[0001]The present invention relates to a textile machine belt.
Background technique
[0002]
　Belt used in the textile machine usually has a rubber layer on the surface (e.g., see Patent Document 1). Rubber layer on the surface in such belts play a friction resistance and flex resistance of the belt.
[0003]
　In case twister as textile machinery, and arranged so as to intersect the pair of belts, crossed traveling one another by pulleys respectively, a pair of belt twisted yarn by nipping the yarn with opposing surfaces to each other producing It is. On the other hand, in the covering machine as a textile machine, the hollow spindle supporting the spinning bobbin is rotated at a high speed, the core yarn traveling through the hollow spindle, by winding a cover yarn supplied from the spinning bobbin covered yarn is produced. In covering machine, by being placed in contact with the hollow spindle belt, high-speed rotation of the hollow spindle is achieved.
CITATION
Patent Document
[0004]
Patent Document 1: JP 2007-314895 JP
Summary of the Invention
Problems that the Invention is to Solve
[0005]
　During operation of the textile machine, there is a relatively high range of the running sound is generated from the contact portion between the pulleys. Currently, the frequency of the 6000 ~ 8000Hz has been confirmed in the running sound. Even if the sound pressure level is not excessively high, the frequency of 6000 ~ 8000 Hz generally are to be in the range feel uncomfortable. To maintain good working environment, uncomfortable running noise during operation of the textile machine is required to be reduced.
[0006]
　Accordingly, the present invention aims at providing a textile machine belt that can reduce the running noise generated during belt travel.
Means for Solving the Problems
[0007]
　Textile machine belt according to the present invention, there is provided a textile machine belt having a core fabric, the core fabric is warp crosses the plurality of weft yarns, the tissue point the warp and the weft intersect consists of a fabric assembly is basically a twill that twill lines longitudinally while regularly deviated into the belt is formed, the twill lines, some of the assemblies at a predetermined interval wherein the formed deviated to one opposite the other.
Effect of the invention
[0008]
　According to the present invention, twill lines, some of the aggregates are formed shifted to the other opposite one of the longitudinal direction of the belt at predetermined intervals. Thus, core fabric, since undulations of the surface in the width direction of the belt is suppressed, even after long-term use, it is possible to suppress the influence on the properties of the belt surface. Thus textile machine belt can reduce the running noise generated during the running.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009]
FIG. 1 is a cross-sectional view of a textile machine belt according to the present embodiment.
[Figure 2] is a schematic diagram showing a minimum unit of twill of the core fabric of the present embodiment, FIG. 2A surface, FIG. 2B is a back.
Shown [3] shows the results of the surface texture were measured of the core fabric of the present embodiment, FIG. 3A is an enlarged image, Figure 3B is a three-dimensional image image, the results Figure 3C were measured height difference .
It is a schematic diagram showing a minimum unit of FIG. 4 of a conventional core canvas weave.
[Figure 5] is a diagram showing the results of the surface texture was measured of a conventional core canvas, Figure 5A is an enlarged image, Figure 5B is a three-dimensional image image, Figure 5C shows the result of measuring the difference in height.
It is a schematic view illustrating a tester for measuring the FIG. 6 belt running sound.
Is a graph showing the FIG. 7 results of belt running sound was measured.
DESCRIPTION OF THE INVENTION
[0010]
　Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail.
[0011]
1. Overall structure
　textile machine belt 10 shown in Figure 1, the core fabric 12, the first resin layer 14a provided on both surfaces of the core canvas 12, and the second resin layer 14b, the first resin layer It includes a pulley-side layer 16 provided on the surface of 14a, and a spindle-side layer 18 provided on the surface of the second resin layer 14b.
