JP4813137B2 - Wide angle canvas manufacturing method and manufacturing apparatus - Google Patents

Description

  The present invention relates to a method and apparatus for manufacturing a so-called wide-angle canvas used for rubber belts and the like.

  2. Description of the Related Art Conventionally, for example, a so-called wide-angle canvas having a wide crossing angle between a warp and a weft is sometimes used for a canvas loaded in a laminated manner in a rubber belt, for example, in order to improve the flexibility of the rubber belt.

  As a method for manufacturing this wide-angle canvas, for example, as disclosed in Patent Document 1, both ears of a woven fabric manufactured by ordinary means are held by a block with a needle attached to a pair of tenter chain portions. There is a method of changing the weft crossing angle without losing the parallelism of the weft yarn as the tenter chain advances.

On the other hand, Patent Document 2 points out the problem that the manufacturing apparatus has a complicated structure in the method as in Patent Document 1 and the installation space and equipment cost are high, and woven fabric is used as a means for solving this problem. The pair of conical rollers that are transported at a constant speed in parallel with each other and rotated on both sides of the roller are rotated in the direction opposite to the moving direction of the woven fabric, respectively. A method has been proposed in which the warp and the weft crossing portion of the woven fabric are bonded to each other after inclining in the counter-movement direction with respect to the part contact side and intersecting the warp with the warp at an angle larger than 90 °.
Japanese Examined Patent Publication No. 57-48659 (Fig. 5 etc.) JP-A-5-59660 (FIG. 1 and the like)

  However, in Patent Document 2, the conical roller is rotated in the direction opposite to the moving direction of the woven fabric in contact with the woven fabric, and the weft is inclined by the frictional force. The burden is large, and the constituent yarns may be damaged to deteriorate the quality.

  In the field of wide-angle canvas, in general, the intersection angle between the warp and the weft to be realized varies depending on the application and circumstances. In this regard, Patent Document 2 states that the cone angle of the conical roller is appropriately increased or decreased in consideration of the intersection angle between the warp and weft of the wide-angle woven fabric to be manufactured, and the optimum cone angle may be determined. ([0025] second sentence of Patent Document 2).

  As described above, when various crossing angles are to be realized with the apparatus of Patent Document 2, a plurality of conical rollers having different conical angles must be prepared and used in exchange. That is, the configuration of Patent Document 2 still has room for improvement in terms of cost, labor, versatility, and the like.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  ◆ According to the first aspect of the present invention, a canvas comprising warps and wefts is wound around the circumferential surface of an inclined roll arranged so that its rotational axis is inclined with respect to the width direction of the canvas. A method for producing a wide-angle canvas is provided, which includes a wide-angle treatment step of inclining the weft by hanging and moving the canvas in a direction parallel to the longitudinal direction in this state.

  As a result, the canvas is wound around the inclined roll, and the canvas is subjected to wide-angle processing while contacting the peripheral surface of the inclined roll with a large area, so that the burden on the surface of the canvas can be reduced and damage to the constituent yarn can be avoided. . In addition, a simple and versatile configuration for widening the canvas becomes possible, and the man-hours for wide-angle processing and the equipment cost can be reduced.

  In the method for producing a wide-angle canvas, it is preferable that the inclination angle of the rotation axis of the inclined roll with respect to the width direction of the canvas can be changed.

  Thereby, various crossing angles can be realized only by changing the tilt angle of the tilt roll, and the manufacturing method can be made more versatile.

  In the method for producing a wide-angle canvas, a plurality of the inclined rolls are provided, and the rotation axis of the canvas is wound in the width direction of the canvas after being wound on the inclined roll and before being wound on the next inclined roll. It is preferable to wind around a relay roll provided along the line.

  As a result, the widening action can be repeated by being wound around a plurality of inclined rolls, and sufficient wide-angle treatment of the canvas can be performed without difficulty. Further, since the plurality of inclined rolls share and perform the widening action, the inclination angle of each inclined roll can be reduced by that amount, and the wrinkles and slack of the canvas can be prevented. Further, since the canvas is wound in the order of the inclined roll → the relay roll → the inclined roll, it is possible to prevent the canvas from being continuously wound on the inclined roll, and this can also prevent the canvas from wrinkling and slackening.

◆ In the method for producing the wide-angle canvas, adhesive treatment step prior to the wide processing step is carried out, the drying process is Ru done after the wide-angle processing step.

