Weaving machine and hose manufacturing method

Abstract

To provide a loom capable of weaving a cylindrical woven fabric having a plurality of regions different in woven texture, and to provide a method for producing a hose using the cylindrical woven fabric.SOLUTION: A loom according to an embodiment includes a warp supply device that arranges a plurality of warps in a circumferential direction around a weaving position at which a weft is woven into the plurality of warps and supplies the plurality of warps to the weaving position, a heddle device that adjusts a height position of each of the plurality of warps to either a first position or a second position, and a weft supply device that passes the weft between the warp set at the first position and the warp set at the second position. In one embodiment, the heald device includes a plurality of actuators capable of individually adjusting the height positions of the plurality of warp yarns between the first position and the second position.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a loom and a method for manufacturing a hose. [Background technology]

[0002] Cylindrical fabrics woven with multiple warp and weft threads are used in a variety of products, including fire hoses, which have a cylindrical fabric outer layer and a lining layer inside.

[0003] There are various weaves for woven fabrics, such as plain weave and twill weave. The weave of a cylindrical woven fabric, such as a jacket, is selected depending on the performance required of the product. Generally, the entire cylindrical woven fabric is formed with the same weave in both the circumferential and longitudinal directions. For example, Patent Document 1 proposes a hose having a plain weave portion and a twill weave portion. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 7-198071 Summary of the Invention [Problem to be solved by the invention]

[0005] If the weave of a cylindrical woven fabric could be made different in parts, it would be possible to impart different properties to each part of the cylindrical woven fabric. However, no method for industrially producing such cylindrical woven fabrics has been established.

[0006] Therefore, one of the objects of the present invention is to provide a loom capable of weaving a cylindrical fabric having a plurality of regions with different weaves, and further, a method for manufacturing a hose using this cylindrical fabric. [Means for solving the problem]

[0007] A loom according to one embodiment includes a warp yarn supplying device that arranges a plurality of warp yarns in a circumferential direction around a weaving position where a weft yarn is woven with a plurality of warp yarns and supplies the plurality of warp yarns to the weaving position, a heald device that adjusts the height position of each of the plurality of warp yarns to either a first position or a second position, and a weft yarn supplying device that passes the weft yarn between the warp yarn set at the first position and the warp yarn set at the second position. Furthermore, the heald device is capable of individually adjusting the height positions of the plurality of warp yarns between the first position and the second position. One for each of the plurality of warp yarns is provided so that It has multiple actuators.

[0008] For example, the multiple actuators are arranged in the circumferential direction. In this case, the positions of the actuators provided for the warp yarns adjacent to each other in the circumferential direction may be shifted in the radial direction around the weaving position.

[0009] At least some of the plurality of actuators may execute a first cycle for forming a first weave pattern on the cylindrical fabric and a second cycle for forming a second weave pattern different from the first weave pattern in a time-division manner.

[0010] In addition, some of the plurality of actuators may execute a first cycle to form a first weave pattern on the cylindrical fabric, and other some of the plurality of actuators may execute a second cycle to form a second weave pattern different from the first weave pattern on the cylindrical fabric at a position aligned with the first weave pattern in the circumferential direction.

[0011] In another embodiment, the plurality of radially arranged warp threads include a plurality of first warp threads located in a first section and a plurality of second warp threads located in a second section shifted from the first section in the circumferential direction. The heald device further includes a first heald unit that adjusts height positions of the plurality of first warp threads between the first position and the second position so that a first weave is formed by the plurality of first warp threads and the weft thread, and a second heald unit that adjusts height positions of the plurality of second warp threads between the first position and the second position so that a second weave different from the first weave is formed by the plurality of second warp threads and the weft thread.

[0012] For example, the first heald unit includes a plurality of first healds arranged in a radial direction centered on the weaving position. The second heald unit includes a plurality of second healds arranged in the radial direction. The first healds share and hold the plurality of first warp threads, and are configured to be able to adjust the height positions of the first warp threads independently between the first position and the second position. The second healds share and hold the plurality of second warp threads, and are configured to be able to adjust the height positions of the second warp threads independently between the first position and the second position. In this case, the number of the first healds included in the first heald unit may be different from the number of the second healds included in the second heald unit.

[0013] The loom may further include an annular reed surrounding the weaving position and having a plurality of slits through which the plurality of warp yarns are respectively passed. The weft yarn supplying device may include a shuttle that rotates inside the annular reed and supplies the weft yarn, and the first heald unit and the second heald unit may be disposed outside the annular reed.

[0014] A method for manufacturing a hose according to one embodiment includes forming a cylindrical fabric using the loom and forming a lining layer on the inner surface of the cylindrical fabric. [Effects of the Invention]

[0015] According to the present invention, it is possible to provide a loom capable of weaving a cylindrical fabric having a plurality of regions with different weave patterns, and a method for manufacturing a hose using this cylindrical fabric. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic perspective view showing an example of a hose. [Figure 2] FIG. 2 is a flowchart showing an example of a method for manufacturing a hose. [Figure 3] FIG. 3 is a schematic perspective view of the loom according to the first embodiment. [Figure 4] FIG. 4 is a schematic cross-sectional view of a weaving mechanism included in the loom according to the first embodiment. [Figure 5] FIG. 5 is an enlarged front view showing a part of a warp yarn supplying device and a weft yarn supplying device provided in the loom according to the first embodiment. [Figure 6] FIG. 6 is a schematic diagram for explaining the configuration of the heald device according to the first embodiment. [Figure 7] FIG. 7 is a schematic perspective view of the actuators and other components included in the heald device. [Figure 8] FIG. 8 is a schematic diagram for explaining the operation of the actuator. [Figure 9] FIG. 9 is a schematic block diagram of a loom according to the first embodiment. [Figure 10] FIG. 10 is a schematic diagram showing (a) a cycle and (b) a weave design for achieving a plain weave using the loom according to the first embodiment. [Figure 11] FIG. 11 is a schematic diagram showing (a) a cycle and (b) a weave design for achieving a twill weave using the loom according to the first embodiment. [Figure 12] FIG. 12 is a schematic diagram showing a first example of a jacket woven by the loom according to the first embodiment. [Figure 13] FIG. 13 is a schematic diagram showing a second example of a jacket woven by the loom according to the first embodiment. [Figure 14] FIG. 14 is a schematic diagram showing a third example of a jacket woven by the loom according to the first embodiment. [Figure 15] FIG. 15 is a schematic diagram showing a fourth example of a jacket woven by the loom according to the first embodiment. [Figure 16] FIG. 16 is a schematic diagram showing a fifth example of a jacket woven by the loom according to the first embodiment. [Figure 17] FIG. 17 is a schematic diagram showing a sixth example of a jacket woven by the loom according to the first embodiment. [Figure 18] FIG. 18 is a schematic diagram for explaining the configuration of a heald device provided in a loom according to the second embodiment. [Figure 19] FIG. 19 is a schematic perspective view showing an example of a configuration applicable to the heald unit included in the heald device. [Figure 20] FIG. 20 is a schematic diagram showing the relationship between the healds and the warp threads included in the heald unit shown in FIG. [Figure 21] FIG. 21 is a schematic perspective view showing another example of a configuration applicable to the heald unit included in the heald device. [Figure 22] FIG. 22 is a schematic diagram showing the relationship between the healds and the warp threads included in the heald unit shown in FIG. [Figure 23] FIG. 23 is a schematic diagram for explaining the operation of the heald. [Figure 24] FIG. 24 is a schematic diagram for explaining the operation of the heald unit shown in FIGS. [Figure 25] FIG. 25 is a schematic diagram for explaining the operation of the heald unit shown in FIGS. [Figure 26] FIG. 26 is a schematic diagram showing an example of the configuration of the heald device. DETAILED DESCRIPTION OF THE INVENTION