[0012]

　material of the core canvas 12 may be selected from polyester fibers and nylon fibers. The polyester fibers such as polyethylene terephthalate (PET) fibers, and polybutylene terephthalate fiber, and examples of the nylon fiber, such as nylon 6 fibers, and nylon 66 fibers. In particular, PET fibers are preferable as the material of the core canvas 12. The thickness of the core fabric 12 is not particularly limited, is preferably about 0.4 ~ 1.2 mm, more preferably about 0.45 ~ 0.8 mm.
[0013]
　Core canvas 12 is compared with the front and back surfaces is conventional, it is characterized that it is flatter. The structure of the core fabric 12, explained in detail with reference to FIG. Figure 2 shows the minimum unit 11 of the twill of the core canvas 12. Minimum unit 11, vertical four, are composed of horizontal eight squares. Each box is a tissue point warp and weft intersect column is a warp row indicates weft. Mass filled in black is the first tissue point 13 warp crossing passes over weft. Mass unfilled is the second tissue point 15 warp crosses through under the weft.
[0014]
　Smallest unit 11 of twill shown in the figure, the vertical direction is the longitudinal direction L of the belt, the transverse direction is the width direction W of the belt. The back surface of the smallest unit 11 of twill shown in FIG. 2B shows a state in which turned over surface (FIG. 2A) in the lateral direction. Back side, the first tissue point 13 and the second tissue point 15 is to appear in reverse to the surface. The core fabric 12, twill is not the same on both sides. That core canvas 12, the surface does not appear smallest unit 11 identical in (FIG. 2A) and the back surface (FIG. 2B).
[0015]
　Core canvas 12, the warp crosses the plurality of weft yarns, assembly 19 of the first tissue point 13 as an organization point warp and weft intersection is regularly displaced to one longitudinal direction L of the belt twill the twill that line 17 is formed a fabric having a basic. In this embodiment, the number of warp and weft float, i.e. the number of the first tissue point 13, the number of the second tissue point 15 is two the same. Focusing on a single column, the warp yarns, after passing over the two weft is repeated to pass under the two weft. In this way one column, and two first tissue point 13, the repetition appear two second tissue point. Here aggregate 19 is formed by two first tissue point 13.
[0016]
　Twill lines 17, together with the aggregate 19 are regularly displaced to one longitudinal direction L of the belt, displacement to one opposite the other in the longitudinal direction L of the belt at some predetermined interval of the aggregate 19 It is formed Te. Each assembly 19 leads the first tissue point 13 each other in part in tandem adjacent to each other, are continuous as a whole.
[0017]
　In this embodiment, assembly 19 is displaced under vertical direction by the mass one minute toward the column to the right. For example, with respect to assembly 19 in the second column from the left, assembly 19 in the right column (the third column from the left), by being shifted in the longitudinal direction under just masses one minute, the upper and it is connected to the assembly 19 in the second column in the first tissue point 13. Similarly, assembly 19 in the fourth column from the left, with respect to assembly 19 in the third column from the left is offset under the longitudinal direction by the mass one minute.
[0018]
　Further, in the fifth column from the left, assembly 19 is displaced mass one minute on the vertical direction. Thus, assembly 19 in the longitudinal fifth column from the left is connected to the assembly 19 in the longitudinal fourth column from the left in the first tissue point 13 of the lower. Assembly 19 in the sixth column from the left then, compared assembly 19 in the longitudinal fifth column from the left is offset under the longitudinal direction by the mass one minute. Thus the core canvas 12 (in the figure, four rows in) a predetermined distance a portion of the aggregate 19 per are trout one minute displacement on the vertical direction. Thus twill line 17, compared with the case of forming only aggregates 19 are regularly displaced to one longitudinal direction L of the belt, with respect to the width direction W of the belt, it has a gentle slope.
[0019]
　The twill lines 17 formed by the assembly 19, equal numbers of warp and weft, when the density is the same, the angle is greater than 45 ° with the longitudinal direction L of the belt.