  As a result, the canvas that has been previously bonded is wound around the inclined roll, so that the frictional force between the canvas and the inclined roll can be sufficiently secured, and the widening action can be performed stably and reliably. . Further, a canvas having a wide angle fixed sufficiently can be manufactured by a subsequent drying process.

  ◆ According to the second aspect of the present invention, there is provided a wide-angle canvas manufacturing apparatus configured as follows. The apparatus includes at least a canvas feeding unit, a wide-angle processing unit, a drying processing unit, and a canvas winding unit. The wide-angle processing unit is configured to include an inclined roll for winding a canvas that moves in a direction parallel to the longitudinal direction so that a rotation axis thereof is inclined with respect to the width direction of the canvas.

  As a result, the canvas is wound around the inclined roll, and the canvas is subjected to wide-angle processing while contacting the peripheral surface of the inclined roll with a large area, so that the burden on the surface of the canvas can be reduced and damage to the constituent yarn can be avoided. . In addition, a simple and versatile configuration for widening the canvas is possible, and the number of steps for wide-angle processing can be reduced, and an inexpensive manufacturing apparatus can be provided.

  In the wide-angle canvas manufacturing apparatus, it is preferable that the wide-angle processing unit is configured to be able to change the inclination angle of the rotation axis of the inclined roll with respect to the width direction of the canvas.

  Thereby, various crossing angles can be realized only by changing the inclination angle of the inclined roll, and the manufacturing apparatus can be made more versatile.

  In the above wide-angle canvas manufacturing apparatus, a plurality of the inclined rolls are provided, and the rotation axis is set in the width direction of the canvas at a position between the inclined rolls and the inclined rolls in the canvas transport path. It is preferable to provide a relay roll for winding the canvas so as to be parallel.

  As a result, the widening action can be repeated by being wound around a plurality of inclined rolls, and sufficient wide-angle treatment of the canvas can be performed without difficulty. Further, since the plurality of inclined rolls share and perform the widening action, the inclination angle of each inclined roll can be reduced by that amount, and the wrinkles and slack of the canvas can be prevented. Furthermore, since the relay roll is provided between the inclined roll and the inclined roll, it is avoided that the canvas is continuously wound around the inclined roll, and this also prevents the canvas from being wrinkled or loosened.

◆ In the manufacturing apparatus of the wide-angle canvas is bonded processing unit from the canvas and feeding unit in the middle of the transport path of the canvas to the angle processing section that is provided.

  As a result, the canvas bonded by the upstream bonding processing unit is wound around the inclined roll at the wide-angle processing unit, so that the frictional force between the canvas and the inclined roll is sufficiently ensured and the widening action is stable and stable. It can be done reliably.

  Next, embodiments of the invention will be described. FIG. 1 is a schematic side view showing an overall configuration of a wide-angle canvas manufacturing apparatus according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view of a main part showing a part of an inclined roll of a weft tilting apparatus, and FIG. It is an expanded view explaining the image of wide angle processing.

  FIG. 1 shows a schematic side view of a wide-angle canvas manufacturing apparatus. This manufacturing apparatus 1 is bonded to a feeding apparatus 2 as a canvas feeding section in order from the upstream side to the downstream side of the conveyance path of the canvas 12 and bonded thereto. An adhesion processing device 3 as a processing unit, a weft tilting device 4 as a wide-angle processing unit, a tenter device 5 as a drying processing unit, and a winding device 6 as a canvas winding unit are provided.

  The feeding device 2 has a structure in which a canvas roll 11 in which warp and weft are orthogonal to each other is detachable. On the other hand, the winding device 6 is configured to wind the canvas 12 as a winding roll 13 after a series of processing steps such as adhesion processing and wide-angle processing.

  The adhesion processing apparatus 3 includes an adhesive liquid storage tank 13, and an immersion roll 14 is provided in the storage tank 13. A guide roll 15 is provided on the canvas conveyance path from the feeding device 2 to the storage tank 13. In addition, a plurality of guide rolls 16, a mangle roll 17 that conveys and drives the canvas 12, and a tension roll 18 are provided downstream of the adhesion processing apparatus 3.

  The weft tilting device 4 is configured such that a plurality of canvas transport paths are folded back, and a plurality of tilt rolls 31 and folding rolls (relay rolls) 32 are alternately provided in the transport path. A guide roll 33 is disposed upstream of the inclined roll 31 group. Furthermore, a plurality of guide rolls 19 and a drive roll 20 for transporting the canvas 12 are provided on the downstream side of the weft tilting device 4.