[0017] Several embodiments will be described below with reference to the drawings. In each embodiment, a cylindrical woven fabric is assumed to be a jacket for a hose, and a loom for weaving the jacket, a method for manufacturing the jacket, and a method for manufacturing the hose are illustrated. However, the loom and manufacturing method disclosed in each embodiment can also be applied to cylindrical woven fabrics other than jackets.

[0018] Fig. 1 is a schematic perspective view showing an example of a hose 1. In this drawing, attention is focused on the vicinity of the end of the hose 1. The hose 1 is, for example, for firefighting. However, the hose 1 may also be other types of hoses for industrial or agricultural use.

[0019] The hose 1 includes a cylindrical jacket 2 and a lining layer 3 that covers the inner surface of the jacket 2. The lining layer 3 is formed of a resin material such as rubber or synthetic resin, and is liquid-tight.

[0020] The jacket 2 is woven from a plurality of warp threads M and weft threads W. For ease of explanation, the weft threads W are shown on the outer surface of the jacket 2 in FIG. 1, but the weft threads W do not have to be exposed on the outer surface. The warp threads M extend in the longitudinal direction DX of the hose 1 (jacket 2). The weft threads W extend in the circumferential direction Dθ of the hose 1 (jacket 2). More specifically, the weft threads W are spirally shaped with a series of loops in the longitudinal direction DX.

[0021] The weft yarn W is, for example, a filament yarn (long fiber yarn) made up of a plurality of long fibers. Filament yarn has excellent strength, so it is possible to obtain a hose 1 and a jacket 2 with excellent pressure resistance. The warp yarn M is, for example, a spun yarn (short fiber yarn) made up of a plurality of short fibers. Using spun yarn makes it possible to obtain a hose 1 and a jacket 2 that are non-slip and easy to handle. Note that the materials of the weft yarn W and the warp yarn M are not limited to those exemplified here.

[0022] The hose 1 has flexibility that allows it to be in either a flattened state as shown in the drawing or a cylindrically expanded state. The hose 1 has a pair of ears 10a, 10b that are bent when flattened, and a pair of abdomens 11a, 11b between the ears 10a, 10b.

[0023] The ears 10a, 10b have a higher strength and a tendency to fold by making the density of the yarn material (e.g., warp yarns M) higher than that of the yarn material of the abdomens 11a, 11b. Therefore, when no internal pressure is applied to the hose 1, the ears 10a, 10b actively bend, and the abdomens 11a, 11b collapse into flat surfaces.

[0024] In the example of Fig. 1, boundary lines 21 are provided on the outer surface of the jacket 2 along the approximate boundaries between the ear portions 10a, 10b and the abdominal portions 11a, 11b. The boundary lines 21 are formed by warp threads M colored a color (e.g., green) different from the ground color (e.g., white) of the warp threads M that form most of the outer surface of the jacket 2. Although Fig. 1 shows two boundary lines 21 on the abdominal portion 11a side, two boundary lines 21 are similarly provided on the abdominal portion 11b. For example, the warp threads M that form each boundary line 21 are the same color from one end of the hose 1 to the other.

[0025] 2 is a flowchart showing an example of a method for manufacturing the hose 1. In manufacturing the hose 1, first, the jacket 2 is woven by a loom (ST1: weaving step). The jacket 2 is cut to the length required for the hose 1 (ST2: cutting step). Thereafter, the lining layer 3 is formed inside the jacket 2 (ST3: lining formation step). The hose 1 is completed through at least the above steps.

[0026] The lining layer 3 is attached, for example, with an adhesive to the inner surface of the jacket 2. As another example, the inner and outer surfaces of the jacket 2 may be turned inside out, and in this state, the lining layer 3 may be formed by applying a resin to the surface of the jacket 2 that is exposed to the outside, and then the inner and outer surfaces of the jacket 2 may be turned back to their original state.

[0027] The loom used in the weaving step ST1 may have various configurations. Hereinafter, a first embodiment and a second embodiment relating to the configuration of the loom will be described.

[0028] [First embodiment] 3 is a schematic perspective view of a loom 4 according to the first embodiment. The loom 4 includes a weaving mechanism 5 that weaves a jacket 2 from warp threads M and weft threads W, and a creel (yarn reel) 6 that supplies the warp threads M to the weaving mechanism 5.

[0029] In the example of Figure 3, the weaving mechanism 5 is located on an upper floor of a building, and the creel 6 is located on a lower floor below the floor F of the upper floor. However, the arrangement of the weaving mechanism 5 and the creel 6 is not limited to this example.

[0030] The creel 6 is equipped with a plurality of (for example, several tens to several hundreds) spools 6A. Each spool 6A has a warp thread M wound thereon. The warp thread M is sent to the upper floor through an opening provided in the floor F. The plurality of spools 6A also includes the warp thread M corresponding to the boundary line 21 described above.

