS. 1, 2, and 4, a marked line 414 is formed on the upper surface of the connecting portion 4 </ b> A by a recess with the protrusion 411 as a reference. The marked lines 414 are arranged at the same pitch as the pitch P3 of the grooves 14.

  In the above configuration, when the tightening bolt 43 is loosened from the screw hole 412, the connecting portion 4A is displaced inward in the left-right direction with respect to the left rear side plate 1A. As shown in FIGS. 13 and 15, the fitting between the protrusion 411 of the connecting portion 4A and the groove portion 14 of the left rear side plate 1A is released, and the left rear side plate 1A is front and rear with respect to the connecting portion 4A. It becomes possible to move. Here, as can be understood from FIG. 15, the left rear side plate 1 </ b> A can move back and forth within the range of the longitudinal length of the long hole 15 through which the tightening bolt 43 is passed.

  On the other hand, when the tightening bolt 43 is tightened in the screw hole 412, the protrusion 411 is fitted into the groove portion 14, and the back-and-forth movement between the connecting portion 4A and the left rear side plate 1A is prevented. Here, since the groove portions 14 are continuously arranged at the predetermined pitch P3 in the front and rear, the protrusions 411 are fitted into the respective groove portions 14, so that the relative position between the connecting portion 4A and the left rear side plate 1A is the pitch. It is made to change in steps for every P3. Therefore, as understood from FIGS. 2 and 15, the length from the rear end of the left front side plate 1C to the front end of the left rear side plate 1A can be adjusted stepwise.

  Similar to the left rear side plate 1A, the left front side plate 1C, the right rear side plate 1B, and the right front side plate 1D are each provided with a concave groove 13, a plurality of groove portions 14, a long hole 15, and a mark 16. About these elements, the same code | symbol is attached | subjected to drawing and description is abbreviate | omitted.

  In the connecting portion 4A, as shown in FIG. 4, three projecting portions 411 are provided at the front and rear sides at a predetermined interval. These three protrusions 411 are used for connection with the left front side plate 1C. By changing the projection 411 used for the connection, the relative position between the connection portion 4A and the left front side plate 1C can be changed in multiple stages for each pitch P3.

  Similar to the connecting portion 4A, the connecting portion 4B is provided with a protruding portion 411, a screw hole 412, and a hole 413. About these elements, the same code | symbol is attached | subjected to drawing and description is abbreviate | omitted.

  As can be understood from the above configuration, the relative positions of the connecting portions 4A and 4B and the rear side plates 1A and 1B can be changed stepwise for each pitch P3. Further, the relative positions of the connecting portions 4A, 4B and the front side plates 1C, 1D can also be changed stepwise for each pitch P3. And the length from the rear end of both front side board 1C, 1D to the front end of both rear side board 1A, 1B can be adjusted in steps.

  The protrusions 411 and screw holes 412 provided in the connecting parts 4A and 4B, and the plurality of grooves 14 and long holes 15 provided in the side plates 1A, 1B, 1C and 1D constitute the length adjusting means 5. To do.

  Next, a method of performing a bead weaving operation using the bead weaving machine A will be described with reference to FIGS.

  A case where a bead woven fabric having a relatively short overall warp length will be described. In this case, first, the thread hook 34 is attached to the attachment holes 341 of the thread support shafts 3B and 3A. Next, for example, one end of the yarn is fixed to the yarn hooking rod 34 of the yarn support shaft 3B, and the yarn is fitted into the groove portion 322 of the yarn support shafts 3B and 3A while extending forward and backward. Next, the yarn is wound around the yarn hooking rod 34 of the yarn support shaft 3A, and the yarn is extended in the front-rear direction and fitted in the groove portion 322 adjacent to the groove portion 322 in which the yarn is already fitted. This operation is repeated, and the other end of the warp T1 is fixed to the yarn hooking rod 34. In this way, as shown in FIG. 16, a plurality of warp threads T1 are supported side by side by the thread support shafts 3B and 3A. In the present embodiment, a plurality of thread hooks 34 are arranged along the axial direction (left and right direction) of the thread support shafts 3B and 3A, and the warp thread T1 supported by the thread support shafts 3B and 3A is the thread hook. It is divided into a plurality of areas corresponding to the bars 34.

  Next, as shown in FIG. 17, rod-like stoppers 39 are inserted into all the through holes 323 of the thread support portion 32.

  Next, the weft thread inserted from the needle tip into the bead is woven into the warp thread. Here, as shown in FIG. 18A, first, the weft T2 is lifted from the lower side so as to cross the warp T1, and each bead B is sandwiched between the adjacent warps T1. Next, as shown in FIG. 18B, the weft T2 is folded back with the warp T1 at one end in the left-right direction and passed through the hole of the bead B so as to pass above the warp T1. In this way, two wefts T2 are passed through each bead B, and the warp T1 is sandwiched between the two wefts T2 up and down. Next, the weft thread is inserted into the bead from the needle tip, and the weft thread is folded back again with the warp thread located at the other end in the left-right direction. The weft is then lifted from below so as to cross the warp and each bead is sandwiched between adjacent warps. By repeating such an operation a predetermined number of times, a bead fabric having a predetermined length in the direction (front-rear direction) in which the warp T1 extends is produced.