  The tenter device 5 is a device that conveys the canvas while spreading or stretching it, and is provided with appropriate heating means (not shown) in the vertical direction. In the present embodiment, the tenter device 5 is configured to perform a drying process. A plurality of guide rolls 21 and drive rolls 22 are provided on the downstream side of the tenter device 5.

  FIG. 2 shows a perspective view of the main part of the periphery of the inclined roll 31 in the canvas transport path configured inside the weft tilting device 4, and the rotation axis 31 c of the inclined roll 31 is before being wound around the inclined roll 31. In a plane parallel to the surface of the canvas 12 at this stage, it is inclined by a slight inclination angle α with respect to the width direction of the canvas 12.

  In this state, the canvas 12 is conveyed in a direction parallel to the longitudinal direction of the canvas 12 by being driven by the mangle roll 17 or the drive roll 20 while being wound around the peripheral surface of the inclined roll 31. Thereby, the movement amount of the canvas 12 increases on one end side in the width direction of the inclined roll 31, and conversely decreases on the other end side. In other words, the amount of movement in the longitudinal direction gradually decreases from the one end side in the width direction of the inclined roll 31 toward the other end side. Thus, by creating an imbalance in the width direction of the movement amount of the canvas 12, the weft is inclined from 90 ° with respect to the warp, and the wide-angle processing of the canvas 12 is realized.

  The inclined roll 31 is supported in a swingable manner by a swing mechanism (not shown), and the tilt angle α is within a predetermined range depending on the crossing angle (orientation angle between the warp and the weft) to be realized. It can be changed as appropriate.

  In the weft tilting device 4 of the present embodiment, a plurality of the tilting rolls 31 having the above-described configuration are arranged in the canvas conveyance path, but the folding roll 32 is always arranged between the tilting rolls 31 and the tilting rolls 31. Has been. In other words, the inclined rolls 31 and the folding rolls 32 are alternately arranged as the inclined rolls 31, the folding rolls 32, the inclined rolls 31,... Yes.

  Unlike the inclined roll 31, the folding roll 32 has its rotation axis oriented in the direction along the width of the canvas 12 (direction perpendicular to the longitudinal direction of the canvas 12, direction perpendicular to the direction of the warp 12 a). . Thereby, it is avoided that the canvas 12 passes the inclined roll 31 continuously, and the imbalance in the width direction of the moving amount of the canvas 12 is prevented from being excessively caused to cause wrinkles and slack. From the standpoint of preventing wrinkles and slack, it is preferable that at least one of the inclined roll 31 and the folding roll 32 is configured as a so-called expanding roll that is biased in the direction in which the canvas 12 is slackened. .

  In the wide-angle canvas manufacturing apparatus 1 of the present embodiment, the adhesion processing apparatus 3 is provided on the upstream side of the weft tilting apparatus 4. In other words, in this manufacturing apparatus 1, the adhesion treatment process is performed before the wide-angle treatment process. Thereby, in the wide angle processing step in the weft tilting device 4, the frictional force between the inclined roll 31 and the folding roll 32 and the canvas 12 can be sufficiently secured, and the wide angle processing can be performed reliably. However, it is also possible to provide the adhesion processing device 3 on the downstream side of the weft tilting device 4 so that the adhesion processing step is performed after the wide angle processing step.

  In the manufacturing apparatus 1 of the present embodiment, the tenter device 5 is provided on the downstream side of the weft tilting device 4. In other words, in this manufacturing apparatus 1, the drying process is performed after the wide-angle process. Thereby, the canvas 12 with the wide angle sufficiently fixed can be manufactured by drying the canvas 12 that has been performed in the order of the adhesion processing step and the wide angle processing step.

  In addition, the wide-angle treatment is desirably performed in a state where tension is applied in the longitudinal direction of the canvas 12 depending on the type of canvas. In the present embodiment, an appropriate amount of tension is applied to the canvas 12 by intentionally generating a difference in the sending speed between the mangle roll 17 on the upstream side of the weft tilting device 4 and the drive roll 20 on the downstream side. Has been granted. However, the means for applying tension is not limited to the above.

  The inventor of the present application conducted the following experiment in order to confirm the utility of the manufacturing apparatus 1 or the manufacturing method. The canvas used in the experiment was a plain weave canvas in which warp and weft were arranged orthogonally, and was immersed in a resorcin-formaldehyde-latex (RFL) solution in the adhesion treatment step before the wide-angle treatment step.