[0031] Fig. 4 is a schematic cross-sectional view of the weaving mechanism 5. As shown in Fig. 4, the weaving mechanism 5 includes a loom main body 50, a warp yarn supplying device (warping device) 70, a weft yarn supplying device (weft insertion device, throwing device) 80, and a heald device 100.

[0032] The loom main body 50 includes a weaving ring 51, a frame 52, a turntable 53 rotatably supported on the frame 52, and a motor 54 that drives the turntable 53. The frame 52 includes a disk-shaped bottom plate 55, a cylindrical drum 56 that protrudes upward from the center of the bottom plate 55, and a plurality of frames 57 that are arranged at equal intervals around the periphery of the bottom plate 55.

[0033] The weaving ring 51 is attached to an upper end 56A of the drum 56. For example, the weaving ring 51 is formed in a tapered cylindrical shape, with openings 51A and 51B at the leading and base ends, respectively. The weaving mechanism 5 can weave jackets 2 of various diameters by replacing the weaving ring 51 to change the diameter of the opening 51A. The turntable 53 is supported by the drum 56 via bearings provided on the outer circumferential surface of the drum 56. The motor 54 is housed in a space surrounded by, for example, the turntable 53, the bottom plate 55, the drum 56, and the frame 57.

[0034] The warp yarn supplying device 70 warps the warp yarns M radially around the waving ring 51. In the example shown in FIG. 4, the warp yarn supplying device 70 includes a plurality of warping rollers 71 and an annular reed 72. As shown in FIG. 3, the plurality of warping rollers 71 are provided on the side circumferential surface of the weaving mechanism 5, i.e., outside the frame 57. The warping rollers 71 are lined up in the circumferential direction of the weaving mechanism 5 with their ends facing each other. Although a detailed description will be omitted, the warp yarn supplying device 70 includes a number of guides through which each warp yarn M is passed. The plurality of warp yarns M supplied from the creel 6 are warped radially around the waving ring 51 by these warping rollers 71 and guides.

[0035] As shown in Fig. 4, the annular reed 72 is disposed between the warping roller 71 and the waving ring 51 in the conveying path of the warp yarns M, and is fixed to the frame 57. The annular reed 72 includes a lower ring 73 fixed to the frame 57, an upper ring 74 facing the lower ring 73, a plurality of pins 75 extending vertically between the lower ring 73 and the upper ring 74, and a track ring 76 provided on the upper ring 74.

[0036] 5 is an enlarged front view of a portion of the warp yarn supplying device 70 and the weft yarn supplying device 80. As shown in FIG. 5, a plurality of pins 75 are arranged at equal intervals in the circumferential direction of the annular reed 72 (the circumferential direction Dθ described below). A slit SL extending in the height direction DZ is formed between adjacent pins 75. A warp yarn M warped by the warping roller 71 is passed through each slit SL. The warp yarn M passed through the slit SL can move up and down between the lower ring 73 and the upper ring 74, while the pin 75 restricts its movement in the circumferential direction of the annular reed 72.

[0037] The weft yarn supplying device 80 is equipped with a shuttle 81. In this embodiment, as shown in Fig. 4, it is assumed that the weft yarn supplying device 80 is equipped with a pair of shuttles 81. These shuttles 81 are arranged at positions point-symmetrical with respect to the waving ring 51 (positions offset by 180°). However, the number of shuttles 81 equipped in the weft yarn supplying device 80 may be one, or three or more.

[0038] Each shuttle 81 is disposed between the turntable 53 of the loom body 50 and the track ring 76 of the annular reed 72, and faces a pin 75 of the annular reed 72. When the turntable 53 is rotated by the motor 54, the shuttle 81 revolves around the weaving ring 51.

[0039] As shown in Figure 5, the shuttle 81 comprises a spindle-shaped shuttle body 83, a bobbin 84 built into the shuttle body 83, and a pair of rods 85 connected to the shuttle body 83 near one end 83A and the other end 83B, respectively.

[0040] A weft thread W is wound around the bobbin 84. The tip of each rod 85 is in sliding contact with the drum 56 of the loom body 50. The shuttle 81 is restricted in its radial movement of the annular reed 72 by the rods 85 and pins 75, and its vertical movement is restricted by the track ring 76 and turntable 53. A pressure roller 58 provided on the turntable 53 is disposed near an end 83B of the shuttle body 83.

[0041] As will be described in detail later, the heald device 100 adjusts the height position (position in the height direction DZ) of the warp threads M threaded through the annular reed 72 to either a first position P1 or a second position P2. In the example of Fig. 5, the warp threads M are adjusted alternately to the first position P1 and the second position P2. However, the manner in which the warp threads M are adjusted differs depending on the weave of the jacket 2.

[0042] The tip of the shuttle 81 passes between the warp thread M at the first position P1 and the warp thread M at the second position P2. As a result, the warp thread M is divided above and below the shuttle 81. Furthermore, as the shuttle 81 passes, a weft thread W is supplied from the bobbin 84. As a result, the weft thread W is woven between the warp thread M at the first position P1 and the warp thread M at the second position P2.

[0043] As elements for conveying the jacket 2 thus woven from the warp yarns M and the weft yarns W, the weaving mechanism 5 is provided with rollers 91 to 96 shown in Fig. 4. The rollers 91 and 92 are disposed below the waving ring 51. The rollers 93 to 96 are disposed downstream of the rollers 91 and 92 in the conveying direction of the jacket 2.

[0044] Jacket 2 passes through the nip between rollers 91 and 92, the nip between rollers 93 and 95, the nip between rollers 93 and 94, and the nip between rollers 95 and 96 in that order. For example, one of the rollers constituting each nip is a drive roller that is driven to rotate by a motor, and the other is a driven roller. Jacket 2 is formed into a flat shape by passing through each nip.

[0045] The jacket 2 that has left the nip between the rollers 95, 96 is sent to the lower floor through a transport opening OP provided on the floor F. A frame-shaped guide G protrudes from the floor F around the transport opening OP. Rollers or the like for transporting the jacket 2 may also be provided on the lower floor. The jacket 2 may also be sent to the lower floor through the transport opening OP by its own weight.

[0046] The jacket 2 passing through the transport opening OP is connected to the warp yarns M and weft yarns W before being woven by the weaving mechanism 5. In the cutting step ST2 described above, such a jacket 2 is cut to the length required for the hose 1.