  Next, the stopper 39 is removed from the through-hole 323, the yarn support shafts 3B and 3A are slightly rotated, the warp yarn T1 is removed from the yarn hooking rod 34, and the bead fabric is removed from the bead weaving machine A. Then, by pulling out both ends of the warp T1, the portion that has been hung around the yarn hooking rod 34 passes through the beads and is in a completed state.

  Next, a case where a bead woven fabric having a long overall length of warp is produced will be described with reference to FIG. In this case, first, one end of a plurality of warps T1 is fixed to the yarn fixing shaft 2B. Here, the warp T1 is arranged so as to straddle the pair of recesses 215 of the yarn fixing shaft 2B. Next, the thread fixing tool 29 is attached to the thread fixing shaft 2B. As shown in FIG. 20, the thread fixing tool 29 has, for example, a substantially semicircular cross section and extends uniformly along the axial direction of the thread fixing shaft 2B. A pair of engaging portions 291 bulging in directions facing each other are provided at both end portions of the thread fixing tool 29. The thread fixing tool 29 is attached by elastically deforming the thread fixing tool 29 so that the dimension between the pair of engaging parts 291 is large, and engaging the engaging part 291 with the recess 215. When the thread fixing tool 29 is attached, the warp thread T1 is fixed by being sandwiched between the thread fixing shaft 2B and the thread fixing tool 29. Next, the yarn fixing shaft 2B is rotated to wind the warp yarn. Next, the warp yarn T1 is fitted in the groove portion 322 of the yarn support shafts 3B and 3A while extending backward. Next, the other end of the warp T1 is fixed to the yarn fixing shaft 2A. The warp yarn T1 is fixed to the yarn fixing shaft 2A in the same manner as the warp yarn T1 is fixed to the yarn fixing shaft 2B. In this way, as shown in FIG. 19, a plurality of warp threads T1 are supported side by side by the thread support shafts 3B, 3A.

  Next, as shown in FIG. 17, rod-like stoppers 29 are inserted into all the through holes 323 of the yarn support portion 32.

  Next, weaving work of the weft thread inserted into the beads is performed. The weaving work here is performed in the same manner as described above with reference to FIG. The weaving operation of the weft is advanced, and a fabric portion is formed between the yarn support shafts 3B and 3A. Next, the yarn fixing shaft 2B is rotated to feed the warp yarn, while the yarn fixing shaft 2A is rotated to wind the fabric portion around the yarn fixing shaft 2A. Then, weft weaving work is carried out on the newly drawn warp. By repeating such operations, a long bead fabric can be produced.

  Next, the operation of the bead loom A will be described.

  According to the bead weaving machine A of the present embodiment, the length from the rear end of both front side plates 1C, 1D to the front end of both rear side plates 1A, 1B is stepped by the length adjusting means 5 for each predetermined pitch P3. Can be adjusted. According to such a configuration, the length between the yarn support shaft 3B supported by both front side plates 1C and 1D and the yarn support shaft 3A supported by both rear side plates 1A and 1B is substantially equal on the left and right. Can be adjusted. As a result, substantially equal tension acts on the warp yarns T1 supported in parallel by the yarn support shafts 3B and 3A, and the quality of the produced bead fabric can be improved.

  Further, when the total length size of the bead fabric to be manufactured is different, the length between the yarn support shafts 3B and 3A is adjusted stepwise for each pitch P3 while maintaining the left and right balance according to the total length size. be able to. Therefore, even when the total length of the bead fabric is different, the quality of the produced bead fabric can be improved.

  The above-mentioned stepwise length adjustment is performed by fitting the protruding portion 411 into one of the plurality of groove portions 14 arranged at a predetermined pitch P3 in the front and rear direction. According to such a structure, it becomes possible to perform a stepwise change exactly about the relative position of connecting part 4A, 4B and both back side board 1A, 1B (both front side board 1C, 1D).

  The plurality of groove portions 14 formed in both the rear side plates 1A and 1B (both front side plates 1C and 1D) are each V-shaped in cross section and are continuous in the front-rear direction. The projecting portions 411 formed on the connecting portions 4A and 4B have a V-shaped cross section that can be fitted into the groove portion 14. According to such a configuration, even if the relative position in the front-rear direction of the groove 14 and the protrusion 411 is slightly shifted from the position to be fitted, the groove 14 and the protrusion 411 are guided when fitted to each other and become a predetermined relative position. To fit. Therefore, stepwise changes can be easily made with respect to the relative positions of the connecting portions 4A, 4B and the rear side plates 1A, 1B (both front side plates 1C, 1D).

  The operation of fitting the protruding portion 411 into the groove portion 14 is performed by screwing the tightening bolt 43 into the screw hole 412 facing the long hole 15. According to such a configuration, it is possible to easily switch between a state in which the protruding portion 411 and the groove portion 14 are fitted and a state in which the fitting of the protruding portion 411 and the groove portion 14 is released.