[0020]
　Core canvas 12 as described above, by the warp yarns is composed of twill intersecting the plurality of weft yarns in the fabric of the base, it is possible to improve the tensile strength of the belt longitudinal direction. The core fabric 12, assembly 19 is formed with minimal tissue point. That core canvas 12, since the two first tissue point 13 between the two second tissue point 15 is woven repeatedly appear in the vertical direction to suppress the undulation of the warp, more the front and back surfaces it can be flattened.
[0021]
　Core canvas 12 by twill line 17 has become a gentle slope with respect to the width direction W of the belt, the number of twill lines 17 intersecting the width direction of the belt is reduced, the width direction of the belt it is possible to suppress the undulations of the surface at.
[0022]
　Core canvas 12 is in the minimum unit of the twill, the number of the first tissue point 13, by the number of the second tissue point 15 are the same, it is possible to obtain a more uniform surface.
[0023]
　Core canvas 12 has warp yarns in the first tissue point 13, the difference in height of the weft thread at the second tissue points adjacent to the first tissue point 13, more specifically, in the figure, the P1, P2 preferred height difference of not less 80μm or less. Such core canvas 12, together with a twill as described above, and warp of 1000-1700 dtex thickness, is used and weft of 1000-1700 dtex thickness, density longitudinal: 170-200 horizontal: it can be obtained by 40-60. In this case, the warp yarns 80 ~ 170 / m to Yodo, weft is preferably a non-twisted.
[0024]

　The first resin layer 14a and the second resin layer 14b is formed using a thermoplastic elastomer, to impart adhesiveness and flexibility textile machine belt 10. As the thermoplastic elastomers, such as thermoplastic polyurethane (Thermoplastic Polyurethane: TPU) elastomers, and polyester elastomers. Among them, since the flexibility and bendability is better, TPU elastomers are preferred. The thickness of each of the first resin layer 14a and the second resin layer 14b is not particularly limited, is preferably about 0.2 ~ 0.85 mm, which is the approximately 0.5 ~ 0.85 mm It is more preferable.
[0025]

　pulley side layer 16 of the first resin layer 14a surface is subjected to frictional contact with the pulley in the textile machine. The pulley-side layer 16 is selected, such as natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, ethylene-propylene rubber, chloroprene rubber, chlorinated polyethylene, epichlorohydrin rubber, nitrile rubber (NBR), acrylic rubber, and urethane rubber rubber material to be can be prepared using the. These rubber materials may be used in combination of two or more kinds in combination. It can secured to the core canvas 12 by a simple method, since good adhesion can be obtained, as a rubber material NBR is preferable. The thickness of the pulley-side layer 16 is not particularly limited, is preferably about 0.15 ~ 0.45 mm, more preferably about 0.2 ~ 0.3 mm.
[0026]
　The hardness of the pulley-side layer 16 (JIS-A) is preferably 60 ~ 83 ° or less, and more preferably 70 ° or less. The hardness of the pulley-side layer 16 can be determined in conformity with JIS K6301.
[0027]

　spindle-side layer on the second resin layer 14b 18 rotates the spindle in contact with the spindle in the textile machine. The spindle-side layer 18 may be formed of the same material as the pulley-side layer 16. The thickness of the spindle-side layer 18 is not particularly limited, is preferably about 0.15 ~ 0.45 mm, more preferably about 0.2 ~ 0.3 mm.
[0028]
2. Manufacturing method
　for textile machinery belt 10, the core canvas 12 the first resin layer 14a and the second resin layer 14b, the first resin layer 14a and the pulley-side layer 16, the second resin layer 14b and the spindle-side layer if 18 and is fixed in such a way as not to peel, it can be prepared by any method.
[0029]
　First, on both surfaces of the core fabric 12 which is formed in a strip shape, applying an adhesive by coating or dipping. The adhesive can be used, for example polyurethane adhesive. On both surfaces of the adhesive coated core canvas 12 is laminated by extrusion lamination of the first resin layer 14a and the second resin layer 14b.