[0047] 6 is a schematic diagram illustrating the configuration of the heald device 100 according to this embodiment. The edge of the opening 51A of the waving ring 51 corresponds to the weaving position O where the weft thread W is woven into the multiple warp threads M. The multiple warp threads M are arranged radially from the weaving position O as the center.

[0048] A pair of shuttles 81 of the weft yarn supplying device 80 are located between the annular reed 72 and the weaving position O in the radial direction DR centered on the weaving position O. These shuttles 81 rotate inside the annular reed 72 in a circumferential direction Dθ centered on the weaving position O. The circumferential direction Dθ coincides with the circumferential direction Dθ of the hose 1 to be woven (see FIG. 1).

[0049] The heald device 100 includes a plurality of actuators 110, one for each warp yarn M. These actuators 110 are positioned outside the annular reed 72 and are aligned in the circumferential direction Dθ.

[0050] In the example of Fig. 6, the positions of the actuators 110 provided for the warp yarns M adjacent to each other in the circumferential direction Dθ are shifted in the radial direction DR. As a result, a first row LN1 and a second row LN2 in which the actuators 110 are aligned in the circumferential direction Dθ are formed. However, the arrangement of the actuators 110 is not limited to this example. The actuators 110 may be aligned in one row, or in three or more rows.

[0051] 7 is a schematic perspective view of the actuator 110 and the annular lead 72. The actuator 110 includes a base 111, a rod 112, and a holder 113.

[0052] The rod 112 protrudes in a height direction DZ from the upper surface of the base 111. The holder 113 is provided at the upper end of the rod 112. In the example of Fig. 7, the height direction DZ, the circumferential direction Dθ, and the radial direction DR are perpendicular to each other. However, the relationship between the directions is not limited to this example.

[0053] The holder 113 is, for example, a ring having an opening through which the warp thread M can be passed. However, the holder 113 may have another shape as long as it is capable of restricting the movement of the warp thread M in the height direction DZ.

[0054] 7, the width of the base 111 in the circumferential direction Dθ is larger than the interval between adjacent pins 75 and the interval between adjacent warp threads M. Even in such a case, if the plurality of actuators 110 are arranged separately in the first row LN1 and the second row LN2 as described above, it is possible to arrange the actuators 110 so that they do not interfere with each other.

[0055] 8 is a schematic diagram for explaining the operation of the actuator 110. The base 111 is, for example, a solenoid, and drives the rod 112 along the height direction DZ. This operation makes it possible to adjust the height position of the warp thread M threaded through the holder 113 between a first position P1 and a second position P2 that is lower than the first position P1.

[0056] Next, a detailed description will be given of the operation of the loom 4. Figure 9 is a schematic block diagram of the loom 4 according to this embodiment. The loom 4 is equipped with a control device CT that controls a warp yarn supplying device 70, a weft yarn supplying device 80, and a heald device 100.

[0057] The control device CT is composed of, for example, one or more processors, a memory, and drivers for driving the devices 70, 80, and 100. In order to weave the weft yarn W into the warp yarn M, it is necessary to adjust the height position of the warp yarn M by the heald device 100 in accordance with the movement of the shuttle 81.

[0058] Therefore, the loom 4 may be provided with at least one sensor SN for detecting the position of the shuttle 81. In this case, the control device CT drives each actuator 110 of the heald device 100 based on the detection result of the sensor SN, and adjusts the height position of each warp thread M so as to realize a predetermined weave design.

[0059] In this embodiment, since an actuator 110 is arranged for each warp thread M, it is possible to individually control the height position of each warp thread M. This makes it possible to realize various weaves.

[0060] Typical weaves include plain weave, twill weave, and satin weave. Plain weave or twill weave is often used for the jacket of the hose 1. Furthermore, even within the twill weave, there are various variations, such as 1 / 2 twill and 2 / 1 twill.

[0061] As an example, a method for driving the actuator 110 in the case of a plain weave and a method for driving the actuator 110 in the case of a twill weave (2 / 1 diagonal) will be described below.

[0062] 10 is a schematic diagram showing (a) a cycle for achieving a plain weave and (b) a weave design. The cycle for achieving a plain weave includes steps S11 and S12. Steps S11 and S12 are each a process in which the weft yarn W is woven in once.

[0063] In this embodiment, a pair of shuttles 81 are provided. The weft thread W supplied from one shuttle 81 is called the weft thread W1, and the weft thread W supplied from the other shuttle 81 is called the weft thread W2. In the example of Fig. 10, the weft thread W1 is woven in step S11, and the weft thread W2 is woven in step S12.

[0064] In step S11, the warp thread Ma is adjusted to the first position P1, and the warp thread Mb is adjusted to the second position P2 by each actuator 110. Meanwhile, in step S12, the warp thread Ma is adjusted to the second position P2, and the warp thread Mb is adjusted to the first position P1 by each actuator 110. The warp threads Ma and Mb are arranged alternately in the circumferential direction Dθ.

[0065] In the weave of Figure 10(b), wefts W1 and W2 are indicated by white squares, and warps Ma and Mb are indicated by dotted squares. In step S11, warp Ma is positioned above weft W1, and warp Mb is positioned below weft W1. In step S12, warp Ma is positioned below weft W2, and warp Mb is positioned above weft W2.

[0066] In fact, on the surface of the plain weave jacket 2, adjacent warp threads M are in close contact with each other. Therefore, even in the areas indicated by the white squares, the weft threads W1 and W2 are entirely covered by the warp thread M.

[0067] FIG. 11 is a schematic diagram showing (a) a cycle for achieving a twill weave and (b) a weave structure. The cycle for achieving a twill weave (2 / 1 twill) includes steps S21, S22, and S23. Steps S21, S22, and S23 each involve weaving a weft thread W once. In the example of FIG. 11(a), weft thread W1 is woven in step S21, weft thread W2 is woven in step S22, and weft thread W1 is woven in step S23. In the cycle following the cycle shown in FIG. 11(a), weft thread W2 is woven in step S21, weft thread W1 is woven in step S22, and weft thread W2 is woven in step S23.