  The long hole 15 is partially provided in a region where the plurality of groove portions 14 are formed, and the screw hole 412 is provided in a region where the protruding portion 411 is formed. As a result, when the tightening bolt 43 is tightened, the axial force of the threaded portion acts efficiently for the fitting between the protruding portion 411 and the groove portion 14. Such a configuration is suitable for reliably fitting the protrusion 411 and the groove 14.

  Marks 16 are provided at positions corresponding to the groove portions 14 on the outer sides in the left-right direction of both rear side plates 1A, 1B (both front side plates 1C, 1D). As a result, when the position of the fastening bolt 43 is aligned with the mark 16, the groove 14 and the protrusion 411 are aligned with each other. Such a configuration is suitable for quickly performing the stepwise length adjustment described above.

  While specific embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention. The specific shape and material of the bead loom according to the present invention are not limited to the above embodiment.

  In the above-described embodiment, the case where the shape of the groove 14 and the protrusion 411 has a V-shaped cross section has been described, but the shape of the groove 14 and the protrusion 411 is not limited thereto. The protrusion 411 may have any shape that can fit into the groove 14, and the groove 14 and the protrusion 411 may have a curved shape such as a spherical shape.

A Bead weaving machine 1A Left rear side plate 1B Right rear side plate 1C Left front side plate 1D Right front side plate 11, 12 Hole 13 Concave groove 14 Groove portion 15 Long hole 16 Mark 2A (second) thread fixing shaft 2B (first) thread Fixed shaft 211, 212 Rotating shaft 213 Shaft end 214 Shaft hole 25 Shaft member 251 Screw shaft 252 Shaft member end 26 Operation part 261, 262 Recess 27 Operation part 271 Recess 3A (second) thread support shaft 3B (first 1) Thread support shaft 310 Outer peripheral surface 311, 312 Rotating shaft 313 Shaft end 314 Shaft hole 32 Thread support portion 321 Convex portion 322 Groove portion 323 Through hole 324 Scale 33 Thread support portion 331 Convex portion 332 Groove portion 333 Through hole 334 Scale 34 Thread rod 341 Mounting hole 35 Shaft member 351 Screw shaft 352 Shaft member end portion 36 Operation parts 361, 362 Recess 37 Operation part 371 Part 4A (first) connecting portion 4B (second) connecting portion 411 protruding portion 412 screw hole 413 hole 414 marked line 43 fastening bolt 5 length adjusting unit 6 operating means

Claims (5)

A left front side plate and a right front side plate facing each other at a predetermined interval in the left-right direction;
A left rear side plate and a right rear side plate which are located behind them corresponding to the left front side plate and the right front side plate, respectively, and are opposed to each other at a predetermined interval in the left-right direction;
Both ends are connected to the two front side plates, and both ends are connected to the first yarn fixing shaft for fixing one end of the plurality of warp yarns and the two rear side plates, and the other ends of the plurality of warp yarns are fixed. A second thread fixing shaft for
Both ends are connected to the front side plates, and both ends are connected to the first yarn support shaft and the back side plates for supporting one end side intermediate portions of a plurality of warp yarns in parallel, and a plurality of warp yarns. A second yarn support shaft for supporting the other end side intermediate portion in parallel,
A first connecting portion for connecting the left front side plate and the left rear side plate, and a second connecting portion for connecting the right front side plate and the right rear side plate;
By changing the relative positions of the connecting parts and at least one of the front side plates and the rear side plates stepwise for each predetermined pitch, the rear ends of the front side plates to the front ends of the rear side plates. A length adjusting means for adjusting the length stepwise ,
The length adjusting means is provided on at least one of the two front side plates and the two rear side plates and one of the two connecting portions, and includes a plurality of groove portions arranged at the predetermined pitch in the front-rear direction, the two front side plates, A bead weaving machine comprising : at least one of a rear side plate and a protrusion provided on the other of the connecting portions and fitted into the groove . Each of the plurality of grooves has a V-shaped cross section and is continuously formed in the front and rear.
The bead weaving machine according to claim 1 , wherein the protrusion has a V-shaped cross section that can be fitted into the groove. The length adjusting means is provided in at least one of the two front side plates and the two rear side plates, and is provided so as to be open to the outside in the left-right direction in the long holes extending in the front-rear direction and in both the connecting portions. The bead weaving machine according to claim 2 , comprising a screw hole facing the hole and a tightening bolt screwed into the screw hole from the outside in the left-right direction through the long hole. The protruding portion is provided on the outer side in the left-right direction in the both connecting portions,
Rail-shaped concave grooves are formed on the inner side in the left-right direction of at least one of the front side plates and the rear side plates so as to accommodate the connecting part so as to be movable back and forth.
The bead weaving machine according to claim 3 , wherein the plurality of grooves are formed at a bottom of the concave groove. The bead weaving machine according to claim 4 , wherein a plurality of the protruding portions are provided at intervals in the front-rear direction at both the connecting portions.

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