[0030]
　Pulley-side layer 16, by calendering or the like, to prepare a sheet-shaped rubber material by applying a predetermined rubber material on a given fabric, a sheet-like rubber material obtained in the first resin layer 14a surface can be placed is transferred to. In this embodiment, fabric used for manufacturing of the pulley-side layer 16 is a plain weave structure, the pitch of the fabric is defined to be less than 0.7 mm.
[0031]
　Spindle-side layer 18, to prepare a sheet-shaped rubber material on canvas in the same manner as the pulley-side layer 16, arranged to transfer a sheet-like rubber material obtained on the surface of the second resin layer 14b be able to. In the case of manufacturing the spindle-side layer 18, fabric to be used is not particularly limited, it may be any fabric.
[0032]
　When the transfer of the pulley-side layer 16 and the spindle-side layer 18, a sheet-like rubber material first resin layer 14a, placed on the surface of the second resin layer 14b, and the laminate having a canvas on the outermost surface obtain. The performing squeezing vulcanization in a heated pressure conditions to laminate is processed into a predetermined thickness. The thickness after pressing vulcanization may be, for example 2.0 ~ 3.0 mm approximately. By performing the squeezing vulcanization, on the surface of the first resin layer 14a pulley side layer 16 is fixed by vulcanization, on the surface of the second resin layer 14b, the spindle-side layer 18 by vulcanization bonding It is fixed.
[0033]
　By peeling off the fabric of the outermost surface, and the core canvas 12, a first resin layer 14a and the second resin layer 14b provided on both surfaces of the core canvas 12, on the first resin layer 14a a pulley-side layer 16 provided, the textile machine belt 10 of the present embodiment includes a spindle-side layer 18 provided on the second resin layer 14b is obtained.
[0034]
　Thus textile machine belt 10 obtained may be a desired size, depending on the applied device. For example, the width is about 20 ~ 60 mm, the length may be about 10 ~ 160 m. Textile machine belt 10 of the present embodiment, it is possible to make the both ends seaming by finger joints endless. Belt 10 which is an endless form, between the two pulleys in the textile machine, for example, can be used by turning over at 15 ~ 30 N / mm about tension.
[0035]
3. Operation and effect
　in a textile machine belt 10 according to the present embodiment, twill lines 17, together with the aggregate 19 are regularly displaced to one longitudinal direction L of the belt, part of the assembly 19 is in a predetermined by being formed deviated to one opposite the other in the longitudinal direction L of the belt at intervals, undulations of the surface in the width direction of the belt is suppressed. Thus, it is possible to reduce the sound pressure level of a frequency of 6000 ~ 8000 Hz that occur during belt travel.
[0036]
　Core canvas 12, since the two first tissue point 13 between the two second tissue point 15 is woven repeatedly appear in the vertical direction, thereby improving the tensile strength of the belt longitudinal direction, the float the number can be more flattened while suppressing a front surface and a back surface undulations for two. Thus, core canvas 12, the first resin layer 14a and the second resin layer 14b formed on the core canvas 12, even thinner thickness of the pulley-side layer 16 and the spindle-side layer 18, also aged the first resin layer 14a and the second resin layer 14b by using, even if the thickness of the pulley-side layer 16 and the spindle-side layer 18 is thinner, it is possible to suppress the influence on the properties of the belt surface. Thus textile machine belt 10, even after use time, it is possible to keep the running sound is reduced.
[0037]
4. Example
　to prepare a textile machine belt according to actually present invention, was evaluated. First, to produce a core body canvas with the following specifications. Warp, polyester filament yarn (1100/1 (dtex / configuration), Yodo: 150 ± 10 / m S, Z) was used. Weft, polyester filament yarn (1100/1 (dtex / configuration), untwisted) was used. Using this warp and weft, Width: 1100 (mm), length: 210 (m), density: warp 188 present / 50 mm, weft 49 present / 50 mm, the strip having a twill according to the present invention to obtain a core body canvas.