[0068] In Fig. 11, the warp yarns Mc, Md, and Me are arranged in order in the circumferential direction Dθ. In step S21, each actuator 110 adjusts the warp yarn Mc to the second position P2, and the warp yarns Md and Me to the first position P1. In step S22, each actuator 110 adjusts the warp yarns Mc and Md to the first position P1, and the warp yarn Me to the second position P2. In step S23, each actuator 110 adjusts the warp yarns Mc and Me to the first position P1, and the warp yarn Md to the second position P2.

[0069] In the weave design of Figure 11(b), wefts W1 and W2 are indicated by white squares, and warps Mc, Md, and Me are indicated by dotted squares. In step S21, warp Mc is positioned below weft W1 or W2, and warp Md and Me are positioned above weft W1 or W2. In step S22, warp Mc and Md are positioned above weft W1 or W2, and warp Me is positioned below weft W1 or W2. In step S23, warp Mc and Me are positioned above weft W1 or W2, and warp Md is positioned below weft W1 or W2.

[0070] In fact, on the surface of the twill-woven jacket 2, adjacent warp threads M are in close contact with each other. Therefore, even in the areas indicated by the white squares, the weft threads W1 and W2 are entirely covered by the warp thread M.

[0071] 10 and 11, the loom 4 according to this embodiment can realize various weaves. That is, by changing the operation cycle of each actuator 110, various weaves can be formed on the jacket 2.

[0072] Furthermore, by using the loom 4, it is possible to manufacture a jacket 2 having regions with different weave patterns in the circumferential direction Dθ and the longitudinal direction DX, and a hose 1 equipped with the jacket 2, as shown in the following examples.

[0073] Fig. 12 is a schematic diagram showing a first example of a jacket 2. The jacket 2 shown in Fig. 12 has first regions A1 and second regions A2 arranged alternately in the longitudinal direction DX. The first region A1 is continuous over the entire circumference in the circumferential direction Dθ. Similarly, the second region A2 is continuous over the entire circumference in the circumferential direction Dθ.

[0074] The first region A1 has a first weave. The second region A2 has a second weave that is different from the first weave. The first weave is woven by driving each actuator 110 in a first cycle. The second weave is woven by driving each actuator 110 in a second cycle. The first cycle and the second cycle are different from each other.

[0075] Note that cycles being different from each other does not only mean that the number of steps constituting one cycle is different, such as steps S11 and S12 shown in Figure 10(a) and steps S21 to S23 shown in Figure 11(a), but also means that even if the number of steps is the same, the pattern in the circumferential direction Dθ of the warp thread M adjusted to the first position P1 or the second position P2 in each step is different.

[0076] 12, a first period in which each actuator 110 is driven in a first cycle and a second period in which each actuator 110 is driven in a second cycle are repeated. In the first period, the first cycle is executed a number of times corresponding to the length of the first region A1 in the longitudinal direction DX. In the second period, the second cycle is executed a number of times corresponding to the length of the second region A2 in the longitudinal direction DX.

[0077] In this way, by causing each actuator 110 to execute the first cycle and the second cycle in a time-division manner, it is possible to obtain a jacket 2 having a different weave in the length direction DX.

[0078] In one example, the first cycle is a plain weave cycle shown in Figure 10(a), and the second cycle is a twill weave cycle shown in Figure 11(a). In this case, the first weave is a plain weave cycle shown in Figure 10(b), and the second weave is a twill weave cycle shown in Figure 11(b). As another example, the first cycle may be a twill weave cycle shown in Figure 11(a), and the second cycle may be a plain weave cycle shown in Figure 10(a). In this case, the first weave is a twill weave shown in Figure 11(b), and the second weave is a plain weave cycle shown in Figure 10(b).

[0079] At least one of the first and second cycles may be other than those shown in Figures 10(a) and 11(a), in which case at least one of the first and second weaves will be different from those shown in Figures 10(b) and 11(b).

[0080] FIG. 13 is a schematic diagram showing a second example of the jacket 2. The jacket 2 shown in FIG. 13 has a first region A1 and a second region A2 arranged in the circumferential direction Dθ. The first region A1 is continuous in the longitudinal direction DX. Similarly, the second region A2 is continuous in the longitudinal direction DX. Although only one second region A2 is shown in FIG. 13, the second region A2 may also be provided on the back side of the illustrated jacket 2.

[0081] In one example, one of the first region A1 and the second region A2 corresponds to the ears 10a and 10b shown in Fig. 1, and the other corresponds to the abdomens 11a and 11b shown in Fig. 1. However, the first region A1 and the second region A2 may be provided independently of the ears 10a and 10b and the abdomens 11a and 11b.

[0082] 13, some of the actuators 110 (the actuators 110 corresponding to the positions where the first regions A1 are formed) repeatedly execute the first cycle, and other of the actuators 110 (the actuators 110 corresponding to the positions where the second regions A2 are formed) repeatedly execute the second cycle.

[0083] In this way, by executing different cycles for some of the actuators 110 and other parts of the actuators 110, it is possible to obtain a jacket 2 having different weave patterns in the circumferential direction Dθ.

[0084] Fig. 14 is a schematic diagram showing a third example of the jacket 2. The jacket 2 shown in Fig. 14 has rectangular second regions A2 arranged intermittently in the longitudinal direction DX. The first region A1 surrounds these second regions A2. That is, in this example, the first region A1 and the second region A2 are aligned in the longitudinal direction DX and also aligned in the circumferential direction Dθ.

[0085] 14, when weaving a portion where only the first region A1 exists in the circumferential direction Dθ, all of the multiple actuators 110 repeatedly execute the first cycle. On the other hand, when weaving a portion where the first region A1 and the second region A2 coexist in the circumferential direction Dθ, some of the multiple actuators 110 (the actuators 110 corresponding to the formation position of the first region A1) repeatedly execute the first cycle, and other part of the multiple actuators 110 (the actuators 110 corresponding to the formation position of the second region A2) repeatedly execute the second cycle.

[0086] Fig. 15 is a schematic diagram showing a fourth example of a jacket 2. Like the example of Fig. 14, the jacket 2 shown in Fig. 15 has second regions A2 arranged intermittently in the longitudinal direction DX. However, each second region A2 is triangular. In addition, the loom 4 according to this embodiment can form second regions A2 (or first regions A1) in various shapes, such as circular, elliptical, and cross shapes.