  The constituent yarns of the canvas to be widened were cotton 20s / 2 × cotton 20s / 2, and the density was 75 / 5cm for warp and 75 / 5cm for weft. The angle of the inclined roll 31 was changed in four stages of 4.6 °, 5.9 °, 7.9 °, and 9.2 °, and six experiments were performed.

  Regarding the number of the inclined rolls 31, the number of the inclined rolls 31 is basically three in this experiment, and the experiment was performed with both two and three only when the angle of the inclined rolls 31 is 5.9 °. In addition, the tension applied to the canvas during the wide-angle treatment was, as a rule, such that the stretch rate was 1.0%. However, the experiment was conducted at both 1.0% and 2.0% only when the angle of the inclined roll 31 was 7.9 °.

The results of the above experiment are shown in the following table.

  As can be seen by comparing the results of Experiment 1, Experiment 3, and Experiment 4, the wider the angle of intersection, the greater the inclination angle α of the inclined roll 31 is obtained. However, in Experiment 6 in which the inclination angle α was increased to 9.2 °, the intersection angle was smaller than that in the case where the intersection angle was 7.9 ° (Experiment 5), and the tendency to widen the angle. It was observed.

  In Experiment 6, unlike the other Experiments 1 to 5, it was visually observed that the canvas 12 at the portion where the inclined roll 31 was wound was loosened. That is, even if the inclination angle α is too large, effective widening cannot be achieved, and it is considered that the inclination angle α of the inclination roll 31 is preferably set to 8 ° or less.

  Further, comparing the results between Experiment 2 and Experiment 3, it can be seen that when the number of inclined rolls 31 increases from 2 to 3, a canvas with a wider crossing angle can be obtained. Furthermore, from the results of Experiments 4 and 5, it can be seen that a good wide angle is obtained regardless of the elongation rate of 1.0% or 2.0%.

  As described above, in the manufacturing method using the manufacturing apparatus 1 according to the present embodiment, the canvas 12 configured to include warps and wefts is configured such that the rotation axis 31c is inclined with respect to the width direction of the canvas 12. A wide-angle treatment step of inclining the weft yarns 12b by winding the canvas 12 in a direction parallel to the longitudinal direction. In other words, the manufacturing apparatus 1 includes the weft tilting device 4 that performs such a wide-angle processing step.

  Accordingly, since the canvas 12 is wound around the inclined roll 31 and the canvas 12 comes into contact with the peripheral surface of the inclined roll 31 in a large area, the damage of the constituent yarns 12a and 12b can be reduced, and the quality of the canvas 12 can be reduced. Decline can be prevented. In addition, a simple and versatile configuration for widening the canvas 12 is possible, and the number of wide-angle processing steps and the equipment cost can be reduced.

  Moreover, in this embodiment, it is comprised so that the inclination | tilt angle (alpha) with respect to the width direction of the said canvas 12 of the rotating shaft 31c of the said inclination roll 31 can be changed. Therefore, various crossing angles can be realized by a simple operation of changing the inclination angle α, and the method and apparatus can be further improved in versatility.

  Further, in this embodiment, a plurality of the inclined rolls 31 are provided, and the canvas 12 is wound around the inclined roll 31 and before the next inclined roll 31 is wound, the rotation axis is the width of the canvas 12. It winds around a folding roll 32 provided along the direction. In other words, in the weft tilting device 4, the canvas 12 having a rotation axis provided along the width direction of the canvas 12 is wound at a position between the tilting roll 31 and the tilting roll 31 in the transport path of the canvas 12. A folding roll 32 for hanging is provided.

  Accordingly, the widening action can be repeatedly performed by winding it on the plurality of inclined rolls 31, and sufficient wide-angle processing of the canvas 12 can be performed without difficulty. Further, since the plurality of inclined rolls 31 share and perform the widening action, the inclination angle α of each inclined roll 31 can be reduced by that amount, and the wrinkles and slack of the canvas 12 can be prevented. Further, since the folding roll 32 is provided at a position between the inclined roll 31 and the inclined roll 31 in the transport path of the canvas 12, it is avoided that the canvas 12 is continuously wound around the inclined roll 31, thereby Also, the wrinkles and slack of the canvas 12 can be prevented.