[0038]
　The results of the measurements of the surface texture of the core fabric in FIG. Measurement, digital microscope (manufactured by Keyence Corporation, model number: VHX-5000) was used. Figure 3A is an enlarged image, Figure 3B is a three-dimensional image image, FIG. 3C shows the result of measuring the difference in height. In Figure 3C, the horizontal axis is measured length ([mu] m), the vertical axis indicates height difference ([mu] m). The first tissue point 13 warp and weft intersect is evident in Figure 3A. From the measurement results, the surface P1 of the warp threads in the first tissue point 13, the height difference between the surface P2 of the weft in the second tissue point 15 adjacent the first tissue point 13 is confirmed to be 78.841Myuemu. In this case, the surface P2 of the weft in the second tissue point 15, where to position an outer edge of the first tissue point 13 is lower most level.
[0039]
　As a comparison, 150 ± 10 / m S a Yodo warp, and Z, except that the tissue smallest unit 51 a twill shown in FIG. 4 is the same as core fabric according to the present invention, a conventional core canvas It was produced. A conventional core canvas, shows the results of measuring the surface texture in Fig. Figure 5A is an enlarged image, Figure 5B is a three-dimensional image image, Figure 5C shows the result of measuring the difference in height. From the measurement results, in the conventional core canvas, the surface P1 of the warp threads in the first tissue point 13, the height difference between the second tissue point 15 the weft of the surface P2 in adjacent the first tissue point 13 encounters 237.836μm It was. In this case, the surface P2 of the weft yarn in a second tissue point, where to position other outer edge of the first tissue point opposite to the first tissue point 13 is lower most level.
[0040]
　Therefore, core fabric according to the present invention, compared with the conventional core canvas, relief of the surface can be suppressed, it was confirmed that it is flattened.
[0041]
　Then applying a polyurethane adhesive with a coating on both surfaces of the core fabric molded in a strip shape. On both sides of the adhesive coated core fabric by laminating a TPU elastomer by extrusion lamination, the first and the second resin layer was prepared in a thickness of 0.8 mm.
[0042]
　The NBR as the rubber material, canvas at a thickness of 0.25mm by calendering (Asahi Kasei Fibers Corp., model number: 40d taffeta) was applied to, as a raw material of the pulley-side layer, sheet supported on canvas to obtain a rubber material. The pitch of the canvas used is a 0.22mm. In the same manner to obtain a sheet-like rubber material as a raw material for the spindle-side layer.
[0043]
　On the surface of the core fabric, the material of the pulley-side layer disposed on the first resin layer formed, on the second resin layer is disposed raw material of the spindle-side layer, the fabric on the outermost surface to obtain a laminate having a. After pressing vulcanization by the conventional method with respect to this laminate, and peeling off the fabric from both surfaces, textile machine belt according to an embodiment of the thickness of 2.6mm was obtained. Similarly, using conventional core canvas to give the textile machine belt according to a comparative example.
[0044]

　each fiber machine belt of Examples and Comparative Examples were prepared endless belt having fingers joint and bonded by thermal fusion the ends. The resulting endless belt test machine shown in FIG. 6 by running at (house mini tangential demonstration machine) 30 was measured running noise.
[0045]
　In the test, as shown, the endless belt 51 produced was wound around between a drive pulley 32 and the driven pulley 34. The tension of the endless belt 51 in this case is the 9N / mm. Between the drive pulley 32 and the driven pulley 34, a plurality of backup pulleys 36 and the spindle 38 is disposed. Drive pulley 32, the diameter of the driven pulley 34 was 120 mm, 40 mm diameter backup pulley 36, the diameter of the spindle 38 and 20 mm. In the endless belt 51, the surface of the pulley-side layer 16 is in contact with the pulley, such as backup pulley 36, the surface of the spindle-side layer 18 is in contact with the spindle 38. When caused to travel the endless belt 51, the surface of the pulley-side layer 16 of the endless belt 51, and thus is pressed against the backup pulley 36.