[0087] Fig. 16 is a schematic diagram showing a fifth example of the jacket 2. The jacket 2 shown in Fig. 16 has a first region A1, a second region A2, and a third region A3 aligned in the longitudinal direction DX. The first region A1, the second region A2, and the third region A3 are each continuous over the entire circumference in the circumferential direction Dθ.

[0088] The third region A3 has a third weave different from the first and second weaves, and the third weave is woven by driving the actuator 110 in a third cycle different from the first and second cycles.

[0089] 16, a first period in which each actuator 110 is driven in a first cycle, a second period in which each actuator 110 is driven in a second cycle, and a third period in which each actuator 110 is driven in a third cycle are repeated. In the first period, the first cycle is executed a number of times corresponding to the length of the first region A1 in the longitudinal direction DX. In the second period, the second cycle is executed a number of times corresponding to the length of the second region A2 in the longitudinal direction DX. In the third period, the third cycle is executed a number of times corresponding to the length of the third region A3 in the longitudinal direction DX.

[0090] In this way, by causing each actuator 110 to execute the first cycle, the second cycle, and the third cycle in a time-division manner, it is possible to obtain a jacket 2 having three types of regions with different weave patterns in the length direction DX.

[0091] Fig. 17 is a schematic diagram showing a sixth example of the jacket 2. The jacket 2 shown in Fig. 17 has a first region A1, a second region A2, and a third region A3 aligned in the circumferential direction Dθ. The first region A1, the second region A2, and the third region A3 are all continuous in the longitudinal direction DX. Although Fig. 17 shows one each of the first region A1, the second region A2, and the third region A3, a plurality of each of these regions may be provided in the circumferential direction Dθ.

[0092] 17, some of the actuators 110 (the actuators 110 corresponding to the formation positions of the first region A1) repeatedly execute the first cycle. Other of the actuators 110 (the actuators 110 corresponding to the formation positions of the second region A2) repeatedly execute the second cycle. Furthermore, the remaining part of the actuators 110 (the actuators 110 corresponding to the formation positions of the third region A3) repeatedly execute the third cycle.

[0093] In this way, by dividing the actuators 110 into three groups and causing each group to execute a different cycle, it is possible to obtain a jacket 2 having three regions with different weave patterns in the circumferential direction Dθ.

[0094] In addition to the above, the loom 4 according to this embodiment can be used to manufacture various cylindrical woven fabrics having regions with different weave patterns in at least one of the longitudinal direction DX and the circumferential direction Dθ. For example, four or more regions with different weave patterns may be formed in the longitudinal direction X by causing each actuator 110 to execute four or more cycles in a time-division manner. Alternatively, four or more regions with different weave patterns may be formed in the circumferential direction Dθ by dividing the actuators 110 into four or more groups and causing each group to execute a different cycle.

[0095] The properties of cylindrical woven fabrics, such as stretchability and abrasion resistance, vary depending on the type of weave. Also, different properties may be required for different parts of a cylindrical woven fabric, such as the ears 10a, 10b and the body parts 11a, 11b of the jacket 2 of a hose 1 that collapses flat, as shown in Figure 1. The loom 4 according to this embodiment can meet such demands by varying the weave of the cylindrical woven fabric.

[0096] [Second embodiment] Next, a loom 4 according to a second embodiment will be described. In this embodiment, the configuration of the heald device 100 is different from that of the first embodiment. Configurations that are not particularly mentioned are the same as those of the first embodiment.

[0097] FIG. 18 is a schematic diagram illustrating the configuration of a heald device 100 of a loom 4 according to the second embodiment. As shown in FIG. 18, a plurality of sections V (V1 to V12) are defined around a weaving position O. For example, one section V corresponds to the area defined by the frame 57 shown in FIGS. 4 and 5. The number of sections V is not limited to 12.

[0098] Each of the sections V1 to V12 has a plurality of warp threads M (M1 to M12). For example, the number of warp threads M1 to M12 located in each of the sections V1 to V12 is the same, but the number of warp threads M in at least some of the sections V may be different from the number of warp threads M in the other sections V.

[0099] The heald device 100 according to this embodiment includes a plurality of heald units H (H1 to H12) arranged in sections V1 to V12, respectively. Each of the heald units H1 to H12 is arranged outside the annular reed 72.

[0100] 19 is a schematic perspective view showing an example of a configuration applicable to the heald unit H. The heald unit Hp shown in this figure is for realizing a plain weave and includes two healds 120 (120A, 120B). These healds 120A, 120B are aligned in the radial direction DR.

[0101] The healds 120A, 120B share and hold the multiple warp threads M of the corresponding section V, and are configured to be able to adjust the height positions of the warp threads M independently of each other between a first position P1 and a second position P2.

[0102] Specifically, each of the healds 120A, 120B includes a pair of bases 121, a frame 122 supported by the bases 121, and a plurality of holders 123 provided inside the frame 122. The frame 122 is, for example, rectangular, but is not limited to this example.

[0103] In each of the healds 120A and 120B, a plurality of holders 123 are arranged at equal intervals in the circumferential direction Dθ. The holders 123 are, for example, rings having openings through which the warp threads M can be passed. However, the holders 123 may have other shapes as long as they are capable of restricting the movement of the warp threads M in the height direction DZ.

[0104] As an example, a wire heald extending in the height direction DZ can be used for the holder 123. In this case, both ends of the wire heald are connected to the upper and lower parts of the frame 122, respectively.

[0105] 20 is a schematic diagram showing the relationship between the healds 120A, 120B and the warp threads M (Ma, Mb). The warp thread Ma threaded through the holder 123 of the heald 120A passes through the frame 122 of the heald 120B. Similarly, the warp thread Mb threaded through the holder 123 of the heald 120B passes through the frame 122 of the heald 120A. The warp threads Ma, Mb are aligned in order in the circumferential direction Dθ.

[0106] The position of the holder 123 of the heald 120A and the position of the holder 123 of the heald 120B are offset in the circumferential direction Dθ, thereby suppressing interference between the warp thread Ma threaded through the holder 123 of the heald 120A and the heald 120B, and between the warp thread Mb threaded through the holder 123 of the heald 120B and the heald 120A.

[0107] 21 is a schematic perspective view showing another example of a configuration applicable to the heald unit Ht. The heald unit Ht shown in this figure is for realizing a twill weave (for example, 2 / 1 twill) and includes three healds 120 (120C, 120D, 120E). These healds 120C, 120D, 120E are aligned in the radial direction DR.