  Further, in the present embodiment, the adhesion processing step is performed before the wide angle processing step, and the drying processing step is performed after the wide angle processing step. That is, the adhesion processing device 3 is provided on the upstream side of the weft tilting device 4, and the tenter device 5 is provided on the downstream side of the weft tilting device 4. Accordingly, since the canvas 12 that has been bonded in advance is wound around the inclined roll 31, the frictional force between the canvas 12 and the inclined roll 31 can be sufficiently secured, and the widening action can be performed stably and reliably. Further, the canvas 12 having a sufficiently wide angle can be manufactured by a subsequent drying process.

  Although the preferred embodiment of the present invention has been described above, the embodiment can be modified as follows, for example.

  For example, regarding the inclined roll 31, various rolls such as a rubber roll, a urethane roll, and a knurled roll can be adopted depending on various circumstances.

  In addition, regarding the winding angle of the canvas 12 around the inclined roll 31 and the folding roll 32, the canvas 12 is wound in a folded shape of 180 ° in the above embodiment, but is not limited thereto. However, if the winding angle is too small, the wide-angle treatment effect tends to be insufficient, so it is preferable to secure a certain degree of the winding angle (for example, 90 ° or more).

  About the inclination direction of the inclination roll 31, what is necessary is just to be able to create the imbalance in the width direction with respect to the movement amount of the canvas 12, and it is not limited to the said inclination direction. Further, the changeable range of the inclination angle α of the inclined roll 31 may be set so as to include α = 0 °. Furthermore, the inclination angles α of the plurality of inclined rolls 31 may be different from each other.

  Further, the drying process step does not necessarily have to be performed by the tenter device 5, and an apparatus having another configuration may be used as long as it can be dried.

The side surface schematic diagram which showed the whole structure of the manufacturing apparatus of the wide angle canvas which concerns on one Embodiment of this invention. The principal part expansion perspective view which shows the part of the inclination roll of a weft inclination apparatus. The expanded view explaining the image of wide angle processing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wide-angle canvas manufacturing apparatus 2 Feeding apparatus (canvas feeding part)
3 Adhesion processing equipment (adhesion processing part)
4 Weft tilting device (wide angle processing unit)
5 Tenter device (drying processing unit)
6 Winding device (canvas winding part)
12 Canvas 12a Warp 12b Weft 31 Inclined roll 31c Rotating axis of inclined roll α Inclined angle of inclined roll 32 Folding roll (relay roll)

Claims (6)

A canvas comprising warps and wefts is wound around the circumferential surface of an inclined roll arranged so that its rotational axis is inclined with respect to the width direction of the canvas, and in this state, the canvas is parallel to the longitudinal direction. A wide-angle treatment step of inclining the weft by moving in a direction, an adhesion treatment step is performed before the wide-angle treatment step, and a drying treatment step is performed after the wide-angle treatment step , A method for manufacturing canvas. A method for producing a wide-angle canvas according to claim 1,
A method for producing a wide-angle canvas, characterized in that the inclination angle of the rotation axis of the inclined roll with respect to the width direction of the canvas can be changed.   2. The method for producing a wide-angle canvas according to claim 1, wherein a plurality of the inclined rolls are provided, and the rotation axis of the canvas is wound on the inclined roll and before the next inclined roll is wound. A method for producing a wide-angle canvas, wherein the roll is wound around a relay roll provided along the width direction of the canvas. A wide-angle canvas manufacturing apparatus comprising at least a canvas feeding unit, a wide-angle processing unit, a drying processing unit, and a canvas winding unit,
The wide-angle processing section for hanging up the canvas to move in a direction parallel to the longitudinal direction, its axis of rotation is configured to include an inclined rolls disposed so as to be inclined with respect to the width direction of the canvas, the canvas An apparatus for manufacturing a wide-angle canvas, wherein an adhesion processing section is arranged in the middle of a conveyance path of the canvas from the feeding section to the wide-angle processing section . 5. The wide-angle canvas manufacturing apparatus according to claim 4 , wherein the wide-angle processing unit is configured to change an inclination angle of a rotation axis of the inclined roll with respect to a width direction of the canvas. Wide-angle canvas manufacturing equipment. The wide-angle canvas manufacturing apparatus according to claim 4 or 5 , wherein a plurality of the inclined rolls are provided, and a position between the inclined rolls and the inclined rolls in the transport path of the canvas is A wide-angle canvas manufacturing apparatus, comprising a relay roll for winding the canvas so that the rotation axis is parallel to the width direction of the canvas.

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