[0046]
　By rotating the drive pulley 32 in the direction of an arrow in the figure by driving the endless belt 51 at a belt speed of 2.5 m / s, it was measured running noise generated during this. Traveling sound, noise meter 40 (Rion Co., Ltd., model number: NA-60) by the measured, one-third octave band filter (Rion Co., Ltd., model number: NX-02A) (not shown) performing frequency analysis by. The distance d between the endless belt 31 and the noise meter 40 was 150 mm.
[0047]
　For each endless belt of the examples and comparative examples show the results of measurement of the running noise in FIG. 7, the horizontal axis the frequency [Hz], and a vertical axis represents the sound pressure [dB]. The respective endless belts of Examples and Comparative Examples are shown the sound pressure frequency 6300Hz a (dB) in Table 1.
[0048]
[Table 1]

[0049]
　As shown in Table 1, the endless belt embodiment, after traveling about 10,000 hours, the sound pressure frequency 6300Hz is less than in the comparative example. Frequency of 6000 ~ 8000 Hz, since the range of generally uncomfortable, the endless belt embodiment, it can be seen that the sound pressure level of the frequency feel uncomfortable is reduced even after running for 10,000 hours.
[0050]
　Endless belt embodiment, core fabric compared to the comparative example is flat, the height difference between the weft in the warp and the outer edge of the first tissue point is 78.841Myuemu. Therefore, the endless belt according to the embodiment, the resin layer on the surface, even when thinned pulley layer or spindle-side layer, the influence of the core body canvas has on the properties of the belt surface is small, after 10000 hours running of the sound pressure level of the frequency of 6300 Hz, it can be reduced compared with the comparative example.
[0051]
　Endless belt according to a comparative example with respect to this, a warp, for the height difference between the weft at the outer edge of the first tissue point was 237.836Myuemu, when the resin layer on the surface, the pulley-side layer and the spindle-side layer becomes thinner , core canvas large influence on the properties of the belt surface, the sound pressure level of the frequency of 6300Hz after this for 10000 hours running is increased.
[0052]
5. Modification
　The present invention will now not be limited to the embodiments described, but can be appropriately modified within the scope of the present invention.
[0053]
　In the textile machine belt 10 of the present embodiment in an endless shape, by processing the both end portions of the belt tapered, the tapered faces are bonded by an adhesive, or may be seamed by sky bar joint. The adhesive may be, for example, urethane adhesive.
[0054]
　In the above embodiment has been described as being formed in the right downward relative to the width direction of the belt twill lines, the present invention is not limited to this, a twill line to the width direction of the belt is formed upward to the right it may be.
DESCRIPTION OF SYMBOLS
[0055]
　10 Textile machine belt
　12 core canvas
　13 first tissue point
　14a first resin layer
　14b second resin layer
　15 and the second tissue point
　16 pulley side layer
　16a (pulley side layer) surface
　17 twill lines
　18 spindle-side layer
　19 assembly

claims

[Claim 1]The textile machine belt having a core fabric,
the core fabric is warp crosses the plurality of weft yarns, a collection of tissue point the warp and the weft intersect to one longitudinal direction of the belt constructed a twill that twill lines shifted regularly are formed of fabric having a basic,
the twill line is formed a portion of the assembly is displaced to the opposite of the other and the one at predetermined intervals Textile machine belt, characterized in that it is.
[Claim 2]
The assembly, the warp yarns intersect with the two of the weft, textile machine belt according to claim 1, wherein the number of lifting of the said warp weft threads, characterized in that the same.
[Claim 3]
The core canvas includes: the warp in the first tissue point, claim 1 height difference between the weft in the second tissue points adjacent to the first tissue point is equal to or is 80μm or less, or for textile machinery belt of 2 described.