[0108] The healds 120C, 120D, and 120E are configured to hold a plurality of warp threads M of the corresponding section V, and to be able to adjust the height positions of the warp threads M independently of each other between a first position P1 and a second position P2. The configuration of the healds 120C, 120D, and 120E is similar to that of the healds 120A and 120B.

[0109] 22 is a schematic diagram showing the relationship between the healds 120C, 120D, 120E and the warp threads M (Mc, Md, Me). The warp thread Mc threaded through the holder 123 of the heald 120C passes through the frames 122 of the healds 120D and 120E. Similarly, the warp thread Md threaded through the holder 123 of the heald 120D passes through the frames 122 of the healds 120C and 120E, and the warp thread Me threaded through the holder 123 of the heald 120E passes through the frames 122 of the healds 120C and 120D. The warp threads Mc, Md, and Me are aligned in order in the circumferential direction Dθ.

[0110] The positions of the holders 123 of the healds 120C, 120D, and 120E are offset in the circumferential direction Dθ, thereby suppressing interference between the warp thread Mc passed through the holder 123 of the heald 120C and the healds 120D and 120E, between the warp thread Md passed through the holder 123 of the heald 120D and the healds 120C and 120E, and between the warp thread Me passed through the holder 123 of the heald 120E and the healds 120C and 120D.

[0111] 23 is a schematic diagram for explaining the operation of the healds 120 (120A to 120E). A rod 124 extending in the height direction DZ is provided at the bottom of the frame 122. The rod 124 is supported by the base 121. This configuration is applicable to each of the pair of bases 121 provided on the healds 120.

[0112] The base 121 is, for example, a solenoid, and drives the rod 124 along the height direction DZ. This operation makes it possible to adjust the height position of each warp thread M threaded through the multiple holders 123 between a first position P1 and a second position P2 that is lower than the first position P1.

[0113] 19 to 22 are merely examples. For example, each heald 120 may have a greater or lesser number of holders 123. Furthermore, without being limited to the examples in FIGS. 19 to 22, the heald unit H may have four or more healds 120.

[0114] Figure 24 is a schematic diagram for explaining the operation of the heald unit Hp shown in Figures 19 and 20. In the example of this figure, the heald unit Hp operates in a cycle including steps S31 and S32. Steps S31 and S32 are each a process in which the weft W (wefts W1 and W2 shown in Figure 10, etc.) is woven once.

[0115] In step S31, the warp thread Ma is adjusted to the first position P1 by the heald 120A, and the warp thread Mb is adjusted to the second position P2 by the heald 120B. Meanwhile, in step S32, the warp thread Ma is adjusted to the second position P2 by the heald 120A, and the warp thread Mb is adjusted to the first position P1 by the heald 120B.

[0116] By repeating such a cycle including steps S31 and S32, a plain weave similar to the weave shown in FIG. 10(b) can be realized.

[0117] Figure 25 is a schematic diagram for explaining the operation of the heald unit Ht shown in Figures 21 and 22. In the example of this figure, the heald unit Ht operates in a cycle including steps S41, S42, and S43. Steps S41, S42, and S43 are each a process in which the weft W (the wefts W1 and W2 shown in Figure 10, etc.) is woven once.

[0118] In step S41, the warp thread Mc is adjusted to the second position P2 by the heald 120C, and the warp threads Md and Me are adjusted to the first position P1 by the healds 120D and 120E. In step S42, the warp threads Mc and Md are adjusted to the first position P1 by the healds 120C and 120D, and the warp thread Me is adjusted to the second position P2 by the heald 120E. In step S43, the warp threads Mc and Me are adjusted to the first position P1 by the healds 120C and 120E, and the warp thread Md is adjusted to the second position P2 by the heald 120D.

[0119] By repeating the cycle including steps S41, S42, and S43, a twill weave similar to the weave shown in FIG. 11(b) can be realized.

[0120] The cycles shown in Figures 24 and 25 are realized, for example, by the control device CT shown in Figure 9 driving each heald 120. In this driving, the control device CT may switch the steps of each cycle based on the detection result of the sensor SN.

[0121] For example, either the heald unit Hp shown in FIG. 19 or the heald unit Ht shown in FIG. 21 can be used for the heald units H1 to H12 shown in FIG.

[0122] 26 is a schematic diagram showing a configuration example of the heald device 100. In the example of this figure, heald units Hp are used as heald units H1 to H4 and H7 to H10, and heald unit Ht is used as heald units H5, H6, H11, and H12.

[0123] When the jacket 2 is woven using the heald device 100 configured as described above, a plain weave is formed in the regions corresponding to sections V1 to V4 and V7 to V10. Also, a twill weave is formed in the regions corresponding to sections V5, V6, V11, and V12. These weaves are continuous in the length direction X of the jacket 2, similar to the first region A1 and the second region A2 in the example of Fig. 13, for example.

[0124] Different weaves can be achieved by varying the number of healds 120 (first healds) included in a certain heald unit H and the number of healds 120 (second healds) included in another heald unit H, as in the heald unit Hp shown in Fig. 19 and the heald unit Ht shown in Fig. 21. Even if the number of healds 120 included in the heald units H is the same, different weaves can be achieved by, for example, varying the combination of healds 120 that move the frame 122 up and down in each step, or by varying the pattern of the warp threads M held by each heald 120.

[0125] Three or more types of heald units H may be arranged for the sections V1 to V12. In this case, as in the example of Fig. 17, three or more regions with different weaves can be formed in the jacket 2.

[0126] In this way, in the loom 4 according to this embodiment, different heald units H (1st to nth heald units) can be arranged for a plurality of sections V (1st to nth sections) that are located at different positions in the circumferential direction Dθ. Then, by adjusting the height position of the warp threads M (1st to nth warp threads) located in each section V with each heald unit H, it is possible to form a different weave design (1st to nth weave design) for each section V.

[0127] The scope of the present invention is not limited to the configurations disclosed in the above embodiments. Various other configurations can be applied to the loom and the method for manufacturing the hose without departing from the spirit of the present invention. [Explanation of symbols]

[0128] 1...hose, 2...jacket, 3...lining layer, 4...loom, 5...weaving mechanism, 70...yarn supply device, 72...annular reed, 80...yarn supply device, 81...shuttle, 100...heald device, 110...actuator, 120...heald, DR...radial direction, DX...direction, DZ...direction, H...heald unit, warp M...yarn, weft W...yarn, O...weaving position, P1...first position, P2...second position.

Claims

1. A loom for weaving a cylindrical fabric using a plurality of warp threads and weft threads, a warp yarn supplying device that arranges the plurality of warp yarns in a circumferential direction around a weaving position where the weft yarn is woven with the plurality of warp yarns and supplies the plurality of warp yarns to the weaving position; a heald device that adjusts the height position of each of the plurality of warp threads to either a first position or a second position; a weft yarn supplying device that passes the weft yarn between the warp yarn set at the first position and the warp yarn set at the second position; Equipped with the heald device includes a plurality of actuators, one for each of the plurality of warp threads, so that height positions of the plurality of warp threads can be individually adjusted between the first position and the second position.

2. The plurality of actuators are aligned in the circumferential direction.

2. The loom of claim 1.

3. A loom for weaving a cylindrical fabric using a plurality of warp threads and weft threads, a warp yarn supplying device that arranges the plurality of warp yarns in a circumferential direction around a weaving position where the weft yarn is woven with the plurality of warp yarns and supplies the plurality of warp yarns to the weaving position; a heald device that adjusts the height position of each of the plurality of warp threads to either a first position or a second position; a weft yarn supplying device that passes the weft yarn between the warp yarn set at the first position and the warp yarn set at the second position; Equipped with the heald device includes a plurality of actuators that can individually adjust height positions of the plurality of warp threads between the first position and the second position; The positions of the actuators provided for the warp yarns adjacent in the circumferential direction are shifted in a radial direction around the weaving position. loom.

4. A loom for weaving a cylindrical fabric using a plurality of warp threads and weft threads, a warp yarn supplying device that arranges the plurality of warp yarns in a circumferential direction around a weaving position where the weft yarn is woven with the plurality of warp yarns and supplies the plurality of warp yarns to the weaving position; a heald device that adjusts the height position of each of the plurality of warp threads to either a first position or a second position; a weft yarn supplying device that passes the weft yarn between the warp yarn set at the first position and the warp yarn set at the second position; Equipped with the heald device includes a plurality of actuators that can individually adjust height positions of the plurality of warp threads between the first position and the second position; At least some of the plurality of actuators execute a first cycle for forming a first weave pattern on the cylindrical fabric and a second cycle for forming a second weave pattern different from the first weave pattern in a time-division manner. loom.

5. A loom for weaving a cylindrical fabric using a plurality of warp threads and weft threads, a warp yarn supplying device that arranges the plurality of warp yarns in a circumferential direction around a weaving position where the weft yarn is woven with the plurality of warp yarns and supplies the plurality of warp yarns to the weaving position; a heald device that adjusts the height position of each of the plurality of warp threads to either a first position or a second position; a weft yarn supplying device that passes the weft yarn between the warp yarn set at the first position and the warp yarn set at the second position; Equipped with the heald device includes a plurality of actuators that can individually adjust height positions of the plurality of warp threads between the first position and the second position; a portion of the plurality of actuators performing a first cycle to form a first weave on the cylindrical fabric; another part of the plurality of actuators executes a second cycle for forming a second weave pattern different from the first weave pattern on the cylindrical fabric at a position aligned with the first weave pattern in the circumferential direction; loom.

6. A loom for weaving a cylindrical fabric using a plurality of warp threads and weft threads, a warp yarn supplying device that arranges the plurality of warp yarns in a circumferential direction around a weaving position where the weft yarn is woven with the plurality of warp yarns and supplies the plurality of warp yarns to the weaving position; a heald device that adjusts the height position of each of the plurality of warp threads to either a first position or a second position; a weft yarn supplying device that passes the weft yarn between the warp yarn set at the first position and the warp yarn set at the second position; an annular reed surrounding the weaving position and having a plurality of slits through which the plurality of warp yarns are respectively passed; Equipped with the heald device includes a plurality of actuators that can individually adjust height positions of the plurality of warp threads between the first position and the second position; the weft yarn supplying device includes a shuttle that rotates inside the annular reed and supplies the weft yarn; the plurality of actuators are disposed outside the annular lead; loom.

7. A loom for weaving a cylindrical fabric using a plurality of warp threads and weft threads, a warp yarn supplying device that arranges the plurality of warp yarns in a circumferential direction around a weaving position where the weft yarn is woven with the plurality of warp yarns and supplies the plurality of warp yarns to the weaving position; a heald device that adjusts the height position of each of the plurality of warp threads to either a first position or a second position; a weft yarn supplying device that passes the weft yarn between the warp yarn set at the first position and the warp yarn set at the second position; Equipped with The plurality of warp yarns arranged radially are a plurality of first warp yarns located in the first section; a plurality of second warp yarns located in a second section offset from the first section in the circumferential direction; and The heald device a first heald unit that adjusts height positions of the first warp yarns between the first position and the second position so that a first weave is formed by the first warp yarns and the weft yarns; a second heald unit that adjusts height positions of the second warp yarns between the first position and the second position so that a second weave pattern different from the first weave pattern is formed by the second warp yarns and the weft yarns; A loom equipped with:

8. the first heald unit includes a plurality of first healds arranged in a radial direction around the weaving position, the second heald unit includes a plurality of second healds arranged in the radial direction, the first healds are configured to share and hold the first warp threads, and to be able to adjust height positions of the first warp threads independently of one another between the first position and the second position; The second healds are configured to share and hold the second warp threads, and to be able to adjust the height positions of the second warp threads between the first position and the second position independently of each other.

8. The loom according to claim 7.

9. the number of the first healds included in the first heald unit is different from the number of the second healds included in the second heald unit; 9. The loom according to claim 8.

10. a circular reed surrounding the weaving position and having a plurality of slits through which the plurality of warp yarns are respectively passed; the weft yarn supplying device includes a shuttle that rotates inside the annular reed and supplies the weft yarn; the first heald unit and the second heald unit are disposed outside the annular reed; 8. The loom according to claim 7.

11. A cylindrical woven fabric is formed using the loom according to any one of claims 1 to 10, forming a lining layer on the inner surface of the cylindrical fabric; A method for manufacturing a hose, comprising:

Images